{"text_format":"1","workbook":"xlsx","n_sheets":9,"sheets":["Design worksheet","FET SOA CP","Sch & BOM","Startup nominal","Startup worstcase","Scratchpad","specs","Revision History","Variables"],"not_rendered":{"charts":6,"images":7,"macros":1,"external_links":2,"defined_names":50,"comments":0,"pivot_tables":0},"unopened":[],"bounds":{"document_bytes":16777216,"sheet_cells":100000,"rows_first":2000,"rows_last":500,"rows_between":2000,"halvings":0,"cell_chars":16384,"cell_head_chars":4096},"cells_cut":0,"cells_raw":0,"read":"whole","date_system":"1900"}

{"sheet":"Design worksheet","index":0,"n_rows":754,"n_cols":27,"rows_kept":754,"cut":false,"hidden":false,"merged":[[12,3,12,4],[17,3,18,9],[204,5,204,6],[187,5,187,6],[179,5,179,6],[13,3,13,4],[702,2,702,4],[232,4,232,5],[305,2,305,3],[555,2,555,3],[753,2,753,12],[750,2,750,3],[623,2,623,5],[366,2,366,5],[284,2,284,4],[555,4,555,5]]}
[null,null,null,null,null,null,null,"H","H",null,null,null,null,null,"H","H","H","H","H","H","H","H","H","H","H","H","H"]
[null,null,null,null,null,null,null,null,null,null,null,null,null,null,"x","x","x","x","x","x","x","x","x","x","x","x","x"]
[null,null,null,"ADM1281 Hot Swap Designer"]
[null,null,null,{"$f":"Variables!revtool","v":3}]
[]
[null,null,null,null,null,null,null,null,null,"Beta - Although the tool has been used and designs verified  many times it is not fully tested."]
[null,null,null,null,null,null,null,null,null,"Final design should be independently verified for absolute acuracy."]
[]
[null,null,"Please enter the data in the white cells:",null,null,null,null,"tolerance","RSS?"]
[]
[]
[]
[]
["x","Error combining options:",null,"Worst Case Stacked",null,null,null,null,null,null,null,null,null,null,0,"Full Datasheet specs"]
["x",null,"RSS",{"$f":"IF(D14=\"Root Sum Squares\",1,0)","v":0},null,{"$f":"IF(D13=P14,0,IF(D13=P15,1,IF(D13=P16,2,3)))","v":3},null,null,null,null,null,0,"Worst Case Stacked",null,1,"4 sigma 25->85C"]
["x",null,null,null,null,null,null,null,null,null,null,1,"Root Sum Squares",null,2,"6 sigma 25->85C"]
["x",null,null,null,null,null,null,null,null,null,null,null,null,null,3,"4 sigma -40->85C"]
[]
[]
[null,null,"ADM p/n","ADM1281"]
[null,null,null,null,null,null,null,null,null,null,null,null,"Warning: Selecting these options provides tolerance and specification data that is not guaranteed by ADI. Please choose the first options to comply with ADM1281 datasheet specifications. Other options should be used at your own risk!"]
[null,1,"System Specifications"]
[null,null,"Enter the system design specifications into this section."]
[]
[null,null,"Vmin",10.199999999999999,"V",null,null,null,null,"Minimum Supply voltage (lower tolerance). This is not UV spec!"]
[null,null,"Vmax",13.2,"V",null,null,null,null,"Maximum Supply voltage (higher tolerance). This is not OV spec!"]
[null,null,"Vnom",12,"V",null,null,null,null,"Nominal Supply Voltage"]
[null,null,"Imax",60,"A",null,null,null,null,"Maximum system load current"]
[null,null,"I_CB",70,"A",null,null,null,null,"Circuit breaker trip current. Usually some % higher than Imax."]
[null,null,"I powerup",0.05,"A",null,null,null,null,"DC Current demanded by load during cap charge (Excluding Inrush). E.g. Bias currents etc."]
[null,null,"Rpowerup",10000,"Ohm",{"$f":"D27/D31","v":1.1999999999999999E-3},null,null,null,"Total parallel static resistance on Vout  E.g. LEDs, Resistor strings etc."]
[null,null,"Ta Max",60,"C",null,null,null,null,"Maximum Ambient temperature of system near FET locations"]
[null,null,"Cload",3000,"uF",null,null,null,null,"Total load capacitance"]
[null,null,"C tolerance",10,"%",null,null,null,null,"Tolerance on load capacitance"]
[null,null,"max C",{"$f":"D33*(1+(D34/100))","v":3300.0000000000005},"uF",null,null,null,null,"Max capacitance"]
[null,null,"Min C",{"$f":"D33*(1-(D34/100))","v":2700},"uF"]
[]
[]
[null,2,"UV Pin threshold"]
[]
[]
[null,null,"Vuv",9.3000000000000007,"V",null,null,null,null,"Select desired undervoltage falling threshold"]
["x",null,"Vref",{"$f":"specs!D10","v":1},"V",null,null,{"$f":"P44","v":1.0000000000000009},"Y","Internal comparator reference",null,null,null,null,null,"V%"]
["x",null,"min",{"$f":"specs!C10","v":0.99},"V",null,null,null,null,null,null,null,null,null,null,{"$f":"MAX(Q44:Q45)","v":1.0000000000000009},{"$f":"(D45-D43)/D43*100","v":1.0000000000000009}]
["x",null,"max",{"$f":"specs!E10","v":1.01},"V",null,null,null,null,null,null,null,null,null,null,null,{"$f":"(D43-D44)/D43*100","v":1.0000000000000009}]
["x",null,"Ilkg",{"$f":"specs!E11/1000","v":0.05},"uA",null,null,{"$f":"P64","v":2.7473118279569893E-2},"Y","Max UV pin leakage"]
[]
[null,null,"Tolerance","E96 (1%)",null,null,null,null,null,"Choose preferred resistor tolerance options"]
[null,null,"R1 approx",51100,"Ohm",null,null,null,null,"Enter any approximate value for the top resistor",null,null,null,null,null,"E96 (1%)",96,1,{"$f":"IF($D$48=P49,1,0)","v":1},null,"Active E","active %"]
[null,null,"R1 chosen",{"$f":"ROUND(10^(ROUND((LOG10(D49)-INT(LOG10(D49)))*U50,0)/U50),2)*10^(INT(LOG10(D49)))","v":51100},"Ohm",null,null,null,null,"Calculated closest available top resistor",null,null,null,null,null,"E192 (0.5%)",192,0.5,{"$f":"IF($D$48=P50,1,0)","v":0},null,{"$f":"IF(S49=1,96,192)","v":96},{"$f":"IF(S49=1,R49,IF(S50=1,R50,IF(S51=1,R51,IF(S52=1,R52,1))))","v":1}]
["x",null,"R2 ideal",{"$f":"((D43*D50)/(D42-D43))","v":6156.6265060240958},"Ohm",null,null,null,null,"Calculated ideal bottom resistor",null,null,null,null,null,"E192 (0.25%)",192,0.25,0,60000,{"$f":"ROUND(10^(ROUND((LOG10(T51)-INT(LOG10(T51)))*U50,0)/U50),2)*10^(INT(LOG10(T51)))","v":60400}]
[null,null,"R2 chosen",{"$f":"IF(D53=\"\",ROUND(10^(ROUND((LOG10(D51)-INT(LOG10(D51)))*U50,0)/U50),2)*10^(INT(LOG10(D51))),D53)","v":6190},"Ohm",null,null,null,null,"Calculated closest available bottom resistor",null,null,null,null,null,"E192 (0.1%)",192,0.1,0]
[null,null,"R2 override?",null,"Ohm",null,null,null,null,"Enter a value here to overide the suggested value. Leave blank otherwise"]
[null,null,{"$f":"IF(D53=\"\",\"\",\"WARNING: R2 Override in place. Value is not calculated. Delete override if not intended\")","v":""}]
[null,null,"R tolerance",{"$f":"V50","v":1},"%",null,null,{"$f":"P58","v":1.7839064409146448},"N","Resistor Tolerance"]
[null,null,"Expected design:"]
[null,null,"UV min F",{"$f":"IF(RSS=1,I57,H57)","v":8.9950501858703777},"V",null,null,{"$f":"D58*(1-(($H$67/100)))","v":8.9950501858703777},{"$f":"D58*(1-(($H$71/100)))","v":8.9975579703192547},"Falling minimum threshold",null,null,null,null,null,"R%"]
[null,null,"UV typ F",{"$f":"D43*((D50+D52)/D52)","v":9.2552504038772216},"V",null,null,null,null,"Falling typical threshold",null,null,null,null,null,{"$f":"D55*2*(D50/(D50+D52))","v":1.7839064409146448}]
[null,null,"UV max F",{"$f":"IF(RSS=1,I59,H59)","v":9.5154506218840655},"V",null,null,{"$f":"D58*(1+((H67/100)))","v":9.5154506218840655},{"$f":"D58*(1+((H71/100)))","v":9.5129428374351868},"Falling maximum threshold"]
["x",null,"min",{"$f":"specs!C12","v":40}]
[null,null,"hyst typ",{"$f":"specs!D12","v":60},"mV",null,null,null,null,"Hysteresis",null,null,null,null,null,"I%"]
["x",null,"hyst max",{"$f":"specs!E12","v":75}]
[]
[null,null,"UV min R",{"$f":"IF(RSS=1,I64,H64)","v":9.4958777488462793},"V",null,null,{"$f":"(D65-(D60/1000))*(1-(($H$67/100)))","v":9.4958777488462793},{"$f":"D65*(1-(($H$71/100)))","v":9.5374114485384105},"Rising minimum threshold",null,null,null,null,null,{"$f":"((D46*10^-6)/(D42/(D50+D52)))*(D50/(D50+D52))*100","v":2.7473118279569893E-2}]
[null,null,"UV typ R",{"$f":"D58+(D61/1000*D58)","v":9.8105654281098555},"V",null,null,null,null,"Rising typical threshold"]
[null,null,"UV max R",{"$f":"IF(RSS=1,I66,H66)","v":10.163486193866506},"V",null,null,{"$f":"((D62/1000)+D65)*(1+((H67/100)))","v":10.163486193866506},{"$f":"D65*(1+((H71/100)))","v":10.083719407681299},"Rising maximum threshold"]
[null,null,null,{"$f":"D65-D58","v":0.5553150242326339},null,null,null,{"$f":"SUM(H43:H56)","v":2.8113795591942159},"SUM"]
[null,null,"Filter capacitor",100,"nF",null,null,null,null,"Optional filter capacitor to filter transient UV conditions. Set to 0 if not required"]
[null,null,"RC time constant",{"$f":"D68*0.001*(D52*D50)/(D50+D52)","v":552.11904346308256},"us",null,null,null,null,"RC time constant of selected capacitor and UV divider "]
[]
[null,null,null,null,null,null,null,{"$f":"SQRT(H43^2+H46^2)+H55","v":2.7842837558453688},"RSS"]
[null,3,"OV Pin threshold"]
[]
[null,null,"Vov",16.399999999999999,"V",null,null,null,null,"Select desired overvoltage rising threshold"]
["x",null,"Vref",{"$f":"specs!D13","v":1},"V",null,null,{"$f":"P76","v":1.0000000000000009},"Y","Internal comparator reference",null,null,null,null,null,"V%"]
["x",null,"min",{"$f":"specs!C13","v":0.99},"V",null,null,null,null,null,null,null,null,null,null,{"$f":"MAX(Q76:Q77)","v":1.0000000000000009},{"$f":"(D77-D75)/D75*100","v":1.0000000000000009}]
["x",null,"max",{"$f":"specs!E13","v":1.01},"V",null,null,null,null,null,null,null,null,null,null,null,{"$f":"(D75-D76)/D75*100","v":1.0000000000000009}]
["x",null,"Ilkg",{"$f":"specs!E14/1000","v":0.05},"uA",null,null,{"$f":"P96","v":1.5579268292682927E-2},"Y","Max UV pin leakage"]
[]
[null,null,"Tolerance","E96 (1%)",null,null,null,null,null,"Choose preferred resistor tolerance options"]
[null,null,"R1 approx",51100,"Ohm",null,null,null,null,"Enter any approximate value for the top resistor",null,null,null,null,null,"E96 (1%)",96,1,{"$f":"IF($D$80=P81,1,0)","v":1},null,"Active E","active %"]
[null,null,"R1 chosen",{"$f":"ROUND(10^(ROUND((LOG10(D81)-INT(LOG10(D81)))*U82,0)/U82),2)*10^(INT(LOG10(D81)))","v":51100},"Ohm",null,null,null,null,"Calculated closest available top resistor",null,null,null,null,null,"E192 (0.5%)",192,0.5,{"$f":"IF($D$80=P82,1,0)","v":0},null,{"$f":"IF(S81=1,96,192)","v":96},{"$f":"IF(S81=1,R81,IF(S82=1,R82,IF(S83=1,R83,IF(S84=1,R84,1))))","v":1}]
["x",null,"R2 ideal",{"$f":"((D75*D82)/(D74-D75))","v":3318.1818181818185},"Ohm",null,null,null,null,"Calculated ideal bottom resistor",null,null,null,null,null,"E192 (0.25%)",192,0.25,0,60000,{"$f":"ROUND(10^(ROUND((LOG10(T83)-INT(LOG10(T83)))*U82,0)/U82),2)*10^(INT(LOG10(T83)))","v":60400}]
[null,null,"R2 chosen",{"$f":"IF(D85=\"\",ROUND(10^(ROUND((LOG10(D83)-INT(LOG10(D83)))*U82,0)/U82),2)*10^(INT(LOG10(D83))),D85)","v":3320},"Ohm",null,null,null,null,"Calculated closest available bottom resistor",null,null,null,null,null,"E192 (0.1%)",192,0.1,0]
[null,null,"R2 override?",null,"Ohm",null,null,null,null,"Enter a value here to overide the suggested value. Leave blank otherwise"]
[null,null,{"$f":"IF(D85=\"\",\"\",\"WARNING: R2 Override in place. Value is not calculated. Delete override if not intended\")","v":""}]
[null,null,"R tolerance",{"$f":"V82","v":1},"%",null,null,{"$f":"P90","v":1.8779860345461228},"N","Resistor Tolerance"]
[null,null,"Expected design:"]
[null,null,"OV min R",{"$f":"IF(RSS=1,I89,H89)","v":15.930737121652562},"V",null,null,{"$f":"D90*(1-(($H$67/100)))","v":15.930737121652562},{"$f":"D90*(1-(($H$71/100)))","v":15.935178548213539},"Rising minimum threshold",null,null,null,null,null,"R%"]
[null,null,"OV typ R",{"$f":"D75*((D82+D84)/D84)","v":16.391566265060241},"V",null,null,null,null,"Rising typical threshold",null,null,null,null,null,{"$f":"D87*2*(D82/(D82+D84))","v":1.8779860345461228}]
[null,null,"OV max R",{"$f":"IF(RSS=1,I91,H91)","v":16.865866939097852},"V",null,null,{"$f":"D90*(1+((H99/100)))","v":16.865866939097852},{"$f":"D90*(1+((H101/100)))","v":16.863333144085498},"Rising maximum threshold"]
["x",null,null,{"$f":"specs!C15","v":40}]
[]
[null,null,"hyst max",{"$f":"specs!D15","v":60},"mV",null,null,null,null,"Hysteresis",null,null,null,null,null,"I%"]
["x",null,null,{"$f":"specs!E15","v":75}]
[null,null,"OV min F",{"$f":"IF(RSS=1,I96,H96)","v":14.936017446177088},"V",null,null,{"$f":"(D97-(D92/1000))*(1-(($H$67/100)))","v":14.936017446177088},{"$f":"D97*(1-(($H$71/100)))","v":14.979067835320725},"Falling minimum threshold",null,null,null,null,null,{"$f":"((D78*10^-6)/(D74/(D82+D84)))*(D82/(D82+D84))*100","v":1.5579268292682927E-2}]
[null,null,"OV typ F",{"$f":"D90-(D94/1000*D90)","v":15.408072289156626},"V",null,null,null,null,"Falling typical threshold"]
[null,null,"OV max F",{"$f":"IF(RSS=1,I98,H98)","v":15.93108509672911},"V",null,null,{"$f":"((D95/1000)+D97)*(1+((H99/100)))","v":15.93108509672911},{"$f":"D97*(1+((H101/100)))","v":15.851533155440366},"Falling maximum threshold"]
[null,null,null,null,null,null,null,{"$f":"SUM(H75:H88)","v":2.8935653028388066},"SUM"]
[null,null,"Filter capacitor",10,"nF",null,null,null,null,"Optional filter capacitor to filter transient OV conditions.  Set to 0 if not required"]
[null,null,"RC time constant",{"$f":"D100*0.001*(D84*D82)/(D82+D84)","v":31.174568173465637},"us",null,null,{"$f":"SQRT(H75^2+H78^2)+H87","v":2.8781073839835485},"RSS","RC time constant of selected capacitor and OV divider "]
[]
[]
[null,4,"Current Limit Settings"]
[null,null,"Sense Voltage Drop Requirements"]
[null,null,"Please set this to 20mV to begin with. Should the resulting current limit need to be tweaked then adjust vsense as required."]
[]
[null,null,"Target vsense",18.25,"mV",null,null,null,null,"Desired max sense voltage drop for circuit breaker. 20mV default will disable divider on ISET and use internal ref. ISET pulled up to VCAP",null,null,null,null,null,null,null,null,20]
[null,null,"Calculated",{"$f":"IF(D108=20,IF(D124=\"\",20,((D112*(D136/(D136+D134)))/D148)*1000),((D112*(D136/(D136+D134)))/D148)*1000)","v":18.2620780939775},"mV",null,null,null,null,"Recommended 15-25mV range. Can be adjusted from 5 to 25mV but better accuracy with higher limit"]
[null,null,{"$f":"IF(OR(D168<5,D169>25),\"Warning - Outside range @\",\"\")","v":""},{"$f":"IF(D168<5,D168,IF(D169>25,D169,\"\"))","v":""},{"$f":"IF(OR(D168<5,D169>25),\"mV\",\"\")","v":""},null,null,null,null,null,null,null,null,null,null,null,null,null,{"$f":"5*(1+H147/100)","v":5.1903229413000496},{"$f":"25*(1-H147/100)","v":24.048385293499752}]
["x"]
["x",null,"Vcap",{"$f":"specs!D18","v":2.7},"V",null,null,{"$f":"P112","v":0.74074074074074137},"Y","Vcap reference nominal",null,null,null,null,null,{"$f":"IF(D109=20,0,MAX(P113:P114))","v":0.74074074074074137}]
["x",null,"VCAP min",{"$f":"specs!C18","v":2.68},"V",null,null,null,null,"min",null,null,null,null,null,{"$f":"(D112-D113)/D112*100","v":0.74074074074074137},"%"]
["x",null,"VCAP max",{"$f":"specs!E18","v":2.72},"V",null,null,null,null,"max",null,null,null,null,null,{"$f":"(D114-D112)/D112*100","v":0.74074074074074137},"%"]
["x",null,"Vreg_vos",{"$f":"specs!E21","v":0.25},"mV",null,null,{"$f":"IF(D109=20,P116,P115)","v":1.3689570196419512},"NB: this figure is only a % for max regulation… flb and vcb need to be recalucated from the fixed offsets.",null,null,null,null,null,null,{"$f":"D115/D109*100","v":1.3689570196419512},"%"]
["x",null,"Vref_int_vos",0,"mV",null,null,null,null,null,null,null,null,null,null,{"$f":"(D116+D115)/D109*100","v":1.3689570196419512},"%"]
["x"]
[null,null,{"$f":"IF(D108=20,\"You do not need to adjust the following as 20mV has been selected and internal reference used… move to next section\",\"Please select ISET resistors…\")","v":"Please select ISET resistors…"},null,null,null,null,null,null,null,null,null,"Parallel Calculator"]
[null,null,"Tolerance","E96 (1%)",null,null,null,null,null,"Choose preferred resistor tolerance options",null,null,"R1",88700]
[null,null,"R1 approx",100000,"Ohm",null,null,null,null,"Enter any approximate value for the top resistor",null,null,"R2",270000,null,"E96 (1%)",96,1,{"$f":"IF($D$119=P120,1,0)","v":1},null,"Active E","active %"]
[null,null,"R1 chosen",{"$f":"IF(D108=20,IF(D124=\"\",10000,ROUND(10^(ROUND((LOG10(D120)-INT(LOG10(D120)))*U121,0)/U121),2)*10^(INT(LOG10(D120)))),ROUND(10^(ROUND((LOG10(D120)-INT(LOG10(D120)))*U121,0)/U121),2)*10^(INT(LOG10(D120))))","v":100000},"Ohm",null,null,null,null,{"$f":"IF(D108=20,\"Default 10K ISET pullup selected to enable internal 20mV reference\",\"Calculated closest available top resistor\")","v":"Calculated closest available top resistor"},null,null,"//",{"$f":"(N119*N120)/(N119+N120)","v":66766.099804850848},null,"E192 (0.5%)",192,0.5,{"$f":"IF($D$119=P121,1,0)","v":0},null,{"$f":"IF(S120=1,96,192)","v":96},{"$f":"IF(S120=1,R120,IF(S121=1,R121,IF(S122=1,R122,IF(S123=1,R123,1))))","v":1}]
["x",null,"R2 ideal",{"$f":"(((D108/20)*D121)/(D112-(D108/20)))","v":51048.951048951043},"Ohm",null,null,null,null,"Calculated ideal bottom resistor",null,null,null,null,null,"E192 (0.25%)",192,0.25,0,60000,{"$f":"ROUND(10^(ROUND((LOG10(T122)-INT(LOG10(T122)))*U121,0)/U121),2)*10^(INT(LOG10(T122)))","v":60400}]
[null,null,"R2 chosen",{"$f":"IF(D124=\"\",IF(D108=20,1000000000,ROUND(10^(ROUND((LOG10(D122)-INT(LOG10(D122)))*U121,0)/U121),2)*10^(INT(LOG10(D122)))),D124)","v":51100},"Ohm",null,null,null,null,{"$f":"IF(D108=20,\"Bottom resistor should not be populated\",\"Calculated closest available bottom resistor\")","v":"Calculated closest available bottom resistor"},null,null,null,null,null,"E192 (0.1%)",192,0.1,0]
[null,null,"R2 override?",null,"Ohm",null,null,null,null,"Enter a value here to overide the suggested value. Leave blank otherwise"]
[null,null,{"$f":"IF(D124=\"\",\"\",\"WARNING: R2 Override in place. Value is not calculated. Delete override if not intended\")","v":""}]
[null,null,"R tolerance",{"$f":"V121","v":1},"%",null,null,null,null,"Resistor Tolerance"]
[null,null,"String current",{"$f":"IF(D108=20,specs!E19*0.001,1000000*D114/(D121+D123))","v":18.00132362673726},"uA",null,null,null,null,"VCAP loading current"]
[null,null,"Total VCAP current",{"$f":"D127+D324+D579","v":67.959282737280773},"uA"]
[null,null,{"$f":"IF(IVCAP>100,\"Warning: VCAP current is limited in spec to 100µA. Check other loading on VCAP so as not to exceed this\",\"\")","v":""}]
[]
["x"]
["x"]
["x"]
["x",null,"Riset1",{"$f":"D121","v":100000},"Ohms",null,null,null,null,"Top resistor"]
["x",null,"Riset2 ideal",{"$f":"(((D108/20)*D134)/(D112-(D108/20)))","v":51048.951048951043},null,{"$f":"D207","v":64.750238761561803},null,null,null,"ideal bottom resistor"]
["x",null,"Riset2  ",{"$f":"D123","v":51100},"Ohms",{"$f":"D224","v":69.528312375910005},null,null,null,"Bottom Resistor - realistic"]
["x",null,{"$f":"IF(D109<S110,\"WARNING: Increase Riset2, Sense voltage is < 5mV with tolerance\",IF(D109>T110,\"WARNING: Reduce Riset2, Sense voltage is > 25mV with tolerance\",\"\"))","v":""}]
["x",null,"I string",{"$f":"D113/(D134+D136)*1000000","v":17.736598279285243},"uA",{"$f":"D208","v":75.031120787230336},null,null,null,"Current in resistor string"]
["x",null,"iset lgk",{"$f":"specs!E19/1000","v":0.1},"uA",null,null,null,null,null,null,null,null,null,null,{"$f":"IF(D109=20,0,(D139/D138)*(D134/(D134+D136))*100)","v":0.37313432835820898},"% due to lkg"]
["x",null,null,null,null,null,null,{"$f":"P139","v":0.37313432835820898},"Y","% error due to pin leakage (with specified ISET max input current of 100nA)",null,null,null,null,null,{"$f":"IF(D109=20,0,(D141*2)*(D134/(D134+D136)))","v":1.3236267372600927},"% due to tolerance"]
["x",null,"resistor error",{"$f":"D126","v":1},"%",null,null,{"$f":"P140","v":1.3236267372600927},"N","Risetx resistor tolerance"]
["x"]
["x",null,"R1min",{"$f":"D134*(1-((D139)/100))","v":99900},"Ohms",null,null,null,null,"Add tolerance",null,null,null,null,null,null,null,{"$f":"D112","v":2.7},{"$f":"R143*(R145/(R144+R145))","v":0.91310390469887504}]
["x",null,"R1max",{"$f":"D134*(1+(D141/100))","v":101000},"Ohms",null,null,null,null,null,null,null,null,null,null,null,null,{"$f":"D134","v":100000}]
["x",null,"R2min",{"$f":"D136*(1-(D141/100))","v":50589},"Ohms",null,null,null,null,null,null,null,null,null,null,null,null,{"$f":"D136","v":51100}]
["x",null,"R2max",{"$f":"D136*(1+((D139)/100))","v":51151.099999999991},"Ohms"]
["x",null,null,null,null,null,null,{"$f":"SUM(H112:H146)","v":3.8064588260009939},"SUM",null,null,null,null,null,null,null,null,{"$f":"D113","v":2.68},{"$f":"R147*(R149/(R148+R149))","v":0.90754021652275296},{"$f":"D114","v":2.72},{"$f":"T147*(T149/(T148+T149))","v":0.92108559288876413}]
["x",null,"CS gain",50,"V/V",null,null,{"$f":"SQRT(H112^2+H115^2+H140^2)+H141","v":2.9242420544489063},"RSS","Current sense gain",null,null,null,null,null,null,null,{"$f":"D143","v":99900},null,{"$f":"R148","v":99900}]
["x",null,"cs gain error",0.75,"%",null,null,{"$f":"H147-H115","v":2.4375018063590428},null,"error",null,null,null,null,null,null,null,{"$f":"D146","v":51151.099999999991},{"$f":"((S147-S143)/S143)*100","v":-0.60931599870409869},{"$f":"R149","v":51151.099999999991},{"$f":"((U147-S143)/S143)*100","v":0.87412704609135428}]
["x",null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,1.6319999999999999]
["x",null,"Min",{"$f":"D155*D148/1000","v":0.87834698052790505},"V",null,null,{"$f":"D152*(1-H147/100)","v":0.87834698052790505},{"$f":"D152*(1-H148/100)","v":0.88640253631685539},"Worst case ISET"]
["x",null,"Typ",{"$f":"(D109*50/1000)","v":0.91310390469887504}]
["x",null,"Max",{"$f":"D156*D148/1000","v":0.94786082886984491},"V",null,null,{"$f":"D152*(1+H147/100)","v":0.94786082886984502},{"$f":"D152*(1+H148/100)","v":0.93980527308089457},null,null,null,null,null,null,null,null,{"$f":"R147","v":2.68},{"$f":"R153*(R155/(R154+R155))","v":0.8943823100620758},{"$f":"T147","v":2.72},{"$f":"T153*(T155/(T154+T155))","v":0.90773129976449485}]
["x",null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,{"$f":"D144","v":101000},null,{"$f":"R154","v":101000}]
["x",null,"Vsense min",{"$f":"IF(RSS=1,I155,H155)","v":17.566939610558101},"mV",null,null,{"$f":"D109*(1-(H147/100))","v":17.566939610558101},{"$f":"D109*(1-(H148/100))","v":17.728050726337109},"Worst case sense voltage thresholds",null,null,null,null,null,null,null,{"$f":"D145","v":50589},{"$f":"((S153-S143)/S143)*100","v":-2.0503246717549928},{"$f":"R155","v":50589},{"$f":"((U153-S143)/S143)*100","v":-0.58838921909461928}]
["x",null,"Vsense max",{"$f":"IF(RSS=1,I156,H156)","v":18.957216577396899},"mV",null,null,{"$f":"D109*(1+(H147/100))","v":18.957216577396899},{"$f":"D109*(1+(H148/100))","v":18.796105461617891}]
["x"]
["x",null,"Vcbosmin",{"$f":"specs!C23","v":0.5},"mV"]
["x",null,"typ",{"$f":"specs!D23","v":0.88},"mV"]
["x",null,"max",{"$f":"specs!E23","v":1.1200000000000001},"mV"]
["x"]
["x",null,"Vreg",{"$f":"D155","v":17.566939610558101},"mV"]
["x",null,"Vreg tolerance",0,"mV",null,null,null,null,"This is now included in above specs as %"]
["x",null,"Vos min",{"$f":"D158","v":0.5},"mV",null,null,null,null,"Circuit breaker offset min spec"]
["x",null,"Vos typ",{"$f":"D159","v":0.88},"mV"]
["x",null,"Vos max",{"$f":"D160","v":1.1200000000000001},"mV",null,null,null,null,"Circuit breaker offset max spec"]
["x",null,"Vos sigma",0.05,"mV",null,null,null,null,"unused - 2.60"]
["x",null,"Vreg min",{"$f":"D162","v":17.566939610558101},"mV"]
["x",null,"Vreg max",{"$f":"D156","v":18.957216577396899},"mV",null,null,null,null,"Maximum regulation limit - min,max (all errors)",null,null,{"$f":"D109","v":18.2620780939775}]
["x",null,"Vcb min",{"$f":"D168-D166","v":16.4469396105581},"mV",null,null,null,null,"Minimum circuit breaker limit - min,max",null,null,{"$f":"D109-F166","v":18.2620780939775}]
["x",null,"Vcb max",{"$f":"D169-D164","v":18.457216577396899},"mV",null,null,null,null,"Maximum circuit breaker limit - min,max",null,null,{"$f":"D109-F164","v":18.2620780939775}]
["x"]
["x",null,"Vreg typ",{"$f":"D109","v":18.2620780939775},"mV"]
["x",null,"Vcb typ",{"$f":"D173-D165","v":17.382078093977501},"mV"]
["x"]
["x"]
["x"]
[null,null,"Sense R",{"$f":"((D170/1000)/D29)*1000","v":0.23495628015083003},"mR",null,null,null,null,"Ideal sense resistor value to achieve trip current set above"]
[null,null,"imbalance",10,"%",null,null,null,null,"margin for resistor current imbalance used for resistor power rating only"]
[null,null,"Now select actual resistors to achive close to target",null,null,"Power",null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,"parallel calculator"]
[null,null,"Rsense1",0.5,"mR",{"$f":"IF(D181=\"\",\"\",((D171/1000)^2)/(D181/1000)*(1+(D179/100)))","v":0.74947145632685686},"W",null,null,"Sense Resistor value, power dissipation also shown",null,null,null,{"$f":"IF(D181=\"\",,1)","v":1},null,null,null,null,null,null,null,null,"R1",{"$f":"D181","v":0.5},null,{"$f":"X181","v":0.5}]
[null,null,"Rsense2",0.5,"mR",{"$f":"IF(D182=\"\",\"\",((D171/1000)^2)/(D182/1000)*(1+(D179/100)))","v":0.74947145632685686},"W",null,null,"Sense Resistor value (leave blank if not used), power dissipation also shown",null,null,null,{"$f":"IF(D182=\"\",,1)","v":1},null,null,null,null,null,null,null,null,"R2",{"$f":"D182","v":0.5},"R1//R2=",{"$f":"(X181*X182)/(X181+X182)","v":0.25}]
[null,null,"Rsense3",null,"mR",{"$f":"IF(D183=\"\",\"\",((D171/1000)^2)/(D183/1000)*(1+(D179/100)))","v":""},"W",null,null,"Sense Resistor value (leave blank if not used), power dissipation also shown",null,null,null,{"$f":"IF(D183=\"\",,1)","v":0},null,null,null,null,null,null,null,null,"R3",{"$f":"D183","v":0},"R1//R2//R3=",{"$f":"(Z182*X183)/(Z182+X183)","v":0}]
[null,null,"Rsense4",null,"mR",{"$f":"IF(D184=\"\",\"\",((D171/1000)^2)/(D184/1000)*(1+(D179/100)))","v":""},"W",null,null,"Sense Resistor value (leave blank if not used), power dissipation also shown",null,null,null,{"$f":"IF(D184=\"\",,1)","v":0},null,null,null,null,null,null,null,null,"R4",{"$f":"D184","v":0},"R1//R2//R3//R4=",{"$f":"(Z183*X184)/(Z183+X184)","v":{"$error":"#DIV/0!"}}]
["x"]
[null,null,"No.SenseR",{"$f":"SUM(N181:N184)","v":2},null,null,null,null,null,"No of parallel sense resistors required(up to 4). If more required then please group some resistor as parallel"]
["x"]
[null,null,null,null,null,"Power"]
[null,null,"SenseR total",{"$f":"IF(D184=\"\",IF(D183=\"\",IF(D182=\"\",IF(D181=\"\",\"\",Z181),Z182),Z183),Z184)","v":0.25},"mR",{"$f":"((D171/1000)^2)/(D189/1000)","v":1.3626753751397396},"W",null,null,"Total Sense Resistor value, power dissipation also shown(worst case)"]
[null,null,"tolerance",1,"%",null,null,{"$f":"D190","v":1},"N"]
["x",null,null,null,null,null,null,null,null,null,null,null,null,null,"rmax",{"$f":"D193*(1+(D194/100))","v":10.1}]
[null,null,"Averaging resistors:",null,null,null,null,null,null,null,null,null,null,null,"rmin",{"$f":"D193*(1-(D194/100))","v":9.9}]
[null,null,"Value",10,"Ω",null,null,null,null,"averaging resistors (10 ohm recommended)"]
[null,null,"tolerance",1,"%",null,null,{"$f":"P194","v":0.16427484235703335},"N",null,null,null,null,null,"r tol",{"$f":"((P191*D198*0.000001)-(P192*D198*0.000001))/(D109/1000)*100","v":0.16427484235703335}]
[null,null,"no required",{"$f":"IF(D186=1,0,D186*2)","v":4},null,null,null,null,null,"number required"]
[]
["x",null,"Isen Delta",{"$f":"specs!E17","v":8},"uA",null,null,{"$f":"P197","v":0.43806624628542434},{"$f":"P198","v":0.43806624628542434},"max Leakage imbalance into Sense pins",null,null,null,null,"isense delta",{"$f":"(D197*0.000001*D193)/(D109/1000)*100","v":0.43806624628542434}]
["x",null,"Isense",{"$f":"specs!E16","v":150},"uA",null,null,null,null,"Max leakage into sense pins",null,null,null,null,null,{"$f":"(D197*0.000001*D193)/(D109/1000)*100","v":0.43806624628542434}]
["x",null,null,null,null,null,null,{"$f":"SUM(H190:H198)","v":1.6023410886424576},{"$f":"I197+H194+H190","v":1.6023410886424578}]
["x"]
["x"]
["x",null,"min",{"$f":"IF(RSS=1,I202,H202)","v":0.24599414727839386},null,null,null,{"$f":"D189*(1-H199/100)","v":0.24599414727839386},{"$f":"D189*(1-I199/100)","v":0.24599414727839386},"equiv min sense r value"]
["x",null,"max",{"$f":"IF(RSS=1,I203,H203)","v":0.25400585272160614},null,null,null,{"$f":"D189*(1+H199/100)","v":0.25400585272160614},{"$f":"D189*(1+I199/100)","v":0.25400585272160614},"equiv max"]
[]
[null,null,"Worst case current thresholds",null,null,"Vsense"]
[]
[null,null,"Min DC",{"$f":"(F207/1000)/(D203/1000)","v":64.750238761561803},"A",{"$f":"D170","v":16.4469396105581},"mV",{"$f":"(F208-F207)/2","v":1.0051384834193993},null,"This is the minimum DC current that would cause the cct breaker to trip"]
[null,null,"Max DC",{"$f":"(F208/1000)/(D202/1000)","v":75.031120787230336},"A",{"$f":"D171","v":18.457216577396899},"mV",{"$f":"F208-H207","v":17.452078093977498},null,"This is the maximum DC current that would cause the cct breaker to trip"]
[null,null,"Min Reg",{"$f":"(F209/1000)/(D203/1000)","v":69.159585979350268},"A",{"$f":"D168","v":17.566939610558101},"mV",{"$f":"(H207/H208)*100","v":5.7594200415952788},null,"Minimum regulation current"]
[null,null,"Max Reg",{"$f":"(F210/1000)/(D202/1000)","v":77.063689470395573},"A",{"$f":"D169","v":18.957216577396899},"mV",null,null,"This is the maximum peak current when in regulation (only present during TIMER cycle)"]
[]
["x",null,"Min DC",{"$f":"(F212/1000)/(D202/1000)","v":0},"A",{"$f":"F170","v":0},"mV",null,null,"This is the minimum DC current that would cause the cct breaker to trip"]
["x",null,"Max DC",{"$f":"(F213/1000)/(D202/1000)","v":0},"A",{"$f":"F171","v":0},"mV",null,null,"This is the maximum DC current that would cause the cct breaker to trip"]
["x",null,"Min Pk",{"$f":"(F214/1000)/(D202/1000)","v":0},"A",{"$f":"F168","v":0},"mV",null,null,"Min peak in regulation"]
["x",null,"Max Pk",{"$f":"(F215/1000)/(D202/1000)","v":0},"A",{"$f":"F169","v":0},"mV",null,null,"This is the maximum peak current when in regulation (only present during TIMER cycle)"]
["x"]
["x",null,"Worst case figures from above data",null,null,null,null,null,null,"Select worst case from each of the above for worst case design"]
["x",null,"Min DC",null,"A",null,"mV",null,null,"This is the minimum DC current that would cause the cct breaker to trip"]
["x",null,"Max DC",null,"A",null,"mV",null,null,"This is the maximum DC current that would cause the cct breaker to trip"]
["x",null,"Min pk",null,"A",null,"mV",null,null,"Min peak in regulation"]
["x",null,"Max Pk",null,"A",null,"mV",null,null,"This is the maximum peak current when in regulation (only present during TIMER cycle)"]
[]
[null,null,"Nominal Figures"]
[null,null,"I CB",{"$f":"(F224/1000)/(D189/1000)","v":69.528312375910005},"A",{"$f":"D174","v":17.382078093977501},"mV",null,null,"Circuit breaker trip point"]
[null,null,"I Reg",{"$f":"(F225/1000)/(D189/1000)","v":73.048312375910001},"A",{"$f":"M171","v":18.2620780939775},"mV",null,null,"Regulation current"]
[]
[null,null,"% tolerance on Vcb",null,{"$f":"((D208-D207)/2)/D224*100","v":7.3933061758238692},"%",null,null,null,"Circuit breaker threshold"]
[null,null,"% tolerance on Vreg",null,{"$f":"((D210-D209)/2)/D225*100","v":5.4101889790214601},"%",null,null,null,"Current regulation point"]
[]
[null,5,"Fet Selection"]
[null,null,"Select a suitable MOSFET and complete the white cells. Adjust RDSon and Qty to achieve desired maximum Tj and Tc"]
[]
[null,null,"FET P/N",null,"PSMNR51"]
[null,null,"Package Type",null,"LFPAK"]
[null,null,"Thermal resistance J-A",null,42,"K/W(C/W)**","Junction to Ambient thermal resistance of FET and PCB. Air flow to be considered also!"]
[null,null,"Max DC Current",null,{"$f":"IF(G236=\"\",D208,G236)","v":75.031120787230336},"A",null,null,null,"Enter number here to override max DC current"]
[null,null,"Max datasheet RDSON",null,0.56999999999999995,"mR","Enter the maximum specified Rdson @ Vgs=10V and T=25C"]
[null,null,{"$f":"IF(G236=\"\",\"\",\"Warning: maximum FET current has been manually entered. This may not reflect actual design maximum currents! Check two cells up - use with caution!\")","v":""}]
[null,null,"The maximum specified Rdson @ T=25 need to be temperature derated. Check the Ron temperature TPC on Mosfet datasheet:"]
[null,null,"TC temp",null,90,"C","Select a temperature to determine maximum derate. Use max PCB temp perhaps."]
[null,null,"Rdson TC",null,1.4,null,"Enter TC factor here from where TC temp intersects. (1.4 default if blank)"]
[]
[null,null,"FET RDSon (at hot)",null,{"$f":"IF(E241=\"\", E237*1.4,E237*E241)","v":0.79799999999999993},"mR","Worst case including TC"]
[null,null,"No of FET",null,3,null,"Quantity of FETs used"]
[null,null,"Total RDSon",null,{"$f":"E243/E244","v":0.26599999999999996},"mR","RDSon derating can be verified form datasheet TPC (rdson v temp)"]
[null,null,"Vdrop",null,{"$f":"E249*E244*(E245/1000)","v":2.1954105942343597E-2},"V"]
[null,null,"DC current each FET",null,{"$f":"E236/E244","v":25.010373595743445},"A"]
[null,null,"Tolerance",null,10,"%","~5-10% To account for some margin of errors; only used with multiple FETS - ignored with single as 0 is used"]
[null,null,"Add margin to DC",null,{"$f":"IF(E244=1,E247,E247*(1+(E248/100)))","v":27.511410955317793},"A","Note: Fets will naturally share current due to Rdson temp coeff… however in some cases trace impedance can influence"]
[null,null,"Power through each FET",null,{"$f":"E246*E249","v":0.60398843073639907},"W"]
[null,null,"total power",null,{"$f":"E250*E244","v":1.8119652922091971},"W"]
[null,null,"Ambient system temperature",null,{"$f":"D32","v":60},"C","Maximum specified in section 1"]
[null,null,"Max FET junction temp",null,175,"C","Maximum datasheet specified junction temperature of MOSFET"]
[]
[null,null,"Temp Rise expected",null,{"$f":"E250*E235","v":25.367514090928761},"C","Predicted max Tj at worst case max DC load"]
[null,null,"Maximum Tj",null,{"$f":"E255+E252","v":85.367514090928765},"C","Maximum predicted junction temp based on above parameters"]
[null,null,{"$f":"IF(E256<E253,IF(E256<E240*0.98,\"\",\"WARNING: FET junction temp approaches or exceeds TC derate figure quoted above - risk of thermal runaway!!\"),\"WARNING: FET junction temperature exceeded… choose more FETs or lower RDSon\")","v":""}]
[]
[null,null,"Maximum PCB temp",null,100,"C","Maximum preferred system PCB temp"]
[null,null,"Thermal resistance J-C",null,0.5,"K/W(C/W)","Junction to Case thermal resistance"]
[null,null,"Case temperature",null,{"$f":"E256-(E250*E260)","v":85.065519875560568},"C","Estimated case temperature at maximum DC load"]
[]
[null,null,"Enter Vth min and max of MOSFET selected"]
[null,null,"Vth min",null,1.2,"V","Min Vgsth at 25C"]
[null,null,"Vth max",null,2.2000000000000002,"V","Max Vgsth at 25C"]
[null,null,"Gate - Drain Capacitances"]
[null,null,"Crss min",null,700,"pF","From datasheet TPC, select Crss at max Vout of this design"]
[null,null,"Crss max",null,2500,"pF","From datasheet TPC, select where Crss intersects the y axis"]
[null,null,"Ciss max",null,8000,"pF","From ds spec or TPC"]
[]
[null,null,"FET transconductance A",null,40,"A","Refer to the MOSFET Transfer Characteristic. At 25C, Enter the current (A) at which first 0.5V of VGS, drain current conduction occurs. If no entry, 25A will be used."]
[null,null,"FET transconductance B",null,255,"A","Refer to the MOSFET Transfer Characteristic. At 25C, Enter the current (B) at which second 0.5V of VGS, drain current conduction occurs. If no entry, 25V will be used."]
[]
[null,null,"* The units of Kelvin are equal to the units of Celsius. Therefore terms are used interchangeably on some datasheets"]
[null,null,"* 2Oz Copper should be used where available on FET footprint and cooling area for greater heat transfer"]
[]
[null,6,"Determine thermal power derating factors"]
[]
[null,null,"TmaxJ",null,{"$f":"E253","v":175},"C",null,null,null,"Max junction temp spec of FET"]
[null,null,"Worst case case temp",null,{"$f":"E261","v":85.065519875560568},"C",null,null,null,"cast temp at worst case Tj"]
[null,null,"De-rating Factor",null,{"$f":"IF(((E279-25)/(E279-E280))>0,((E279-25)/(E279-E280)),1000000)","v":1.6678808816423896},null,null,null,null,"Worst case Tj derating factor. This number will be applied to all SOA checks"]
[]
[null,8,"SOA"]
[]
[null,"****","ACTION REQUIRED - click here to populate SOA table",null,null,null,null,null,null,"Enter SOA data"]
[]
[null,null,"Next an SOA time must be selected to design around. Start at 1000µs. The goal is to have a reasonable range on PSET below. Majority of designs will use 1ms."]
[null,null,"Select SOA line",300,"µs",null,null,null,null," This is an iterative process depending on errors shown as you work through the tool"]
[null,null,{"$f":"IF(D301>D302,\"WARNING: Selected SOA time is too high and cannot be supported on this design. Please select a smaller time or choose a different MOSFET.\",\"\")","v":""}]
[null,null,"Max I @Vmax",{"$f":"VLOOKUP(D288,'FET SOA CP'!B14:D18,3,TRUE)","v":130},"A",null,null,null,null,"Calculated current at V and t intersect from entered SOA data"]
[null,null,"derated",{"$f":"D290/E281","v":77.943216107847505},"A"]
[null,null,"derated P",{"$f":"D291*D25","v":795.02080430004446},"W"]
[]
[]
[null,9,"PSET"]
[null,null,"PSET min clamp",{"$f":"D469","v":6.2990674539835183},"A",null,null,null,null,"Hypothetical if PSET was set too low and clamp was active"]
[null,null,"ICBos",{"$f":"(specs!E23/D202)","v":4.5529538502901277},"A"]
[null,null,"PSET min clamp ICB",{"$f":"D296-D297","v":1.7461136036933906},"A"]
[]
[null,null,"PSET min clamp",{"$f":"D473","v":64.250488030631885},"W"]
[null,null,"PSET max clamp",{"$f":"D472","v":128.7835517653493},"W"]
[null,null,"PSET max SOA",{"$f":"D292","v":795.02080430004446},"W"]
[null,null,"PSET max system",{"$f":"(8*specs!C38)/(50*D465*0.001)*(1-(($H$324/100)))","v":901.04314897857489},"W"]
[]
[null,null,{"$f":"IF(D303<D302,\"FYI: In this design case the PSET pin is limited and cannot reach the maximum SOA power allowed!\",\"\")","v":""}]
[null,null,{"$f":"D472","v":128.7835517653493},null,{"$f":"MIN(D302,D303)","v":795.02080430004446},null,null,null,null,"This is the range of power levels calculated. FET is not suitable if there is inadequate margin in this range."]
[null,null,"Power limit",180,"W",null,null,null,null,"Select a value close to centre of range to allow margin"]
[null,null,{"$f":"IF(D350<C306,\"Warning - Power limit too low, cannot maintain this power level as it will clamp the current limit!\",IF(D350>E306,\"Warning power limit too high, may exceed SOA\",\"\"))","v":""}]
[null,null,"PSET Target",{"$f":"(D307*50*D465*0.001)/8","v":0.28125},"V",null,null,null,null,"Target PSET voltage"]
[]
["x",null,"min",{"$f":"specs!C18","v":2.68},"V"]
["x",null,"Vref",2.7,"V",null,null,{"$f":"100*(D312-D311)/D312","v":0.74074074074074137}]
["x",null,"max",{"$f":"specs!E18","v":2.72},"V"]
["x",null,"PSET input current",0.1,"uA",null,null,{"$f":"P330","v":0.37037037037037035}]
[]
[null,null,"Tolerance","E96 (1%)",null,null,null,null,null,"Choose preferred resistor tolerance options"]
[null,null,"R1 approx",100000,"Ohm",null,null,null,null,"Enter any approximate value for the top resistor",null,null,null,null,null,"E96 (1%)",96,1,{"$f":"IF($D$316=P317,1,0)","v":1},null,"Active E","active %"]
[null,null,"R1 chosen",{"$f":"ROUND(10^(ROUND((LOG10(D317)-INT(LOG10(D317)))*U318,0)/U318),2)*10^(INT(LOG10(D317)))","v":100000},"Ohm",null,null,null,null,"Calculated closest available top resistor",null,null,null,null,null,"E192 (0.5%)",192,0.5,{"$f":"IF($D$316=P318,1,0)","v":0},null,{"$f":"IF(S317=1,96,192)","v":96},{"$f":"IF(S317=1,R317,IF(S318=1,R318,IF(S319=1,R319,IF(S320=1,R320,1))))","v":1}]
["x",null,"R2 ideal",{"$f":"(D309*D318)/(D312-D309)","v":11627.906976744185},"Ohm",null,null,null,null,"Calculated ideal bottom resistor",null,null,null,null,null,"E192 (0.25%)",192,0.25,{"$f":"IF($D$316=P319,1,0)","v":0},60000,{"$f":"ROUND(10^(ROUND((LOG10(T319)-INT(LOG10(T319)))*U318,0)/U318),2)*10^(INT(LOG10(T319)))","v":60400}]
[null,null,"R2 chosen",{"$f":"IF(D321=\"\",ROUND(10^(ROUND((LOG10(D319)-INT(LOG10(D319)))*U318,0)/U318),2)*10^(INT(LOG10(D319))),D321)","v":11500},"Ohm",null,null,null,null,"Calculated closest available bottom resistor",null,null,null,null,null,"E192 (0.1%)",192,0.1,{"$f":"IF($D$316=P320,1,0)","v":0}]
[null,null,"R2 override?",null,"Ohm",null,null,null,null,"Enter a value here to overide the suggested value. Leave blank otherwise"]
[null,null,{"$f":"IF(D321=\"\",\"\",\"WARNING: R2 Override in place. Value is not calculated. Delete override if not intended\")","v":""}]
[null,null,"R tolerance",{"$f":"V318","v":1},"%",null,null,{"$f":"P326","v":1.7937219730941705},"N","Resistor Tolerance"]
[null,null,"String Current",{"$f":"1000000*D313/(D318+D320)","v":24.394618834080717},"uA",null,null,{"$f":"SUM(H312:H323)","v":2.9048330842052819},null,"VCAP current load",null,null,null,null,null,"R%"]
[null,null,"Total VCAP current",{"$f":"IVCAP","v":67.959282737280773},"uA"]
[null,null,{"$f":"IF(IVCAP>100,\"Warning: VCAP current is limited in spec to 100µA. Check other loading on VCAP so as not to exceed this\",\"\")","v":""},null,null,null,null,null,null,null,null,null,null,null,null,{"$f":"D323*2*(D318/(D318+D320))","v":1.7937219730941705}]
[]
["x",null,"PSET min",{"$f":"IF(RSS=1,I328,H328)","v":0.2703860926220113},"V",null,null,{"$f":"D329*(1-(($H$324/100)))","v":0.2703860926220113},null,"Falling minimum threshold"]
[null,null,"PSET",{"$f":"D312*(D320/(D320+D318))","v":0.27847533632286997},"V",null,null,null,null,"Falling typical threshold",null,null,null,null,null,"I%"]
["x",null,"PSET Max",{"$f":"IF(RSS=1,I330,H330)","v":0.28656458002372864},"V",null,null,{"$f":"D329*(1+(($H$324/100)))","v":0.28656458002372864},null,"Falling maximum threshold",null,null,null,null,null,{"$f":"((D314*10^-6)/(D312/(D318+D320)))*(D318/(D318+D320))*100","v":0.37037037037037035}]
["x"]
["x"]
["x"]
["x"]
["x",null,"R1 PSET",{"$f":"D318","v":100000},"Ohm"]
["x",null,"R2 ideal",{"$f":"(D309*D335)/(D312-D309)","v":11627.906976744185},"Ohm",null,null,null,null,"ideal"]
["x",null,"R2 real",{"$f":"D320","v":11500},"Ohm",null,null,null,null,"practical"]
["x"]
["x",null,"R tolerance",{"$f":"D323","v":1},"%"]
["x"]
["x",null,"min",{"$f":"D328","v":0.2703860926220113},"V"]
["x",null,"VPSET nom",{"$f":"D312*(D337/(D337+D335))","v":0.27847533632286997},"V"]
["x",null,"max",{"$f":"D330","v":0.28656458002372864},"V"]
["x"]
["x",null,"PWR min",{"$f":"D349/D26*D202","v":3.1740331047524553},"mV"]
["x",null,"PWR mV",{"$f":"D350/D27*D189","v":3.7130044843049324},"mV"]
["x",null,"PWR max",{"$f":"D351/D25*D203","v":4.6415311535200043},"mV"]
["x"]
[null,null,"PWR min",{"$f":"D341*8/(50*D203*0.001)","v":170.31802360450843}]
[null,null,"PWR",{"$f":"D342*8/(50*D465*0.001)","v":178.22421524663676},"W"]
[null,null,"PWR max",{"$f":"D343*8/(50*D202*0.001)","v":186.38790113940124}]
[]
[null,null,"min",{"$f":"D349/D26","v":12.902880576099124}]
[null,null,"PSET I @ Vin",{"$f":"D350/D27","v":14.852017937219729},"A"]
[null,null,"max",{"$f":"D351/D25","v":18.27332364111777}]
[]
[null,null,"min ICB PSET",{"$f":"D353-(specs!E23/D202)","v":8.3499267258089951},"A"]
[null,null,"typ ICB PSET",{"$f":"D354-(specs!D23/D465)","v":11.33201793721973},"A"]
[null,null,"max",{"$f":"D355-(specs!C23/D203)","v":16.304865061747922},"A"]
["x"]
["x"]
[]
[null,null,"derated Ireg max at short",{"$f":"D355*E281","v":30.477727145084227},"A",null,null,null,null,"Calculated worse case derated current due to power limit"]
[null,null,"derated icb max at short",{"$f":"D359*E281","v":27.19457271424832},"A"]
[null,null,{"$f":"IF(D350<C306,\"Warning - Power limit too low, cannot maintain this power level as it will clamp the current limit!\",\"\")","v":""}]
[]
[null,"****","ACTION REQUIRED - Click here to go back to SOA and check where Vin insertects:"]
[null,null,"SOA current:",{"$f":"IF(D502<0.5,D364,D363)","v":30.477727145084227},"A",null,null,null,null,"Check SOA for actual power limit programmed"]
[null,null,"powerup SOA",{"$f":"'FET SOA CP'!B26","v":7000},"us"]
[null,null,{"$f":"IF(D369<D288,\"WARNING - SOA is less than designed to previously in SOA section. Please revisit the design!\",\"SOA Status is OK!\")","v":"SOA Status is OK!"}]
[]
[null,7,"Vout ramp time"]
[]
["x"]
["x",null,"Crss min",{"$f":"E267","v":700},"pF",null,null,null,null,"From section 6"]
["x",null,"Crss max",{"$f":"E268","v":2500},"pF",null,null,null,null,null,null,null,null,null,null,null,null,{"$f":"D375","v":700}]
["x",null,null,{"$f":"D376*1.3","v":3250},null,null,null,null,null,null,null,null,null,null,null,null,null,{"$f":"R376*1.3","v":910}]
["x",null,null,{"$f":"D377*0.8","v":2600},null,null,null,null,null,null,null,null,null,null,null,null,null,{"$f":"R377*0.8","v":728}]
["x"]
["x",null,"Total equiv C",{"$f":"(D377+(D378*(E244-1)))/1000","v":8.4499999999999993},"nF",null,null,null,null,"Total equiv Cdg due to all MOSFETs",null,null,null,null,null,null,null,{"$f":"(R377+(R378*(E244-1)))/1000","v":2.3660000000000001}]
["x"]
["x",null,"min",{"$f":"E244 *D375/1000","v":2.1},"nF"]
["x",null,"Total equiv C",{"$f":"D375*1.3*E244/1000","v":2.73},"nF"]
["x",null,"max",{"$f":"E244*D376/1000","v":7.5},"nF"]
["x"]
["x",null,"state machine limit",90,"ms",null,null,null,null,"100 typical"]
["x"]
["x"]
["x"]
["x"]
[null,null,"Adding capacitance on the gate pin will allow the ADM127x to control the slew rate of the output voltage ramp. For a fixed load capacitance, this will control the inrush current",null,null,null,null,null,null,null,null,null,null,null,null,{"$f":"E269/1000","v":8}]
["x"]
["x"]
["x"]
["x"]
["x"]
["x"]
["x"]
["x"]
["x"]
[null,null,"Using this cap, the inrush can be controlled below the minimum circuit breaker currents. This allows the TIMER to be used specifically for fault protection only."]
[]
[null,null,"Gate cap",22,"nF",null,null,null,null,"Choose gate capacitor to keep inrush low enough"]
[null,null,"Tolerance",10,"%",null,null,null,null,"Tolerance on this cap"]
["x",null,"Gate cap min",{"$f":"D403*(1-(D404/100))","v":19.8},"nF",null,null,null,null,null,null,null,null,null,null,{"$f":"D403*(1+(D404/100))","v":24.200000000000003}]
["x",null,"Gate cap max",{"$f":"D403*(1+(D404/100))","v":24.200000000000003},"nF"]
["x",null,"Following numbers are used for estimating power up profiles",null,null,null,null,null,null,null,null,null,null,null,null,{"$f":"P405+(P391*E244)","v":48.2}]
["x"]
["x",null,"min",{"$f":"D405+D382","v":21.900000000000002},"nF"]
["x",null,"Total Cgate",{"$f":"CGATE+D383","v":24.73},"nF"]
["x",null,"max",{"$f":"D406+D384","v":31.700000000000003},"nF"]
["x"]
["x",null,"min",{"$f":"specs!C20","v":20},"uA"]
["x",null,"gate current",{"$f":"specs!D20","v":25},"uA"]
["x",null,"max",{"$f":"specs!E20","v":30},"uA"]
["x"]
["x",null,"min",{"$f":"D409*D25/D415","v":7.4459999999999997},"ms"]
["x",null,"Ramp time",{"$f":"D410*D27/D414","v":11.8704},"ms"]
["x",null,"max",{"$f":"D411*D26/D413","v":20.922000000000001},"ms"]
["x"]
["x",null,"min",{"$f":"D36*D413/D411/1000","v":1.7034700315457412},"A"]
["x",null,"Inrush Cload only",{"$f":"D33*D414/D410/1000","v":3.0327537403962799},"A"]
["x",null,"max",{"$f":"D35*D415/D409/1000","v":4.5205479452054798},"A"]
["x"]
["x"]
["x"]
["x"]
["x"]
["x"]
["x"]
["x"]
["x"]
["x"]
["x"]
["x"]
["x"]
["x"]
["x"]
["x"]
["x",null,"total DC",{"$f":"D30+(D26/D31)","v":5.1320000000000005E-2},"A"]
["x"]
["x",null,"power in FET",null,"W"]
["x",null,"time typ max",null,"us"]
["x",null,"time typ min",null,"us"]
["x",null,"RMS current",null,"A"]
["x",null,"Peak current",null,"A"]
["x",null,"power in FET",null,"W"]
["x"]
[null,null,"min",{"$f":"D417","v":7.4459999999999997},"ms"]
[null,null,"Vout ramp time",{"$f":"D418","v":11.8704},"ms",null,null,null,null,"Nominal vout ramp time"]
[null,null,"max",20.922000000000001,"ms"]
[null,null,{"$f":"IF(D451>D386,\"Warning, startup ramp time exceeds 90ms! Startup may fail and report a FET Fault. Disable FET Health feature on PMBUS or reduce startup ramp time!\",\"\")","v":""}]
[]
[null,null,"min",{"$f":"D440+D421","v":1.7547900315457412},"A"]
[null,null,"Inrush current+static",{"$f":"D440+D422","v":3.0840737403962799},"A",null,null,null,null,"This current is the expected inrush + any static loads from section 1"]
[null,null,"max",{"$f":"D440+D423","v":4.5718679452054793},"A"]
[]
["x",null,"Min ICB from PSET",{"$f":"D476","v":8.3499267258089951},"A"]
["x"]
["x"]
["x"]
["x"]
["x"]
["x",null,"pset precalc"]
["x",null,"Rsense",{"$f":"D189","v":0.25},"mR"]
["x",null,"clamp min",{"$f":"specs!C36","v":1.6},"mV"]
["x",null,"Clamp typ",{"$f":"specs!D36","v":2},"mV"]
["x",null,"clamp max",{"$f":"specs!E36","v":2.4},"mV"]
["x",null,"Imin",{"$f":"D466/D203","v":6.2990674539835183},"A"]
["x",null,"Ityp",{"$f":"D467/D465","v":8},"A"]
["x",null,"Imax",{"$f":"D468/D202","v":9.7563296791931293},"A"]
["x",null,"max power clamp",{"$f":"D26*D471","v":128.7835517653493},"W"]
["x",null,"min power clamp",{"$f":"D25*D469","v":64.250488030631885},"W"]
["x",null,"min power setting I",{"$f":"D353","v":12.902880576099124},"A"]
["x",null,"max icbos",{"$f":"D297","v":4.5529538502901277}]
["x",null,"min power ICB",{"$f":"D474-D475","v":8.3499267258089951},"A"]
[null,null,"Margin on PSET",{"$f":"(D458-D456)/D458*100","v":45.246609996298773},"%","See Startup Profile - worst case"]
[null,null,"Margin on ISTART",{"$f":"(D612-D456)/D612*100","v":8.3777880548491677},"%"]
[null,null,{"$f":"IF(D456>D458,\"WARNING: Increase gate capacitor(ramp time) to reduce inrush or adjust PSET. Inrush may trip circuit breaker with PSET!\",\"\")","v":""}]
[null,null,{"$f":"IF(D456>D612,\"WARNING: Increase gate capacitor(ramp time) to reduce inrush or adjust ISTART. Inrush may trip circuit breaker with ISTART!\",\"\")","v":""}]
[null,null,{"$f":"IF(D403>100,\"Warning: Recommended maximum for Cgate is 100nF!\",\"\")","v":""}]
[]
[]
[null,10,"TIMER"]
[null,null,"Selecting TIMER capacitor based on SOA requirements for Fault protection"]
[null,null,"SOA line chosen",{"$f":"D288","v":300},"us"]
[null,null,"SOA const power",{"$f":"D369","v":7000},"us",null,null,null,null,null,10,{"$f":"LN(K487)","v":2.3025850929940459}]
["x",null,"Total Cg",{"$f":"(D405+D380)","v":28.25},"nF"]
["x",null,"Igate",{"$f":"specs!D20","v":25},"uA"]
["x",null,"Current limit ICB",{"$f":"D358","v":11.33201793721973},"A"]
["x",null,"IREG",{"$f":"D354","v":14.852017937219729},"A"]
["x",null,"Iclamp max",{"$f":"D471","v":9.7563296791931293},"A"]
[]
["x",null,"gm1",{"$f":"IF(E271=\"\",25,E271)","v":40},"A",null,null,null,null,"Gm stage 1 Amps per 0.5V Vgs (default 25)"]
["x",null,"gm2",{"$f":"IF(E272=\"\",100,E272)","v":255},"A",null,null,null,null,"GM stage 2 Amps per 1V Vgs (default 100)"]
["x",null,"gm2 bal",{"$f":"D495-D494","v":215},"A",null,null,null,null,"GM stage 1 Amps per 0.5V Vgs (default 100)"]
["x",null,"gm1",{"$f":"D494/0.5","v":80},"A/V"]
["x",null,"gm2",{"$f":"D496/0.5","v":430},"A/V"]
["x",null,"gm1 time to ICB",{"$f":"(D490/D497)*D488/D489*1000","v":160.06475336322868},"us",null,null,null,null,"0A to ICB"]
["x",null,"stage 2 time if using gm1",{"$f":"((D491-D490)/D497)*D488/D489*1000","v":49.719999999999992},"us",null,null,null,null,"ICB to IREG"]
["x",null,"stage 2 time if using gm2",{"$f":"((D491-D490)/D498)*D488/D489*1000","v":9.2502325581395333},"us",null,null,null,null,"ICB to IREG"]
["x",null,"timer to ramp 2 ratio",{"$f":"D531/D500","v":3.959012575687006}]
["x"]
[null,null,"FET gm I ramp time avg",{"$f":"D499/3","v":53.354917787742892},"us",null,null,null,null,"Expected time for FET to ramp from 0A to VCB. Assuming transfer characteristics are correctly entered and 30% average from EXP curve"]
[]
[null,null,null,null,null,null,null,null,null,"Expected time for FET to ramp from  VCB to Vreg. Assuming transfer characteristics are correctly entered "]
[]
[null,null,"Ton max",{"$f":"MAX(D487,D486)-D504","v":6946.645082212257},"us",null,null,null,null,"SOA time previously selected , less calculated margin on transconductance of FET with gate ramp dvdt"]
[null,null,"Margin",10,"%",null,null,null,null,"As SOAs are typical and often difficult to accurately read some margin should be added - recommend 10-20%",null,null,null,null,null,null,"MIN","TYP"]
[]
[null,null,"Max TIMER",{"$f":"(D508/(1+(D509/100)))","v":6315.1318929202334},"us",null,null,null,null,"Minimum recommended TIMER on time to clear power up"]
["x"]
["x"]
["x"]
["x"]
["x",null,"T required",{"$f":"D511","v":6315.1318929202334},"us",null,null,null,null,"Desired TIMER time, use some value greater than the time to charge the load - else error will display"]
["x",null,"I tmr",{"$f":"specs!D27","v":60},"uA"]
["x",null,"min",{"$f":"specs!C27","v":57},"uA"]
["x",null,"max",{"$f":"specs!E27","v":63},"uA"]
["x",null,"Vtimer",{"$f":"specs!D28","v":1},"V"]
["x",null,"min",{"$f":"specs!C28","v":0.98},"V"]
["x",null,"max",{"$f":"specs!E28","v":1.02},"V"]
["x"]
[null,null,"Max Tmr Cap",{"$f":"((D516*10^-6)*(D518*10^-6)*1000000000/D522)/(1+(D526/100))","v":320.82220846386207},"nF",null,null,null,null,"ideal minimum TIMER cap to suit "]
[null,null,"Timer Cap",10,"nF",null,null,null,null,"Choose realistic value less than recommendation"]
[null,null,"Tolerance",10,"%"]
["x",null,"Cmin",{"$f":"D525*(1-(D526/100))","v":9},"nF"]
["x",null,"Cmax",{"$f":"D525*(1+(D526/100))","v":11},"nF"]
[]
[null,null,"T on min",{"$f":"(D521*(D527*10^-9)/(D519*10^-6))*1000000","v":140.00000000000003},"us",null,null,null,null,"Min timer including tolerances"]
[null,null,"T on max",{"$f":"(D522*(D528*10^-9)/(D518*10^-6))*1000000","v":196.84210526315792},"us",null,null,null,null,"Max timer including tolerances"]
[]
["x",null,"T Initial nom",{"$f":"(1*(D525*10^-9)/(3*10^-6))*1000","v":3.333333333333333},"ms",null,null,null,null,"Initial power up time delay"]
[null,null,"Fault SOA status",{"$f":"IF(D511<D531,\"Insufficient!!\",IF(D535<10,\"WARNING:\",\"OK\"))","v":"OK"},{"$f":"IF(D535<10,\"- Margin <10%\",\"\")","v":""},null,null,null,null,"Is this timer cap sufficient for SOA"]
[null,null,"Fault SOA margin",{"$f":"(D508-D531)/D508*100","v":97.166371637911993},"%",null,null,null,null,"Margin to SOA limits"]
[null,null,{"$f":"IF(D511<D531,\"Timer is too high. If reduction is not possible or desired then please revisit design from Section 8. Choose an larger SOA time!\",\"\")","v":""}]
[]
["x",null,"Pwrup SOA status",null,null,null,null,null,null,"Is this timer cap sufficient for SOA"]
["x",null,"Pwrup SOA margin",null,null,null,null,null,null,"Margin to SOA limits"]
["x"]
["x",null,{"$f":"IF(D534=\"OK\",\"\",P541)","v":""},null,null,null,null,null,null,null,null,null,null,null,null,"The timer cap selected indicates that there may be an issue with SOA during faults - please review design"]
["x",null,{"$f":"IF($D$538=\"OK\",\"\",P542)","v":"The combination of Gate capacitor, ISTART(if used) and timer cap selected indicates that there may be an issue that could impede startup."},null,null,null,null,null,null,null,null,null,null,null,null,"The combination of Gate capacitor, ISTART(if used) and timer cap selected indicates that there may be an issue that could impede startup."]
["x",null,{"$f":"IF($D$538=\"OK\",\"\",P543)","v":"When using gate capacitance to reduce inrush, this inrush should no exceed any current limits."},null,null,null,null,null,null,null,null,null,null,null,null,"When using gate capacitance to reduce inrush, this inrush should no exceed any current limits."]
["x",null,{"$f":"IF($D$538=\"OK\",\"\",IF(D550=O550,P544,\"\"))","v":"> Try to increase ISTART limit, otherwise disable ISTART"},null,null,null,null,null,null,null,null,null,null,null,null,"> Try to increase ISTART limit, otherwise disable ISTART"]
["x",null,{"$f":"IF($D$538=\"OK\",\"\",P545)","v":"> Add additional gate capacitance to reduce inrush"},null,null,null,null,null,null,null,null,null,null,null,null,"> Add additional gate capacitance to reduce inrush"]
["x",null,{"$f":"IF($D$538=\"OK\",\"\",P546)","v":"> Use a different MOSFET with stronger SOA"},null,null,null,null,null,null,null,null,null,null,null,null,"> Use a different MOSFET with stronger SOA"]
["x"]
[]
[null,11,"ISTART","(optional - tie to VCAP if not used))"]
[null,null,"Use ISTART?","YES",null,null,null,null,null,"ISTART sets a fixed lower current limit at startup. Do you want to use this?",null,null,null,null,"YES"]
[null,null,"Expectd max Inrush",{"$f":"D456","v":4.5718679452054793},"A",null,null,null,null,"Maximum expected inrush current",null,null,null,null,"NO"]
[null,null,"Min PLIM current limit",{"$f":"D357","v":8.3499267258089951},"A",null,null,null,null,"Minimum constant power current limit"]
[null,null,"Max PLIM CL @FB",{"$f":"D359","v":16.304865061747922},"A",null,null,null,null,"Minimum constant power current limit at vout = 0V"]
[null,null,"scale to high range",{"$f":"D552-(D552-D551)/1.5","v":5.8312208720733185},"A",null,null,null,null,"Scaling up to add margin. Scaled to delta/1.5"]
[]
[null,null,{"$f":"D554","v":5.8312208720733185},null,{"$f":"D553","v":16.304865061747922},null,null,null,null,"Choose a threshold based on target recommendation to align with PSET profile or otherwise"]
[null,null,"Istart target",8,"A",null,null,null,null,"ISTART limit should be higher than inrush to ensure circuit breaker does not trip"]
[null,null,null,null,null,null,null,null,null,"Please observe powerup waveforms to see current limit interactions "]
["x",null,"vsense",{"$f":"D557*D465","v":2},"mV"]
["x",null,"vsense+vcbos",{"$f":"D559+(specs!D23)","v":2.88},"mV",null,null,null,null,"add offset to target vcb thresholds"]
["x",null,"Istart target",{"$f":"D560*0.05","v":0.14399999999999999},"V"]
["x"]
["x",null,"min",{"$f":"specs!C18","v":2.68},"V"]
["x",null,"Vref",{"$f":"specs!D18","v":2.7},"V"]
["x",null,"max",{"$f":"specs!E18","v":2.72},"V"]
["x"]
["x",null,"ilkg",{"$f":"specs!E19*0.000000001","v":1.0000000000000001E-7},"A"]
["x",null,"istring",{"$f":"D564/(D584+D586)","v":2.5563340276462791E-5},"A"]
[]
[null,null,"Tolerance","E96 (1%)",null,null,null,null,null,"Choose preferred resistor tolerance options"]
[null,null,"Rtop approx",100000,"Ohm",null,null,null,null,"Enter any approximate value for the top resistor",null,null,null,null,null,"E96 (1%)",96,1,{"$f":"IF($D$570=P571,1,0)","v":1},null,"Active E","active %"]
[null,null,"Rtop chosen",{"$f":"IF(D550=O550,ROUND(10^(ROUND((LOG10(D571)-INT(LOG10(D571)))*U572,0)/U572),2)*10^(INT(LOG10(D571))),IF(D576=\"\",10000,ISTART))","v":100000},"Ohm",null,null,null,null,"Calculated closest available top resistor",null,null,null,null,null,"E192 (0.5%)",192,0.5,{"$f":"IF($D$570=P572,1,0)","v":0},null,{"$f":"IF(S571=1,96,192)","v":96},{"$f":"IF(S571=1,R571,IF(S572=1,R572,IF(S573=1,R573,IF(S574=1,R574,1))))","v":1}]
["x",null,"R2 ideal",{"$f":"((D561*D572)/(D564-D561))","v":5633.8028169014078},"Ohm",null,null,null,null,"Calculated ideal bottom resistor",null,null,null,null,null,"E192 (0.25%)",192,0.25,{"$f":"IF($D$570=P573,1,0)","v":0},60000,{"$f":"ROUND(10^(ROUND((LOG10(T573)-INT(LOG10(T573)))*U572,0)/U572),2)*10^(INT(LOG10(T573)))","v":60400}]
["x",null,"R2 chosen",{"$f":"ROUND(10^(ROUND((LOG10(D573)-INT(LOG10(D573)))*U572,0)/U572),2)*10^(INT(LOG10(D573)))","v":5620},"Ohm",null,null,null,null,"Calculated closest available bottom resistor",null,null,null,null,null,"E192 (0.1%)",192,0.1,{"$f":"IF($D$570=P574,1,0)","v":0}]
[null,null,"Rbottom chosen",{"$f":"IF(D576=\"\",IF(D550=O550,D574,\"DNP\"),D576)","v":5620},"Ohm",null,null,null,null,"Calculated closest available bottom resistor"]
[null,null,"R2 override?",null,"Ohm",null,null,null,null,"Enter a value here to overide the suggested value. Leave blank otherwise"]
[null,null,{"$f":"IF(D576=\"\",\"\",\"WARNING: R2 Override in place. Value is not calculated. Delete override if not intended\")","v":""}]
[null,null,"R tolerance",{"$f":"V572","v":1},"%",null,null,null,"N","Resistor Tolerance"]
[null,null,"String current",{"$f":"IF(D550=O550,1000000*D564/(D572+D575),IF(D576=\"\",specs!E19*0.001,1000000*D564/(D572+D575)))","v":25.563340276462792},"uA"]
[null,null,"Total VCAP current",{"$f":"IVCAP","v":67.959282737280773},"uA"]
[null,null,{"$f":"IF(IVCAP>100,\"Warning: VCAP current is limited in spec to 100µA. Check other loading on VCAP so as not to exceed this\",\"\")","v":""}]
[]
["x"]
["x",null,"R1",{"$f":"D572","v":100000},"Ohm"]
["x",null,"R2 ideal",{"$f":"(D561*D584)/(D564-D561)","v":5633.8028169014078},"Ohm"]
["x",null,"R2 real",{"$f":"D575","v":5620},"Ohm",null,null,null,null,null,null,null,null,null,null,"v%"]
["x",null,{"$f":"IF(D610<D354,IF(D612>D455,\"\",\"Current limit too low\"),\"Current limit too high!\")","v":""},null,null,null,null,null,null,null,null,null,null,null,null,{"$f":"D588*2*(D584/(D584+D586))","v":1.8935807612194659}]
["x",null,"R tolerance",{"$f":"D578","v":1},"%"]
["x",null,null,null,null,null,null,null,null,null,null,null,null,null,null,"I%"]
["x",null,"min",{"$f":"D563*(D575/(D575+D572))*(1-((P587+P590)/100))","v":0.13937334535470997},"V",null,null,null,null,null,null,null,null,null,null,{"$f":"(D567/D568)*(D584/(D584+D586))*100","v":0.37037037037037041}]
["x",null,"Vistart",{"$f":"D564*(D586/(D586+D584))","v":0.14366597235372089},"V"]
["x",null,"max",{"$f":"D565*(D586/(D586+D584))*(1+((P587+P590)/100))","v":0.14800678494394384},"V"]
["x"]
["x",null,"Vreg offset",{"$f":"specs!E22","v":0.4},"mV"]
["x"]
["x",null,"min",{"$f":"(D590/0.05)-D594","v":2.3874669070941992},"mV"]
["x",null,"Istart mV",{"$f":"D591/0.05","v":2.8733194470744174},"mV"]
["x",null,"max",{"$f":"(D592/0.05)+D594","v":3.3601356988788766},"mV"]
["x"]
["x",null,"min",{"$f":"specs!C36","v":1.6},"mV",null,null,{"$f":"IF(D600>D596,1,\"\")","v":""}]
["x",null,"clamp",{"$f":"specs!D36","v":2},"mV",null,null,{"$f":"IF(D601>D597,1,\"\")","v":""}]
["x",null,"max",{"$f":"specs!E36","v":2.4},"mV",null,null,{"$f":"IF(D602>D598,1,\"\")","v":""}]
["x"]
["x"]
["x"]
["x"]
["x",null,null,null,null,null,null,{"$f":"SUM(H602)","v":0}]
["x",null,"min",{"$f":"MAX(D596,D600)/D203","v":9.3992594324623511},"A"]
["x",null,"Current nom",{"$f":"MAX(D597,D601)/D465","v":11.49327778829767},"A",null,null,null,null,{"$f":"specs!E23/D465","v":4.4800000000000004}]
["x",null,"max",{"$f":"MAX(D598,D602)/D202","v":13.659413185453474},"A"]
[]
[null,null,"Istart min",{"$f":"D608-(specs!E23/D203)","v":4.9899122146738879},"A"]
[null,null,"Istart typical",{"$f":"D609-(specs!D23/D465)","v":7.9732777882976702},"A",null,null,null,null,"Actual ISTART current limit range"]
[null,null,"Istart max",{"$f":"D610-(specs!C23/D202)","v":11.626844502288238},"A"]
[null,null,{"$f":"IF(H607=0,\"\",\"Clamp may be active and ISTART will be limited to internal lower limits! Increase ISTART\")","v":""}]
["x"]
["x",null,"Derated",{"$f":"D613*E281","v":13.2984775871256},"A"]
["x"]
[null,null,{"$f":"IF(D612<D551,\"WARNING: ISTART is set too low and will result in inrush tripping circuit breaker. Please use higher level or disable feature!!\",\"\")","v":""}]
[null,null,{"$f":"IF(D614>D357,IF(D550=O551,\"\",\"FYI: ISTART is higher than constant power minimum setting. Power limit may dominate at high VDS. No Action required!\"),\"\")","v":"FYI: ISTART is higher than constant power minimum setting. Power limit may dominate at high VDS. No Action required!"}]
[]
[null,12,"MOSFET SOA analysis at powerup"]
[]
[null,"****","ACTION REQUIRED - Click here to plot worst case power in FET at powerup"]
[null,null,"Vds max",{"$f":"D26","v":13.2},"V"]
[null,null,"VDS test voltage %",80,"% ",null,null,null,null,"As Vout ramps up, VDS ramps down, Choose VDS % to check SOA at startup."]
[null,null,"Vds max",{"$f":"D625*D626/100","v":10.56},"V",null,null,null,null,"(e.g. if Vin max is 12.6V,the vds ramps from 12.6 to 0V. So it would be more reasonable to assume 50% Vin."]
[null,null,null,null,null,null,null,null,null,"However, since SOA is not linear, it would be safer to choose 80-100%)"]
[null,null,"tmin"]
[null,null,"Derated Imax",{"$f":"D657","v":7.6242303378200109},"A",null,null,null,null,"Calculated from powerup average power into load capacitance"]
[null,null,"Maximum ramp time",{"$f":"D658","v":7.4459999999999997},"ms"]
[null,null,"Time SOA",{"$f":"'FET SOA CP'!B32","v":500000},"us",null,null,null,null,"from final data entered into SOA sheet"]
[]
[null,null,"tmax"]
[null,null,"Derated Imax",{"$f":"D665","v":2.9256799435299037},"A",null,null,null,null,"Calculated from powerup average power into load capacitance"]
[null,null,"Maximum ramp time",{"$f":"D666","v":20.922000000000001},"ms"]
[null,null,"Time SOA",{"$f":"'FET SOA CP'!B35","v":1000000},"us",null,null,null,null,"from final data entered into SOA sheet"]
[]
[null,null,"Pwrup SOA status",{"$f":"IF(OR(D632<(D631*1000),D637<(D636*1000)),\"Insufficient!!\",IF(D640<10,\"WARNING\",\"OK\"))","v":"OK"},{"$f":"IF(D640<10,\"- Margin <10%\",\"\")","v":""},null,null,null,null,"Is this timer cap sufficient for SOA"]
["x",null,"Pwrup SOA margin",{"$f":"(D632-(D631*1000))/D632*100","v":98.510800000000003},"%"]
["x",null,"Pwrup SOA margin",{"$f":"(D637-(D636*1000))/D637*100","v":97.907799999999995},"%"]
[null,null,"Pwrup SOA margin",{"$f":"MIN(D640,D641)","v":97.907799999999995},"%",null,null,null,null,"Worst case margin to SOA limits"]
[]
[null,null,{"$f":"IF(D639=\"OK\",\"\",P644)","v":""},null,null,null,null,null,null,null,null,null,null,null,null,"Potential SOA stress at powerup event - please review design"]
[null,null,{"$f":"IF($D$639=\"OK\",\"\",P645)","v":""},null,null,null,null,null,null,null,null,null,null,null,null,"There are a number of ways to avoid this:"]
[null,null,{"$f":"IF($D$639=\"OK\",\"\",P646)","v":""},null,null,null,null,null,null,null,null,null,null,null,null,"1) This SOA verification step used the maximum VDS. However, the Vds is ramping down as vout come up."]
[null,null,{"$f":"IF($D$639=\"OK\",\"\",P647)","v":""},null,null,null,null,null,null,null,null,null,null,null,null,"    If using 100% VDS.. it may be more reasonable to check this verification step at 80% of suggested test voltage VDS."]
[null,null,{"$f":"IF($D$639=\"OK\",\"\",P648)","v":""},null,null,null,null,null,null,null,null,null,null,null,null,"2) Or try adjusting additional gate capacitance to trade off inrush versus powerup times"]
[null,null,{"$f":"IF($D$639=\"OK\",\"\",P649)","v":""},null,null,null,null,null,null,null,null,null,null,null,null,"3) If all these still fail… consider a different MOSFET with a stronger SOA."]
[]
["x",null,"STARTUP"]
["x",null,"DC current",{"$f":"D30","v":0.05},"A"]
["x",null,"Rload",{"$f":"D31","v":10000},"Ohms"]
["x",null,"I_Rload",{"$f":"D26/D653/2","v":6.6E-4},"A"]
["x",null,"I_CLOAD",{"$f":"D423","v":4.5205479452054798},"A"]
["x",null,"TOTAL IFET tmin",{"$f":"D655+D654+D652","v":4.5712079452054795},"A"]
["x",null,"IFET Derated",{"$f":"E281*D656","v":7.6242303378200109},"A"]
["x",null,"time",{"$f":"D449","v":7.4459999999999997},"ms"]
["x"]
["x",null,"Vmax",{"$f":"D26","v":13.2},"V"]
["x",null,"Vtest",{"$f":"D660","v":13.2},"V"]
["x"]
["x",null,"icload MIN",{"$f":"D421","v":1.7034700315457412},"A"]
["x",null,"TOTAL IFET tmax",{"$f":"D663+D652+D654","v":1.7541300315457413},"A"]
["x",null,"IFET Derated",{"$f":"E281*D664","v":2.9256799435299037},"A"]
["x",null,"time",{"$f":"D451","v":20.922000000000001},"ms"]
["x"]
["x"]
["x"]
["x",null,"energy cap",{"$f":"((D35*0.000001)*D26*D26)/2","v":0.28749599999999997},"J"]
["x",null,"energy Rload",{"$f":"(D26*D26/D31)*D451*0.001","v":3.6454492799999999E-4},"J"]
["x",null,"energy Iload",{"$f":"(D26*D30)*D451*0.001","v":1.3808520000000001E-2},"J"]
["x",null,"Total Energy",{"$f":"D672+D671+D670","v":0.301669064928},"J"]
["x",null,"power",{"$f":"D673/(D449*0.001)","v":40.514244551168417},"W"]
["x",null,"derated P",{"$f":"D674*E281","v":67.57293392107816},"W"]
["x",null,"I at Vmax",{"$f":"D675/D625","v":5.1191616606877393},"A"]
["x",null,"non-derated current",{"$f":"D676/E281","v":3.0692609508460924},"A"]
["x"]
["x"]
["x",null,"The foldback feature can be disabled in low current designs where it may not be required."]
["x",null,"Foldback","INACTIVE",null,null,null,null,null,"Default Active, select INACTIVE to disable. This is disabled using PMBUS command so it will be always active at initial powerup."]
["x"]
["x",null,"flb min",{"$f":"D685-specs!E22","v":3.6},"mV"]
["x",null,"flb max",{"$f":"D685+specs!E22","v":4.4000000000000004},"mV"]
["x",null,"lfb typ",4,"mV"]
["x"]
["x",9,"MOSFET SOA analysis at short cct"]
["x"]
["x",null,"Id_max",{"$f":"D210","v":77.063689470395573},"A",null,null,null,null,"Max Drain current at short circuit will be current limit max"]
["x",null,"Derated Imax",{"$f":"D689*E281","v":128.53305433649871},"A",null,null,null,null,"derate this for maximum temp"]
["x"]
["x",null,"Worst case Vds (assuming a dead short with Vout = 0V)"]
["x",null,"Vds_max",{"$f":"D26","v":13.2},"V",null,null,null,null,"Max Vds at short circuit will be max supply voltage"]
["x",null,"Derated Imax",{"$f":"F694*E281","v":128.53305433649871},"A",{"$f":"IF(D681=\"ACTIVE\",D689/(D109/D684),D689)","v":77.063689470395573},null,null,null,"Shows derated foldback current(in blue) and actual foldback current(in black)"]
["x",null,null,{"$f":"D694*D693","v":1696.6363172417828},"W"]
["x"]
["x",null,"Worst case power in FET (this represents a short of unknown impedance)"]
["x",null,"Vds_max",null,"V",null,null,null,null,"Looking at the foldback profile the voltage and current at worst case FET power is determined"]
["x",null,"Derated Imax",null,"A",null,null,null,null,"Shows derated drain current(in red) and actual drain current(in black)"]
["x",null,null,null,"W"]
["x"]
["x",null,"Now plot the blue and red coordinates on SOA worksheet tab"]
["x",null,"click here to go to SOA worksheet"]
["x"]
["x",null,"T_SOA",null,"us",null,null,null,null,"This is the maximum on time allowed to stay within SOA"]
["x"]
["x"]
["x"]
["x"]
[null,13,"PWRGDIN pin"]
[]
[null,null,"Vpwrgd target",10.3,"V",null,null,null,null,"Falling threshold at Vout for power fail detection"]
["x",null,"Vref",{"$f":"specs!D32","v":1},"V",null,null,{"$f":"P714","v":1.0000000000000009},"Y","Internal comparator reference",null,null,null,null,null,"V%"]
["x",null,"min",{"$f":"specs!C32","v":0.99},"V",null,null,null,null,null,null,null,null,null,null,{"$f":"MAX(Q714:Q715)","v":1.0000000000000009},{"$f":"(D715-D713)/D713*100","v":1.0000000000000009}]
["x",null,"max",{"$f":"specs!E32","v":1.01},"V",null,null,null,null,null,null,null,null,null,null,null,{"$f":"(D713-D714)/D713*100","v":1.0000000000000009}]
["x",null,"Ilkg",{"$f":"specs!E33/1000","v":0.05},"uA",null,null,{"$f":"P736","v":2.4805825242718439E-2},"Y","Max UV pin leakage"]
["x"]
["x"]
[]
[null,null,"Tolerance","E96 (1%)",null,null,null,null,null,"Choose preferred resistor tolerance options"]
[null,null,"R1 approx",51100,"Ohm",null,null,null,null,"Enter any approximate value for the top resistor",null,null,null,null,null,"E96 (1%)",96,1,{"$f":"IF($D$720=P721,1,0)","v":1},null,"Active E","active %"]
[null,null,"R1 chosen",{"$f":"ROUND(10^(ROUND((LOG10(D721)-INT(LOG10(D721)))*U722,0)/U722),2)*10^(INT(LOG10(D721)))","v":51100},"Ohm",null,null,null,null,"Calculated closest available top resistor",null,null,null,null,null,"E192 (0.5%)",192,0.5,{"$f":"IF($D$720=P722,1,0)","v":0},null,{"$f":"IF(S721=1,96,192)","v":96},{"$f":"IF(S721=1,R721,IF(S722=1,R722,IF(S723=1,R723,IF(S724=1,R724,1))))","v":1}]
["x",null,"R2 ideal",{"$f":"((D713*D722)/(D712-D713))","v":5494.6236559139779},"Ohm",null,null,null,null,"Calculated ideal bottom resistor",null,null,null,null,null,"E192 (0.25%)",192,0.25,0,60000,{"$f":"ROUND(10^(ROUND((LOG10(T723)-INT(LOG10(T723)))*U722,0)/U722),2)*10^(INT(LOG10(T723)))","v":60400}]
[null,null,"R2 chosen",{"$f":"IF(D725=\"\",ROUND(10^(ROUND((LOG10(D723)-INT(LOG10(D723)))*U722,0)/U722),2)*10^(INT(LOG10(D723))),D725)","v":5490},"Ohm",null,null,null,null,"Calculated closest available bottom resistor",null,null,null,null,null,"E192 (0.1%)",192,0.1,0]
[null,null,"R2 override?",null,"Ohm",null,null,null,null,"Enter a value here to overide the suggested value. Leave blank otherwise"]
[null,null,{"$f":"IF(D725=\"\",\"\",\"WARNING: R2 Override in place. Value is not calculated. Delete override if not intended\")","v":""}]
[null,null,"R tolerance",{"$f":"V722","v":1},"%",null,null,null,"N","Resistor Tolerance"]
["x"]
["x"]
["x",null,"R1",{"$f":"D722","v":51100},"Ohm",null,null,null,null,"Select top resistor"]
["x",null,"R2 ideal",{"$f":"((D713*D730)/(D712-D713))","v":5494.6236559139779},"Ohm",null,null,null,null,"Calculated ideal bottom resistor"]
["x",null,"R2 real",{"$f":"D724","v":5490},"Ohm",null,null,null,null,"Realistic bottom resistor",null,null,null,null,null,"R%"]
["x",null,null,null,null,null,null,null,null,"% accuracy loss due to max leakage",null,null,null,null,null,{"$f":"D734*2*(D730/(D730+D732))","v":1.805972786711433}]
["x",null,"R tolerance",{"$f":"D727","v":1},"%",null,null,{"$f":"P733","v":1.805972786711433},"N","Resistor Tolerance"]
[null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,"I%"]
[null,null,"PG min F",{"$f":"IF(RSS=1,I736,H736)","v":10.016040507011867},"V",null,null,{"$f":"D737*(1-((H740/100)))","v":10.016040507011867},{"$f":"D737*(1-((H742/100)))","v":10.018565741246661},"Falling minimum threshold",null,null,null,null,null,{"$f":"((D716*10^-6)/(D712/(D730+D732)))*(D730/(D730+D732))*100","v":2.4805825242718439E-2}]
[null,null,"PG typ F",{"$f":"D713*((D730+D732)/D732)","v":10.307832422586522},"V",{"$f":"(D737-D736)/D737","v":2.8307786119541465E-2},null,null,null,"Falling typical threshold"]
[null,null,"PG max F",{"$f":"IF(RSS=1,I738,H738)","v":10.599624338161176},"V",null,null,{"$f":"D737*(1+((H740/100)))","v":10.599624338161176},{"$f":"D737*(1+((H742/100)))","v":10.597099103926384},"Falling maximum threshold"]
[]
[null,null,null,{"$f":"specs!E35","v":75},"mV",null,null,{"$f":"SUM(H713:H735)","v":2.8307786119541523},"SUM"]
[null,null,"PG min R",{"$f":"D736+($D$740/1000*D736)","v":10.767243545037758},null,null,null,null,null,"Rising minimum threshold"]
[null,null,"PG typ R",{"$f":"D737+($D$740/1000*D737)","v":11.080919854280511},"V",{"$f":"(D742-D741)/D742","v":2.8307786119541462E-2},null,{"$f":"SQRT(H713^2+H716^2)+H734","v":2.8062804038802587},"RSS","*Rising typical threshold"]
[null,null,"PG max R",{"$f":"D738+($D$740/1000*D738)","v":11.394596163523264},"V",null,null,null,null,"Rising maximum threshold"]
[]
[null,null,"* PWRGD rising threshold may not be observed easily since the PWRGD pin is also gated from VGATE being fully enhanced."]
[]
[]
[]
[null,14,"Recommended Circuit"]
[]
[null,null,"click here to see schematic and BOM"]
[]
[null,null,"DISCLAIMER:"]
[null,null,"This design tool is the property of Analog Devices.  It is a design aid for use with the ADM127x family of hotswap controllers.  It may not be copied, transferred, or used for other purposes without express written approval of Analog Devices Inc. Although ADI has made substantial effort to ensure this spreadsheet software provides accurate results, the complexity, estimates used, component tolerences, PCB thermal variances, and nonlinearities preclude absolute accuracy guarantees.  It is provided \"AS IS\" and all responsibility for the actual design performance and verification is born by the end user. All designs should be verified independently and fully tested prior to manufacture. ADI disclaims any liability for damages of any kind resulting from the use of this spreadsheet software. "]

{"sheet":"FET SOA CP","index":1,"n_rows":37,"n_cols":5,"rows_kept":37,"cut":false,"hidden":false,"merged":[[36,0,36,5],[26,0,26,5],[20,0,20,4]]}
[]
[]
[]
[]
[]
["Section 8:"]
[1,"Paste a snapshot of the preferred MOSFET SOA diagram in white box. Right click image and send to back."]
[2,"Please ensure you are using the correct SOA diagram, this tool does not automatically present the correct SOA… you will need to copy and paste it in yourself."]
[3,"Using the red vertical line provided as an aid, determine the values for current on each intersection point of Voltage and time in the table below."]
[4,"Section 9 and 10 require SOA checks. As you get to each section in the design worksheet you will be redirected back to this page. Use the red and blue lines to determine intersect times."]
[5,"Complete this table first and then click link below…"]
[]
[null,"Time (µs)","Voltage","Current","Power"]
[null,100,{"$f":"'Design worksheet'!$D$26","v":13.2},230,{"$f":"D14*C14","v":3036}]
[null,300,{"$f":"'Design worksheet'!$D$26","v":13.2},130,{"$f":"D15*C15","v":1716}]
[null,400,{"$f":"'Design worksheet'!$D$26","v":13.2},105,1386]
[null,1000,{"$f":"'Design worksheet'!$D$26","v":13.2},60,792]
[null,100000,{"$f":"'Design worksheet'!$D$26","v":13.2},7,92.399999999999991]
[]
[]
["When table complete, click here to return to worksheet"]
[]
[]
[]
["Section 6:","Plot V and I:",{"$f":"'Design worksheet'!D26","v":13.2},{"$f":"'Design worksheet'!D368","v":30.477727145084227}]
[null,7000,"µs"]
["After time entered, click to return to worksheet. Check for Warnings!"]
[]
[]
["Section 12:","Plot Both points below and enter SOA time:"]
[null,"Plot V and I:",{"$f":"'Design worksheet'!D627","v":10.56},{"$f":"'Design worksheet'!D630","v":7.6242303378200109}]
[null,500000,"µs"]
[]
[null,"Plot V and I:",{"$f":"C31","v":10.56},{"$f":"'Design worksheet'!D635","v":2.9256799435299037}]
[null,1000000,"µs"]
[]
["After time entered, click to return to worksheet. Check for Warnings!"]

{"sheet":"Sch & BOM","index":2,"n_rows":61,"n_cols":9,"rows_kept":61,"cut":false,"hidden":false,"merged":[[29,1,29,2],[57,1,57,2],[37,7,38,7],[51,1,51,2],[52,1,52,2],[53,1,53,2],[54,1,54,2],[55,1,55,2],[56,1,56,2],[46,1,46,2],[35,1,35,2],[36,1,36,2],[37,1,37,2],[38,1,38,2],[39,1,39,2],[49,1,49,2],[50,1,50,2],[41,1,41,2],[42,1,42,2],[43,1,43,2],[44,1,44,2],[45,1,45,2],[40,1,40,2],[30,1,30,2],[31,1,31,2],[32,1,32,2],[33,1,33,2],[34,1,34,2],[28,1,28,2],[7,1,7,11],[23,1,23,2],[24,1,24,2],[25,1,25,2],[26,1,26,2],[27,1,27,2],[21,1,21,2],[22,1,22,2]]}
[]
[]
[]
[]
[]
[]
[null,"DISCLAIMER:"]
[null,"This design tool is the property of Analog Devices.  It is a design aid for use with the ADM127x family of hotswap controllers.  It may not be copied, transferred, or used for other purposes without express written approval of Analog Devices Inc. Although ADI has made substantial effort to ensure this spreadsheet software provides accurate results, the complexity, estimates used, component tolerences, PCB thermal variances, and nonlinearities preclude absolute accuracy guarantees.  It is provided \"AS IS\" and all responsibility for the actual design performance and verification is born by the user. All designs should be verified independently and fully tested prior to manufacture. ADI disclaims any liability for damages of any kind resulting from the use of this spreadsheet software. "]
[]
[]
[null,"Specs:",null,"Vmin",{"$f":"'Design worksheet'!D25","v":10.199999999999999},"V"]
[null,null,null,"Vmax",{"$f":"'Design worksheet'!D26","v":13.2},"V"]
[null,null,null,"Vnom",{"$f":"'Design worksheet'!D27","v":12},"V"]
[null,null,null,"Circuit Breaker",{"$f":"'Design worksheet'!D224","v":69.528312375910005},"A"]
[null,null,null,"I powerup",{"$f":"'Design worksheet'!D30","v":0.05},"A"]
[null,null,null,"Rpowerup",{"$f":"'Design worksheet'!D31","v":10000},"Ohm"]
[null,null,null,"Ta Max",{"$f":"'Design worksheet'!D32","v":60},"C"]
[null,null,null,"Cload",{"$f":"'Design worksheet'!D33","v":3000},"uF"]
[]
[null,"Please ensure the design worksheet has been completed, without errors, before using the Bill of Materials listed below!"]
[null,"Schematic shown beside and below BOM for convenience"]
[null,"Ref Des",null,"Value*","Qty","Min. PD (mW)","Grade","Comments"]
[]
[null,"Ruvt",null,{"$f":"'Design worksheet'!D50/1000","v":51.1},{"$f":"IF(D24=\"DNP\",\"\",1)","v":1},{"$f":"25/D24","v":0.48923679060665359},{"$f":"'Design worksheet'!D48","v":"E96 (1%)"}]
[null,"Ruvb",null,{"$f":"'Design worksheet'!D52/1000","v":6.19},{"$f":"IF(D25=\"DNP\",\"\",1)","v":1},{"$f":"2/D25","v":0.32310177705977383},{"$f":"G24","v":"E96 (1%)"}]
[null,"Cuv",null,{"$f":"IF('Design worksheet'!D68 = 0,\"DNP\",'Design worksheet'!D68)","v":100},1,null,"Any","UV filtering capacitor. MLCC. User select, default 100nF. 25V+"]
[null,"Rovt",null,{"$f":"'Design worksheet'!D82/1000","v":51.1},1,{"$f":"25/D27","v":0.48923679060665359},{"$f":"'Design worksheet'!D80","v":"E96 (1%)"}]
[null,"Rovb",null,{"$f":"'Design worksheet'!D84/1000","v":3.32},1,{"$f":"2/D28","v":0.60240963855421692},{"$f":"G27","v":"E96 (1%)"}]
[null,"Cov",null,{"$f":"IF('Design worksheet'!D100 = 0,\"DNP\",'Design worksheet'!D100)","v":10},1,null,"Any","OV filtering capacitor. MLCC. User select, default 100nF.25V+"]
[null,"Cvcap",null,1,1,null,"Any","Datasheet specified"]
[null,"Risett",null,{"$f":"'Design worksheet'!D121/1000","v":100},1,{"$f":"2.8/D31","v":2.7999999999999997E-2},{"$f":"'Design worksheet'!D119","v":"E96 (1%)"}]
[null,"Risetb",null,{"$f":"IF('Design worksheet'!D123/1000 = 1000000,\"DNP\",'Design worksheet'!D123/1000)","v":51.1},1,{"$f":"IF('Design worksheet'!D123/1000 = 1000000,\"\",2.8/D32)","v":5.4794520547945202E-2},{"$f":"G31","v":"E96 (1%)"}]
[null,"Rpsett",null,{"$f":"'Design worksheet'!D318/1000","v":100},1,{"$f":"2.8/D33","v":2.7999999999999997E-2},{"$f":"'Design worksheet'!D316","v":"E96 (1%)"}]
[null,"Rpsetb",null,{"$f":"'Design worksheet'!D320/1000","v":11.5},1,0.2434782608695652,{"$f":"G33","v":"E96 (1%)"}]
[null,"Ristt",null,{"$f":"'Design worksheet'!D572/1000","v":100},1,2.7999999999999997E-2,{"$f":"'Design worksheet'!D570","v":"E96 (1%)"}]
[null,"Ristb",null,{"$f":"IF('Design worksheet'!D575=\"DNP\",\"DNP\",'Design worksheet'!D575/1000)","v":5.62},1,0.49822064056939497,{"$f":"G35","v":"E96 (1%)"}]
[null,"Ctimer",null,{"$f":"TMR","v":10},1,null,{"$f":"'Design worksheet'!D526/100","v":0.1},"MLCC 25V or higher rating"]
[null,"Rvcc",null,0,1,{"$f":"D38*0.000036","v":0},"Any","This RC be used in cases where Vin drops at high load fault conditions. This filter can keep Vcc high. 10 Ohms maximum Rvcc."]
[null,"Cvcc",null,"DNP","",null,"Any"]
[null,"Rs1",null,{"$f":"IF(RSENSE=0,\"NR\",RSENSE)","v":0.5},{"$f":"IF(D40=\"NR\",\"\",1)","v":1},{"$f":"IF(D40=\"NR\",\"\",'Design worksheet'!F181*3000)","v":2248.4143689805705},{"$f":"IF(E40=\"\",\"\",'Design worksheet'!$D$190/100)","v":0.01},{"$f":"IF(E40=\"\",\"\",\"Power already derated by 3. Route sense traces carefully\")","v":"Power already derated by 3. Route sense traces carefully"}]
[null,"Rs2",null,{"$f":"IF('Design worksheet'!D182=0,\"NR\",'Design worksheet'!D182)","v":0.5},{"$f":"IF(D41=\"NR\",\"\",1)","v":1},{"$f":"IF(D41=\"NR\",\"\",'Design worksheet'!F182*3000)","v":2248.4143689805705},{"$f":"IF(E41=\"\",\"\",'Design worksheet'!$D$190/100)","v":0.01},"Power already derated by 3. Route sense traces carefully"]
[null,"Rs3",null,{"$f":"IF('Design worksheet'!D183=0,\"NR\",'Design worksheet'!D183)","v":"NR"},"",{"$f":"IF(D42=\"NR\",\"\",'Design worksheet'!F183*3000)","v":""},{"$f":"IF(E42=\"\",\"\",'Design worksheet'!$D$190/100)","v":""},""]
[null,"Rs4",null,{"$f":"IF('Design worksheet'!D184=0,\"NR\",'Design worksheet'!D184)","v":"NR"},"",{"$f":"IF(D43=\"NR\",\"\",'Design worksheet'!F184*3000)","v":""},{"$f":"IF(E43=\"\",\"\",'Design worksheet'!$D$190/100)","v":""},{"$f":"IF(E43=\"\",\"\",\"Power already derated by 3. Route sense traces carefully\")","v":""}]
[null,"Rsp1,Rsm1",null,{"$f":"IF(D40=\"NR\",\"NR\",RSENSE_AVG)","v":10},{"$f":"IF(D44=\"NR\",\"\",2)","v":2},{"$f":"IF(D44=\"NR\",\"\",100)","v":100},{"$f":"IF(E44=\"\",\"\",\"Any\")","v":"Any"},{"$f":"IF(E44=\"\",\"\",\"Sense voltage averaging resistors for accuracy\")","v":"Sense voltage averaging resistors for accuracy"}]
[null,"Rsp2,Rsm2",null,{"$f":"IF(D41=\"NR\",\"NR\",RSENSE_AVG)","v":10},{"$f":"IF(D45=\"NR\",\"\",2)","v":2},{"$f":"IF(D45=\"NR\",\"\",100)","v":100},{"$f":"IF(E45=\"\",\"\",\"Any\")","v":"Any"},{"$f":"IF(E45=\"\",\"\",\"Sense voltage averaging resistors for accuracy\")","v":"Sense voltage averaging resistors for accuracy"}]
[null,"Rsp3,Rsm3",null,{"$f":"IF(D42=\"NR\",\"NR\",RSENSE_AVG)","v":"NR"},"","","",""]
[null,"Rsp4,Rsm4",null,{"$f":"IF(D43=\"NR\",\"NR\",RSENSE_AVG)","v":"NR"},"","","",""]
[null,"Q1 -",{"$f":"'Design worksheet'!E244","v":3},{"$f":"FET","v":"PSMNR51"},{"$f":"'Design worksheet'!E244","v":3},{"$f":"'Design worksheet'!E250*1000","v":603.9884307363991},null,"Main MOSFET. User must ensure Rthja chosen (Layout/airflow etc)"]
[null,"Rg1 - ",{"$f":"'Design worksheet'!E244","v":3},10,{"$f":"E48","v":3},100,"Any","Required to prevent gate oscillations when using multiple FETs."]
[null,"Rgate",null,0,1,100,"Any","Must widthstand pulse of 2A for 20µs"]
[null,"Cgate",null,{"$f":"CGATE","v":22},1,null,{"$f":"'Design worksheet'!D404/100","v":0.1},"MLCC 50V or higher rating"]
[null,"Rpgt",null,{"$f":"'Design worksheet'!D722/1000","v":51.1},1,0.48923679060665359,{"$f":"'Design worksheet'!D316","v":"E96 (1%)"}]
[null,"Rpgb",null,{"$f":"'Design worksheet'!D724/1000","v":5.49},1,{"$f":"2/D53","v":0.36429872495446264},{"$f":"G52","v":"E96 (1%)"}]
[null,"Rvout",null,1,1,1,"Any","Limits currents from output transient voltages on VOUT pin."]
[null,"Rgnd",null,0,1,100,"Any","Must widthstand pulse of 2A for 20µs"]
[null,"D1",null,"TVS",1,{"$f":"IF(I56<25,\"600W\",IF(I56<120,\"1500W\",\"3000W\"))","v":"1500W"},{"$f":"IF(I56<25,\"SMB\",IF(I56<120,\"SMC\",\"SMD\"))","v":"SMC"},"TVS should be chosen to prevent Vin transients from exceeding 25V",{"$f":"'Design worksheet'!D225","v":73.048312375910001}]
[null,"D2",null,"Diode",1,null,null,"Output diode is sometimes used to clamp negative Vout transients. "]
[]
[null,"*DNP: ","Place symbol and footprint, but do not populate component on PCB. Component may be required for design adjustments"]
[null,"*NR:","Component not required for this design. No Symbol or footprint required."]
[null,"Schematic shows a maximum of 4 sense resistors to match tool limitations… if more are required there is no part limitation."]

{"sheet":"Startup nominal","index":3,"n_rows":115,"n_cols":15,"rows_kept":115,"cut":false,"hidden":true,"merged":[]}
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[]
[]
[]
[]
[]
[]
[null,"tstep",{"$f":"C10/(C9-1)","v":0.1199030303030303},"ms",null,"Pset",{"$f":"'Design worksheet'!D350","v":178.22421524663676},"W"]
[null,"#steps",100,null,null,"istart icb",{"$f":"'Design worksheet'!D613","v":7.9732777882976702},"A","ICBOS",{"$f":"(specs!D23/'Design worksheet'!D189)","v":3.52},"A"]
[null,"time",{"$f":"'Design worksheet'!D450","v":11.8704},"ms",null,"ICB clamp",{"$f":"'Design worksheet'!D470","v":8},"A"]
[null,"Vin",{"$f":"'Design worksheet'!D27","v":12},null,null,"ICB full",{"$f":"'Design worksheet'!D224","v":69.528312375910005},"A"]
[null,"vstep",{"$f":"C11/(C9-1)","v":0.12121212121212122},"V",null,"inrush",{"$f":"'Design worksheet'!D455","v":3.0840737403962799},"A"]
[]
[]
[null,"t","vout","PSET-I ideal","PSET ICB","ISTART ICB","inrush"]
[1,9.9999999999999995E-7,9.9999999999999995E-7,{"$f":"($G$8/($C$11-C16)) - $J$9","v":11.332019174887995},{"$f":"IF(D16>$G$10,IF(D16<$G$11,D16,$G$11),$G$10)","v":11.332019174887995},{"$f":"$G$9","v":7.9732777882976702},0]
[2,{"$f":"B16+$C$8","v":0.1199040303030303},{"$f":"C16+$C$12","v":0.12121312121212122},{"$f":"($G$8/($C$11-C17)) - $J$9","v":11.483570403716419},{"$f":"IF(D17>$G$10,IF(D17<$G$11,D17,$G$11),$G$10)","v":11.483570403716419},{"$f":"$G$9","v":7.9732777882976702},{"$f":"$G$12","v":3.0840737403962799}]
[3,{"$f":"B17+$C$8","v":0.23980706060606061},{"$f":"C17+$C$12","v":0.24242524242424243},11.638246400415321,11.638246400415321,7.9732777882976702,{"$f":"$G$12","v":3.0840737403962799}]
[4,{"$f":"B18+$C$8","v":0.3597100909090909},0.36363736363636368,11.796144813989043,11.796144813989043,7.9732777882976702,3.0840737403962799]
[5,0.47961312121212119,0.48484948484848489,11.95736740497931,11.95736740497931,7.9732777882976702,3.0840737403962799]
[6,0.59951615151515147,0.60606160606060611,12.122020264164048,12.122020264164048,7.9732777882976702,3.0840737403962799]
[7,0.71941918181818176,0.72727372727272732,12.290214045365799,12.290214045365799,7.9732777882976702,3.0840737403962799]
[8,0.83932221212121205,0.84848584848484854,12.462064213443295,12.462064213443295,7.9732777882976702,3.0840737403962799]
[9,0.95922524242424234,0.96969796969696975,12.637691308634139,12.637691308634139,7.9732777882976702,3.0840737403962799]
[10,1.0791282727272726,1.090910090909091,12.817221228520317,12.817221228520317,7.9732777882976702,3.0840737403962799]
[11,1.199031303030303,1.2121222121212121,13.000785529002627,13.000785529002627,7.9732777882976702,3.0840737403962799]
[12,1.3189343333333334,1.3333343333333332,13.188521745796109,13.188521745796109,7.9732777882976702,3.0840737403962799]
[13,1.4388373636363638,1.4545464545454543,13.380573738097546,13.380573738097546,7.9732777882976702,3.0840737403962799]
[14,1.5587403939393942,1.5757585757575754,13.577092056229798,13.577092056229798,7.9732777882976702,3.0840737403962799]
[15,1.6786434242424246,1.6969706969696965,13.778234335237489,13.778234335237489,7.9732777882976702,3.0840737403962799]
[16,1.798546454545455,1.8181828181818176,13.984165716596671,13.984165716596671,7.9732777882976702,3.0840737403962799]
[17,1.9184494848484854,1.9393949393939387,14.195059300409547,14.195059300409547,7.9732777882976702,3.0840737403962799]
[18,2.0383525151515158,2.0606070606060598,14.41109663068659,14.41109663068659,7.9732777882976702,3.0840737403962799]
[19,2.158255545454546,2.1818191818181809,14.632468216575507,14.632468216575507,7.9732777882976702,3.0840737403962799]
[20,2.2781585757575762,2.303031303030302,14.859374092682369,14.859374092682369,7.9732777882976702,3.0840737403962799]
[21,2.3980616060606064,2.4242434242424231,15.092024421948793,15.092024421948793,7.9732777882976702,3.0840737403962799]
[22,2.5179646363636365,2.5454555454545442,15.330640144904287,15.330640144904287,7.9732777882976702,3.0840737403962799]
[23,2.6378676666666667,2.6666676666666653,15.575453679509689,15.575453679509689,7.9732777882976702,3.0840737403962799]
[24,2.7577706969696969,2.7878797878787864,15.826709676251419,15.826709676251419,7.9732777882976702,3.0840737403962799]
[25,2.8776737272727271,2.9090919090909075,16.084665833643282,16.084665833643282,7.9732777882976702,3.0840737403962799]
[26,2.9975767575757573,3.0303040303030286,16.349593779850021,16.349593779850021,7.9732777882976702,3.0840737403962799]
[27,3.1174797878787874,3.1515161515151497,16.621780026773127,16.621780026773127,7.9732777882976702,3.0840737403962799]
[28,3.2373828181818176,3.2727282727272708,16.901527003643761,16.901527003643761,7.9732777882976702,3.0840737403962799]
[29,3.3572858484848478,3.393940393939392,17.189154177961619,17.189154177961619,7.9732777882976702,3.0840737403962799]
[30,3.477188878787878,3.5151525151515131,17.484999272514241,17.484999272514241,7.9732777882976702,3.0840737403962799]
[31,3.5970919090909081,3.6363646363636342,17.789419588224124,17.789419588224124,7.9732777882976702,3.0840737403962799]
[32,3.7169949393939383,3.7575767575757553,18.10279344371763,18.10279344371763,7.9732777882976702,3.0840737403962799]
[33,3.8368979696969685,3.8787888787878764,18.425521743810556,18.425521743810556,7.9732777882976702,3.0840737403962799]
[34,3.9568009999999987,4.0000009999999975,18.758029690583299,18.758029690583299,7.9732777882976702,3.0840737403962799]
[35,4.0767040303030289,4.1212131212121186,19.100768652401449,19.100768652401449,7.9732777882976702,3.0840737403962799]
[36,4.196607060606059,4.2424252424242397,19.454218208157076,19.454218208157076,7.9732777882976702,3.0840737403962799]
[37,4.3165100909090892,4.3636373636363608,19.818888386199713,19.818888386199713,7.9732777882976702,3.0840737403962799]
[38,4.4364131212121194,4.4848494848484819,20.195322119938069,20.195322119938069,7.9732777882976702,3.0840737403962799]
[39,4.5563161515151496,4.606061606060603,20.584097944976406,20.584097944976406,7.9732777882976702,3.0840737403962799]
[40,4.6762191818181797,4.7272737272727241,20.985832965964576,20.985832965964576,7.9732777882976702,3.0840737403962799]
[41,4.7961222121212099,4.8484858484848452,21.401186125161665,21.401186125161665,7.9732777882976702,3.0840737403962799]
[42,4.9160252424242401,4.9696979696969663,21.83086180912694,21.83086180912694,7.9732777882976702,3.0840737403962799]
[43,5.0359282727272703,5.0909100909090874,22.275613835062572,22.275613835062572,7.9732777882976702,3.0840737403962799]
[44,5.1558313030303005,5.2121222121212085,22.736249864264533,22.736249864264533,7.9732777882976702,3.0840737403962799]
[45,5.2757343333333306,5.3333343333333296,23.213636297040946,23.213636297040946,7.9732777882976702,3.0840737403962799]
[46,5.3956373636363608,5.4545464545454507,23.708703711510335,23.708703711510335,7.9732777882976702,3.0840737403962799]
[47,5.515540393939391,5.5757585757575718,24.222452918112999,24.222452918112999,7.9732777882976702,3.0840737403962799]
[48,5.6354434242424212,5.6969706969696929,24.755961712719934,24.755961712719934,7.9732777882976702,3.0840737403962799]
[49,5.7553464545454514,5.818182818181814,25.310392424225292,25.310392424225292,7.9732777882976702,3.0840737403962799]
[50,5.8752494848484815,5.9393949393939351,25.887000367850106,25.887000367850106,7.9732777882976702,3.0840737403962799]
[51,5.9951525151515117,6.0606070606060563,26.487143333544587,26.487143333544587,7.9732777882976702,3.0840737403962799]
[52,6.1150555454545419,6.1818191818181774,27.112292260440903,27.112292260440903,7.9732777882976702,3.0840737403962799]
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[null,"V","CURRENT",null,null,"FULL DS"]
[null,"T","CURRENT",null,null,"FULL DS"]
[null,"SD","CURRENT",null,null,"FULL DS"]
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[null,"Spec","Min","Typ","Max","Min","Typ","Max"]
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[null,"UV threshold",{"$f":"IF($B$1=$R$6,F10,IF($B$1=$R$7,I10,IF($B$1=$R$8,K10,IF($B$1=$R$9,M10,Q10))))","v":0.99},{"$f":"IF(G10=\"\",\"\",G10)","v":1},{"$f":"IF($B$1=$R$6,H10,IF($B$1=$R$7,J10,IF($B$1=$R$8,L10,IF($B$1=$R$9,N10,Q10))))","v":1.01},0.99,1,1.01,"V"]
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[null,"UV hyst",{"$f":"IF($B$1=$R$6,F12,IF($B$1=$R$7,I12,IF($B$1=$R$8,K12,IF($B$1=$R$9,M12,Q12))))","v":40},60,{"$f":"IF($B$1=$R$6,H12,IF($B$1=$R$7,J12,IF($B$1=$R$8,L12,IF($B$1=$R$9,N12,Q12))))","v":75},40,60,75,"mV"]
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[null,"SS current",{"$f":"F25","v":8},{"$f":"G25","v":10},12,8,10,12,"uA"]
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[null,"P input current",null,"",{"$f":"H33","v":50},null,null,50,"nA"]
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{"sheet":"Revision History","index":7,"n_rows":23,"n_cols":5,"rows_kept":23,"cut":false,"hidden":true,"merged":[]}
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[]
[]
[]
[]
[null,null,"Rev","Comments","Date"]
[]
[null,null,1,"Initial beta tool - convert from ADM1275/6","2013-09-30"]
[null,null,1.1000000000000001,"blank 20mV iset and add tolerance to istart. Add warning to clamp ISTART","2014-04-30"]
[null,null,2,"Web release. Reconfigured all resistor calculation to auto populate. Tool tidy up. Add comments. Add error flags. Optimized for dvdt only. Add BOM and Sch. Add PLIM tol,","2014-08-29"]
[null,null,2.1,"gcm: added macros, toolOpen, toolClose, standard locking, row show/hide, etc."]
[null,null,2.2000000000000002,"cell D312 error. 18 to be D25. Also add overide for R2 on strings for checking existing designs. Corrrected istart clamp tolerance issue and roverride","2014-01-22"]
[null,null,2.5,"Corrrected istart clamp tolerance issue and roverride. Fixed bugs on timer / SOA when PLIM limits reached. Added VCAP current strings","2015-01-27"]
[null,null,2.6,"add show hide macro","2015-02-16"]
[null,null,2.7,"improved wanrings and error handling for PLIM and ISTART","2015-02-19"]
[null,null,2.8,"minor tweaks to istart/pset. Include startup diagrams","2015-02-20"]
[null,null,2.9,"Clean out all FC macros etc.Create hide/show RC macros","2015-02-24"]
[null,null,2.95,"add tolerance to plots","2015-02-25"]
[null,null,2.96,"clean up istart and add offsets. Clean up inrush calc and remove sim data. Add tolerancing options from 4sig and reduced temp","2015-03-11"]
[null,null,2.97,"improve startup SOA to reflect more accurate profiles (currents not energy). Add Roverride warnings. Correct startup plot x axis timebase. ","2015-04-27"]
[null,null,2.98,"powerup soa… add % Vds input.","2015-05-05"]
[null,null,2.99,"editable SOA times","2015-11-10"]
[null,null,3,"add more details around FET transconductance and starup in to short SOA","2019-11-04"]

{"sheet":"Variables","index":8,"n_rows":6,"n_cols":2,"rows_kept":6,"cut":false,"hidden":true,"merged":[]}
[]
["revtool",{"$f":"MAX('Revision History'!C8:C54)","v":3}]
["revname","ADM1281 Hot Swap Designer"]
["revlink",0]
["revtext","ADM1281"]
["revDB",0]