LTM4630A

RECOMMENDED FOR NEW DESIGNS

Dual 18A or Single 36A DC/DC μModule Regulator

Part Models: 4
1ku List Price: Starting From $42.73

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Part Details

Dual 18A or Single 36A Output
Input Voltage Range: 4.5V to 18V (after date code 1720*)
Output Voltage Range: 0.6V to 8V (after date code 1720*)
±1.5% Maximum Total DC Output Error Over Line, Load and Temperature
Higher Light Load Efficiency and Wider V_OUT Range Than LTM4630
Differential Remote Sense Amplifier
Current Mode Control/Fast Transient Response
Multiphase Parallel Current Sharing Up to 144A
Internal Temperature Monitor
Pin Compatible with the LTM4620A (Dual 13A, Single 26A) and LTM4630 (Dual 18A, Single 36A)
Adjustable Switching Frequency or Synchronization
Overcurrent Foldback Protection
Selectable Burst Mode^®Operation, Pulse Skipping Mode Operation
Soft-Start/Voltage Tracking
Output Overvoltage Protection
16mm × 16mm × 4.41mm LGA and 16mm × 16mm × 5.01mm BGA Packages

The LTM4630A is a dual 18A or single 36A output switching mode step-down DC/DC µModule^® (micromodule) regulator with wider V_OUT range and higher efficiency than LTM4630. Included in the package are the switching controllers, power FETs, inductors and all supporting components. Operating from an input voltage range of 4.5V to 18V, the LTM4630A supports two outputs each with an output voltage range of 0.6V to 8V, each set by a single external resistor. Its high efficiency design delivers up to 18A continuous current for each output. Only a few input and output capacitors are needed. The LTM4630A is pin compatible with the LTM4620 and LTM4620A (dual 13A, single 26A) and the LTM4630 (dual 18A, single 36A).

The device supports frequency synchronization, multiphase operation, Burst Mode operation and output voltage tracking for supply rail sequencing and has an onboard temperature diode for device temperature monitoring. High switching frequency and a current mode architecture enable a very fast transient response to line and load changes without sacrificing stability.

Fault protection features include overvoltage and overcurrent protection. The LTM4630A is offered in 16mm × 16mm × 4.41mm LGA and 16mm × 16mm × 5.01mm BGA packages.

*Maximum V_IN = 15V and V_OUT = 5.3V with date code before 1720


	Features	V_OUT
LTM4630		0.6V to 1.8V
LTM4630-1	0.8% DC and 3% Transient Accuracy	0.6V to 1.8V
LTM4630A	Higher Light Load Efficiency	0.6V to 5.3V

Applications

Telecom and Networking Equipment
Storage and ATCA Cards
Industrial Equipment

Part Models: 4
1ku List Price: Starting From $42.73

Documentation

Data Sheet 1

LTM4630A: Dual 18A or Single 36A DC/DC μModule (Power Module) Regulator Data Sheet 02/01/2017

User Guide 1

DC2152A - Demo Manual 01/16/2017

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LTM4630AEV#PBF	144-Lead LGA (16mm x 16mm x 4.41mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTM4630AEY#PBF	144-Lead BGA (16mm x 16mm x 5.01mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTM4630AIV#PBF	144-Lead LGA (16mm x 16mm x 4.41mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTM4630AIY#PBF	144-Lead BGA (16mm x 16mm x 5.01mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Jul 28, 2021 - 20_0245 Notification of Wafer Fab Location Change for 0.6µm BICMOS Process Devices from ADI Milpitas (Hillview) to Vanguard Int. (Taiwan)
		PCN20_0245_Form Material_Report Delta Qualification Matrix Other Qualification Results Summary
LTM4630AEV#PBF	PRODUCTION
LTM4630AEY#PBF	PRODUCTION
LTM4630AIV#PBF	PRODUCTION
LTM4630AIY#PBF	PRODUCTION
Jul 21, 2021 - 21_0159 Ink Mark to Laser Mark Conversion for µModule
		PCN21_0159_Form Material_Report Delta Qualification Matrix
LTM4630AEV#PBF	PRODUCTION
LTM4630AEY#PBF	PRODUCTION
LTM4630AIV#PBF	PRODUCTION
LTM4630AIY#PBF	PRODUCTION
Feb 28, 2020 - 20_0123 Micro-Module, Test Site Transfer from Analog Devices Singapore to Analog Devices Penang, Malaysia
		PCN20_0123_Form Material_Report Test Correlation Report Other Qualification Results Summary
LTM4630AEV#PBF	PRODUCTION
LTM4630AEY#PBF	PRODUCTION
LTM4630AIV#PBF	PRODUCTION
LTM4630AIY#PBF	PRODUCTION
Feb 5, 2020 - 20_0127 Supplier Material Change for µModule
		PCN20_0127_Form Material_Report Qualification Results Summary
LTM4630AEV#PBF	PRODUCTION
LTM4630AEY#PBF	PRODUCTION
LTM4630AIV#PBF	PRODUCTION
LTM4630AIY#PBF	PRODUCTION
Jul 25, 2019 - 19_0115 Notification of Additional Assembly Location, ASE Korea for LTM4630 and LTM4630A
		PCN19_0115_Form Material_Report Other Qualification Results Summary
LTM4630AEV#PBF	PRODUCTION
LTM4630AEY#PBF	PRODUCTION
LTM4630AIV#PBF	PRODUCTION
LTM4630AIY#PBF	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Hardware Ecosystem

Parts	Product Life Cycle	Description
µModule Buck Regulators 1
LTM4650	RECOMMENDED FOR NEW DESIGNS	Dual 25A or Single 50A DC/DC μModule Regulator
Digital Power System Managers 1
LTC2975	RECOMMENDED FOR NEW DESIGNS	4-Channel PMBus Power System Manager Featuring Accurate Input Current and Energy Measurement

Parts	Product Life Cycle	Description
LTM4630	RECOMMENDED FOR NEW DESIGNS	Dual 18A or Single 36A DC/DC μModule (Power Module) Regulator
LTM4630-1	RECOMMENDED FOR NEW DESIGNS	Dual 18A or Single 36A μModule (Power Module) Regulator with 0.8% DC and 3% Transient Accuracy

Tools & Simulations

LTspice 2

Models for the following parts are available in LTspice:

LTM4630
LTM4630-1
LTM4630A

LTpowerCAD 1

LTM4630A Project - High Efficiency Dual 18A Step-Down uModule Regulator (6-15V to 3.3 V & 5.0V @ 18A)

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

LTpowerCAD^® is a power supply design program which selects power stage components, provides detailed power efficiency, shows quick loop Bode plot stability and load transient analysis, and can export to LTspice for simulation.

Evaluation Kits

LTM4630A Demo Board | Dual 18A or Single 36A μModule Regulator

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Product Details

Demonstration circuit 2268A-F is a high efficiency, high density, dual 8A, switch mode step-down power supply on a compact 1.5' × 1.2' PCB. It features the LTM4630A μModule^® regulator. The input voltage is from 4.5V to 15V. The output voltage is programmable from 0.6V to 5.3V. DC2268A-F can deliver up to 18A maximum in each channel. As explained in the data sheet, output current derating is necessary for certain V_IN, V_OUT, and thermal conditions. The board operates in continuous conduction mode in heavy load conditions. For high efficiency at low load currents, the resistor jumper (R1/R2) selects pulse-skipping mode for noise sensitive applications or Burst-Mode^® in less noise sensitive applications. Two outputs can be connected in parallel for a single 36A output solution with optional jumper resistors. The board allows the user to program how its output ramps up and down through the TRACK/SS pin. Remote output voltage sensing is available for improved output voltage regulation at the load point. An optional input inductor L1 reduces the EMI noise for noise sensitive applications. DC2268A can be easily inserted to an edge connector for testing and debugging. These features and the availability of the LTM4630A in a compact 16mm × 16mm × 4.41mm LGA package make it ideal for use in many high-density point-of-load regulation applications. The LTM4630A data sheet must be read in conjunction with this demo manual for working on or modifying the DC2268A-F.

Resources

DC2268A-F Design Files
9.18 M

DC2268A-F Demo Manual (Rev.0)
826.78 K

DC2268A-F Schematic
65.38 K

LTM4630A Demo Board | Dual 18A Step-Down uModule Regulator, 6V ≤ VIN ≤ 15V, VOUT1/VOUT2 = 3.3V/5V @ 18A

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Product Details

Demonstration circuit 2152A features the LTM4630AEV high efficiency, high density, dual 18A, switch mode step-down µModule regulator. The input voltage is from 6V to 15V, and the output voltages are set at 3.3V and 5V, but are programmable from 0.6V to 5.3V. The DC2152A can deliver up to 18A maximum from each channel. The two outputs can be connected in parallel for a single 36A output solution with optional jumper resistors. ±3% transient accuracy can be achieved with a 25% load step.

Output current derating is necessary for certain V_IN, V_OUT, and thermal conditions. Its many features and its compact 16mm × 16mm × 4.41mm LGA package make the LTM4630AEV ideal for use in many high-density point-of-load regulation applications.

Resources

DC2152A - Design Files
1.00M

DC2152A - Demo Manual
1.00M

DC2152A - Schematic
66.00K

Reference Designs

View Detailed Reference Design

Features and Benefits

Analog Devices has worked closely with Intel PSG to develop verified power solutions that optimize cost, size and efficiency in high performance applications.
The validated power solutions include uModules power products that address time and space constraints while delivering high efficiency, reliability, and low noise.
The actual power tree represents the best solution at time of design.
A recommended power tree has also been included to present the ideal solution at time of Stratix 10 GX PCIe development kit release. An updated alternate version of the power tree represents the latest solutions available from Analog Devices. For many applications, an intermediate rail is not ideal, so recommendations an alternate power tree that allow for direct power conversion from 12V input is provided below.

Part Used

View Detailed Reference Design

Features and Benefits

Analog Devices has worked closely with Intel PSG to develop verified power solutions that optimize cost, size and efficiency in high performance applications.
The validated power solutions include uModules power products that address time and space constraints while delivering high efficiency, reliability, and low noise.
The actual power tree represents the best solution at time of design.
A recommended power tree has also been included to present the ideal solution at time of Stratix 10 GX SI development kit release. An updated alternate version of the power tree represents the latest solutions available from Analog Devices. For many applications, an intermediate rail is not ideal, so recommendations for an alternate power tree that allows for direct power conversion from 12V input is provided below.