LTC3766

RECOMMENDED FOR NEW DESIGNS

High Efficiency, Secondary-Side Synchronous Forward Controller

Data Sheet Product Selection Table
Part Models
16
1ku List Price
Starting From $4.63
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Part Details

  • Direct Flux Limit™ Guarantees No Saturation
  • Fast and Accurate Average Current Limit
  • Clean Start-Up Into Pre-Biased Output
  • Secondary-Side Control for Fast Transient Response
  • Simple, Self-Starting Architecture
  • Synchronous MOSFET Reverse Current Limit
  • PolyPhase® Operation Eases High-Power Design
  • True Remote Sense Differential Amplifier
  • Remote Sense Reverse Protection
  • High Voltage Linear Regulator Controller
  • Internal LDO Powers Gate Drive from VOUT
  • Overtemperature/Overvoltage Protection
  • Low Profile 4mm × 5mm QFN and Narrow 28-Lead SSOP Packages
LTC3766
High Efficiency, Secondary-Side Synchronous Forward Controller
36V-72V to 5V/15A Active Clamp Isolated Forward Converter Product Package 1 Product Package 2
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 5

Data Sheet

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

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Hardware Ecosystem

Parts Product Life Cycle Description
Analog Temperature Sensors 1
LTC2997
PRODUCTION Remote/Internal Temperature Sensor
Digital Temperature Sensors 1
LTC2991
RECOMMENDED FOR NEW DESIGNS Octal I2C Voltage, Current, and Temperature Monitor
Flyback, Forward, and Isolated Controller 1
LTC3765
RECOMMENDED FOR NEW DESIGNS Active Clamp Forward Controller and Gate Driver
Multichannel Voltage Output D/A Converters 1
LTC2654
PRODUCTION Quad 16-/12-Bit Rail-to-Rail DACs with 10ppm/°C Max Reference
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Tools & Simulations

LTspice 6

Models for the following parts are available in LTspice:

  • LTC3766
LTspice

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.

Evaluation Kits

eval board
schematic 1
DC2199B-C

LTC3765EMSE/LTC3766EGN Isolated Demo Board | Forward Converter with Sync Rectification, 36V ≤ VIN ≤ 60V; VOUT = 56V @ 5.4A

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Product Details

Demonstration circuit 2199B-C is a 300W isolated forward converter with synchronous rectification featuring the LTC3765/LTC3766 chip-set. It produces a regulated 56V, 5.4A output from an input voltage range of 36V to 60V.



eval board
schematic 2
DC2199A-B

LTC3765EMSE/LTC3766EGN Isolated Demo Board | Forward Converter with Sync Rectification, 36V ≤ VIN ≤ 60V; VOUT = 24V @ 15A

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Product Details

Demonstration circuit 2199A-B is a 360W isolated forward converter with synchronous rectification featuring the LTC3765/LTC3766 chip-set. It produces a regulated 24V, 15A output from an input voltage range of 36V to 60V.



eval board
schematic 3
schematic 4
schematic 5
schematic 6
DC1739B-C

LTC3765EMSE/LTC3766EGN Isolated Demo Board | Forward Converter, 9V ≤ VIN ≤ 36V; VOUT = 12V @ 10A

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Product Details

Demonstration circuit 1739B-C is a 120W isolated forward converter with synchronous rectification featuring the LTC3765/LTC3766 chip set. This circuit demonstrates the high level of performance, efficiency, and small solution size attainable using this chipset in an active-clamp-reset forward converter power supply. It operates at 240kHz and produces a regulated 12V/10A output from an input voltage range of 9V to 36V. It has an eighth-brick footprint area.

eval board
schematic 7
DC1739A-B

LTC3765EMSE/LTC3766EGN Isolated Demo Board | Forward Converter, 18V ≤ VIN ≤ 72V; VOUT = 12V @ 12.5A

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Product Details

Demonstration circuit 1739A-B is a 150W isolated forward converter with synchronous rectification featuring the LTC3765/LTC3766. This circuit demonstrates a high level of performance, efficiency, and small solution size attainable using these parts in an active-clamp-reset forward converter power supply. It operates at 240kHz and produces a regulated 12V, 12.5A output from an input voltage range of 18V to 72V, making it well suited for telecom, industrial, and other applications.

eval board
schematic 8
DC2199A-A

LTC3765EMSE/LTC3766EGN Isolated Demo Board | Forward Converter, 36V ≤ VIN ≤ 60V; VOUT = 12V @ 30A

Buy Now View Details

Product Details

Demonstration circuit 2199A-A is a 360W isolated forward converter with synchronous rectification featuring the LTC3765/LTC3766. It produces a regulated 12V, 30A output from an input voltage range of 36V to 60V.
DC2199B-C
LTC3765EMSE/LTC3766EGN Isolated Demo Board | Forward Converter with Sync Rectification, 36V ≤ VIN ≤ 60V; VOUT = 56V @ 5.4A
DC2199B-C - Schematic
DC2199A-B
LTC3765EMSE/LTC3766EGN Isolated Demo Board | Forward Converter with Sync Rectification, 36V ≤ VIN ≤ 60V; VOUT = 24V @ 15A
DC2199A-B - Schematic
DC1739B-C
LTC3765EMSE/LTC3766EGN Isolated Demo Board | Forward Converter, 9V ≤ VIN ≤ 36V; VOUT = 12V @ 10A
DC1739B-C Evaluation Board DC1739B-C Evaluation Board - Top View DC1739B-C Evaluation Board - Bottom View DC1739B-C - Schematic
DC1739A-B
LTC3765EMSE/LTC3766EGN Isolated Demo Board | Forward Converter, 18V ≤ VIN ≤ 72V; VOUT = 12V @ 12.5A
DC1739A-B - Schematic
DC2199A-A
LTC3765EMSE/LTC3766EGN Isolated Demo Board | Forward Converter, 36V ≤ VIN ≤ 60V; VOUT = 12V @ 30A
DC2199A - Shematic

Latest Discussions

2 Years Ago
DC2199B-C reference design
3 Years Ago
RE: LTC3766 Issue
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