Active Clamp Synchronous Forward Controller -LT3753

• Author:lulu
• Source:www.ic-stocks.com
• Release on:2017-08-09

FEATURES

 Input Voltage Range: 8.5V to 100V 

 Programmable Volt-Second Clamp 

 High Efficiency Control: Active Clamp, Synchronous Rectification, Programmable Delays 

 Short-Circuit (Hiccup Mode) Overcurrent Protection 

 Programmable Soft-Start/Stop 

 Programmable OVLO and UVLO with Hysteresis 

 Programmable Frequency (100kHz to 500kHz) 

 Synchronizable to an External Clock

APPLICATIONS

 Industrial, Automotive and Military Systems 

 48V Telecommunication Isolated Power Supplies

DESCRIPTION

The LT®3753 is a current mode PWM controller optimized for an active clamp forward converter topology, allowing up to 100V input operation

A programmable volt-second clamp allows primary switch duty cycles above 50% for high switch, transformer and rectifier utilization. Active clamp control reduces switch voltage stress and increases efficiency. A synchronous output is available for controlling secondary side synchronous rectification.

The LT3753 is available in a 38-lead plastic TSSOP package with missing pins for high voltage spacings.

TYPICAL APPLICATION

36V to 72V, 5V/20A Active Clamp Isolated Forward Converter

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