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UCC2892 Datasheet ACtive Clamp Pwm Controller

Manufacturer: Texas Instruments

Overview: UCC2891, UCC2892 UCC2893, UCC2894 ą SLUS542F − OCTOBER 2003 − REVISED JULY 2009 CURRENTĆMODE ACTIVE CLAMP PWM.

This datasheet includes multiple variants, all published together in a single manufacturer document.

General Description

D Low Output Jitter D Soft−Stop Shutdown of MAIN and AUX D Ideal for Active Clamp/Reset Forward, Flyback Converters D Provides plementary Auxiliary Driver with Programmable Deadtime (Turn-On Delay) between AUX and MAIN Switches D Peak Current-Mode Control with Cycle-by-Cycle Current Limiting The UCC2891/2/3/4 family of PWM controllers is designed to simplify implementation of the various active clamp/reset switching power topologies.

The UCC289x is a peak current-mode, fixedfrequency, high-performance pulse width modulator.

It includes the logic and the drive capability for the auxiliary switch with a simple method of programming the critical delays for proper active clamp operation.

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