Update: 29 September, 2023
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, fixed-frequency, 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. The UCC2891/3 includes a 110-V start-up regulator for initial start-up and to provide keep-alive power during stand-by. Additional features include an internal programmable slope compensation circuit, precise DMAX limit, and a single resistor programmable synchronizable oscillator.
File format: PDF
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MD5 Checksum: 7218F216213A4805BBD1F8805004264A
Publication date: 09 May, 2012
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PDF Link: TEXAS INSTRUMENTS UCC2891 handbook PDF