UCC2897A Description
The UCC2897A PWM controller simplifies implementation of the various active clamp or reset and synchronous rectifier switching power topologies. The UCC2897A is a peak current-mode fixedfrequency high-performance pulse-width modulator. The controller includes the logic and the drive capability for the P-channel auxiliary switch along with a simple method of programming the critical delays for proper active-clamp...
UCC2897A Key Features
- 1 Low-output jitter
- Soft-stop shutdown of MAIN and AUX
- 110-V input startup function
- Ideal for active-clamp, reset-forward, flyback and
- Peak current-mode control with 0.5-V cycle-bycycle current limiting
- TrueDrive™ 2-A Sink, 2-A source outputs
- Trimmed internal-bandgap reference for accurate line UV and line OV threshold
- Programmable slope pensation
- High-performance 1-MHz synchronizable oscillator with internal timing capacitor
- Precise programmable maximum duty cycle
UCC2897A Applications
- High-efficiency DC-to-DC power supplies