UCC3895 Overview
The UCC3895 is a phase-shift PWM controller that implements control of a full-bridge power stage by phase shifting the switching of one half-bridge with respect to the other. The device allows constant frequency pulse-width modulation in conjunction with resonant zero-voltage switching to provide high efficiency at high frequencies. The part is used either as a voltage-mode or current-mode controller.
UCC3895 Key Features
- 1 Programmable-output turnon delay
- Adaptive delay set
- Bidirectional oscillator synchronization
- Voltage-mode, peak current-mode, or average
- Programmable soft start, soft stop, and chip
- 0% to 100% duty-cycle control
- 7-MHz error amplifier
- Operation to 1 MHz
- Typical 5-mA operating current at 500 kHz
- Very low 150-μA current during UVLO
