UCC1895 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. It allows constant frequency pulse-width modulation in conjunction with resonant zero-voltage switching to provide high efficiency at high frequencies. The part can be used either as a voltage mode or current mode controller.
UCC1895 Key Features
- Programmable Output Turn-on Delay
- Adaptive Delay Set
- Bidirectional Oscillator Synchronization
- Capability for Voltage Mode or Current Mode Control
- Programmable Soft Start/Soft Stop and Chip Disable via a Single Pin
- 0% to 100% Duty Cycle Control
- 7MHz Error Amplifier
- Operation to 1MHz
- Low Active Current Consumption (5mA Typical @ 500kHz)
- Very Low Current Consumption During Undervoltage Lock-out (150µA typical)
