UCC28515
Overview
The UCC28510 series of combination PFC/PWM controllers provide complete control functionality for any off-line power system requiring compliance with the IEC1000-3-2 harmonic reduction requirements. By combining the control and drive signals for the PFC and the PWM stages into a single device, significant performance and cost benefits are gained.
- Provides Control of PFC and PWM Power Stages In One Device
- Leading-Edge PFC, Trailing-Edge PWM Modulation for Reduced Ripple
- Built-In Sequencing of PFC and PWM Turn-On
- 2-A Source and 3-A Sink Gate Drive for Both PFC and PWM Stages
- Typical 16-ns Rise Time and 7-ns Fall Time into 1-nF Loads PFC Features - Average-Current-Mode Control for Continuous Conduction Mode Operation - Highly-Linear Multiplier for Near-Unity Power Factor - Input Voltage Feedforward Implementation - Improved Load Transient Response - Accurate Power Limiting - Zero Power Detect PWM Features - Peak-Current-Mode Control Operation - 1:1 or 1:2 PFC:PWM Frequency Options - Programmable maximum duty cycle - Programmable Soft-Start - Two Hysteresis Options for Differing Hold-Up Time Requirements
