Texas Instruments High-Performance Analog PFC (Power Factor Correction) UCC28510DW

The UCC28510DW is a combination PFC (Power Factor Correction) and PWM (Pulse Width Modulation) controller designed for off-line power systems that require compliance with IEC1000-3-2 harmonic reduction standards. It integrates control and drive signals for both PFC and PWM stages into a single device, offering benefits in performance and cost efficiency. This device features average-current-mode control for the PFC stage, which enhances load transient response and provides accurate power limiting. It includes a highly-linear multiplier for near-unity power factor and input voltage feedforward implementation. The PWM section operates with peak-current-mode control and offers programmable maximum duty cycle and soft-start capabilities. The UCC28510DW supports leading-edge modulation for the PFC stage and trailing-edge modulation for the PWM stage, which minimizes ripple current in the boost capacitor. It is available in a 20-pin SOIC package and operates over a temperature range of -40¬8C to +105¬8C. The device also includes various protection features such as under-voltage lockout (UVLO), zero power detect, and over-voltage protection (OVP). Engineers considering this product should evaluate its specifications against their project requirements, particularly in applications where power factor correction and PWM control are critical.