Texas Instruments High-Performance Analog PFC (Power Factor Correction) UCC28501N

The UCC28501N is a BiCMOS Power Factor Correction (PFC) and PWM combination controller designed to achieve near-unity power factor by shaping the AC input line current waveform. It features average current mode control in the PFC stage and peak current mode control in the second stage DC-to-DC converter, allowing for efficient power conversion. The device includes programmable oscillator capabilities, leading edge/trailing edge modulation to minimize output ripple, and low startup supply current. This controller supports synchronized second stage startup with programmable soft-start and shutdown features, enhancing system reliability. It incorporates over-voltage protection and zero power detection to prevent output when the voltage falls below a specified threshold. The UCC28501N operates effectively across a wide range of input line voltages, making it suitable for various applications requiring power factor correction and efficient DC-to-DC conversion.