UCC3817AN Texas Instruments - Yeehing Electronics

6kHz-220kHz CCM PFC controller with 16V/10V UVLO and Smaller Gate Drive Resistor, 0°C to 70°C

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The UCC3817A and the UCC3818A family provides all the functions necessary for active power factor corrected preregulators. The controller achieves near unity power factor by shaping the ac input line current waveform to correspond to that of the ac input line voltage. Average current mode control maintains stable, low distortion sinusoidal line current.