GENERAL DESCRIPTION
The ML4822 is a PFC controller designed specifically for high power applications. The controller contains all of the functions necessary to implement an average current boost PFC converter, along with a Zero Voltage Switch (ZVS) controller to reduce diode recovery and MOSFET turn-on losses.

FEATURES
■ Average current sensing, continuous boost, leading edge PFC for low total harmonic distortion and near unity power factor
■ Built-in ZVS switch control with fast response for high efficiency at high power levels
■ Average line voltage compensation with brownout control
■ Current fed gain modulator improves noise immunity and provides universal input operation
■ Overvoltage comparator eliminates output “runaway” due to load removal
■ UVLO, current limit, and soft-start
■ Precision 1% reference