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FAN4822 - ZVS Average Current PFC Controller

General Description

The FAN4822 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.

Key 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.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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www.fairchildsemi.com FAN4822 ZVS Average Current PFC Controller 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 1.3% reference General Description The FAN4822 is a PFC controller designed specifically for high power applications.