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FAN7529 Datasheet Critical Conduction Mode Pfc Controller

Manufacturer: Fairchild (now onsemi)

Overview: FAN7529 Critical Conduction Mode PFC Controller FAN7529 Critical Conduction Mode PFC Controller April.

General Description

The FAN7529 is an active power factor correction (PFC) controller for boost PFC applications that operates in critical conduction mode (CRM).

It uses the voltage mode PWM that pares an internal ramp signal with the error amplifier output to generate MOSFET turn-off signal.

Because the voltage-mode CRM PFC controller does not need rectified AC line voltage information, it saves the power loss of the input voltage sensing network necessary for the current-mode CRM PFC controller.

Key Features

  • Low Total Harmonic Distortion (THD).
  • Precise Adjustable Output Over-Voltage Protection.
  • Open-Feedback Protection and Disable Function.
  • Zero Current Detector.
  • 150µs Internal Start-up Timer.
  • MOSFET Over-Current Protection.
  • Under-Voltage Lockout with 3.5V Hysteresis.
  • Low Start-up (40µA) and Operating Current (1.5mA).
  • Totem Pole Output with High State Clamp.
  • +500/-800mA Peak Gate Drive Current.
  • 8-Pin.

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FAN7529 Distributor