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FAN7528 - Critical Conduction Mode PFC Controller

General Description

The FAN7528 is an active power factor correction (PFC) controller for boost PFC applications that operates in critical conduction mode (CRM).

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

Key Features

  • Low Total Harmonic Distortion (THD).
  • Dual Output Voltage Control.
  • Precise Adjustable Output Over-Voltage Protection.
  • Open-Feedback Protection and Disable Function.
  • Zero Current Detector.
  • 160µs 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.
  • ±400mA Peak Ga.

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Full PDF Text Transcription for FAN7528 (Reference)

Note: Below is a high-fidelity text extraction (approx. 800 characters) for FAN7528. For precise diagrams, and layout, please refer to the original PDF.

FAN7528 Dual-Output, Critical Conduction Mode PFC Controller February 2007 FAN7528 Dual-Output, Critical Conduction Mode PFC Controller Features „ Low Total Harmonic Dist...

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ical Conduction Mode PFC Controller Features „ Low Total Harmonic Distortion (THD) „ Dual Output Voltage Control „ Precise Adjustable Output Over-Voltage Protection „ Open-Feedback Protection and Disable Function „ Zero Current Detector „ 160µs 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 „ ±400mA Peak Gate Drive Current „ 8-Pin DIP or 8-Pin SOP Description The FAN7528 is an active power factor correction (PFC) controller for boost PFC applications that operates in critical

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