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FAN7930 - Critical Conduction Mode PFC Controller

General Description

The FAN7930 is an active power factor correction (PFC) controller for boost PFC applications that operate in critical conduction mode (CRM).

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

Key Features

  • PFC Ready Signal Input Voltage Absent Detection Circuit Maximum Switching Frequency Limitation Internal Soft-Start and Startup without Overshoot Internal Total Harmonic Distortion (THD) Optimizer Precise Adjustable Output Over-Voltage Protection Open-Feedback Protection and Disable Function Zero Current Detector 150μs Internal Startup Timer MOSFET Over-Current Protection Under-Voltage Lockout with 3.5V Hyst.

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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.DataSheet4U.com FAN7930 — Critical Conduction Mode PFC Controller April 2010 FAN7930 Critical Conduction Mode PFC Controller Features ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ PFC Ready Signal Input Voltage Absent Detection Circuit Maximum Switching Frequency Limitation Internal Soft-Start and Startup without Overshoot Internal Total Harmonic Distortion (THD) Optimizer Precise Adjustable Output Over-Voltage Protection Open-Feedback Protection and Disable Function Zero Current Detector 150μs Internal Startup Timer MOSFET Over-Current Protection Under-Voltage Lockout with 3.