FAN7930 Datasheet Critical Conduction Mode PFC Controller

Manufacturer: Fairchild (now onsemi)

Overview: www.DataSheet4U.com FAN7930 — Critical Conduction Mode PFC Controller April 2010 FAN7930 Critical Conduction Mode PFC.

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Datasheet Details

Part number	FAN7930
Manufacturer	Fairchild (now onsemi)
File Size	1.21 MB
Description	Critical Conduction Mode PFC Controller
Download	FAN7930 Download (PDF)

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.

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

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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