FAN7528 Datasheet Critical Conduction Mode PFC Controller

Manufacturer: Fairchild (now onsemi)

FAN7528 critical conduction mode pfc controller by Fairchild (now onsemi) - Datasheet Preview

Datasheet Details

Part number	FAN7528
Manufacturer	Fairchild (now onsemi)
File Size	2.56 MB
Description	Critical Conduction Mode PFC Controller
Download	FAN7528 Download (PDF)

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.

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

Overview

FAN7528 Dual-Output, Critical Conduction Mode PFC Controller February 2007 FAN7528 Dual-Output, Critical Conduction Mode PFC.

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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