Product Overview

FAN7930C: Power Factor Controller (PFC), CrCM, PFC-Ready Signal

For complete documentation, see the data sheet.

The FAN7930C 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. FAN7930C provides

over-voltage protection (OVP), open-feedback protection, over-current protection (OCP), input-voltage-absent detection, and under-

voltage lockout protection (UVLO). The PFC-ready pin can be used to trigger other power stages when PFC output voltage reaches

the proper level with hysteresis. The FAN7930C can be disabled if the INV pin voltage is lower than 0.45V and the operating current

decreases to a very low level. Using a new variable on-time control method, THD is lower than the conventional CRM boost PFC

ICs.

Features

• PFC-Ready Signal

• Input Voltage Absent Detection

• 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 (ZCD)

• 150 µs Internal Startup Timer

• MOSFET Over-Current Protection (OCP)

For more features, see the data sheet

Applications

• LCD Monitor

• LCD TV

• LED TV

• CRT TV

Part Electrical Specifications

Product Compliance Status PFC

Mode

Freque

ncy

Operati

Control

Mode

Topolo

Typ

(kHz)

Max

(V)

Drive

Cap.

(mA)

UVLO

(V)

Latch UVP Inhibiti

Packag

e Type

FAN7930CMX-G

Pb-free

Halide free

Active CrCM/

BCM

Variabl

Voltag

e Mode

Step-

Variabl

24 220 /

220

12 No No No SOIC-8

For more information please contact your local sales support at www.onsemi.com.

Created on: 3/29/2019