Febuary 2013

© 2011 Fairchild Semiconductor Corporation

1

www.fairchildsemi.com

FAN6754WA • Rev. 1.0.6

FAN6754WA

Highly Integrated Green-Mode PWM Controller

Features

FAN6754WAMRMY, Latch for FAN6754WAMLMY

Applications

General-purpose switch-mode power supplies (SMPS)

and flyback power converters, including:

Description

The highly integrated FAN6754WA PWM controller

provides several features to enhance the performance

of flyback converters. To minimize standby power

consumption,

a

proprietary

Green-Mode

function

provides off-time modulation to continuously decrease

the switching frequency under light-load conditions.

Under

zero-load

and

very

light-load

conditions,

FAN6754WA saves PWM pulses by entering "deep"

Burst Mode. Burst Mode enables the power supply to

meet international power conservation requirements.

FAN6754WA also integrates a frequency-hopping

function that helps reduce EMI emission of a power

supply

with

minimum

line

filters.

The

built-in

synchronized slope compensation helps achieve stable

peak-current control. To keep constant output power

limit over universal AC input range, the current limit is

adjusted according to AC line voltage detected by the

HV pin. The gate output is clamped at 13 V to protect

the external MOSFET from over-voltage damage.

Other protection functions include AC input brownout

protection with hysteresis, sense pin short-circuit

temperature protection, an external NTC thermistor can

be applied to sense the external switcher’s temperature.

circuit is used to latch-off the controller. The Latch Mode

FAN6754WA is available in an 8-pin SOP package.

Ordering Information

Part Number

Operating

Temperature Range

Package

Packing Method

FAN6754WAMRMY

-40 to +105°C

8-Pin, Small Outline Package (SOP)

Tape & Reel

FAN6754WAMLMY