BW6562A High PFC LED Driver

© 2012 Bruckewell Technology Corp., Ltd.

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www.bruckewell-semi.com/

Features

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Single stage fly-back controller with PFC



Transition-mode operation



Ultra-low start-up current

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Internal start-up timer

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Low operating supply current

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Low quiescent current

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Disable function on error amplifier (E/A) input

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Totem pole, push-pull output drive

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Adjustable output over-voltage protection

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Under-voltage lockout with hysteresis



1% Precision internal reference voltage

Typical Applications



Fly-back power converters



PFC pre-regulators to meet IEC61000-3-2



Hi-end AC-DC adapter/charger



Electronic single stage LED driver



Electronic Ballast

Product Description

The BW6562A is a cost effective high performance

transition-mode (TM) power factor correction (PFC)

controller IC optimized for high PFC LED driver, battery

chargers and pre-regulator applications. The BW6562A

integrates an internal start-up timer, a highly linear

multiplier with Total Harmonics Distortion (THD) optimizer

for near unity power factor, a Zero Current Detector (ZCD)

to ensure transition-mode operation and a current sensing

comparator with built-in leading edge blanking. With ZCD

control, power MOSFET is always turned on with zero

inductor current. Consequently, transition-mode control

achieves lower switching loss and reduced noise. The

BW6562A offers great protection coverage including

system accurate adjustable over-voltage protection (OVP),

input under-voltage lockout (UVLO), multiplier output clamp

and GD output clamp for external power MOSFET

protection.

The totem pole output stage is capable of

delivering sink/source drive current of +800mA/-600mA.

The BW6562A is available in SOP-8 package.

Typical Application Circuit