BW6562A Datasheet, PDF (1/15 Pages) Bruckewell Technology LTD – High PFC LED Driver

BW6562A High PFC LED Driver
Features
 Single stage fly-back controller with PFC
 Transition-mode operation
 Ultra-low start-up current
 Internal start-up timer
 Low operating supply current
 Low quiescent current
 Disable function on error amplifier (E/A) input
 Totem pole, push-pull output drive
 Adjustable output over-voltage protection
 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
© 2012 Bruckewell Technology Corp., Ltd.
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