BW6562A

Manufacturer

Bruckewell Technology Corp

 

  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.