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Partname:HV9931LG-G
Description:HV9931 Unity Power Factor LED Lamp Driver
Manufacturer:
Datasheet:PDF (717K).
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The HV9931 is a fixed frequency PWM controller IC designed to control an LED lamp driver using a single-stage PFC buckboost-buck topology. It can achieve a unity power factor and a very high step-down ratio that enables driving a single high-brightness LED from the 85-264VAC input without a need for a power transformer. This topology allows reducing the filter capacitors and using non-electrolytic capacitors to improve reliability. The HV9931 uses open-loop peak current control to regulate both the input and the output current. This control technique eliminates a need for loop compensation, limits the input inrush current, and is inherently protected from input under-voltage condition.

Click here to download HV9931LG-G Datasheet
Click here to download HV9931LG-G Datasheet
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