HV9931 Datasheet (Microchip) - Unity Power Factor LED Lamp Driver

HV9931, Unity Power Factor LED Lamp Driver

The HV9931 is a fixed-frequency PWM controller IC designed to control an LED lamp driver using a single-stage PFC buck-boost-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 85 VAC to 264 VAC input without a pow

HV9931 Features

* Constant Output Current LED Driver

* Large Step-Down Ratio

* Unity Power Factor

* Low-Input Current Harmonic Distortion

* Fixed-Frequency or Fixed Off-Time Operation

* Internal 450V Linear Regulator

* Input and Output Current Sensing