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HV9931 Datasheet Unity Power Factor LED Lamp Driver

Manufacturer: Microchip Technology

General Description

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 power transformer.

This topology allows reducing the filter capacitors and using non-electrolytic capacitors to improve reliability.

Overview

HV9931 Unity Power Factor LED Lamp Driver.

Key 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.
  • Input Current Limit.
  • Enable Pulse-Width Modulation (PWM) Dimming and Phase Dimming.