HV9931
HV9931 is Unity Power Factor LED Lamp Driver manufactured by Microchip Technology.
Unity Power Factor LED Lamp Driver
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
Applications
- Offline LED Lamps and Fixtures
- Street Lamps
- Traffic Signals
- Decorative Lighting
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...
