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HV9931 Datasheet

Part Number HV9931
Manufacturers Microchip
Logo Microchip
Description Unity Power Factor LED Lamp Driver
Datasheet HV9931 DatasheetHV9931 Datasheet (PDF)

HV9931 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   HV9931






Part Number HV9931
Manufacturers Supertex
Logo Supertex
Description UNITY POWER FACTOR LED LAMP DRIVER
Datasheet HV9931 DatasheetHV9931 Datasheet (PDF)

HV9931 Initial Release HV9931 Unity Power Factor LED Lamp Driver Features Constant Output Current 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 www.DataSheet4U.com Input Current limit Enable, PWM and Phase Dimming General Description The HV9931 is a fixed frequency PWM controller IC designed to control an LED lamp driver using a single-stage PFC buckboost-.

  HV9931   HV9931







Unity Power Factor LED Lamp Driver

HV9931 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 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. The HV9931 uses open-loop peak current control to regulate both input and output currents. This control technique eliminates the need for loop compensation, limits the input inrush current, and is inherently protected from Input Undervoltage condition. Capacitive isolation protects the LED Lamp from failure of the switching MOSFET. The HV9931 provides a low-frequency PWM dimming input that accepts an external control signal with a duty ratio of 0% to 100% and a frequency of up to a few kilohertz. The PWM dimming capability enables HV9931 phase control solutions that .


2024-02-05 : MIC28304    HV9931    MCP1319M    MCP1316M    MCP1318M    TC51    MMA155PP5    MCP39F511N    SA50-120-5-15T    SA50-120-5-12T   


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