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HV9931

Unity Power Factor LED Lamp Driver

Status: In Production

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
  • Input current limit
  • Enable, PWM and phase dimming
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Overview
Documents
Development Environment
Similar Devices
RoHS Information
Add To Cart

Device Overview

Summary

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. Capacitive isolation protects the LED Lamp from failure of the switching MOSFET. HV9931 provides a low-frequency PWM dimming input that can accept an external control signal with a duty ratio of 0-100% and a frequency of up to a few kilohertz. The PWM dimming capability enables HV9931 phase control solutions that can work with standard wall dimmers.

Additional 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
  • Input current limit
  • Enable, PWM and phase dimming
Parametrics
Name
Value
Topology
Buck
+Vin min (V)
8
+Vin max (V)
450
Output Current
External FET
Dimming
PWM
Package
SOIC
Product Type
Off Line
Operating Iq (µA)
0.5
Θja (C/W)
128

Documents

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Development Environment

  • Demo & Evaluation Boards
Demo & Evaluation Boards
HV9931DB1 Demo Board
HV9931DB1 Demo Board ( HV9931DB1 )
(Not Recommended for new design)

The HV9931 LED driver is primarily targeted at low to medium power LED lighting applications where galvanic isolation of the LED string is not an essential requirement. The driver provides near unity power factor and constant current regulation using a two stage topology driven by a single MOSFET and control IC. Triac dimming of this design is possible with the addition of some components for...

Learn More
HV9931DB2 Demo Board
HV9931DB2 Demo Board ( HV9931DB2 )

The HV9931 LED driver is primarily targeted at low to medium power LED lighting applications where galvanic isolation of the LED string is not an essential requirement. The driver provides near unity power factor and constant current regulation using a two stage topology driven by a single MOSFET and control IC. Triac dimming of this design is possible with the addition of some components for...

Learn More
Add To Cart
HV9931DB5 Demo Board
HV9931DB5 Demo Board ( HV9931DB5 )
(Not Recommended for new design)

The HV9931DB5 demoboard is a high brightness (HB) LED power driver to supply one HB LED, using the HV9931 IC from either a 110 or 220VAC supply. The HV9931DB5 is ideal for incandescent retrofit applications, as it features a very small size and a low component count.  The HV9931DB5 avoids the use of electrolytic capacitors, which reduce the lifetime of the circuit in high ambient temperatures...

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (grams)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
HV9931LG-G
0.078000
0.230303
8
SOIC
.150In(3.90mm)
Matte Tin
e3
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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