Microchip HV9931LG-G

Manufacturer No:

HV9931LG-G

Manufacturer:

Microchip

Package:

8-SOIC (0.154, 3.90mm Width)

Description:

UNITY POWER FACTOR LED LAMP DRIVER

Quantity:

Delivery:

Payment:

In Stock :Available

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HV9931LG-G information

Microchip HV9931LG-G technical specifications, attributes, parameters and parts with similar specifications to Microchip HV9931LG-G.

Type
Parameter

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

Vfb (V)
0

Oja (C/W)
128

Extra LDOs
0

Vdropout (mV)
0

IQ LDO
0

Download datasheets and manufacturer documentation for Microchip HV9931LG-G.

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.

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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