Single Stage Offline LED Driver

Author:

1 February 2009

conference paper
Published by Institute of Electrical and Electronics Engineers (IEEE)

p. 582-586
DOI:10.1109/apec.2009.4802716

Abstract

A non-isolated soft-switched high power factor offline LED driver is introduced in the paper. The buck-boost converter is chosen for this application due to its simplicity and low cost. The converter operates with constant peak current for constant power control, and in transition mode (boundary mode between CCM and DCM) to achieve soft switching. High power factor is achieved by reshaping the peak current nearby the zero crossing of input AC line.

Keywords

LIGHT EMITTING DIODES
REACTIVE POWER
VOLTAGE
COSTS
INDUCTORS
LED LAMPS
US DEPARTMENT OF ENERGY
CIRCUIT SYNTHESIS
DRIVER CIRCUITS
COUPLING CIRCUITS

This publication has 1 reference indexed in Scilit:

A Single-Stage Power Converter for a Large Screen LCD Back-Lighting
2006