A high brightness light-emitting diode driver with power factor and total harmonic distortion improved

Author

Hwu, K.I. ; Tu, W.C.

Author_Institution

Dept. of Electr. Eng., Nat. Taipei Univ. of Technol., Taipei, Taiwan

fYear

2011

fDate

6-11 March 2011

Firstpage

713

Lastpage

717

Abstract

In this paper, a novel bridgeless light-emitting diode (LED) driver is presented. Via a simple control circuit, the power factor (PF) and total harmonic distortion (THD) of the proposed bridgeless LED driver are significantly improved as compared with the traditional one. The proposed AC LED driver is capacitorless and inductorless, thereby causing the integral circuit design to be easy to achieve. Besides, by doing so, there are other advantages, such as reduction of LED heat dissipation, enhancement of life of the LED driver, reduction of size and weight of light equipment. In this paper, the basic operating principles of the LED driver is described in detail, along with some simulated and experimental results to demonstrate the effectiveness and feasibility of the proposed LED driver.

Keywords

driver circuits; harmonic distortion; integrated circuit design; light emitting diodes; power factor; AC LED driver; LED driver life enhancement; LED heat dissipation; high brightness light-emitting diode driver; integral circuit design; power factor; total harmonic distortion; Driver circuits; Leg; Light emitting diodes; Resistors; Switches; Topology;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition (APEC), 2011 Twenty-Sixth Annual IEEE

Conference_Location

Fort Worth, TX

ISSN

1048-2334

Print_ISBN

978-1-4244-8084-5

Type

conf

DOI

10.1109/APEC.2011.5744674

Filename

5744674