Modular dimmable light-emitting-diode driver for general illumination applications

Author

Ching, T.W.

Author_Institution

Dept. of Electromech. Eng., Univ. of Macau, Macau, China

fYear

2010

fDate

2-5 May 2010

Firstpage

1

Lastpage

4

Abstract

This paper aims to present a modular dimmable high brightness (HB) light-emitting-diode (LED) driver for retrofitting general/residential illumination systems. An improved micro-controller based pulse-width modulation dimming technique is studied and implemented for selecting the brightness of LEDs. Under universal input voltage operation, high power factor and high efficiency can be achieved by a power-factor-correction converter followed by a coupled inductor fly-back converter. The operation principles of the proposed modular HB-LED dimmer and driver will be analyzed and discussed. A laboratory prototype is also designed and tested for verification.

Keywords

PWM power convertors; driver circuits; light emitting diodes; microcontrollers; power factor correction; coupled inductor fly-back converter; microcontroller; modular HB-LED dimmer; modular dimmable high brightness LED driver; modular dimmable light-emitting-diode driver; power-factor-correction converter; pulse-width modulation dimming technique; residential illumination systems; retrofitting general illumination systems; universal input voltage operation; Brightness; Converters; Driver circuits; Light emitting diodes; Lighting; Presses; Pulse width modulation; Current-regulated; LED drives; PWM dimming;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Computer Engineering (CCECE), 2010 23rd Canadian Conference on

Conference_Location

Calgary, AB

ISSN

0840-7789

Print_ISBN

978-1-4244-5376-4

Electronic_ISBN

0840-7789

Type

conf

DOI

10.1109/CCECE.2010.5575236

Filename

5575236