MODULAR DIMMABLE LIGHT-EMITTING-DIODE DRIVER FOR GENERAL ILLUMINATION APPLICATIONS

被引：0
|
作者：
Ching, T. W. [1 ]
机构：
[1] Univ Macau, Dept Electromech Engn, Taipa Isl, Macau, Peoples R China
来源：
2010 23RD CANADIAN CONFERENCE ON ELECTRICAL AND COMPUTER ENGINEERING (CCECE) | 2010年
关键词：
Current-regulated; PWM dimming; LED drives; LAMPS;
D O I：
暂无
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
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.
引用
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页数：4
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