An Efficient Driver for Dimmable LED Lighting

被引：105
|
作者：
Moo, Chin-Sien [1 ]
Chen, Yu-Jen [1 ]
Yang, Wen-Ching [2 ]
机构：
[1] Natl Sun Yat Sen Univ, Dept Elect Engn, Kaohsiung 80424, Taiwan
[2] NXP Semicond Taiwan Ltd, Kaohsiung 81170, Taiwan
来源：
IEEE TRANSACTIONS ON POWER ELECTRONICS | 2012年 / 27卷 / 11期
关键词：
Amplitude modulation (AM); double pulse-width modulation (DPWM); flyback converter; light-emitting-diode (LED); PEAK;
D O I：
10.1109/TPEL.2012.2183892
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
An efficient driver circuit is proposed for light-emitting-diode (LED) lamps with a dimming feature. The driver consists of a flyback converter in series with the dc-link. By processing partial power of the driver circuit for current regulation, the loss produced by power conversion can be diminished. The dimming feature is accomplished by means of current amplitude modulation (AM) or double pulse-width modulation (DPWM). The detailed circuit operation stages and analysis are provided. A laboratory circuit is designed for a 45 W LED lamp. Experimental results demonstrate that a high efficiency can be achieved, even at dimmed lamp power.
引用
收藏
页码：4613 / 4618
页数：6
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