Autoswitching LED Driver

被引：11
作者：
Nerone, Louis R. [1 ]
机构：
[1] GE Lighting, E Cleveland, OH 44112 USA
来源：
IEEE TRANSACTIONS ON POWER ELECTRONICS | 2012年 / 27卷 / 08期
关键词：
Autoswitching; Class D converter; LED; light engine; resonant circuit; self-oscillating; thermal foldback; CLASS-D CONVERTER;
D O I：
10.1109/TPEL.2012.2186321
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：
A novel autoswitching Class D converter is proposed as a means to power an LED light engine. The control system regulates the LED current by adjusting the series resonant frequency. The control transformer provides intrinsic isolation between the power converter and the 0-10 V dimming interface. An innovative thermal fold-back method limits the maximum temperature of the driver and the LED array. The autoswitching methodology and the control methodology are presented in detail. The experimental model achieves an efficiency of greater than 93% at 277 VAC while producing 100 W of output power. The light engine is dimmable to less than 10% of the rated output current. A new miswiring protection circuit does not use a thermistor and provides excellent linearity in the 0-10 V dimming interface.
引用
收藏
页码：3834 / 3842
页数：9
相关论文
共 17 条
[1]  
Baxandall P. J., 1960, SESS APPL LIN AMPL O, P748
[2]  
Fairchild Semiconductor Corporation, 2011, AN9738 FAIRCH SEM CO
[3]  
Kazimierczuk M.K., 1995, RESONANT POWER CONVE
[4]  
Krauss H. L., 1980, SOLD STATE RADIO ENG, P433
[5]  
Nerone L. R., 2000, IEEE 35 ANN M IND AP
[6]  
Nerone L. R., 2008, U.S. Patent, Patent No. [7,436,124, 7436124]
[7]  
Nerone L. R., 1999, U.S. Patent, Patent No. [5965 985, 5965985]
[8]  
Nerone L. R., 2011, U.S. Patent, Patent No. [7,990,070, 7990070]
[9]  
Nerone L. R., 2010, U.S. Patent Application Publication, Patent No. [US2010/0244702 A1, 20100244702]
[10]  
Nerone L. R., 2008, INT S CIRC SYST SEAT
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