Dimmable LED Driver Based on Twin-Bus Converter and Differential-Mode Transformer

被引:5
|
作者
Hwu, K. I. [1 ]
Jiang, W. Z. [1 ]
Hsiao, C. W. [1 ]
机构
[1] Natl Taipei Univ Technol, Dept Elect Engn, Taipei 10608, Taiwan
来源
JOURNAL OF DISPLAY TECHNOLOGY | 2016年 / 12卷 / 10期
关键词
Differential-mode transformer; LED driver; twin-bus converter; BOOST CONVERTER; EFFICIENCY; VOLTAGE; DESIGN;
D O I
10.1109/JDT.2016.2574321
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
In this paper, a four-channel lighting-emitting diode (LED) driver is presented, which combines a twin-bus converter and three differential-mode transformers. In this LED driver, the twin-bus converter can achieve reduction of the voltage stress of the switch, and the differential-mode transformers can achieve current sharing. Furthermore, the twin-bus converter can provide demagnetizing paths for the differential-mode transformers. Above all, the LED strings can be easily expanded. Moreover, the LED currents can be regulated by the dimming control switch. Finally, theoretical deductions and experimental results are provided to demonstrate the effectiveness of the proposed topology.
引用
收藏
页码:1122 / 1129
页数:8
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