A High-Power-Factor LED Driver with Zero-Voltage Switching-on Characteristics

被引：0

作者：

Cheng, Hung-Liang ^{[1
]}

Lin, Cheng-Wei ^{[1
]}

Chang, Yong-Nong ^{[2
]}

Hsieh, Yao-Ching ^{[3
]}

机构：

[1] I Shou Univ, Dept Elect Engn, Kaohsiung, Taiwan

[2] Natl Formosa Univ, Dept Elect Engn, Yunlin, Taiwan

[3] Natl Dong Hwa Univ, Dept Elect Engn, Hualien, Taiwan

来源：

2013 IEEE 10TH INTERNATIONAL CONFERENCE ON POWER ELECTRONICS AND DRIVE SYSTEMS (IEEE PEDS 2013) | 2013年

关键词：

D O I：

暂无

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：

This paper proposes a high-efficiency LED driver consisting of interleaved buck-boost and buck converters. With no need to use any auxiliary reactive components, the active switches can operate at zero-voltage switching on (ZVS). The buck-boost converter is operated at discontinuous-conduction mode (DCM) to perform the function of power-factor correction (PFC). The buck converter regulates the output voltage to drive LEDs. A prototype 60-W LED driver is built and tested. Experimental results show that the switching losses can be effectively reduced by operating the active switches at ZVS. The measured power factor and circuit efficiency are as high as 0.99 and 93%, respectively.

引用

页码：334 / 339

页数：6

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