A High-Efficiency Dimmable LED Driver for Low-Power Lighting Applications

被引：346
|
作者：
Chiu, Huang-Jen [1 ]
Lo, Yu-Kang [1 ]
Chen, Jun-Ting [1 ]
Cheng, Shih-Jen [1 ]
Lin, Chung-Yi [1 ]
Mou, Shann-Chyi [2 ]
机构：
[1] Natl Taiwan Univ Sci & Technol, Dept Elect Engn, Taipei 10607, Taiwan
[2] Ching Yun Univ, Dept Mech Engn, Jhongli 320, Taiwan
来源：
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS | 2010年 / 57卷 / 02期
关键词：
Coupled inductor single-ended primary inductance converter power factor correction (SEPIC PFC); dimmable light-emitting diode (LED) driver; universal input voltage; BACKLIGHT DRIVING SYSTEM; CONVERTER; DESIGN; CONTROLLER; VOLTAGE; BALLAST;
D O I：
10.1109/TIE.2009.2027251
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
This paper presents a dimmable light-emitting diode (LED) driver with adaptive feedback control for low-power lighting applications. An improved pulsewidth modulation dimming technique is studied for regulating the LED current and brightness. Under universal input voltage operation, high efficiency and high power factor can be achieved by a coupled inductor single-ended primary inductance converter power factor correction (PFC) converter with a simple commercial transition-mode PFC controller. The operation principles and design considerations of the studied LED driver are analyzed and discussed. A laboratory prototype is also designed and tested to verify the feasibility.
引用
收藏
页码：735 / 743
页数：9
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