期刊
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
卷 57, 期 2, 页码 735-743出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIE.2009.2027251
关键词
Coupled inductor single-ended primary inductance converter power factor correction (SEPIC PFC); dimmable light-emitting diode (LED) driver; universal input voltage
资金
- National Science Council of Taiwan [NSC 96-2628-E-011-115-MY3]
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.
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