DocumentCode
2037047
Title
A high efficiency driver for high-brightness white LED lamp
Author
Chen, Yu-Jen ; Yang, Wen-Ching ; Moo, Chin-Sien ; Hsieh, Yao-Ching
Author_Institution
Electr. Eng. Dept., Nat. Sun Yat-Sen Univ., Kaohsiung, Taiwan
fYear
2010
fDate
21-24 Nov. 2010
Firstpage
2313
Lastpage
2317
Abstract
A high efficiency driver is proposed for the high-brightness white LED lamp. The driver consists of a dc power source in series with a current regulator. The current regulation is accomplished by partially processing the power from the dc power source. The dimming feature of the LED lamp can be made by regulating the current. The detailed circuit operation stages and analysis are provided. A laboratory circuit is designed for an LED lamp which is composed of eight high-brightness LEDs. Experimental results demonstrate that a high efficiency can be achieved even at a dimmed lamp power.
Keywords
LED lamps; brightness; driver circuits; current regulator; dc power source; dimmed lamp power; high efficiency driver; high-brightness white LED lamp; laboratory circuit; light emitting diode; LED driver; LED lamp; current regulation;
fLanguage
English
Publisher
ieee
Conference_Titel
TENCON 2010 - 2010 IEEE Region 10 Conference
Conference_Location
Fukuoka
ISSN
pending
Print_ISBN
978-1-4244-6889-8
Type
conf
DOI
10.1109/TENCON.2010.5685986
Filename
5685986
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