DocumentCode
1881029
Title
Improving current regulation for offline LED driver
Author
Shao, Jianwen
Author_Institution
STMicroelectronics, Schaumburg, IL, USA
fYear
2010
fDate
21-25 Feb. 2010
Firstpage
601
Lastpage
604
Abstract
A buck converter is a very common choice for non-isolated offline LED applications, using peak current regulation. The problem for peak current regulation is that the average current of the LED string will vary with different numbers of LEDs. This paper presents two simple and cost effective ways to compensate the average current variation without losing the simplicity of peak current regulation.
Keywords
electric current control; light emitting diodes; power convertors; buck converter; offline LED driver; peak current regulation; Buck converters; Costs; Current control; Equations; Feedback circuits; Inductors; Light emitting diodes; MOSFET circuits; Testing; Voltage control;
fLanguage
English
Publisher
ieee
Conference_Titel
Applied Power Electronics Conference and Exposition (APEC), 2010 Twenty-Fifth Annual IEEE
Conference_Location
Palm Springs, CA
ISSN
1048-2334
Print_ISBN
978-1-4244-4782-4
Electronic_ISBN
1048-2334
Type
conf
DOI
10.1109/APEC.2010.5433610
Filename
5433610
Link To Document