DocumentCode
3630998
Title
Light-Load Efficiency Optimization Method
Author
Yungtaek Jang;Milan M. Jovanovic;David L. Dillman
Author_Institution
Power Electronics Laboratory, Delta Products Corporation, P.O. Box 12173, 5101 Davis Drive, Research Triangle Park, NC 27709
fYear
2009
Firstpage
1138
Lastpage
1144
Abstract
A method of maintaining high power-conversion efficiency across the entire load range and its circuit implementations are described. The proposed method substantially increases the conversion efficiency at light loads by minimizing switching and driving losses of semiconductor switches, as well as core losses of magnetic components. These losses are minimized by periodically turning off and on the power converter and by controlling the converter so that when the converter is on it operates at the power level that exhibits the maximum efficiency. The performance of the proposed method was evaluated on a 500-W, 400-V/12-V dc/dc converter and a 1-kW ac/dc boost PFC front end.
Keywords
"Optimization methods","Power semiconductor switches","Magnetic switching","Magnetic semiconductors","Core loss","Power supplies","Circuits","Power conversion","Turning","DC-DC power converters"
Publisher
ieee
Conference_Titel
Applied Power Electronics Conference and Exposition, 2009. APEC 2009. Twenty-Fourth Annual IEEE
ISSN
1048-2334
Print_ISBN
978-1-4244-2811-3
Type
conf
DOI
10.1109/APEC.2009.4802806
Filename
4802806
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