DocumentCode
1447217
Title
Magnetic control of DC-DC resonant converters provides constant frequency operation
Author
Alonso, J. Marcos ; Perdigao, M.S. ; Gacio, David ; Campa, L. ; Saraiva, E.S.
Author_Institution
Electr. Eng. Dept., Univ. de Oviedo, Gijon, Spain
Volume
46
Issue
6
fYear
2010
Firstpage
440
Lastpage
442
Abstract
A solution to operate DC-DC resonant converters at constant frequency is proposed. A variable inductor is used to achieve output voltage control and regulation without changing the switching frequency of the converter. The output voltage characteristic of the parallel resonant converter operating under this so-called magnetic control is briefly analysed. A 48 V input, 5 V output, 500 kHz, 25 W prototype is presented to prove the feasibility of the proposed control method.
Keywords
DC-DC power convertors; power inductors; resonant power convertors; voltage control; DC-DC resonant converter; constant frequency operation; frequency 500 kHz; magnetic control; output voltage control; parallel resonant converter; power 25 W; regulation; switching frequency; variable inductor; voltage 48 V;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el.2010.0191
Filename
5434635
Link To Document