DocumentCode :
1382135
Title :
High-Frequency High-Efficiency 
Resonant Converters With Synchronous Rectifiers
Author :
Huang, Daocheng ; Fu, Dianbo ; Lee, Fred C. ; Kong, Pengju
Author_Institution :
Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
Volume :
58
Issue :
8
fYear :
2011
Firstpage :
3461
Lastpage :
3470
Abstract :
This paper proposes a CLL resonant dc-dc converter as an option for offline applications. This topology can achieve zero-voltage switching from zero load to a full load and zero-current switching for output rectifiers and makes the implementation of a secondary rectifier easy. This paper also presents a novel methodology for designing CLL resonant converters based on efficiency and holdup time requirements. An optimal transformer structure is proposed, which uses a current-type synchronous rectifier (SR) drive scheme. An 800-kHz 250-W CLL resonant converter prototype is built to verify the proposed circuit, design method, transformer structure, and SR drive scheme.
Keywords :
DC-DC power convertors; rectifiers; resonant power convertors; switching convertors; zero current switching; zero voltage switching; frequency 800 kHz; high-frequency high-efficiency CLL resonant converters; holdup time; power 250 W; resonant dc-dc converter; secondary rectifier easy; synchronous rectifiers; transformer structure; zero-current switching; zero-voltage switching; Capacitors; Converters; Design methodology; Rectifiers; Resonant frequency; Strontium; Zero voltage switching; Design methodology; driving scheme; high efficiency; high frequency; high power density; resonant converter; synchronous rectifier; transformer;
fLanguage :
English
Journal_Title :
Industrial Electronics, IEEE Transactions on
Publisher :
ieee
ISSN :
0278-0046
Type :
jour
DOI :
10.1109/TIE.2010.2093474
Filename :
5639045
Link To Document :
