The Novel Synchronous Rectifier Driving Method for LLC Series Resonant Converter

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This paper proposes a current driving scheme for synchronous rectifier (SR) of the LLC series resonant converter. Because the magnetizing current of transformer is included in the primary winding of transformer, it cannot be used to generate the driving signals of SRs. To cancel the magnetizing current from primary current, the magnetizing current detector circuit is used. With the proposed driving scheme, the SR body diode conduction is reduced to almost zero. Moreover, the driving scheme eliminates the reverse recovery problem of SRs. Therefore, higher efficiency can be achieved. To verify the proposed method, a 300W LLC series resonant converter prototype is made.
Publisher
IEEE
Issue Date
2012-10-27
Language
ENG
Citation

IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society, v.1, pp.810 - 813

URI
http://hdl.handle.net/10203/172778
Appears in Collection
EE-Conference Papers(학술회의논문)
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