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Conference Paper: Studies of self-driven synchronous rectification in low voltage power conversion
Title | Studies of self-driven synchronous rectification in low voltage power conversion |
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Authors | |
Issue Date | 1999 |
Citation | Proceedings Of The International Conference On Power Electronics And Drive Systems, 1999, v. 1, p. 212-217 How to Cite? |
Abstract | In self-driven synchronous rectification circuit, transformer secondary winding is often used directly to drive synchronous MOSFETs. Transformer leakage inductance and other parasitic inductance in rectification loop are found contributing to rectification loss. Body diode of synchronous rectifiers is on during current commutation in two SRs because reflected secondary voltage falls on these parasitic inductance instead of gate terminal of SR in this duration. Body diode turn on greatly degrades the performance of SR. The case is worse in high frequency, high current applications. Detailed analysis of this phenomenon is given in the paper. An equivalent model is established to analyze and evaluate the performance of SR with the existence of parasitic inductance. Simulation and experiment waveforms confirm the model and analysis. Additionally, optimal driving waveforms for SRs are discussed. Two improved gate drive methods are presented and compared. |
Persistent Identifier | http://hdl.handle.net/10722/98834 |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Xie, Xuefei | en_HK |
dc.contributor.author | Chung, Hok Yan | en_HK |
dc.contributor.author | Pong, MH | en_HK |
dc.date.accessioned | 2010-09-25T18:04:13Z | - |
dc.date.available | 2010-09-25T18:04:13Z | - |
dc.date.issued | 1999 | en_HK |
dc.identifier.citation | Proceedings Of The International Conference On Power Electronics And Drive Systems, 1999, v. 1, p. 212-217 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/98834 | - |
dc.description.abstract | In self-driven synchronous rectification circuit, transformer secondary winding is often used directly to drive synchronous MOSFETs. Transformer leakage inductance and other parasitic inductance in rectification loop are found contributing to rectification loss. Body diode of synchronous rectifiers is on during current commutation in two SRs because reflected secondary voltage falls on these parasitic inductance instead of gate terminal of SR in this duration. Body diode turn on greatly degrades the performance of SR. The case is worse in high frequency, high current applications. Detailed analysis of this phenomenon is given in the paper. An equivalent model is established to analyze and evaluate the performance of SR with the existence of parasitic inductance. Simulation and experiment waveforms confirm the model and analysis. Additionally, optimal driving waveforms for SRs are discussed. Two improved gate drive methods are presented and compared. | en_HK |
dc.language | eng | en_HK |
dc.relation.ispartof | Proceedings of the International Conference on Power Electronics and Drive Systems | en_HK |
dc.title | Studies of self-driven synchronous rectification in low voltage power conversion | en_HK |
dc.type | Conference_Paper | en_HK |
dc.identifier.email | Pong, MH:mhp@eee.hku.hk | en_HK |
dc.identifier.authority | Pong, MH=rp00163 | en_HK |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.scopus | eid_2-s2.0-0033317250 | en_HK |
dc.identifier.hkuros | 52474 | en_HK |
dc.identifier.volume | 1 | en_HK |
dc.identifier.spage | 212 | en_HK |
dc.identifier.epage | 217 | en_HK |
dc.identifier.scopusauthorid | Xie, Xuefei=7402761978 | en_HK |
dc.identifier.scopusauthorid | Chung, Hok Yan=7404006643 | en_HK |
dc.identifier.scopusauthorid | Pong, MH=7003449364 | en_HK |