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Conference Paper: Voltage-Driven Synchronous Rectification in Forward Topology

TitleVoltage-Driven Synchronous Rectification in Forward Topology
Authors
Issue Date2000
PublisherIEEE.
Citation
The 3rd International Power Electronics and Motion Control Conference (IPEMC 2000), Beijing, China, 15-18 August 2000 How to Cite?
AbstractThe self-driven synchronous rectification (SDSR) forward topology is widely used in offline low voltage DC-DC power conversion. The major disadvantage of the SDSR forward topology is the conduction of the SR body diode when transformer reset process is over. SR body diode conduction brings excessive loss due to its high forward drop and poor reverse recovery characteristic. In this paper, a new SR drive mechanism is proposed. This drive method effectively prevents the body diode of SR from conduction with a coupled winding and several low power switches. Theoretical analysis and experimental results are shown. A 250 kHz, 48 V input, 5 V/10 A output low profile DC-DC module is designed to verify the proposed idea. 92.3% efficiency is achieved at full load typical line.
Persistent Identifierhttp://hdl.handle.net/10722/99177
ISBN

 

DC FieldValueLanguage
dc.contributor.authorXie, Xen_HK
dc.contributor.authorLiu, CPen_HK
dc.contributor.authorPoon, FNKen_HK
dc.contributor.authorPong, MHen_HK
dc.date.accessioned2010-09-25T18:18:58Z-
dc.date.available2010-09-25T18:18:58Z-
dc.date.issued2000en_HK
dc.identifier.citationThe 3rd International Power Electronics and Motion Control Conference (IPEMC 2000), Beijing, China, 15-18 August 2000-
dc.identifier.isbn7-80003-464-X-
dc.identifier.urihttp://hdl.handle.net/10722/99177-
dc.description.abstractThe self-driven synchronous rectification (SDSR) forward topology is widely used in offline low voltage DC-DC power conversion. The major disadvantage of the SDSR forward topology is the conduction of the SR body diode when transformer reset process is over. SR body diode conduction brings excessive loss due to its high forward drop and poor reverse recovery characteristic. In this paper, a new SR drive mechanism is proposed. This drive method effectively prevents the body diode of SR from conduction with a coupled winding and several low power switches. Theoretical analysis and experimental results are shown. A 250 kHz, 48 V input, 5 V/10 A output low profile DC-DC module is designed to verify the proposed idea. 92.3% efficiency is achieved at full load typical line.-
dc.languageengen_HK
dc.publisherIEEE.en_HK
dc.relation.ispartofConference Proceedings of IPEMC 2000en_HK
dc.titleVoltage-Driven Synchronous Rectification in Forward Topologyen_HK
dc.typeConference_Paperen_HK
dc.identifier.emailLiu, CP: cpliu@eee.hku.hken_HK
dc.identifier.emailPoon, FNK: nkpoon@eee.hku.hken_HK
dc.identifier.emailPong, MH: mhp@eee.hku.hken_HK
dc.identifier.authorityPong, MH=rp00163en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1109/IPEMC.2000.885338-
dc.identifier.hkuros60465en_HK

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