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Conference Paper: Design and analysis of multi-stage switched-capacitor-based step-down DC/DC converters

TitleDesign and analysis of multi-stage switched-capacitor-based step-down DC/DC converters
Authors
KeywordsCapacitors
Electric Current Control
Electromagnetic Wave Interference
Energy Transfer
Mathematical Models
State Space Methods
Voltage Control
Issue Date1998
PublisherIEEE
Citation
Pesc Record - Ieee Annual Power Electronics Specialists Conference, 1998, v. 2, p. 1655-1661 How to Cite?
AbstractA generalized multi-stage switched-capacitor (SC)-based step-down DC/DC converter is presented. It has the prominent features of continuous supply input current and better regulation capability than the classical SC converters. The problem of conducted electromagnetic interference (EMI) with the supply source is minimized. The concept of energy transfer is achieved by using two multi-stage step-down conversion cells operating in anti-phase. The d.c. voltage conversion ratio is controlled by adjusting the charging trajectories of the capacitors in each cell. As the circuit does not consist of any magnetic element, the converter has the advantages of compact size, lightweight, high power density and is possible to be fabricated in IC technology. By using the state-space averaging technique, a simplified fifth-order state-space model is developed for the analysis of the multi-stage converter. The static and the small-signal dynamic behaviors are presented. The experimental results of a prototype with rated power of 66 W, 48 V/12 V is presented.
Persistent Identifierhttp://hdl.handle.net/10722/136880
ISSN

 

DC FieldValueLanguage
dc.contributor.authorChung, Henryen_HK
dc.contributor.authorHui, SYRen_HK
dc.contributor.authorTang, SCen_HK
dc.date.accessioned2011-07-29T02:13:18Z-
dc.date.available2011-07-29T02:13:18Z-
dc.date.issued1998en_HK
dc.identifier.citationPesc Record - Ieee Annual Power Electronics Specialists Conference, 1998, v. 2, p. 1655-1661en_HK
dc.identifier.issn0275-9306en_HK
dc.identifier.urihttp://hdl.handle.net/10722/136880-
dc.description.abstractA generalized multi-stage switched-capacitor (SC)-based step-down DC/DC converter is presented. It has the prominent features of continuous supply input current and better regulation capability than the classical SC converters. The problem of conducted electromagnetic interference (EMI) with the supply source is minimized. The concept of energy transfer is achieved by using two multi-stage step-down conversion cells operating in anti-phase. The d.c. voltage conversion ratio is controlled by adjusting the charging trajectories of the capacitors in each cell. As the circuit does not consist of any magnetic element, the converter has the advantages of compact size, lightweight, high power density and is possible to be fabricated in IC technology. By using the state-space averaging technique, a simplified fifth-order state-space model is developed for the analysis of the multi-stage converter. The static and the small-signal dynamic behaviors are presented. The experimental results of a prototype with rated power of 66 W, 48 V/12 V is presented.en_HK
dc.languageengen_US
dc.publisherIEEEen_US
dc.relation.ispartofPESC Record - IEEE Annual Power Electronics Specialists Conferenceen_HK
dc.subjectCapacitorsen_US
dc.subjectElectric Current Controlen_US
dc.subjectElectromagnetic Wave Interferenceen_US
dc.subjectEnergy Transferen_US
dc.subjectMathematical Modelsen_US
dc.subjectState Space Methodsen_US
dc.subjectVoltage Controlen_US
dc.titleDesign and analysis of multi-stage switched-capacitor-based step-down DC/DC convertersen_HK
dc.typeConference_Paperen_HK
dc.identifier.emailHui, SYR:ronhui@eee.hku.hken_HK
dc.identifier.authorityHui, SYR=rp01510en_HK
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-0031624327en_HK
dc.identifier.volume2en_HK
dc.identifier.spage1655en_HK
dc.identifier.epage1661en_HK
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridChung, Henry=7404007467en_HK
dc.identifier.scopusauthoridHui, SYR=7202831744en_HK
dc.identifier.scopusauthoridTang, SC=24340444700en_HK

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