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dc.contributor.authorChao, Paul C. -P.en_US
dc.contributor.authorChen, Wei-Daren_US
dc.contributor.authorWu, Ruo-Huaen_US
dc.date.accessioned2014-12-08T15:36:30Z-
dc.date.available2014-12-08T15:36:30Z-
dc.date.issued2014-08-01en_US
dc.identifier.issn0946-7076en_US
dc.identifier.urihttp://dx.doi.org/10.1007/s00542-014-2211-yen_US
dc.identifier.urihttp://hdl.handle.net/11536/24850-
dc.description.abstractA flyback converter with digital control designed and implemented for a lithium battery charging system is proposed in this study. As opposed to the requirement of both voltage and current feedbacks for a conventional flyback converter, this study proposes a converter structure that needs only one voltage feedback to stabilize converter output for implementing the designed battery charging techniques. This single feedback of voltage is made possible by so-called "primary side regulation (PSR)", which in hardware senses the output voltage using an auxiliary winding in the isolating transformer of the flyback converter that is operated in DC-DC discontinuous current mode. The adoption of PSR also enables the elimination of the opto-coupler that is often used in conventional converters for feedback signals. Another essential part of the converter is the proposition of a new a duty control method which regulate successfully the output current by only one feedback voltage signal. The proposed battery charging design consists of three consecutive modes, trickle current (TC), CC and CV. At TC and CC, a duty control method is adopted, which is able to regulate the output current by sensing only the output voltage. Both simulation and experimental results show a 7 % error deviated from targeted output current. As for CV, a proportional-integral controller is designed and implemented to regulate the output voltage. The overall experimental results show a favorable performance of the proposed charging method with proposed PSR-flyback converter.en_US
dc.language.isoen_USen_US
dc.titleA battery charge controller realized by a flyback converter with digital primary side regulation for mobile phonesen_US
dc.typeArticleen_US
dc.identifier.doi10.1007/s00542-014-2211-yen_US
dc.identifier.journalMICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND PROCESSING SYSTEMSen_US
dc.citation.volume28en_US
dc.citation.issue8-9en_US
dc.citation.spage1689en_US
dc.citation.epage1703en_US
dc.contributor.department電機工程學系zh_TW
dc.contributor.departmentDepartment of Electrical and Computer Engineeringen_US
dc.identifier.wosnumberWOS:000339876900040-
dc.citation.woscount0-
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