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dc.contributor.authorYang, Shang-Hsienen_US
dc.contributor.authorTsai, Tsung-Hsunen_US
dc.contributor.authorChen, Hsinen_US
dc.contributor.authorChiu, Chao-Changen_US
dc.contributor.authorChen, Ke-Horngen_US
dc.contributor.authorLin, Ying-Hsien_US
dc.contributor.authorLin, Jian-Ruen_US
dc.contributor.authorTsai, Tsung-Yenen_US
dc.date.accessioned2018-08-21T05:53:55Z-
dc.date.available2018-08-21T05:53:55Z-
dc.date.issued2017-04-01en_US
dc.identifier.issn1549-8328en_US
dc.identifier.urihttp://dx.doi.org/10.1109/TCSI.2016.2624743en_US
dc.identifier.urihttp://hdl.handle.net/11536/145348-
dc.description.abstractIn a primary-side control flyback charger, the accuracy of a conventional knee voltage detection (KVD) approach to obtain the output voltage is influenced by the inclusion of a snubber circuit. Although the snubber circuit dampens the ringing voltages due to switching, it also affect the resonance frequency which would reduce the timing of the sampling circuit, resulting in the inaccurate sampling of output voltage. By analyzing the snubber circuit and its resonance on the primary side, this paper implements a proposed accuracy knee voltage detection (AKVD) technique to compensate for the induced resonance frequency. Furthermore, the proposed constant current (CC) regulator ensures the accuracy of CC mode by compensating the sensing current error caused by the switching delay of the power transistor. A prototype consisting of a test chip fabricated with a 0.5 mu m BCD process demonstrates a voltage accuracy exceeding 99.63%. This is achieved by mitigating abnormal detections and thus ensuring correct control of charging current throughout the charging period.en_US
dc.language.isoen_USen_US
dc.subjectBand-pass filteren_US
dc.subjectknee voltage detection (KVD) techniqueen_US
dc.subjectprimary side regulatoren_US
dc.subjectsnubber circuiten_US
dc.titleHigh Accuracy Knee Voltage Detection for Primary-Side Control in Flyback Battery Chargeren_US
dc.typeArticleen_US
dc.identifier.doi10.1109/TCSI.2016.2624743en_US
dc.identifier.journalIEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERSen_US
dc.citation.volume64en_US
dc.citation.spage1003en_US
dc.citation.epage1012en_US
dc.contributor.department工學院zh_TW
dc.contributor.departmentCollege of Engineeringen_US
dc.identifier.wosnumberWOS:000399015100022en_US
Appears in Collections:Articles