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Method and circuits for reducing dead time and reverse recovery loss in buck regulators

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dc.contributor.assigneeVirginia Tech Intellectual Properties, Inc.en
dc.contributor.inventorHuang, Alex Q.en
dc.contributor.inventorBai, Yumingen
dc.contributor.inventorSun, Nicken
dc.date.accessed2016-08-19en
dc.date.accessioned2016-08-24T17:54:26Zen
dc.date.available2016-08-24T17:54:26Zen
dc.date.filed2002-10-11en
dc.date.issued2004-05-18en
dc.description.abstractA buck regulator having a voltage sensor for sensing a voltage reversal caused by freewheeling current from an output inductor in the regulator. Upon sensing a reversed voltage, the voltage sensor triggers a gate controller to turn on a switch in the regulator, and thereby terminate a dead time. The voltage sensor and gate controller are high speed circuits, and therefore can reduce the duration of the dead time. Reducing the dead time duration improves efficiency by reducing the duration of body diode conduction. The dead time can be reduced to less than a turn-on time of the body diode, thereby preventing charge buildup in the body diode, and, consequently, preventing reverse recovery loss in the body diode. The present invention improves electrical conversion efficiency, and allows for increased operating frequency in buck regulators.en
dc.format.mimetypeapplication/pdfen
dc.identifier.applicationnumber10268912en
dc.identifier.patentnumber6737842en
dc.identifier.urihttp://hdl.handle.net/10919/72490en
dc.identifier.urlhttp://pimg-fpiw.uspto.gov/fdd/42/378/067/0.pdfen
dc.language.isoen_USen
dc.publisherUnited States Patent and Trademark Officeen
dc.subject.cpcH02M3/1588en
dc.subject.cpcH02M1/38en
dc.subject.cpcY02B70/1466en
dc.subject.uspc323/282en
dc.subject.uspcother323/222en
dc.subject.uspcother323/284en
dc.titleMethod and circuits for reducing dead time and reverse recovery loss in buck regulatorsen
dc.typePatenten
dc.type.dcmitypeTexten
dc.type.patenttypeutilityen

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