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Circuit and method for driving synchronous rectifiers for high-frequency flyback converters

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dc.contributor.assigneeVirginia Tech Intellectual Properties, Inc.en
dc.contributor.departmentElectrical and Computer Engineeringen
dc.contributor.inventorLi, Qiangen
dc.contributor.inventorLee, Fred C.en
dc.contributor.inventorHuang, Xiuchengen
dc.date.accessed2019-02-15en
dc.date.accessioned2019-02-26T22:23:58Zen
dc.date.available2019-02-26T22:23:58Zen
dc.date.filed2016-03-30en
dc.date.issued2017-11-07en
dc.description.abstractA voltage waveform similar to a waveform of a magnetizing current of an isolation transformer and immune to high frequency oscillatory resonant behavior is developed across a capacitor of a series resistor and capacitor connection connected in parallel with a synchronous rectifier. A simple logic circuit produces a waveform for controlling the synchronous rectifier which is not subject to significant turn on delay or early turn off caused by oscillatory resonances among parasitic inductances and capacitances. Improved timing accuracy of a synchronous converter provides improved power converter accuracy, particularly for flyback converters which are commonly used in converters for supplying power to offline electrical devices but are subject to oscillatory resonant behaviors that cannot be adequately damped at switching frequencies sufficiently high to support miniaturization of adapters.en
dc.format.mimetypeapplication/pdfen
dc.identifier.applicationnumber15085012en
dc.identifier.patentnumber9812978en
dc.identifier.urihttp://hdl.handle.net/10919/87823en
dc.identifier.urlhttp://pimg-fpiw.uspto.gov/fdd/78/129/098/0.pdfen
dc.language.isoenen
dc.publisherUnited States Patent and Trademark Officeen
dc.subject.cpcH02M3/33592en
dc.subject.cpcH02M1/08en
dc.subject.cpcH02M1/44en
dc.subject.cpcH02M2001/0048en
dc.subject.cpcY02B70/1475en
dc.titleCircuit and method for driving synchronous rectifiers for high-frequency flyback convertersen
dc.typePatenten
dc.type.dcmitypeTexten
dc.type.patenttypeutilityen

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