Two-stage multichannel LED driver with CLL resonant circuit

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dc.contributor.assigneeVirginia Tech Intellectual Properties, Inc.en
dc.contributor.departmentElectrical and Computer Engineeringen
dc.contributor.departmentCenter for Power Electronics Systemsen
dc.contributor.inventorLi, Qiangen
dc.contributor.inventorLee, Fred C.en
dc.contributor.inventorChen, Xuebingen
dc.contributor.inventorHuang, Daochengen
dc.date.accessed2019-02-15en
dc.date.accessioned2019-02-26T22:24:07Zen
dc.date.available2019-02-26T22:24:07Zen
dc.date.filed2015-02-23en
dc.date.issued2017-01-10en
dc.description.abstractIn a two-stage power converter providing voltage regulation in a first stage, zero voltage switching (ZVS) is provided in switches in an unregulated, constant frequency second stage of a two-stage power converter by an inductor of a CLL resonant circuit connected in parallel with both a series connection of an external inductor and a primary winding of one or more transformers connected in series and an output of the switching circuit so that the output capacitances of the switches can be charged and discharged, respectively, by current in the parallel-connected inductor and independently of current in the magnetizing inductance of the transformer. Therefore, the magnetizing inductance of the transformer can be made sufficiently large to balance currents delivered to respective loads as is particularly desirable for driving a plurality of unbalanced LED strings independently of the value of the parallel-connected inductor which is desirably small.en
dc.format.mimetypeapplication/pdfen
dc.identifier.applicationnumber14628372en
dc.identifier.patentnumber9544956en
dc.identifier.urihttp://hdl.handle.net/10919/87859en
dc.identifier.urlhttp://pimg-fpiw.uspto.gov/fdd/56/449/095/0.pdfen
dc.language.isoenen
dc.publisherUnited States Patent and Trademark Officeen
dc.subject.cpcH05B33/0815en
dc.subject.cpcH05B33/0851en
dc.titleTwo-stage multichannel LED driver with CLL resonant circuiten
dc.typePatenten
dc.type.dcmitypeTexten
dc.type.patenttypeutilityen

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