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    Multiphase clamp coupled-buck converter and magnetic integration

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    6784644.pdf (1.661Mb)
    Downloads: 90
    Publication Date
    2004-08-31
    Filing Date
    2002-02-22
    Inventor
    Lee, Fred C.
    Wei, Jia
    Xu, Peng
    Yao, Kaiwei
    Ye, Mao
    Metadata
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    Abstract
    Voltage regulation, transient response and efficiency of a voltage regulator module (VRM) is improved where short duty cycles are necessitated by large differentials of input and output voltage by including at least one clamping of a tap of an inductance in series with an output of each of a plurality of parallel branches or phases which are switched in a complementary fashion or providing coupling between inductors of respective phases. Such coupling between inductors is achieved in a small module with an integrated magnetic structure. Reduced component counts are achieved while deriving built-in input and output filters. Principals of the invention can be extended to isolation applications and push-pull forward converts, in particular. A lossless clamping circuit is also provided allowing spike currents to be suppressed while returning power to the output of the VRM.
    Assignee
    Virginia Tech Intellectual Properties, Inc.
    Patent Number
    6784644
    Application Number
    10079819
    Source URL
    http://pimg-fpiw.uspto.gov/fdd/44/846/067/0.pdf
    Primary/U.S. Class
    323/225
    Other/U.S. Class
    323/255
    323/259
    363/56.12
    CPC Class
    H02M3/158
    H02M3/1584
    H02M2001/0064
    Patent Type
    utility
    URI
    http://hdl.handle.net/10919/72497
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