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    Multiphase voltage regulator having coupled inductors with reduced winding resistance

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    7199695.pdf (747.8Kb)
    Downloads: 70
    Publication Date
    2007-04-03
    Filing Date
    2005-10-25
    Inventor
    Lee, Fred C.
    Xu, Ming Gang
    Zhou, Jinghai
    Dong, Yan
    Metadata
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    Abstract
    A multiple phase buck converter or boost converter, or buck-boost converter has an inductor in each phase. A magnetic core with a unique woven topology provides inverse coupling between the inductors. The inductors can comprise straight conductors since the magnetic core has the woven topology wrapped around each inductor. The inductors have a reduced electrical resistance since they are straight and do not loop around the magnetic core. The reduced electrical resistance increases energy efficiency and improves transient response of the circuit. The magnetic core can comprise top and bottom portions that are magnetically connected. The inductors can comprise straight circuit board traces and the circuit board can have holes to accommodate the magnetic core.
    Assignee
    Virginia Tech Intellectual Properties, Inc.
    Patent Number
    7199695
    Application Number
    11257404
    Source URL
    http://pimg-fpiw.uspto.gov/fdd/95/996/071/0.pdf
    Primary/U.S. Class
    336/212
    Other/U.S. Class
    CPC Class
    H01F37/00
    H01F29/02
    H02M3/1584
    Patent Type
    utility
    URI
    http://hdl.handle.net/10919/72559
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    • Virginia Tech Patents [687]

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