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    High input voltage, high efficiency, fast transient voltage regulator module (VRM)

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    6590791.pdf (561.8Kb)
    Downloads: 81
    Publication Date
    2003-07-08
    Filing Date
    1999-11-05
    Inventor
    Lee, Fred C.
    Zhou, Xunwei
    Metadata
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    Abstract
    A high input-voltage push-pull forward voltage regulator module (VRM) has high efficiency and fast transient response. The VRM has a primary side wherein two switches and two primary transformer windings are alternately connected in a loop. A capacitor is connected between any of two interleaved terminations. The remaining two terminations are connected to input and ground respectively. The two primary transformer windings have the same number of turns. A number of secondary sides may be used such as, for example, a half wave rectifier or a center tapped secondary. The high input-voltage push-pull forward VRM has high efficiency and fast transient-response with reduced filter capacitance and inductance. Its magnetic components can be easily integrated. As a result, very high power density can be achieved. The device die size needed to achieve the required efficiency is reduced. And control is simple. Therefore, this topology is very cost effective.
    Assignee
    Virginia Tech Intellectual Properties, Inc.
    Patent Number
    6590791
    Application Number
    9434514
    Source URL
    http://pimg-fpiw.uspto.gov/fdd/91/907/065/0.pdf
    Primary/U.S. Class
    363/25
    Other/U.S. Class
    363/16
    363/134
    CPC Class
    H02M3/33569
    H02M3/33576
    H02M3/33592
    Y02B70/1475
    Patent Type
    utility
    URI
    http://hdl.handle.net/10919/72473
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    • Virginia Tech Patents [685]

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