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    Start-up circuit and control for high power isolated boost DC/DC converters

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    6587356.pdf (708.3Kb)
    Downloads: 157
    Publication Date
    2003-07-01
    Filing Date
    2001-05-24
    Inventor
    Lee, Fred C.
    Zhu, Lizhi
    Lai, Jin-Sheng
    Metadata
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    Abstract
    The invention is a scheme for high power isolated full-bridge boost DC/DC converters to minimize the effect of in-rush current during start-up. A single pulse width modulation controller (PWM) is possible for the present invention for not only start-up but also normal boost modes. A primary circuit can have a clamping switch or at least two choke diodes. The choke diode can include “push-pull” and “L”-type configurations. A resistor can be used to dissipate energy clamped from the voltage spike. A startup circuit can be used to eliminate the in-rush current experienced during start-up. The proposed start-up schemes have been experimentally verified using a 1.6 kW, 12V/288 V prototype. Since the present invention eliminates the need to match characteristics of multiple controllers, it significantly reduces the cost associated with implementing this type of technology.
    Assignee
    Virginia Tech Intellectual Properties, Inc.
    Patent Number
    6587356
    Application Number
    9866304
    Source URL
    http://pimg-fpiw.uspto.gov/fdd/56/873/065/0.pdf
    Primary/U.S. Class
    323/908
    Other/U.S. Class
    363/17
    363/49
    363/56.2
    363/56.5
    CPC Class
    H02M1/34
    H02M3/3376
    H02M2001/342
    Y02B70/1491
    Y10S323/908
    Patent Type
    utility
    URI
    http://hdl.handle.net/10919/72472
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    • Virginia Tech Patents [685]

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