Virginia Tech
    • Log in
    View Item 
    •   VTechWorks Home
    • Virginia Tech Patents
    • Virginia Tech Patents
    • View Item
    •   VTechWorks Home
    • Virginia Tech Patents
    • Virginia Tech Patents
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Method and circuits for reducing dead time and reverse recovery loss in buck regulators

    Thumbnail
    View/Open
    6737842.pdf (685.8Kb)
    Downloads: 66
    Publication Date
    2004-05-18
    Filing Date
    2002-10-11
    Inventor
    Huang, Alex Q.
    Bai, Yuming
    Sun, Nick
    Metadata
    Show full item record
    Abstract
    A buck regulator having a voltage sensor for sensing a voltage reversal caused by freewheeling current from an output inductor in the regulator. Upon sensing a reversed voltage, the voltage sensor triggers a gate controller to turn on a switch in the regulator, and thereby terminate a dead time. The voltage sensor and gate controller are high speed circuits, and therefore can reduce the duration of the dead time. Reducing the dead time duration improves efficiency by reducing the duration of body diode conduction. The dead time can be reduced to less than a turn-on time of the body diode, thereby preventing charge buildup in the body diode, and, consequently, preventing reverse recovery loss in the body diode. The present invention improves electrical conversion efficiency, and allows for increased operating frequency in buck regulators.
    Assignee
    Virginia Tech Intellectual Properties, Inc.
    Patent Number
    6737842
    Application Number
    10268912
    Source URL
    http://pimg-fpiw.uspto.gov/fdd/42/378/067/0.pdf
    Primary/U.S. Class
    323/282
    Other/U.S. Class
    323/222
    323/284
    CPC Class
    H02M3/1588
    H02M1/38
    Y02B70/1466
    Patent Type
    utility
    URI
    http://hdl.handle.net/10919/72490
    Collections
    • Virginia Tech Patents [619]

    If you believe that any material in VTechWorks should be removed, please see our policy and procedure for Requesting that Material be Amended or Removed. All takedown requests will be promptly acknowledged and investigated.

    Virginia Tech | University Libraries | Contact Us
     

     

    VTechWorks

    AboutPoliciesHelp

    Browse

    All of VTechWorksCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    My Account

    Log inRegister

    Statistics

    View Usage Statistics

    If you believe that any material in VTechWorks should be removed, please see our policy and procedure for Requesting that Material be Amended or Removed. All takedown requests will be promptly acknowledged and investigated.

    Virginia Tech | University Libraries | Contact Us