Patents by Inventor Kris Y. Kao

Kris Y. Kao has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Power converter employing a tapped inductor and integrated magnetics and method of operating the same
    Patent number: 7876191
    Abstract: A power converter employing a magnetic device including a magnetic core and first and second tapped windings. Each winding of the magnetic device has first and second winding sections, respectively, coupled to the magnetic core, wherein the first and second winding sections are formed from a formed and folded planar conductive sheet. The magnetic core includes a common leg, a plurality of outer legs, and a top plate. The first and second winding sections are constructed with a formed and folded planar conductive sheet formed with structures usable as pins in a through-hole, surface-mount, or combined printed wiring board assembly process. The outer legs at either end of the magnetic core are positioned back from magnetic core ends, and the magnetic core is formed with a stepped structure to accommodate winding pins in a surface-mount printed wiring board assembly process.
    Type: Grant
    Filed: November 19, 2007
    Date of Patent: January 25, 2011
    Assignee: Flextronics International USA, Inc.
    Inventors: Sriram Chandrasekaran, Kris Y. Kao, Jun Zhang
  • Power Converter Employing a Tapped Inductor and Integrated Magnetics and Method of Operating the Same
    Publication number: 20080150666
    Abstract: A power converter employing a magnetic device including a magnetic core and first and second tapped windings. Each winding of the magnetic device has first and second winding sections, respectively, coupled to the magnetic core, wherein the first and second winding sections are formed from a formed and folded planar conductive sheet. The magnetic core includes a common leg, a plurality of outer legs, and a top plate. The first and second winding sections are constructed with a formed and folded planar conductive sheet formed with structures usable as pins in a through-hole, surface-mount, or combined printed wiring board assembly process. The outer legs at either end of the magnetic core are positioned back from magnetic core ends, and the magnetic core is formed with a stepped structure to accommodate winding pins in a surface-mount printed wiring board assembly process.
    Type: Application
    Filed: November 19, 2007
    Publication date: June 26, 2008
    Inventors: Sriram Chandrasekaran, Kris Y. Kao, Jun Zhang