Patents by Inventor Shiliang Yuan

Shiliang Yuan 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).

  • Low loss boost converter
    Patent number: 6995547
    Abstract: The present invention relates to a low loss boost circuit used in power conversion equipment of power supplies or other power systems. It comprises controlling a duty cycle of a power switch; realizing voltage boosting and regulating of the output voltage through the energy storage in a boost inductor; reducing the reverse recovery current using an auxiliary inductor, wherein a secondary winding of the inductor supplies additional energy thereto and provides a path for transferring the energy from the auxiliary inductor to the energy storage capacitor. The present invention has high efficiency and is suitable for power converter with PFC, such as, telecommunication power supply and uninterrupted power supply.
    Type: Grant
    Filed: November 24, 2004
    Date of Patent: February 7, 2006
    Assignee: Emerson Network Power Co., Ltd.
    Inventors: Shiliang Yuan, Hua Xiang
  • Low loss boost converter
    Publication number: 20050135123
    Abstract: The present invention relates to a low loss boost circuit used in power conversion equipment of power supplies or other power systems. It comprises controlling a duty cycle of a power switch; realizing voltage boosting and regulating of the output voltage through the energy storage in a boost inductor; reducing the reverse recovery current using an auxiliary inductor, wherein a secondary winding of the inductor supplies additional energy thereto and provides a path for transferring the energy from the auxiliary inductor to the energy storage capacitor. The present invention has high efficiency and is suitable for power converter with PFC, such as, telecommunication power supply and uninterrupted power supply.
    Type: Application
    Filed: November 24, 2004
    Publication date: June 23, 2005
    Inventors: Shiliang Yuan, Hua Xiang