Patents by Inventor Shi-Hai Zhu

Shi-Hai Zhu 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 power non-isolated driver
    Patent number: 8072160
    Abstract: The present invention mainly discloses low power non-isolated driver that can be used for LED lighting and other non-isolated power supply appliance, in which the input side is connected to an AC or DC input, a PWM control circuit is connected to the buck converter switch, a capacitor filters the output voltage ripple and an output voltage/current control circuit provides feedback signal to the PWM control circuit. The present invention has such features of less component number, low total cost, high reliability, and better line/load regulation.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: December 6, 2011
    Assignee: BCD Semiconductor Manufacturing Limited
    Inventors: Chao-Qun Sun, Shi-Hai Zhu
  • LOW POWER NON-ISOLATED DRIVER
    Publication number: 20100156322
    Abstract: The present invention mainly discloses low power non-isolated driver that can be used for LED lighting and other non-isolated power supply appliance, in which the input side is connected to an AC or DC input, a PWM control circuit is connected to the buck converter switch, a capacitor filters the output voltage ripple and an output voltage/current control circuit provides feedback signal to the PWM control circuit. The present invention has such features of less component number, low total cost, high reliability, and better line/load regulation.
    Type: Application
    Filed: December 22, 2008
    Publication date: June 24, 2010
    Inventors: Chao-Qun SUN, Shi-Hai Zhu