Patents by Inventor Qiongna ZHANG

Qiongna ZHANG 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).

  • Overvoltage protection circuit with digital control
    Patent number: 9543752
    Abstract: A device for digitally protecting against an overvoltage event may include a front-end circuit, an overvoltage protection circuit, and a protection switch. The protection switch may be coupled to the overvoltage protection circuit and may be configured to decouple the front-end circuit from an external medium, in response to a clamp signal. The overvoltage protection circuit may be configured to detect the overvoltage event at one or more nodes of a circuit. In response to the detection of the overvoltage event, the overvoltage protection circuit may generate the clamp signal to activate the protection switch.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: January 10, 2017
    Assignee: Broadcom Corporation
    Inventors: Jan Roelof Westra, Jan Mulder, Qiongna Zhang, Jeffrey Allan Riley, Davide Vecchi
  • OVERVOLTAGE PROTECTION CIRCUIT WITH DIGITAL CONTROL
    Publication number: 20150085412
    Abstract: A device for digitally protecting against an overvoltage event may include a front-end circuit, an overvoltage protection circuit, and a protection switch. The protection switch may be coupled to the overvoltage protection circuit and may be configured to decouple the front-end circuit from an external medium, in response to a clamp signal. The overvoltage protection circuit may be configured to detect the overvoltage event at one or more nodes of a circuit. In response to the detection of the overvoltage event, the overvoltage protection circuit may generate the clamp signal to activate the protection switch.
    Type: Application
    Filed: September 30, 2013
    Publication date: March 26, 2015
    Applicant: BROADCOM CORPORATION
    Inventors: Jan Roelof WESTRA, Jan MULDER, Qiongna ZHANG, Jeffrey Allan RILEY, Davide VECCHI