Patents by Inventor Kejiu Zhang

Kejiu 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).

  • Publication number: 20150113294
    Abstract: A voltage regulator may comprise a high-side switch and a low-side switch for delivering electrical current to the at least one information handling resource, a high-side driver configured to drive a high-side driving voltage for regulating a first electrical current of the high-side switch, a low-side driver configured to drive a low-side driving voltage for regulating a second electrical current of the low-side switch, and a control circuit configured to operate the at least one voltage regulator in both of a fixed dead time mode and an adaptive dead time mode.
    Type: Application
    Filed: October 22, 2013
    Publication date: April 23, 2015
    Applicant: Dell Products L.P.
    Inventors: Kejiu Zhang, Shiguo Luo, Hang Li
  • Patent number: 8917074
    Abstract: A voltage regulator that includes a high-side and a low-side power transistor is implemented where the high-side and the low-side power transistors are operable to output power to a transient load. The voltage regulator further includes control circuitry coupled to the high-side low-side power transistors and the transient load, with the control circuitry operable to receive a control signal from the transient load or the system. The control signal may correspond to an operating voltage of the transient load. In response to a decrease in a power level, the control circuitry may turn off the high-side power transistor, turn on the low-side power transistor a first duration, and turn off the low-side power transistor for a second duration. The first duration and the second duration may be based, at least in part, on the operating voltage.
    Type: Grant
    Filed: October 26, 2011
    Date of Patent: December 23, 2014
    Assignee: Dell Products L.P.
    Inventors: Shiguo Luo, John Breen, Kejiu Zhang
  • Publication number: 20130106373
    Abstract: The present application is directed to a voltage regulator including a high-side and a low-side power transistor. The high-side and the low-side power transistors are operable to output power to a transient load. The voltage regulator further includes control circuitry coupled to the high-side low-side power transistors and the transient load, with the control circuitry operable to receive a control signal from the transient load or the system. The control signal may correspond to an operating voltage of the transient load. In response to a decrease in a power level, the control circuitry may turn off the high-side power transistor, turn on the low-side power transistor a first duration, and turn off the low-side power transistor for a second duration. The first duration and the second duration may be based, at least in part, on the operating voltage.
    Type: Application
    Filed: October 26, 2011
    Publication date: May 2, 2013
    Inventors: Shiguo Luo, John Breen, Kejiu Zhang