Patents by Inventor Ralph J. Johnson, III

Ralph J. Johnson, III 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).

  • Systems and methods for measuring power system current using OR-ing MOSFETs
    Patent number: 9621047
    Abstract: In accordance with embodiments of the present disclosure, a power supply unit may include one or more stages including an output stage configured to generate a direct-current output voltage at an output of the power supply, an OR-ing metal-oxide-semiconductor field effect transistor (MOSFET) coupled between the output stage and the output, and a controller. The controller may be configured to measure a signal indicative of a voltage associated with the OR-ing MOSFET and determine an estimated output current of the power supply based on the signal.
    Type: Grant
    Filed: October 10, 2014
    Date of Patent: April 11, 2017
    Assignee: Dell Products L.P.
    Inventors: Ralph J. Johnson, III, Shiguo Luo, Wayne Kenneth Cook, Mehran Mirjafari, Hang Li, Kejiu Zhang, Lei Wang
  • SYSTEMS AND METHODS FOR MEASURING POWER SYSTEM CURRENT USING OR-ING MOSFETS
    Publication number: 20160105101
    Abstract: In accordance with embodiments of the present disclosure, a power supply unit may include one or more stages including an output stage configured to generate a direct-current output voltage at an output of the power supply, an OR-ing metal-oxide-semiconductor field effect transistor (MOSFET) coupled between the output stage and the output, and a controller. The controller may be configured to measure a signal indicative of a voltage associated with the OR-ing MOSFET and determine an estimated output current of the power supply based on the signal.
    Type: Application
    Filed: October 10, 2014
    Publication date: April 14, 2016
    Inventors: Ralph J. Johnson, III, Shiguo Luo, Wayne Kenneth Cook, Mehran Mirjafari, Hang Li, Kejiu Zhang, Lei Wang