Patents by Inventor Scott R. TRCKA

Scott R. TRCKA 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).

  • Efficient differential charge pump with sense and common mode control
    Patent number: 10644709
    Abstract: A differential charge pump circuit for use in a phase-locked loop (PLL) circuit is disclosed. The circuit includes a reference current, two sense amplifiers, a common mode control amplifier, and an h-bridge circuit. The h-bridge circuit is coupled to the reference current and the common mode control amplifier. The reference current drives a first portion of the h-bridge circuit and the common mode control amplifier controls a second portion of the h-bridge circuit. The h-bridge circuit also includes first and second nodes. The circuit controls a voltage at the first node so that it is substantially equal to a voltage at the second node for a plurality of voltages at the second node.
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: May 5, 2020
    Assignee: International Business Machines Corporation
    Inventors: James D. Strom, Grant P. Kesselring, Ann Chen Wu, Scott R. Trcka
  • EFFICIENT DIFFERENTIAL CHARGE PUMP WITH SENSE AND COMMON MODE CONTROL
    Publication number: 20190305782
    Abstract: A differential charge pump circuit for use in a phase-locked loop (PLL) circuit is disclosed. The circuit includes a reference current, two sense amplifiers, a common mode control amplifier, and an h-bridge circuit. The h-bridge circuit is coupled to the reference current and the common mode control amplifier. The reference current drives a first portion of the h-bridge circuit and the common mode control amplifier controls a second portion of the h-bridge circuit. The h-bridge circuit also includes first and second nodes. The circuit controls a voltage at the first node so that it is substantially equal to a voltage at the second node for a plurality of voltages at the second node.
    Type: Application
    Filed: June 17, 2019
    Publication date: October 3, 2019
    Inventors: James D. STROM, Grant P. KESSELRING, Ann Chen WU, Scott R. TRCKA
  • Efficient differential charge pump with sense and common mode control
    Patent number: 10361707
    Abstract: A system and apparatus relating to a differential charge pump circuit for use in a phase-locked loop (PLL) circuit. A differential charge pump circuit can include a reference current, two sense amplifiers, a common mode control amplifier, and an h-bridge circuit. The h-bridge circuit is coupled to the reference current and the common mode control amplifier. The reference current drives a first portion of the h-bridge circuit and the common mode control amplifier controls a second portion of the h-bridge circuit. The h-bridge circuit also includes first and second nodes. The nodes are inputs to one of the sense amplifiers. The differential charge pump circuit is configured to control a voltage at the first node so that it is substantially equal to a voltage at the second node for a plurality of voltages at the second node. The differential charge pump circuit can also include a transistor with a gate coupled to an output of a sense amplifier.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: July 23, 2019
    Assignee: International Business Machines Corporation
    Inventors: James D. Strom, Grant P. Kesselring, Ann Chen Wu, Scott R. Trcka
  • EFFICIENT DIFFERENTIAL CHARGE PUMP WITH SENSE AND COMMON MODE CONTROL
    Publication number: 20190165795
    Abstract: A system and apparatus relating to a differential charge pump circuit for use in a phase-locked loop (PLL) circuit. A differential charge pump circuit can include a reference current, two sense amplifiers, a common mode control amplifier, and an h-bridge circuit. The h-bridge circuit is coupled to the reference current and the common mode control amplifier. The reference current drives a first portion of the h-bridge circuit and the common mode control amplifier controls a second portion of the h-bridge circuit. The h-bridge circuit also includes first and second nodes. The nodes are inputs to one of the sense amplifiers. The differential charge pump circuit is configured to control a voltage at the first node so that it is substantially equal to a voltage at the second node for a plurality of voltages at the second node. The differential charge pump circuit can also include a transistor with a gate coupled to an output of a sense amplifier.
    Type: Application
    Filed: November 29, 2017
    Publication date: May 30, 2019
    Inventors: James D. STROM, Grant P. KESSELRING, Ann Chen WU, Scott R. TRCKA