Patents by Inventor Collin Philip WELLS

Collin Philip WELLS 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).

  • Multi-string LED current balancing circuit with fault detection
    Patent number: 11849516
    Abstract: A lighting device circuit comprising: a reference LED string, a mirror LED string coupled in parallel to the reference LED string, an operational amplifier based current mirror circuit coupled to the reference LED string and to the mirror LED string, and a window comparator circuit that includes only a single input that is coupled to a fault sense node. The fault sense node directly connects to a drain node of a transistor within the operational amplifier based current mirror and a LED within the mirror LED string.
    Type: Grant
    Filed: July 25, 2022
    Date of Patent: December 19, 2023
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Garrett Warren Satterfield, Collin Philip Wells
  • MULTI-STRING LED CURRENT BALANCING CIRCUIT WITH FAULT DETECTION
    Publication number: 20220361303
    Abstract: A lighting device circuit comprising: a reference LED string, a mirror LED string coupled in parallel to the reference LED string, an operational amplifier based current mirror circuit coupled to the reference LED string and to the mirror LED string, and a window comparator circuit that includes only a single input that is coupled to a fault sense node. The fault sense node directly connects to a drain node of a transistor within the operational amplifier based current mirror and a LED within the mirror LED string.
    Type: Application
    Filed: July 25, 2022
    Publication date: November 10, 2022
    Inventors: Garrett Warren SATTERFIELD, Collin Philip WELLS
  • Multi-string LED current balancing circuit with fault detection
    Patent number: 11438983
    Abstract: A lighting device circuit comprising: a reference LED string, a mirror LED string coupled in parallel to the reference LED string, an operational amplifier based current mirror circuit coupled to the reference LED string and to the mirror LED string, and a window comparator circuit that includes only a single input that is coupled to a fault sense node. The fault sense node directly connects to a drain node of a transistor within the operational amplifier based current mirror and a LED within the mirror LED string.
    Type: Grant
    Filed: October 15, 2020
    Date of Patent: September 6, 2022
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Garrett Warren Satterfield, Collin Philip Wells
  • MULTI-STRING LED CURRENT BALANCING CIRCUIT WITH FAULT DETECTION
    Publication number: 20210029801
    Abstract: A lighting device circuit comprising: a reference LED string, a mirror LED string coupled in parallel to the reference LED string, an operational amplifier based current mirror circuit coupled to the reference LED string and to the mirror LED string, and a window comparator circuit that includes only a single input that is coupled to a fault sense node. The fault sense node directly connects to a drain node of a transistor within the operational amplifier based current mirror and a LED within the mirror LED string.
    Type: Application
    Filed: October 15, 2020
    Publication date: January 28, 2021
    Inventors: Garrett Warren SATTERFIELD, Collin Philip WELLS
  • Multi-string LED current balancing circuit with fault detection
    Patent number: 10849203
    Abstract: A lighting device circuit comprising: a reference LED string, a mirror LED string coupled in parallel to the reference LED string, an operational amplifier based current mirror circuit coupled to the reference LED string and to the mirror LED string, and a window comparator circuit that includes only a single input that is coupled to a fault sense node. The fault sense node directly connects to a drain node of a transistor within the operational amplifier based current mirror and a LED within the mirror LED string.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: November 24, 2020
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Garrett Warren Satterfield, Collin Philip Wells
  • MULTI-STRING LED CURRENT BALANCING CIRCUIT WITH FAULT DETECTION
    Publication number: 20190208589
    Abstract: A lighting device circuit comprising: a reference LED string, a mirror LED string coupled in parallel to the reference LED string, an operational amplifier based current mirror circuit coupled to the reference LED string and to the mirror LED string, and a window comparator circuit that includes only a single input that is coupled to a fault sense node. The fault sense node directly connects to a drain node of a transistor within the operational amplifier based current mirror and a LED within the mirror LED string.
    Type: Application
    Filed: March 30, 2018
    Publication date: July 4, 2019
    Inventors: Garrett Warren SATTERFIELD, Collin Philip WELLS