Patents by Inventor David Jew

David Jew 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).

  • Patent number: 10326366
    Abstract: A switched-mode power converter includes timing control feedback loop circuits to minimize or eliminate the potential difference across a high-power switch and a low-power switch during their transitions times. A first feedback circuit compares the measured voltage across the high-power switch at the moment the high-power switch closes with the input voltage to the high-power switch to control a low-to-high delay time. A second feedback circuit compares the measured voltage across the low-power switch at the moment the low-power switch closes with the input voltage to the low-power switch to control a high-to-low delay time. A third feedback circuit compares the measured voltage across the low-power switch at the moment the low-power switch opens. The output of the third feedback circuit is provided as inputs to the first and second feedback circuits. The third feedback circuit also controls the frequency of the power converter.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: June 18, 2019
    Assignee: Ferric Inc.
    Inventors: William Lee, David Jew, Joseph Meyer, Noah Sturcken
  • Publication number: 20190182957
    Abstract: A switched inductor DC-DC power converter chiplet includes a CMOS power switch, an LC filter, regulation circuitry, feedback control circuitry, and interface control circuitry integrated on a common substrate. The inductor for the LC filter can be formed on the same surface or on opposing surfaces of the substrate as the electrical terminations for the substrate. Another embodiment includes a switched inductor DC-DC power converter chiplet having a first powertrain phase and multiple second powertrain phases. When the load current is less than or equal to a threshold load current, the power conversion efficiency can be improved by only operating the first powertrain phase. When the load current is greater than the threshold load current, the power conversion efficiency can be improved by operating one or more second powertrain phases.
    Type: Application
    Filed: February 19, 2019
    Publication date: June 13, 2019
    Inventors: Noah Sturcken, Joseph Meyer, Michael Lekas, Ryan Davies, David Jew, William Lee
  • Patent number: 10244633
    Abstract: A switched inductor DC-DC power converter chiplet includes a CMOS power switch, an LC filter, regulation circuitry, feedback control circuitry, and interface control circuitry integrated on a common substrate. The inductor for the LC filter can be formed on the same surface or on opposing surfaces of the substrate as the electrical terminations for the substrate.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: March 26, 2019
    Assignee: Ferric Inc.
    Inventors: Noah Sturcken, David Jew, Joseph Meyer, Ryan Davies, Michael Lekas
  • Publication number: 20180145592
    Abstract: A switched-mode power converter includes timing control feedback loop circuits to minimize or eliminate the potential difference across a high-power switch and a low-power switch during their transitions times. A first feedback circuit compares the measured voltage across the high-power switch at the moment the high-power switch closes with the input voltage to the high-power switch to control a low-to-high delay time. A second feedback circuit compares the measured voltage across the low-power switch at the moment the low-power switch closes with the input voltage to the low-power switch to control a high-to-low delay time. A third feedback circuit compares the measured voltage across the low-power switch at the moment the low-power switch opens. The output of the third feedback circuit is provided as inputs to the first and second feedback circuits. The third feedback circuit also controls the frequency of the power converter.
    Type: Application
    Filed: January 12, 2018
    Publication date: May 24, 2018
    Inventors: William Lee, David Jew, Joseph Meyer, Noah Sturcken
  • Publication number: 20180110123
    Abstract: A switched inductor DC-DC power converter chiplet includes a CMOS power switch, an LC filter, regulation circuitry, feedback control circuitry, and interface control circuitry integrated on a common substrate. The inductor for the LC filter can be formed on the same surface or on opposing surfaces of the substrate as the electrical terminations for the substrate.
    Type: Application
    Filed: December 15, 2017
    Publication date: April 19, 2018
    Inventors: Noah Sturcken, David Jew, Joe Meyer, Ryan Davies, Hao Wu, Michael Lekas
  • Patent number: 9906131
    Abstract: A switched-mode power converter includes timing control feedback loop circuits to minimize or eliminate the potential difference across a high-power switch and a low-power switch during their transitions times. A first feedback circuit compares the measured voltage across the high-power switch at the moment the high-power switch closes with the input voltage to the high-power switch to control a low-to-high delay time. A second feedback circuit compares the measured voltage across the low-power switch at the moment the low-power switch closes with the input voltage to the low-power switch to control a high-to-low delay time. A third feedback circuit compares the measured voltage across the low-power switch at the moment the low-power switch opens. The output of the third feedback circuit is provided as inputs to the first and second feedback circuits. The third feedback circuit also controls the frequency of the power converter.
    Type: Grant
    Filed: August 22, 2016
    Date of Patent: February 27, 2018
    Assignee: Ferric Inc.
    Inventors: William Lee, David Jew, Joseph Meyer, Noah Sturcken
  • Publication number: 20180054118
    Abstract: A switched-mode power converter includes timing control feedback loop circuits to minimize or eliminate the potential difference across a high-power switch and a low-power switch during their transitions times. A first feedback circuit compares the measured voltage across the high-power switch at the moment the high-power switch closes with the input voltage to the high-power switch to control a low-to-high delay time. A second feedback circuit compares the measured voltage across the low-power switch at the moment the low-power switch closes with the input voltage to the low-power switch to control a high-to-low delay time. A third feedback circuit compares the measured voltage across the low-power switch at the moment the low-power switch opens. The output of the third feedback circuit is provided as inputs to the first and second feedback circuits. The third feedback circuit also controls the frequency of the power converter.
    Type: Application
    Filed: August 22, 2016
    Publication date: February 22, 2018
    Inventors: William Lee, David Jew, Joseph Meyer, Noah Sturcken
  • Patent number: 9847718
    Abstract: A DC-DC power converter includes a switched inductor power converter and a parallel linear voltage regulator. Two transistors are positioned in the switched inductor power converter to periodically set a bridge voltage thereby producing a square wave with a fixed frequency and variable duty cycle. An inductor and an output capacitor filter the bridge voltage so that only the average value of the bridge voltage is passed to the load. Parasitic impedance due to physical separation of the switched inductor power converter and the load is overcome by providing the parallel linear regulator with its own dedicated channel to the load.
    Type: Grant
    Filed: July 30, 2015
    Date of Patent: December 19, 2017
    Assignee: Ferric, Inc.
    Inventors: Noah Sturcken, David Jew, Joe Meyer
  • Publication number: 20160036330
    Abstract: A DC-DC power converter includes a switched inductor power converter and a parallel linear voltage regulator. Two transistors are positioned in the switched inductor power converter to periodically set a bridge voltage thereby producing a square wave with a fixed frequency and variable duty cycle. An inductor and an output capacitor filter the bridge voltage so that only the average value of the bridge voltage is passed to the load. Parasitic impedance due to physical separation of the switched inductor power converter and the load is overcome by providing the parallel linear regulator with its own dedicated channel to the load.
    Type: Application
    Filed: July 30, 2015
    Publication date: February 4, 2016
    Inventors: Noah Sturcken, David Jew, Joe Meyer