Patents by Inventor Matthew R. Powell

Matthew R. Powell 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: 9983643
    Abstract: An integrated circuit includes: a voltage converter to receive a first supply voltage signal via a first power path and to output a first output voltage signal; and a voltage regulator to receive the first output voltage signal and to output a regulated voltage signal. The voltage regulator may further be configured to receive the first supply voltage signal via a second power path, and to selectively output the regulated voltage signal from one of the first supply voltage signal and the first output voltage signal.
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: May 29, 2018
    Assignee: Silicon Laboratories Inc.
    Inventor: Matthew R. Powell
  • Publication number: 20170063229
    Abstract: An integrated circuit includes: a voltage converter to receive a first supply voltage signal via a first power path and to output a first output voltage signal; and a voltage regulator to receive the first output voltage signal and to output a regulated voltage signal. The voltage regulator may further be configured to receive the first supply voltage signal via a second power path, and to selectively output the regulated voltage signal from one of the first supply voltage signal and the first output voltage signal.
    Type: Application
    Filed: September 1, 2015
    Publication date: March 2, 2017
    Inventor: Matthew R. Powell
  • Patent number: 9576679
    Abstract: A circuit may include a first sample node configured to provide a low precision sample of an input signal, a second sample node configured to store a high precision sample of an input signal, and a first switch circuit coupled between an input and the first sample node. The circuit may further include a second switch circuit coupled between the first sample node and the second sample node and configured to limit leakage current that could discharge the second sample node.
    Type: Grant
    Filed: October 9, 2014
    Date of Patent: February 21, 2017
    Assignee: Silicon Laboratories Inc.
    Inventors: Matthew R Powell, Shouli Yan
  • Patent number: 9553572
    Abstract: A self clocking comparator for clocking a charge pump providing a high voltage output including multiple gain stages and a reset circuit. The gain stages are configured to assert the compare voltage at a first voltage level in a default state when the sense voltage is greater than the reference voltage, and to assert the compare voltage to a second voltage level in a reset state when the sense voltage falls below the reference voltage. The reset circuit resets, or otherwise forces, the gain stages back to the default state in response to the compare voltage transitioning to the second voltage level. The compare voltage oscillates while the sense voltage is less than the reference voltage at a frequency based on a magnitude of a difference between the sense voltage and the reference voltage up to a predetermined maximum frequency level.
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: January 24, 2017
    Assignee: SILICON LABORATORIES INC.
    Inventor: Matthew R. Powell
  • Patent number: 9438165
    Abstract: A method includes using a current source to provide a charging current to a capacitor of a resistor-capacitor (RC) tank of an RC oscillator. The method includes using a resistor of the current source as a resistor for the RC tank.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: September 6, 2016
    Assignee: Silicon Laboratories Inc.
    Inventors: Matthew R. Powell, Axel Thomsen, Nicholas M. Atkinson
  • Publication number: 20160142046
    Abstract: A self clocking comparator for clocking a charge pump providing a high voltage output including multiple gain stages and a reset circuit. The gain stages are configured to assert the compare voltage at a first voltage level in a default state when the sense voltage is greater than the reference voltage, and to assert the compare voltage to a second voltage level in a reset state when the sense voltage falls below the reference voltage. The reset circuit resets, or otherwise forces, the gain stages back to the default state in response to the compare voltage transitioning to the second voltage level. The compare voltage oscillates while the sense voltage is less than the reference voltage at a frequency based on a magnitude of a difference between the sense voltage and the reference voltage up to a predetermined maximum frequency level.
    Type: Application
    Filed: November 18, 2014
    Publication date: May 19, 2016
    Inventor: MATTHEW R. POWELL
  • Publication number: 20160104543
    Abstract: A circuit may include a first sample node configured to provide a low precision sample of an input signal, a second sample node configured to store a high precision sample of an input signal, and a first switch circuit coupled between an input and the first sample node. The circuit may further include a second switch circuit coupled between the first sample node and the second sample node and configured to limit leakage current that could discharge the second sample node.
    Type: Application
    Filed: October 9, 2014
    Publication date: April 14, 2016
    Applicant: Silicon Laboratories Inc.
    Inventors: Matthew R. Powell, Shouli Yan
  • Publication number: 20160105148
    Abstract: A method includes using a current source to provide a charging current to a capacitor of a resistor-capacitor (RC) tank of an RC oscillator. The method includes using a resistor of the current source as a resistor for the RC tank.
    Type: Application
    Filed: October 8, 2014
    Publication date: April 14, 2016
    Inventors: Matthew R. Powell, Axel Thomsen, Nicholas M. Atkinson
  • Publication number: 20040010086
    Abstract: The present invention provides a TPO blend that exhibits surprisingly excellent low temperature impact resistance. The TPO blend according to the invention includes a polyolefin, a metallocene catalyzed olefinic copolymer plastomer and a lubricant package. The lubricant package includes a mixture of an internal lubricant and an external lubricant. In the preferred embodiment of the invention the polyolefin is polypropylene, the metallocene catalyzed olefinic copolymer is a metallocene catalyzed low density ethylene-octene copolymer, and the lubricant package includes a blend of ethylene bis-stearamide wax as an external lubricant and calcium stearate wax as an internal lubricant. The TPO blend according to the invention also preferably comprises optional antioxidants, UV stabilizers, and colorants.
    Type: Application
    Filed: July 12, 2002
    Publication date: January 15, 2004
    Inventors: Deenadayalu Chundury, Roy C. Sanford, Matthew R. Powell, Larry N. Trotter