Patents by Inventor BAHMAN YOUSEFZADEH

BAHMAN YOUSEFZADEH 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).

  • Heater-assisted voltage calibration of digital temperature sensors
    Patent number: 10605676
    Abstract: A method includes: calculating a first calibration temperature based on a first ratio of a known external voltage to a delta voltage that is a difference between first and second base-emitter voltages of first and second sensing transistors, calculating a first sensed temperature based on a second ratio of the first base-emitter voltage to the delta voltage, adjusting one or more temperature fitting parameters based on a comparison of the first sensed temperature with the first calibration temperature; activating the on-chip heater; calculating a second calibration temperature based, at least in part, on a third ratio of the known external voltage to the delta voltage, calculating a second sensed temperature based on a fourth ratio of the first base-emitter voltage to the delta voltage, adjusting at least one of the one or more temperature fitting parameters based on a comparison of the second sensed temperature with the second calibration temperature.
    Type: Grant
    Filed: February 2, 2017
    Date of Patent: March 31, 2020
    Assignee: NXP B.V.
    Inventors: Bahman Yousefzadeh, Kamran Souri, Kofi A. A. Makinwa
  • HEATER-ASSISTED VOLTAGE CALIBRATION OF DIGITAL TEMPERATURE SENSORS
    Publication number: 20180217009
    Abstract: A method includes: calculating a first calibration temperature based on a first ratio of a known external voltage to a delta voltage that is a difference between first and second base-emitter voltages of first and second sensing transistors, calculating a first sensed temperature based on a second ratio of the first base-emitter voltage to the delta voltage, adjusting one or more temperature fitting parameters based on a comparison of the first sensed temperature with the first calibration temperature; activating the on-chip heater; calculating a second calibration temperature based, at least in part, on a third ratio of the known external voltage to the delta voltage, calculating a second sensed temperature based on a fourth ratio of the first base-emitter voltage to the delta voltage, adjusting at least one of the one or more temperature fitting parameters based on a comparison of the second sensed temperature with the second calibration temperature.
    Type: Application
    Filed: February 2, 2017
    Publication date: August 2, 2018
    Inventors: BAHMAN YOUSEFZADEH, KAMRAN SOURI, KOFI A. A. MAKINWA