Patents by Inventor Wenjun Yun

Wenjun Yun 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: 11637494
    Abstract: Current sensing in an on-die direct current-direct current (DC-DC) converter for measuring delivered power is disclosed. A DC-DC converter converts input voltage to output current at an output voltage coupled to a load circuit. The DC-DC converter includes a high side driver (HSD) circuit to drive the output current in a first stage, and a low side driver (LSD) circuit to couple the power output to a negative supply rail (GND) in a second phase, output current being periodic. The DC-DC converter includes an amplifier circuit to equalize an output voltage and a mirror voltage. Based on the mirror voltage, the current sensing circuit generates mirror current that corresponds to driver current. The mirror current can be measured as a representation of the output current delivered to the load circuit. A plurality of the DC-DC converters can provide multi-phased current to the load circuit for providing power to the load circuit.
    Type: Grant
    Filed: March 16, 2021
    Date of Patent: April 25, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Burt Lee Price, Wenjun Yun
  • Publication number: 20210203224
    Abstract: Current sensing in an on-die direct current-direct current (DC-DC) converter for measuring delivered power is disclosed. A DC-DC converter converts input voltage to output current at an output voltage coupled to a load circuit. The DC-DC converter includes a high side driver (HSD) circuit to drive the output current in a first stage, and a low side driver (LSD) circuit to couple the power output to a negative supply rail (GND) in a second phase, output current being periodic. The DC-DC converter includes an amplifier circuit to equalize an output voltage and a mirror voltage. Based on the mirror voltage, the current sensing circuit generates mirror current that corresponds to driver current. The mirror current can be measured as a representation of the output current delivered to the load circuit. A plurality of the DC-DC converters can provide multi-phased current to the load circuit for providing power to the load circuit.
    Type: Application
    Filed: March 16, 2021
    Publication date: July 1, 2021
    Inventors: Burt Lee PRICE, Wenjun YUN
  • Patent number: 10958167
    Abstract: Current sensing in an on-die direct current-direct current (DC-DC) converter for measuring delivered power is disclosed. A DC-DC converter converts input voltage to output current at an output voltage coupled to a load circuit. The DC-DC converter includes a high side driver (HSD) circuit to drive the output current in a first stage, and a low side driver (LSD) circuit to couple the power output to a negative supply rail (GND) in a second phase, output current being periodic. The DC-DC converter includes an amplifier circuit to equalize an output voltage and a mirror voltage. Based on the mirror voltage, the current sensing circuit generates mirror current that corresponds to driver current. The mirror current can be measured as a representation of the output current delivered to the load circuit. A plurality of the DC-DC converters can provide multi-phased current to the load circuit for providing power to the load circuit.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: March 23, 2021
    Assignee: Qualcomm Incorporated
    Inventors: Burt Lee Price, Wenjun Yun
  • Publication number: 20200052586
    Abstract: Current sensing in an on-die direct current-direct current (DC-DC) converter for measuring delivered power is disclosed. A DC-DC converter converts input voltage to output current at an output voltage coupled to a load circuit. The DC-DC converter includes a high side driver (HSD) circuit to drive the output current in a first stage, and a low side driver (LSD) circuit to couple the power output to a negative supply rail (GND) in a second phase, output current being periodic. The DC-DC converter includes an amplifier circuit to equalize an output voltage and a mirror voltage. Based on the mirror voltage, the current sensing circuit generates mirror current that corresponds to driver current. The mirror current can be measured as a representation of the output current delivered to the load circuit. A plurality of the DC-DC converters can provide multi-phased current to the load circuit for providing power to the load circuit.
    Type: Application
    Filed: August 8, 2018
    Publication date: February 13, 2020
    Inventors: Burt Lee Price, Wenjun Yun
  • Patent number: 10128758
    Abstract: Certain aspects of the present disclosure are directed to a multi-phase voltage converter. The multi-phase voltage converter generally includes at least two converter stages coupled to an output node of the multi-phase voltage converter. Each of the at least two converter stages generally includes a switch disposed between an input node of the multi-phase voltage converter and the output node, the switch having a first resistance, and an inductive element coupled between the switch and the output node, the inductive element having a second resistance. In certain aspects, the first resistances of the at least two converter stages match and/or the second resistances of the at least two converter stages match.
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: November 13, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Burt Price, Wenjun Yun
  • Patent number: 9614692
    Abstract: Described herein are a method and an apparatus for minimizing within-die variations in performance parameters of a processor. The apparatus comprising: a reference generator to generate an adjustable compensated reference signal; a bias generator to generate a bias signal based on the adjustable compensated reference signal; a transmitter coupled with the bias generator to transmit an output signal; and a feedback mechanism to sample the output signal from the transmitter and to provide the sampled output signal to the bias generator.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: April 4, 2017
    Assignee: Intel Corporation
    Inventors: Luke A. Johnson, Adhiveeraraghavan Srikanth, Wenjun Yun
  • Publication number: 20160191274
    Abstract: Described herein are a method and an apparatus for minimizing within-die variations in performance parameters of a processor. The apparatus comprising: a reference generator to generate an adjustable compensated reference signal; a bias generator to generate a bias signal based on the adjustable compensated reference signal; a transmitter coupled with the bias generator to transmit an output signal; and a feedback mechanism to sample the output signal from the transmitter and to provide the sampled output signal to the bias generator.
    Type: Application
    Filed: March 8, 2016
    Publication date: June 30, 2016
    Inventors: Luke A. JOHNSON, Adhiveeraraghavan SRIKANTH, Wenjun YUN
  • Patent number: 9280162
    Abstract: Described herein are a method and an apparatus for minimizing within-die variations in performance parameters of a processor. The apparatus comprising: a reference generator to generate an adjustable compensated reference signal; a bias generator to generate a bias signal based on the adjustable compensated reference signal; a transmitter coupled with the bias generator to transmit an output signal; and a feedback mechanism to sample the output signal from the transmitter and to provide the sampled output signal to the bias generator.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: March 8, 2016
    Assignee: Intel Corporation
    Inventors: Luke A. Johnson, Adhiveeraraghavan Srikanth, Wenjun Yun
  • Publication number: 20150248134
    Abstract: Described herein are a method and an apparatus for minimizing within-die variations in performance parameters of a processor. The apparatus comprising: a reference generator to generate an adjustable compensated reference signal; a bias generator to generate a bias signal based on the adjustable compensated reference signal; a transmitter coupled with the bias generator to transmit an output signal; and a feedback mechanism to sample the output signal from the transmitter and to provide the sampled output signal to the bias generator.
    Type: Application
    Filed: March 31, 2015
    Publication date: September 3, 2015
    Inventors: Luke A. JOHNSON, Adhiveeraraghavan SRIKANTH, Wenjun YUN
  • Patent number: 9009366
    Abstract: Described herein are a method and an apparatus for minimizing within-die variations in performance parameters of a processor. The apparatus comprising: a reference generator to generate an adjustable compensated reference signal; a bias generator to generate a bias signal based on the adjustable compensated reference signal; a transmitter coupled with the bias generator to transmit an output signal; and a feedback mechanism to sample the output signal from the transmitter and to provide the sampled output signal to the bias generator.
    Type: Grant
    Filed: March 25, 2014
    Date of Patent: April 14, 2015
    Assignee: Intel Corporation
    Inventors: Luke A. Johnson, Adhiveeraraghavan Srikanth, Wenjun Yun
  • Publication number: 20140258568
    Abstract: Described herein are a method and an apparatus for minimizing within-die variations in performance parameters of a processor. The apparatus comprising: a reference generator to generate an adjustable compensated reference signal; a bias generator to generate a bias signal based on the adjustable compensated reference signal; a transmitter coupled with the bias generator to transmit an output signal; and a feedback mechanism to sample the output signal from the transmitter and to provide the sampled output signal to the bias generator.
    Type: Application
    Filed: March 25, 2014
    Publication date: September 11, 2014
    Inventors: Luke A. JOHNSON, Adhiveeraraghavan SRIKANTH, Wenjun YUN
  • Patent number: 8683098
    Abstract: Described herein are a method and an apparatus for minimizing within-die variations in performance parameters of a processor. The apparatus comprising: a reference generator to generate an adjustable compensated reference signal; a bias generator to generate a bias signal based on the adjustable compensated reference signal; a transmitter coupled with the bias generator to transmit an output signal; and a feedback mechanism to sample the output signal from the transmitter and to provide the sampled output signal to the bias generator.
    Type: Grant
    Filed: March 29, 2010
    Date of Patent: March 25, 2014
    Assignee: Intel Corporation
    Inventors: Luke A. Johnson, Adhiveeraraghavan Srikanth, Wenjun Yun
  • Publication number: 20110238868
    Abstract: Described herein are a method and an apparatus for minimizing within-die variations in performance parameters of a processor. The apparatus comprising: a reference generator to generate an adjustable compensated reference signal; a bias generator to generate a bias signal based on the adjustable compensated reference signal; a transmitter coupled with the bias generator to transmit an output signal; and a feedback mechanism to sample the output signal from the transmitter and to provide the sampled output signal to the bias generator.
    Type: Application
    Filed: March 29, 2010
    Publication date: September 29, 2011
    Inventors: Luke A. Johnson, Adhiveeraraghavan Srikanth, Wenjun Yun