Patents by Inventor Chiteh Chiang

Chiteh Chiang 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: 10332827
    Abstract: Various applications of interconnect substrates in power management systems are described.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: June 25, 2019
    Assignee: Volterra Semiconductor Corporation
    Inventors: Mihalis Michael, Kwang Hong Tan, Ilija Jergovic, Chiteh Chiang, Anthony J. Stratakos
  • Patent number: 10284072
    Abstract: A voltage regulator includes a high-side device, a low-side device, and a controller. The high-side device includes first and second transistors each coupled between an input terminal and an intermediate terminal, where the first transistor has a higher breakdown voltage than the second transistor. The low-side device is coupled between the intermediate terminal and a ground terminal. The controller is configured to drive the high-side and low-side devices to (a) alternately couple the intermediate terminal to the input terminal and the ground terminal and (b) cause the first transistor to control a voltage across the second transistor during switching transitions of the second transistor.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: May 7, 2019
    Assignee: Volterra Semiconductor LLC
    Inventors: Marco A. Zuniga, Chiteh Chiang, Yang Lu, Badredin Fatemizadeh, Amit Paul, Jun Ruan, Craig Cassella
  • Patent number: 10243467
    Abstract: The subject matter of this document can be embodied in a method that includes a voltage regulator having an input terminal and an output terminal. The voltage regulator includes a high-side transistor between the input terminal and an intermediate terminal, and a low-side transistor between the intermediate terminal and ground. The voltage regulator includes a low-side driver circuit including a capacitor and an inverter. The output of the inverter is connected to the gate of the low-side transistor. The voltage regulator also includes a controller that drives the high-side and low-side transistors to alternately couple the intermediate terminal to the input terminal and ground. The controller is configured to drive the low-side transistor by controlling the inverter. The voltage regulator further includes a switch coupled to the low-side driver circuit. The switch is configured to block charge leakage out of the capacitor during an off state of the low-side transistor.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: March 26, 2019
    Assignee: Volterra Semiconductor LLC
    Inventors: Chiteh Chiang, Marco A. Zuniga, Yang Lu
  • Publication number: 20180109192
    Abstract: The subject matter of this document can be embodied in a method that includes a voltage regulator having an input terminal and an output terminal. The voltage regulator includes a high-side transistor between the input terminal and an intermediate terminal, and a low-side transistor between the intermediate terminal and ground. The voltage regulator includes a low-side driver circuit including a capacitor and an inverter. The output of the inverter is connected to the gate of the low-side transistor. The voltage regulator also includes a controller that drives the high-side and low-side transistors to alternately couple the intermediate terminal to the input terminal and ground. The controller is configured to drive the low-side transistor by controlling the inverter. The voltage regulator further includes a switch coupled to the low-side driver circuit. The switch is configured to block charge leakage out of the capacitor during an off state of the low-side transistor.
    Type: Application
    Filed: December 18, 2017
    Publication date: April 19, 2018
    Inventors: Chiteh Chiang, Marco A. Zuniga, Yang Lu
  • Patent number: 9847722
    Abstract: The subject matter of this document can be embodied in a method that includes a voltage regulator having an input terminal and an output terminal. The voltage regulator includes a high-side transistor between the input terminal and an intermediate terminal, and a low-side transistor between the intermediate terminal and ground. The voltage regulator includes a low-side driver circuit including a capacitor and an inverter. The output of the inverter is connected to the gate of the low-side transistor. The voltage regulator also includes a controller that drives the high-side and low-side transistors to alternately couple the intermediate terminal to the input terminal and ground. The controller is configured to drive the low-side transistor by controlling the inverter. The voltage regulator further includes a switch coupled to the low-side driver circuit. The switch is configured to block charge leakage out of the capacitor during an off state of the low-side transistor.
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: December 19, 2017
    Assignee: Volterra Semiconductor LLC
    Inventors: Chiteh Chiang, Marco A. Zuniga, Yang Lu
  • Publication number: 20170338731
    Abstract: A voltage regulator includes a high-side device, a low-side device, and a controller. The high-side device includes first and second transistors each coupled between an input terminal and an intermediate terminal, where the first transistor has a higher breakdown voltage than the second transistor. The low-side device is coupled between the intermediate terminal and a ground terminal. The controller is configured to drive the high-side and low-side devices to (a) alternately couple the intermediate terminal to the input terminal and the ground terminal and (b) cause the first transistor to control a voltage across the second transistor during switching transitions of the second transistor.
    Type: Application
    Filed: July 28, 2017
    Publication date: November 23, 2017
    Inventors: Marco A. Zuniga, Chiteh Chiang, Yang Lu, Badredin Fatemizadeh, Amit Paul, Jun Ruan, Craig Cassella
  • Patent number: 9722483
    Abstract: A voltage regulator has an input terminal and a ground terminal. The voltage regulator includes a high-side device, a low side device, and a controller. The high-side device is coupled between the input terminal and an intermediate terminal. The high-side device includes first and second transistors each coupled between the input terminal and the intermediate terminal, such that the first transistor controls a drain-source switching voltage of the second transistor. The low-side device is coupled between the intermediate terminal and the ground terminal. The controller drives the high-side and low-side devices to alternately couple the intermediate terminal to the input terminal and the ground terminal.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: August 1, 2017
    Assignee: Volterra Semiconductor LLC
    Inventors: Marco A. Zuniga, Chiteh Chiang, Yang Lu, Badredin Fatemizadeh, Amit Paul, Jun Ruan, Craig Cassella
  • Publication number: 20170125335
    Abstract: Various applications of interconnect substrates in power management systems are described.
    Type: Application
    Filed: December 9, 2016
    Publication date: May 4, 2017
    Inventors: Mihalis Michael, Kwang Hong Tan, Ilija Jergovic, Chiteh Chiang, Anthony J. Stratakos
  • Patent number: 9520342
    Abstract: Various applications of interconnect substrates in power management systems are described.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: December 13, 2016
    Assignee: Volterra Semiconductor Corporation
    Inventors: Mihalis Michael, Kwang Hong Tan, Ilija Jergovic, Chiteh Chiang, Anthony Stratakos
  • Publication number: 20160020698
    Abstract: The subject matter of this document can be embodied in a method that includes a voltage regulator having an input terminal and an output terminal. The voltage regulator includes a high-side transistor between the input terminal and an intermediate terminal, and a low-side transistor between the intermediate terminal and ground. The voltage regulator includes a low-side driver circuit including a capacitor and an inverter. The output of the inverter is connected to the gate of the low-side transistor. The voltage regulator also includes a controller that drives the high-side and low-side transistors to alternately couple the intermediate terminal to the input terminal and ground. The controller is configured to drive the low-side transistor by controlling the inverter. The voltage regulator further includes a switch coupled to the low-side driver circuit. The switch is configured to block charge leakage out of the capacitor during an off state of the low-side transistor.
    Type: Application
    Filed: September 28, 2015
    Publication date: January 21, 2016
    Inventors: Chiteh Chiang, Marco A. Zuniga, Yang Lu
  • Patent number: 9178408
    Abstract: This document describes systems and techniques related to voltage regulators. The subject matter of this document can be embodied in a method that includes measuring an output current of a switching regulator. The switching regulator includes a high-side transistor and a low side-transistor wherein the high-side transistor and the low-side transistor are driven using a first gate voltage and a second, different gate voltage, respectively. The method also includes adjusting a direct-current (DC) voltage source of the switching regulator such that the first gate voltage is adjusted in accordance with the measured output current.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: November 3, 2015
    Assignee: Volterra Semiconductor LLC
    Inventors: Marco A. Zuniga, Chiteh Chiang, William Numann, Yang Lu, Jun Ruan
  • Publication number: 20150303132
    Abstract: Various applications of interconnect substrates in power management systems are described.
    Type: Application
    Filed: June 29, 2015
    Publication date: October 22, 2015
    Inventors: Mihalis Michael, Kwang Hong Tan, Ilija Jergovic, Chiteh Chiang, Anthony Stratakos
  • Patent number: 9148054
    Abstract: The subject matter of this document can be embodied in a method that includes a voltage regulator having an input terminal and an output terminal. The voltage regulator includes a high-side transistor between the input terminal and an intermediate terminal, and a low-side transistor between the intermediate terminal and ground. The voltage regulator includes a low-side driver circuit including a capacitor and an inverter. The output of the inverter is connected to the gate of the low-side transistor. The voltage regulator also includes a controller that drives the high-side and low-side transistors to alternately couple the intermediate terminal to the input terminal and ground. The controller is configured to drive the low-side transistor by controlling the inverter. The voltage regulator further includes a switch coupled to the low-side driver circuit. The switch is configured to block charge leakage out of the capacitor during an off state of the low-side transistor.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: September 29, 2015
    Assignee: Volterra Semiconductor LLC
    Inventors: Chiteh Chiang, Marco A. Zuniga, Yang Lu
  • Patent number: 9099340
    Abstract: Various applications of interconnect substrates in power management systems are described.
    Type: Grant
    Filed: October 4, 2012
    Date of Patent: August 4, 2015
    Assignee: Volterra Semiconductor Corporation
    Inventors: Mihalis Michael, Kwang Hong Tan, Ilija Jergovic, Chiteh Chiang, Anthony Stratakos
  • Publication number: 20140266113
    Abstract: A voltage regulator has an input terminal and a ground terminal. The voltage regulator includes a high-side device, a low side device, and a controller. The high-side device is coupled between the input terminal and an intermediate terminal. The high-side device includes first and second transistors each coupled between the input terminal and the intermediate terminal, such that the first transistor controls a drain-source switching voltage of the second transistor. The low-side device is coupled between the intermediate terminal and the ground terminal. The controller drives the high-side and low-side devices to alternately couple the intermediate terminal to the input terminal and the ground terminal.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 18, 2014
    Applicant: Volterra Semiconductor Corporation
    Inventors: Marco A. Zuniga, Chiteh Chiang, Yang Lu, Badredin Fatemizadeh, Amit Paul, Jun Ruan, Craig Cassella
  • Publication number: 20140266091
    Abstract: This document describes systems and techniques related to voltage regulators. The subject matter of this document can be embodied in a method that includes measuring an output current of a switching regulator. The switching regulator includes a high-side transistor and a low side-transistor wherein the high-side transistor and the low-side transistor are driven using a first gate voltage and a second, different gate voltage, respectively. The method also includes adjusting a direct-current (DC) voltage source of the switching regulator such that the first gate voltage is adjusted in accordance with the measured output current.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Applicant: Volterra Semiconductor Corporation
    Inventors: Marco A. Zuniga, Chiteh Chiang, William Numann, Yang Lu, Jun Ruan
  • Publication number: 20140266130
    Abstract: The subject matter of this document can be embodied in a method that includes a voltage regulator having an input terminal and an output terminal. The voltage regulator includes a high-side transistor between the input terminal and an intermediate terminal, and a low-side transistor between the intermediate terminal and ground. The voltage regulator includes a low-side driver circuit including a capacitor and an inverter. The output of the inverter is connected to the gate of the low-side transistor. The voltage regulator also includes a controller that drives the high-side and low-side transistors to alternately couple the intermediate terminal to the input terminal and ground. The controller is configured to drive the low-side transistor by controlling the inverter. The voltage regulator further includes a switch coupled to the low-side driver circuit. The switch is configured to block charge leakage out of the capacitor during an off state of the low-side transistor.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Applicant: VOLTERRA SEMICONDUCTOR CORPORATION
    Inventors: Chiteh Chiang, Marco A. Zuniga, Yang Lu