Patents by Inventor Gustavo J. Mehas

Gustavo J. Mehas 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: 10958154
    Abstract: In accordance with aspects of the present invention, a wireless power circuit is presented. In some embodiments, the wireless power circuit includes one or more high-side transistors; one or more low-side transistors coupled in series with the one or more high-side transistors, wherein the one or more low-side transistors can be controlled as current sources.
    Type: Grant
    Filed: July 2, 2018
    Date of Patent: March 23, 2021
    Assignee: Integrated Device Technology, Inc.
    Inventors: Rui Liu, Gustavo J. Mehas, Lijie Zhao
  • Patent number: 10923273
    Abstract: In some embodiments, a transmit coil configuration is provided. A coil configuration for a wireless transmitter according to some embodiments can include a plurality of turns coupled between a first tap coupled to an innermost turn and a second tap coupled to an outermost turn; and at least one adjustment tap coupled to at least one turn of the transmitter coil between the innermost turn and the outermost turn. The transmission coil can include an MST coil coupled to the second tap of the transmission coil. In some embodiments, the MST coil can include a plurality of turns arranged in one of a circle, an oval, an egg shape, or a square shape.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: February 16, 2021
    Assignee: Integrated Device Technology, Inc.
    Inventors: Gustavo J. Mehas, Tao Qi
  • Publication number: 20190198240
    Abstract: In some embodiments, a transmit coil configuration is provided. A coil configuration for a wireless transmitter according to some embodiments can include a plurality of turns coupled between a first tap coupled to an innermost turn and a second tap coupled to an outermost turn; and at least one adjustment tap coupled to at least one turn of the transmitter coil between the innermost turn and the outermost turn. The transmission coil can include an MST coil coupled to the second tap of the transmission coil. In some embodiments, the MST coil can include a plurality of turns arranged in one of a circle, an oval, an egg shape, or a square shape.
    Type: Application
    Filed: December 20, 2018
    Publication date: June 27, 2019
    Inventors: Gustavo J. MEHAS, Tao QI
  • Publication number: 20190013728
    Abstract: In accordance with aspects of the present invention, a wireless power circuit is presented. In some embodiments, the wireless power circuit includes one or more high-side transistors; one or more low-side transistors coupled in series with the one or more high-side transistors, wherein the one or more low-side transistors can be controlled as current sources.
    Type: Application
    Filed: July 2, 2018
    Publication date: January 10, 2019
    Inventors: Rui LIU, Gustavo J. MEHAS, Lijie ZHAO
  • Patent number: 10132650
    Abstract: A wireless power transmitter may include a transmit coil configured to generate a wireless power signal for wireless power transfer, at least one secondary sensing coil configured to generate a signal responsive to a magnetic flux field generated during the wireless power transfer, and control logic configured to detect at least one condition of a wireless power transfer system responsive to detecting distortion in the magnetic flux field from the at least one signal received from the secondary sensing coil. A related method may include generating with a wireless power transmitter a wireless power signal, generating with a plurality of secondary sensing coils one or more signals responsive to a magnetic flux field generated during the wireless power transfer, and detecting at least one condition of a wireless power transfer system responsive to the one or more signals generated by the plurality of secondary sensing coils.
    Type: Grant
    Filed: January 22, 2015
    Date of Patent: November 20, 2018
    Assignee: Integrated Device Technology, Inc.
    Inventors: Gustavo J. Mehas, David F. Wilson, Nicholaus W. Smith
  • Patent number: 10079508
    Abstract: A wireless power receiver may include a receive coil configured to generate an AC power signal, at least one secondary sensing coil configured to generate a measurement signal responsive to a magnetic flux field, and control logic configured to detect at least one condition of a wireless power transfer system responsive to detecting distortion in the magnetic flux field from the at least one measurement signal received from the secondary sensing coil. A related method may include receiving with a wireless power receiver a wireless power signal for wireless power transfer from a wireless power transmitter, generating with a plurality of secondary sensing coils one or more measurement signals responsive to a magnetic flux field generated during the wireless power transfer, and detecting at least one condition of a wireless power transfer system responsive to the one or more measurement signals generated by the plurality of secondary sensing coils.
    Type: Grant
    Filed: January 22, 2015
    Date of Patent: September 18, 2018
    Assignee: INTEGRATED DEVICE TECHNOLOGY, INC.
    Inventors: Gustavo J. Mehas, Vladimir N. Vitchev
  • Patent number: 9991818
    Abstract: A wireless power enabled apparatus includes a wireless power receiver. The wireless power receiver includes one or more receive coils configured to generate an AC power signal responsive to a wireless power signal. The wireless power receiver also includes two or more inductors configured with tightly coupled windings that share a common leakage inductance. Switching circuits are included such that each switching circuit is operably coupled to a corresponding one of the inductors. Control logic is configured to operate switches of the switching circuits such that each of the switching circuits and its corresponding two or more inductors are operated to shift between an energy storage mode for one or more phases of a switching period and an energy transfer mode for other phases of the switching period and the phases combine to comprise an entirety of the switching period.
    Type: Grant
    Filed: March 26, 2015
    Date of Patent: June 5, 2018
    Assignee: Integrated Device Technology, Inc.
    Inventors: Gustavo J. Mehas, Anthonius Bakker
  • Patent number: 9954581
    Abstract: A wireless power enabled apparatus may comprise a wireless power receiver that includes a receive coil configured to generate an AC power signal responsive to a wireless power signal, a rectifier including a plurality of switches configured to receive the AC power signal and generate a DC rectified power signal, a regulator operably coupled with the rectifier to receive the DC rectified power signal and generate an output power signal, and control logic configured to generate a communication signal responsive to adjusting an input impedance of the regulator. A method of operating a wireless power receiver includes generating a rectified voltage responsive to receiving a wireless power signal, generating an output voltage from the rectified voltage with a voltage regulator, and controlling the voltage regulator during a communication mode of wireless power receiver to modulate a characteristic of the voltage regulator with data for transmission to a wireless power transmitter.
    Type: Grant
    Filed: January 30, 2014
    Date of Patent: April 24, 2018
    Assignee: INTEGRATED DEVICE TECHNOLOGY, INC.
    Inventors: Gustavo J. Mehas, Vladimir N. Vitchev
  • Patent number: 9837864
    Abstract: A wireless power transmitter may include a bridge inverter and a plurality of parallel paths operably coupled to the bridge inverter. Each path includes a resonance tank including a transmit coil coupled with at least one resonance capacitor, a first switch serially coupled with the resonance tank and switching node A of the bridge inverter, a first clamping element in parallel with the first switch, a second switch serially coupled with the resonance tank and switching node B of the bridge inverter, and a second clamping element in parallel with the second switch. A method includes generating a wireless power signal through a used coil in a first parallel path, and clamping a parasitic voltage generated in at least one unused coil in at least one additional parallel path through a clamp element across a switch in the at least one parallel path for the at least one unused coil.
    Type: Grant
    Filed: March 26, 2015
    Date of Patent: December 5, 2017
    Assignee: Integrated Device Technology, Inc.
    Inventors: Gustavo J. Mehas, Nicholaus W. Smith, Adam M. Bumgarner
  • Publication number: 20160285279
    Abstract: A wireless power enabled apparatus includes a wireless power receiver. The wireless power receiver includes one or more receive coils configured to generate an AC power signal responsive to a wireless power signal. The wireless power receiver also includes two or more inductors configured with tightly coupled windings that share a common leakage inductance. Switching circuits are included such that each switching circuit is operably coupled to a corresponding one of the inductors. Control logic is configured to operate switches of the switching circuits such that each of the switching circuits and its corresponding two or more inductors are operated to shift between an energy storage mode for one or more phases of a switching period and an energy transfer mode for other phases of the switching period and the phases combine to comprise an entirety of the switching period.
    Type: Application
    Filed: March 26, 2015
    Publication date: September 29, 2016
    Inventors: Gustavo J. Mehas, Anthonius Bakker
  • Publication number: 20160285278
    Abstract: A wireless power transmitter may include a bridge inverter and a plurality of parallel paths operably coupled to the bridge inverter. Each path includes a resonance tank including a transmit coil coupled with at least one resonance capacitor, a first switch serially coupled with the resonance tank and switching node A of the bridge inverter, a first clamping element in parallel with the first switch, a second switch serially coupled with the resonance tank and switching node B of the bridge inverter, and a second clamping element in parallel with the second switch. A method includes generating a wireless power signal through a used coil in a first parallel path, and clamping a parasitic voltage generated in at least one unused coil in at least one additional parallel path through a clamp element across a switch in the at least one parallel path for the at least one unused coil.
    Type: Application
    Filed: March 26, 2015
    Publication date: September 29, 2016
    Inventors: Gustavo J. Mehas, Nicholaus W. Smith, Adam M. Bumgarner
  • Publication number: 20160218559
    Abstract: A wireless power transmitter may include a transmit coil configured to generate a wireless power signal for wireless power transfer, at least one secondary sensing coil configured to generate a signal responsive to a magnetic flux field generated during the wireless power transfer, and control logic configured to detect at least one condition of a wireless power transfer system responsive to detecting distortion in the magnetic flux field from the at least one signal received from the secondary sensing coil. A related method may include generating with a wireless power transmitter a wireless power signal, generating with a plurality of secondary sensing coils one or more signals responsive to a magnetic flux field generated during the wireless power transfer, and detecting at least one condition of a wireless power transfer system responsive to the one or more signals generated by the plurality of secondary sensing coils.
    Type: Application
    Filed: January 22, 2015
    Publication date: July 28, 2016
    Inventors: Gustavo J. Mehas, David F. Wilson, Nicholaus W. Smith
  • Publication number: 20160218520
    Abstract: A wireless power receiver may include a receive coil configured to generate an AC power signal, at least one secondary sensing coil configured to generate a measurement signal responsive to a magnetic flux field, and control logic configured to detect at least one condition of a wireless power transfer system responsive to detecting distortion in the magnetic flux field from the at least one measurement signal received from the secondary sensing coil. A related method may include receiving with a wireless power receiver a wireless power signal for wireless power transfer from a wireless power transmitter, generating with a plurality of secondary sensing coils one or more measurement signals responsive to a magnetic flux field generated during the wireless power transfer, and detecting at least one condition of a wireless power transfer system responsive to the one or more measurement signals generated by the plurality of secondary sensing coils.
    Type: Application
    Filed: January 22, 2015
    Publication date: July 28, 2016
    Inventors: Gustavo J. Mehas, Vladimir N. Vitchev
  • Publication number: 20150215006
    Abstract: A wireless power enabled apparatus may comprise a wireless power receiver that includes a receive coil configured to generate an AC power signal responsive to a wireless power signal, a rectifier including a plurality of switches configured to receive the AC power signal and generate a DC rectified power signal, a regulator operably coupled with the regulator to receive the DC rectified power signal and generate an output power signal, and control logic configured to generate a communication signal responsive to adjusting an input impedance of the regulator. A method of operating a wireless power receiver includes generating a rectified voltage responsive to receiving a wireless power signal, generating an output voltage from the rectified voltage with a voltage regulator, and controlling the voltage regulator during a communication mode of wireless power receiver to modulate a characteristic of the voltage regulator with data for transmission to a wireless power transmitter.
    Type: Application
    Filed: January 30, 2014
    Publication date: July 30, 2015
    Applicant: Integrated Device Technology, Inc.
    Inventors: Gustavo J. Mehas, Vladimir N. Vitchev
  • Patent number: 8242763
    Abstract: A DC to DC converter has first and second transistor coupled at a first node and coupled between first and second power supply terminals. An inductor has a first terminal coupled to the first node and a second terminal coupled to an output terminal for receiving a variable load. Transistor drive circuitry controls conduction of the first and second transistor in a non-overlapping conduction operation. A duty cycle controller controls a duty cycle for the first transistor and the second transistor. Control circuitry determines a mode of operation by monitoring cycles of operation and detecting a predetermined pattern of cycles in which inductor current becomes negative. A first mode of operation permits both the first transistor and the second transistor to alternately conduct and a second mode of operation does not permit the second transistor to conduct during each cycle when the inductor current is reduced to substantially zero.
    Type: Grant
    Filed: March 12, 2010
    Date of Patent: August 14, 2012
    Assignee: Freescale Semiconductor, Inc.
    Inventors: John M. Pigott, Gustavo J. Mehas, Gerrit van der Horn, Richard Willem Visee
  • Publication number: 20110221414
    Abstract: A DC to DC converter has first and second transistor coupled at a first node and coupled between first and second power supply terminals. An inductor has a first terminal coupled to the first node and a second terminal coupled to an output terminal for receiving a variable load. Transistor drive circuitry controls conduction of the first and second transistor in a non-overlapping conduction operation. A duty cycle controller controls a duty cycle for the first transistor and the second transistor. Control circuitry determines a mode of operation by monitoring cycles of operation and detecting a predetermined pattern of cycles in which inductor current becomes negative. A first mode of operation permits both the first transistor and the second transistor to alternately conduct and a second mode of operation does not permit the second transistor to conduct during each cycle when the inductor current is reduced to substantially zero.
    Type: Application
    Filed: March 12, 2010
    Publication date: September 15, 2011
    Inventors: John M. Pigott, Gustavo J. Mehas, Gerrit van der Horn, Richard Willem Visee
  • Publication number: 20110156787
    Abstract: An apparatus for providing programmable hysteresis control using an enable pin of a device is disclosed. An enable pin is configured to receive an input signal to enable and disable an associated device responsive to the input signal. A current sink is attached to the enable pin and is responsive to circuitry that disables the current sink responsive to application of the input signal at a first voltage level and enables the current sink responsive to application of the input signal at a second voltage level.
    Type: Application
    Filed: March 9, 2011
    Publication date: June 30, 2011
    Applicant: INTERSIL AMERICAS INC.
    Inventors: Gustavo J. Mehas, Chun Cheung, Brandon D. Day
  • Patent number: 7928787
    Abstract: An apparatus for providing programmable hysteresis control using an enable pin of a device is disclosed. An enable pin is configured to receive an input signal to enable and disable an associated device responsive to the input signal. A current sink is attached to the enable pin and is responsive to circuitry that disables the current sink responsive to application of the input signal at a first voltage level and enables the current sink responsive to application of the input signal at a second voltage level.
    Type: Grant
    Filed: August 13, 2004
    Date of Patent: April 19, 2011
    Assignee: Intersil Americas Inc.
    Inventors: Gustavo J. Mehas, Chun Cheung, Brandon D. Day
  • Patent number: 7612546
    Abstract: A voltage regulator includes a voltage source for providing an input voltage. The regulator includes circuitry responsive to the input voltage for generating a regulated output voltage. The circuitry enables selection of one of internal linear voltage regulation or external linear voltage regulation for generating the regulated output voltage.
    Type: Grant
    Filed: August 16, 2004
    Date of Patent: November 3, 2009
    Assignee: Intersil Americas Inc.
    Inventors: James W. Leith, Gustavo J. Mehas, Bogdan Duduman
  • Patent number: 7453251
    Abstract: A control circuit for a PWM switching power regulator including an error amplifier and an amplifier filter circuit. The error amplifier has a first input receiving a reference signal, a second input receiving an output sense signal, and an output providing a compensation signal used to control PWM switching. The amplifier filter circuit has an input receiving a ratio-metric tracking signal and an output providing the reference signal to the input of the error amplifier. The control circuit may include a resistive voltage divider for providing the tracking signal. The amplifier filter circuit may be implemented as a transconductance amplifier having an input receiving the tracking signal and an output coupled to a capacitor. The transconductance amplifier may have a relatively small current drive capacity and its output may have a relatively slow and weak response to changes of the tracking signal.
    Type: Grant
    Filed: January 17, 2006
    Date of Patent: November 18, 2008
    Assignee: Intersil Americas Inc.
    Inventors: Gustavo J. Mehas, James W. Leith, Shying D. Chen