Patents by Inventor David Waterson

David Waterson 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).

  • Publication number: 20210152093
    Abstract: A power converter includes a primary winding and multiple output windings to provide multiple independently controlled and regulated outputs with a common return line. The outputs are coupled to independently regulate constant current, constant voltage, or both constant current and constant voltage outputs. A secondary control block is coupled to control a synchronous rectifier switch coupled to the common return line to synchronize switching with a primary side power switch to provide complementary conduction of the primary winding and the multiple output windings. A plurality of controlled power pulse switches is coupled to the multiple output windings. A request of a power pulse from each of the outputs is transferred through the secondary control block to a primary switch control block to turn on the primary side power switch to transfer a power pulse to the multiple output windings and through controlled power pulse switches to the outputs.
    Type: Application
    Filed: October 30, 2020
    Publication date: May 20, 2021
    Applicant: Power Integrations, Inc.
    Inventors: Antonius Jacobus Johannes Werner, Matthew David Waterson, Yuncong Alex Jiang, Roland Sylvere Saint-Pierre
  • Patent number: 10965219
    Abstract: A controller for use in a power converter with multiple outputs includes a discharge detect circuit coupled to receive a voltage signal from a transformer winding of the power converter to output a discharge signal in response to the voltage signal. A multi-output signal process and interface block is coupled to output request signals to the output selection drive and idle ring visibility logic circuit. An output selection drive and idle ring visibility logic circuit is coupled to receive the discharge signal from the discharge detect circuit and the output request signals from the multi-output signal process and interface block. An idle ring detection circuit is coupled to one of the plurality of output switches and coupled to output an idle ring output signal to generate a next request pulse.
    Type: Grant
    Filed: December 4, 2019
    Date of Patent: March 30, 2021
    Assignee: Power Integrations, Inc.
    Inventors: Antonius Jacobus Johannes Werner, Manoj Bhasin, Matthew David Waterson, Karl Moore
  • Patent number: 10855191
    Abstract: A power converter includes a primary winding and multiple output windings to provide multiple independently controlled and regulated outputs with a common return line. The outputs are coupled to independently regulate constant current, constant voltage, or both constant current and constant voltage outputs. A secondary control block is coupled to control a synchronous rectifier switch coupled to the common return line to synchronize switching with a primary side power switch to provide complementary conduction of the primary winding and the multiple output windings. A plurality of controlled power pulse switches is coupled to the multiple output windings. A request of a power pulse from each of the outputs is transferred through the secondary control block to a primary switch control block to turn on the primary side power switch to transfer a power pulse to the multiple output windings and through controlled power pulse switches to the outputs.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: December 1, 2020
    Assignee: Power Integrations, Inc.
    Inventors: Antonius Jacobus Johannes Werner, Matthew David Waterson, Yuncong Alex Jiang, Roland Sylvere Saint-Pierre
  • Publication number: 20200106365
    Abstract: A controller for use in a power converter with multiple outputs includes a discharge detect circuit coupled to receive a voltage signal from a transformer winding of the power converter to output a discharge signal in response to the voltage signal. A multi-output signal process and interface block is coupled to output request signals to the output selection drive and idle ring visibility logic circuit. An output selection drive and idle ring visibility logic circuit is coupled to receive the discharge signal from the discharge detect circuit and the output request signals from the multi-output signal process and interface block. An idle ring detection circuit is coupled to one of the plurality of output switches and coupled to output an idle ring output signal to generate a next request pulse.
    Type: Application
    Filed: December 4, 2019
    Publication date: April 2, 2020
    Applicant: Power Integrations, Inc.
    Inventors: ANTONIUS JACOBUS JOHANNES WERNER, Manoj Bhasin, Matthew David Waterson, Karl Moore
  • Patent number: 10574145
    Abstract: A method of dynamically adjusting a storage time of a bipolar junction transistor (BJT) in a switched mode power converter during a switching cycle includes generating a storage time reference signal responsive to an input voltage signal. A collector off signal is generated responsive to a comparison of a current sense signal to a collector off reference threshold signal. The current sense signal is representative of a switch current of the BJT. A base off reference threshold signal is generated responsive to the storage time reference signal and the collector off signal. A base off signal is generated responsive to a comparison of the current sense signal and the base off reference threshold signal. Charging of a base terminal of the BJT is discontinued responsive to the base off signal, and the base terminal of the BJT is discharged responsive to the collector off signal.
    Type: Grant
    Filed: August 27, 2018
    Date of Patent: February 25, 2020
    Assignee: Power Integrations, Inc.
    Inventors: Antonius Jacobus Johannes Werner, Manoj Bhasin, Matthew David Waterson, Adrian Kirilov Lefedjiev
  • Patent number: 10554134
    Abstract: A controller for use in a power converter with multiple outputs includes a discharge detect circuit coupled to receive a voltage signal from a transformer winding of the power converter to output a discharge signal in response to the voltage signal. A multi-output signal process and interface block is coupled to output request signals to the output selection drive and idle ring visibility logic circuit. An output selection drive and idle ring visibility logic circuit is coupled to receive the discharge signal from the discharge detect circuit and the output request signals from the multi-output signal process and interface block. An idle ring detection circuit is coupled to one of the plurality of output switches and coupled to output an idle ring output signal to generate a next request pulse.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: February 4, 2020
    Assignee: POWER INTEGRATIONS, INC.
    Inventors: Antonius Jacobus Johannes Werner, Manoj Bhasin, Matthew David Waterson, Karl Moore
  • Publication number: 20190372470
    Abstract: Apparatus and methods for sequencing outputs in a multi-output power converter system are disclosed herein. During start-up multiple CC/CV outputs may be sequenced so that energy is first provided to a highest voltage secondary output and subsequently provided to a lowest voltage secondary output. Additionally, control may be exerted so as to concurrently and monotonically increase voltages during at least part of the start-up transient; and concurrent control may be further implemented using control circuitry and a variable reference generator. In some embodiments a variable reference may be generated from a capacitor voltage.
    Type: Application
    Filed: January 16, 2019
    Publication date: December 5, 2019
    Applicant: Power Integrations, Inc.
    Inventors: Karl Moore, Matthew David Waterson, Antonius Jacobus Johannes Werner
  • Publication number: 20190348900
    Abstract: A switched mode power converter has an energy transfer element that delivers an output signal to a load. A power switching device coupled to the primary side of the energy transfer element regulates a transfer of energy to the load. A secondary controller is coupled to receive a feedback signal and output a pulsed signal in response thereto. A primary controller is coupled to receive the pulsed signal and output a drive signal in response thereto, the drive signal being coupled to control switching of the power switching device. A compensation circuit generates an adaptively compensated signal synchronous with the pulsed signal. The adaptively compensated signal has a parameter that is adaptively adjusted in response to a comparison of the feedback signal with a threshold reference signal. The parameter converges towards a final value that produces a desired level of the output signal.
    Type: Application
    Filed: April 9, 2019
    Publication date: November 14, 2019
    Applicant: Power Integrations, Inc.
    Inventors: Giao Minh Pham, Vikram Balakrishnan, Arthur B. Odell, Antonius Jacobus Johannes Werner, Karl Moore, Matthew David Waterson
  • Publication number: 20190326823
    Abstract: A power converter includes a primary winding and multiple output windings to provide multiple independently controlled and regulated outputs with a common return line. The outputs are coupled to independently regulate constant current, constant voltage, or both constant current and constant voltage outputs. A secondary control block is coupled to control a synchronous rectifier switch coupled to the common return line to synchronize switching with a primary side power switch to provide complementary conduction of the primary winding and the multiple output windings. A plurality of controlled power pulse switches is coupled to the multiple output windings. A request of a power pulse from each of the outputs is transferred through the secondary control block to a primary switch control block to turn on the primary side power switch to transfer a power pulse to the multiple output windings and through controlled power pulse switches to the outputs.
    Type: Application
    Filed: March 25, 2019
    Publication date: October 24, 2019
    Applicant: Power Integrations, Inc.
    Inventors: Antonius Jacobus Johannes Werner, Matthew David Waterson, Yuncong Alex Jiang, Roland Sylvere Saint-Pierre
  • Patent number: 10298110
    Abstract: A switched mode power converter has an energy transfer element that delivers an output signal to a load. A power switching device coupled to the primary side of the energy transfer element regulates a transfer of energy to the load. A secondary controller is coupled to receive a feedback signal and output a pulsed signal in response thereto. A primary controller is coupled to receive the pulsed signal and output a drive signal in response thereto, the drive signal being coupled to control switching of the power switching device. A compensation circuit generates an adaptively compensated signal synchronous with the pulsed signal. The adaptively compensated signal has a parameter that is adaptively adjusted in response to a comparison of the feedback signal with a threshold reference signal. The parameter converges towards a final value that produces a desired level of the output signal.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: May 21, 2019
    Assignee: Power Integrations, Inc.
    Inventors: Giao Minh Pham, Vikram Balakrishnan, Arthur B. Odell, Antonius Jacobus Johannes Werner, Karl Moore, Matthew David Waterson
  • Patent number: 10277136
    Abstract: A power converter includes a primary winding and multiple output windings to provide multiple independently controlled and regulated outputs with a common return line. The outputs are coupled to independently regulate constant current, constant voltage, or both constant current and constant voltage outputs. A secondary control block is coupled to control a synchronous rectifier switch coupled to the common return line to synchronize switching with a primary side power switch to provide complementary conduction of the primary winding and the multiple output windings. A plurality of controlled power pulse switches is coupled to the multiple output windings. A request of a power pulse from each of the outputs is transferred through the secondary control block to a primary switch control block to turn on the primary side power switch to transfer a power pulse to the multiple output windings and through controlled power pulse switches to the outputs.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: April 30, 2019
    Assignee: Power Integrations, Inc.
    Inventors: Antonius Jacobus Johannes Werner, Matthew David Waterson, Yuncong Alex Jiang, Roland Sylvere Saint-Pierre
  • Patent number: 10214495
    Abstract: The present invention is related to a use of aminopyrazine derivatives in the manufacture of a medicament for preventing or treating malaria. Specifically, the present invention is related to aminopyrazine derivatives useful for the preparation of a pharmaceutical formulation for the inhibition of malaria parasite proliferation.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: February 26, 2019
    Assignee: University of Cape Town
    Inventors: David Waterson, Michael John Witty, Kelly Chibale, Leslie Street, Diego Gonzalez Cabrera, Tanya Paquet
  • Patent number: 10218282
    Abstract: Apparatus and methods for sequencing outputs in a multi-output power converter system are disclosed herein. During start-up multiple CC/CV outputs may be sequenced so that energy is first provided to a highest voltage secondary output and subsequently provided to a lowest voltage secondary output. Additionally, control may be exerted so as to concurrently and monotonically increase voltages during at least part of the start-up transient; and concurrent control may be further implemented using control circuitry and a variable reference generator. In some embodiments a variable reference may be generated from a capacitor voltage.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: February 26, 2019
    Assignee: Power Integrations, Inc.
    Inventors: Karl Moore, Matthew David Waterson, Antonius Jacobus Johannes Werner
  • Publication number: 20180367048
    Abstract: A method of dynamically adjusting a storage time of a bipolar junction transistor (BJT) in a switched mode power converter during a switching cycle includes generating a storage time reference signal responsive to an input voltage signal. A collector off signal is generated responsive to a comparison of a current sense signal to a collector off reference threshold signal. The current sense signal is representative of a switch current of the BJT. A base off reference threshold signal is generated responsive to the storage time reference signal and the collector off signal. A base off signal is generated responsive to a comparison of the current sense signal and the base off reference threshold signal. Charging of a base terminal of the BJT is discontinued responsive to the base off signal, and the base terminal of the BJT is discharged responsive to the collector off signal.
    Type: Application
    Filed: August 27, 2018
    Publication date: December 20, 2018
    Inventors: Antonius Jacobus Johannes Werner, Manoj Bhasin, Matthew David Waterson, Adrian Kirilov Lefedjiev
  • Publication number: 20180351463
    Abstract: A controller for use in a power converter with multiple outputs includes a discharge detect circuit coupled to receive a voltage signal from a transformer winding of the power converter to output a discharge signal in response to the voltage signal. A multi-output signal process and interface block is coupled to output request signals to the output selection drive and idle ring visibility logic circuit. An output selection drive and idle ring visibility logic circuit is coupled to receive the discharge signal from the discharge detect circuit and the output request signals from the multi-output signal process and interface block. An idle ring detection circuit is coupled to one of the plurality of output switches and coupled to output an idle ring output signal to generate a next request pulse.
    Type: Application
    Filed: June 2, 2017
    Publication date: December 6, 2018
    Inventors: Antonius Jacobus Johannes Werner, Manoj Bhasin, Matthew David Waterson, Karl Moore
  • Patent number: 10084386
    Abstract: A controller for a power converter includes a driver circuit that generates a control signal to switch a power switch in response to an output, and a control circuit that controls the switching of the power switch. The control circuit includes a storage time reference circuit generates a storage time reference signal responsive to an input. A first comparator generates a collector off signal in response to a comparison of a switch current sense signal and a collector off reference signal. A storage time regulator circuit generates a base off reference signal in response to the storage time reference signal and the collector off signal. A second comparator generates a base off signal in response to a second comparison of the switch current sense signal and the base off reference signal. The driver circuit is coupled to discontinue and start charging a base terminal of the BJT power switch.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: September 25, 2018
    Assignee: Power Integrations, Inc.
    Inventors: Antonius Jacobus Johannes Werner, Manoj Bhasin, Matthew David Waterson, Adrian Kirilov Lefedjiev
  • Publication number: 20180248466
    Abstract: A switched mode power converter has an energy transfer element that delivers an output signal to a load. A power switching device coupled to the primary side of the energy transfer element regulates a transfer of energy to the load. A secondary controller is coupled to receive a feedback signal and output a pulsed signal in response thereto. A primary controller is coupled to receive the pulsed signal and output a drive signal in response thereto, the drive signal being coupled to control switching of the power switching device. A compensation circuit generates an adaptively compensated signal synchronous with the pulsed signal. The adaptively compensated signal has a parameter that is adaptively adjusted in response to a comparison of the feedback signal with a threshold reference signal. The parameter converges towards a final value that produces a desired level of the output signal.
    Type: Application
    Filed: April 25, 2018
    Publication date: August 30, 2018
    Inventors: Giao Minh Pham, Vikram Balakrishnan, Arthur B. Odell, Antonius Jacobus Johannes Werner, Karl Moore, Matthew David Waterson
  • Publication number: 20180194741
    Abstract: The present invention is related to a use of aminopyrazine derivatives in the manufacture of a medicament for preventing or treating malaria. Specifically, the present invention is related to aminopyrazine derivatives useful for the preparation of a pharmaceutical formulation for the inhibition of malaria parasite proliferation.
    Type: Application
    Filed: July 13, 2015
    Publication date: July 12, 2018
    Inventors: DAVID WATERSON, MICHAEL JOHN WITTY, KELLY CHIBALE, LESLIE STREET, DIEGO GONZALEZ CABRERA, TANYA PAQUET
  • Patent number: 10020742
    Abstract: A controller for use in a two-stage power supply is coupled to control switching of a switching element to regulate a transfer of energy from an input to an output of a flyback converter. The controller activates a boost switching element during a first interval in each line half cycle of an input voltage to boost an output voltage at an output of a boost-bypass converter. The controller deactivates the boost switching element during a second interval in each line half cycle such that the output voltage of the boost-bypass converter drops towards the input voltage during the second interval while the output voltage of the boost-bypass converter is greater than the input voltage. The controller controls the output voltage to follow the input voltage during a third interval of each line half cycle while the boost switching element remains deactivated and the input and output voltages are substantially equal.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: July 10, 2018
    Assignee: Power Integrations, Inc.
    Inventors: Antonius Jacobus Johannes Werner, Matthew David Waterson
  • Publication number: 20180159434
    Abstract: A power converter includes a primary winding and multiple output windings to provide multiple independently controlled and regulated outputs with a common return line. The outputs are coupled to independently regulate constant current, constant voltage, or both constant current and constant voltage outputs. A secondary control block is coupled to control a synchronous rectifier switch coupled to the common return line to synchronize switching with a primary side power switch to provide complementary conduction of the primary winding and the multiple output windings. A plurality of controlled power pulse switches is coupled to the multiple output windings. A request of a power pulse from each of the outputs is transferred through the secondary control block to a primary switch control block to turn on the primary side power switch to transfer a power pulse to the multiple output windings and through controlled power pulse switches to the outputs.
    Type: Application
    Filed: May 26, 2017
    Publication date: June 7, 2018
    Inventors: Antonius Jacobus Johannes Werner, Matthew David Waterson, Yuncong Alex Jiang, Roland Sylvere Saint-Pierre