Patents by Inventor Roland Sylvere Saint-Pierre

Roland Sylvere Saint-Pierre 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: 11081964
    Abstract: A method of providing an input switching request signal to an input side switch includes determining a switching request window indicative of relaxation ringing during a first switching cycle. It is determined that the input side switch is operating in a discontinuous conduction mode (DCM) mode of operation during a second switching cycle. It is determined that the switching request window is open during the second switching cycle. The input switching request signal is enabled in response to determining the switching request window is open.
    Type: Grant
    Filed: October 9, 2018
    Date of Patent: August 3, 2021
    Assignee: Power Integrations, Inc.
    Inventors: Balu Balakrishnan, David Michael Hugh Matthews, Vikram Balakrishnan, Roland Sylvere Saint-Pierre, Zhao-Jun Wang, Giao Minh Pham, Qing McIntosh
  • 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
  • Publication number: 20210083500
    Abstract: A charging device comprising a first power converter configured to provide a first output power, a second power converter configured to provide a second output power. A switch is coupled to the first power converter and the second power converter. A first socket is configured to deliver the first output power from the first power converter to a first powered device. A second socket is configured to deliver the second output power from the second power converter to a second powered device. A power delivery (PD) controller configured to detect a coupling of the first socket to the first powered device. In addition, the PD controller is configured to detect an absence of coupling of the second socket to the second powered device. Furthermore, the PD controller is configured to control the switch to provide the first output power and the second output power to the first powered device.
    Type: Application
    Filed: November 30, 2020
    Publication date: March 18, 2021
    Applicant: Power Integrations, Inc.
    Inventors: Eng Hwee Quek, Aditya Jayant Kulkarni, Ran Li, Roland Sylvere Saint-Pierre
  • Publication number: 20210028708
    Abstract: A controller to regulate a power converter includes a terminal that receives an enable signal including enable events representative of an output of the power converter. A drive circuit generates a drive signal to control switching of a power switch to control an energy transfer from an input to an output of the power converter. The drive circuit turns on the power switch when an enable event is received in the enable signal. A current limit threshold generator is coupled to the drive circuit to generate a threshold signal. The threshold signal increases in response to the power switch turning off and subsequently decreases. The threshold signal and a time between consecutive enable events are used to modulate the drive signal to regulate the output of the power converter.
    Type: Application
    Filed: September 11, 2020
    Publication date: January 28, 2021
    Inventors: Balu Balakrishnan, Roland Sylvere Saint-Pierre, Giao Minh Pham, Lance M. Wong
  • Patent number: 10892679
    Abstract: A controller includes a current limit generator that generates a current limit threshold. A switch controller receives the current limit threshold, an enable signal, and a current sense signal representative of a current through a power switch. The switch controller generates a drive signal to control switching of the power switch to control the transfer of energy from an input of the power converter to an output of the power converter in response to the enable signal and the current sense signal. The switch controller outputs the drive signal to turn on the power switch in response to the enable signal and turns off the power switch when the current sense signal reaches the current limit threshold. A jitter generator generates a jitter signal for jittering a switching period of the drive signal. The current limit threshold is modulated by the jitter signal.
    Type: Grant
    Filed: September 3, 2019
    Date of Patent: January 12, 2021
    Assignee: Power Integrations, Inc.
    Inventors: Roland Sylvere Saint-Pierre, Giao Minh Pham, Lance M. Wong, David Michael Hugh Matthews
  • 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
  • Patent number: 10811977
    Abstract: A controller to regulate a power converter includes a terminal coupled to receive an enable signal including enable events representative of an output of the power converter. A drive circuit is coupled to generate a drive signal to control switching of a power switch to control a transfer of energy from an input of the power converter to the output of the power converter. The drive circuit is coupled to turn on the power switch when an enable event is received in the enable signal. A current limit threshold generator is coupled to the drive circuit to generate a current limit threshold signal. The current limit threshold signal varies each switching cycle of the power switch. A time between consecutive enable events in the enable signal is the switching cycle of the power switch.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: October 20, 2020
    Assignee: Power Integrations, Inc.
    Inventors: Balu Balakrishnan, Roland Sylvere Saint-Pierre, Giao Minh Pham, Lance M. Wong
  • Publication number: 20190393775
    Abstract: A controller includes a current limit generator that generates a current limit threshold. A switch controller receives the current limit threshold, an enable signal, and a current sense signal representative of a current through a power switch. The switch controller generates a drive signal to control switching of the power switch to control the transfer of energy from an input of the power converter to an output of the power converter in response to the enable signal and the current sense signal. The switch controller outputs the drive signal to turn on the power switch in response to the enable signal and turns off the power switch when the current sense signal reaches the current limit threshold. A jitter generator generates a jitter signal for jittering a switching period of the drive signal. The current limit threshold is modulated by the jitter signal.
    Type: Application
    Filed: September 3, 2019
    Publication date: December 26, 2019
    Inventors: Roland Sylvere Saint-Pierre, Giao Minh Pham, Lance M. Wong, David Michael Hugh Matthews
  • 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: 10447149
    Abstract: A controller includes a switch controller, a current limit generator, a jitter modulator, and an arithmetic operator circuit. The switch controller is coupled to generate a drive signal to control switching of a power switch in response to a current sense signal and a modulated current limit signal to control a transfer of energy from an input of a power converter to an output of the power converter. The current limit generator is coupled to generate a current limit signal. The jitter modulator is coupled to generate a jitter signal for jittering a switching period of the drive signal without an oscillator. The arithmetic operator circuit is coupled to receive the current limit signal and the jitter signal and is coupled to generate a modulated current limit signal in response to the current limit signal and the jitter signal.
    Type: Grant
    Filed: January 9, 2019
    Date of Patent: October 15, 2019
    Assignee: Power Integrations, Inc.
    Inventors: Roland Sylvere Saint-Pierre, Giao Minh Pham, Lance M. Wong, David Michael Hugh Matthews
  • Publication number: 20190149040
    Abstract: A controller includes a switch controller, a current limit generator, a jitter modulator, and an arithmetic operator circuit. The switch controller is coupled to generate a drive signal to control switching of a power switch in response to a current sense signal and a modulated current limit signal to control a transfer of energy from an input of a power converter to an output of the power converter. The current limit generator is coupled to generate a current limit signal. The jitter modulator is coupled to generate a jitter signal for jittering a switching period of the drive signal without an oscillator. The arithmetic operator circuit is coupled to receive the current limit signal and the jitter signal and is coupled to generate a modulated current limit signal in response to the current limit signal and the jitter signal.
    Type: Application
    Filed: January 9, 2019
    Publication date: May 16, 2019
    Inventors: Roland Sylvere Saint-Pierre, Giao Minh Pham, Lance M. Wong, David Michael Hugh Matthews
  • 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
  • Publication number: 20190068063
    Abstract: A controller to regulate a power converter includes a terminal coupled to receive an enable signal including enable events representative of an output of the power converter. A drive circuit is coupled to generate a drive signal to control switching of a power switch to control a transfer of energy from an input of the power converter to the output of the power converter. The drive circuit is coupled to turn on the power switch when an enable event is received in the enable signal. A current limit threshold generator is coupled to the drive circuit to generate a current limit threshold signal. The current limit threshold signal varies each switching cycle of the power switch. A time between consecutive enable events in the enable signal is the switching cycle of the power switch.
    Type: Application
    Filed: October 29, 2018
    Publication date: February 28, 2019
    Inventors: Balu Balakrishnan, Roland Sylvere Saint-Pierre, Giao Minh Pham, Lance M. Wong
  • Patent number: 10218263
    Abstract: A controller includes a switch controller coupled to a power switch coupled to an energy transfer element. The switch controller is coupled to receive a current sense signal representative of a drain current through the power switch. The switch controller is coupled to generate a drive signal to control switching of the power switch in response to the current sense signal and a modulated current limit signal to control a transfer of energy from an input to an output of the power converter. A control modulator is coupled to generate a first signal. A jitter modulator is coupled to generate a second signal. The second signal is a periodic signal having a modulation time period that is greater than a switching period of the drive signal. An arithmetic operator circuit is coupled to generate the modulated current limit signal in response to the first signal and the second signal.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: February 26, 2019
    Assignee: Power Integrations, Inc.
    Inventors: Roland Sylvere Saint-Pierre, Giao Minh Pham, Lance M. Wong, David Michael Hugh Matthews
  • Publication number: 20190044448
    Abstract: A method of providing an input switching request signal to an input side switch includes determining a switching request window indicative of relaxation ringing during a first switching cycle. It is determined that the input side switch is operating in a discontinuous conduction mode (DCM) mode of operation during a second switching cycle. It is determined that the switching request window is open during the second switching cycle. The input switching request signal is enabled in response to determining the switching request window is open.
    Type: Application
    Filed: October 9, 2018
    Publication date: February 7, 2019
    Inventors: Balu Balakrishnan, David Michael Hugh Matthews, Vikram Balakrishnan, Roland Sylvere Saint-Pierre, Zhao-Jun Wang, Giao Minh Pham, Qing McIntosh
  • Patent number: 10158295
    Abstract: A power converter includes an energy transfer element that includes a primary winding and a secondary winding, and is coupled to transfer energy between the primary winding and the secondary winding. An enable circuit is coupled to generate an enable signal in response to a feedback signal falling below a threshold. A controller is coupled to control switching of a power switch coupled to the primary winding to regulate an output of the power converter. The controller includes a drive circuit coupled to output a drive signal in response to the enable signal, and a current limit threshold generator coupled to output a current limit threshold signal to the drive circuit in response to the drive signal. The current limit threshold signal varies in response to a time between events of the enable signal over a range of loads coupled to the output of the power converter.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: December 18, 2018
    Assignee: Power Integrations, Inc.
    Inventors: Balu Balakrishnan, Roland Sylvere Saint-Pierre, Giao Minh Pham, Lance M. Wong
  • Patent number: 10141765
    Abstract: A circuit for use with a Universal Serial Bus (USB) socket includes a power converter coupled to receive an input voltage at an input terminal and coupled to provide an output voltage at an output terminal. A transistor is coupled between the output terminal of the power converter and a bus voltage terminal of the USB socket. A USB communication controller is coupled to the USB socket. The USB communication controller includes an output terminal coupled to a control terminal of the transistor. A bleeder circuit is coupled between the output terminal of the USB communication controller and the bus voltage terminal of the USB socket.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: November 27, 2018
    Assignee: Power Integrations, Inc.
    Inventors: Vikram Balakrishnan, Edward E. Deng, Roland Sylvere Saint-Pierre
  • Patent number: 10128763
    Abstract: A method for regulating a power converter includes initiating a transition of a switch coupled to an input side of the power converter from an OFF to an ON state to regulate a transfer of energy from the input to an output side of the power converter after a switch control signal generator receives an enable signal and if a feedback signal representative of an output of the power converter indicates a change in an output of the power converter. The enable signal is generated to communicate a control signal from the output to the input side in response to a first signal representative of a voltage on an output terminal that oscillates in response to an ending of the transfer of energy. The transition of the switch from the OFF to the ON state occurs substantially at a time that the first signal reaches an extremum.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: November 13, 2018
    Assignee: Power Integrations, Inc.
    Inventors: Balu Balakrishnan, David Michael Hugh Matthews, Vikram Balakrishnan, Roland Sylvere Saint-Pierre, Zhao-Jun Wang, Giao Minh Pham, Qing McIntosh
  • Publication number: 20180219399
    Abstract: A circuit for use with a Universal Serial Bus (USB) socket includes a power converter coupled to receive an input voltage at an input terminal and coupled to provide an output voltage at an output terminal. A transistor is coupled between the output terminal of the power converter and a bus voltage terminal of the USB socket. A USB communication controller is coupled to the USB socket. The USB communication controller includes an output terminal coupled to a control terminal of the transistor. A bleeder circuit is coupled between the output terminal of the USB communication controller and the bus voltage terminal of the USB socket.
    Type: Application
    Filed: January 27, 2017
    Publication date: August 2, 2018
    Inventors: Vikram Balakrishnan, Edward E. Deng, Roland Sylvere Saint-Pierre
  • 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