Patents by Inventor Andre Mourrier

Andre Mourrier 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: 20200099176
    Abstract: A method of operating a power system includes connecting an external load to a power outlet of the power system while a power switch of the power system is turned off, where the power switch is coupled between a power supply of the power system and the power outlet; measuring one or more electrical characteristics of the external load while the power switch is turned off; determining, based on the measured one or more electrical characteristics of the external load, whether a demagnetization energy of the external load is within a safe operation range for the power system; and in response to determining that the demagnetization energy of the external load is within the safe operation range, turning on the power switch.
    Type: Application
    Filed: September 21, 2018
    Publication date: March 26, 2020
    Inventors: Andre Mourrier, Patrick Vaquette
  • Patent number: 10560086
    Abstract: A driver and protection circuit for driving a power switch is disclosed. The driver and protection circuit includes a fault detection block configured to detect a discrepancy between a reference drive signal and a measured voltage at a gate of the power switch. The driver and protection circuit also includes a short circuit detection block configured to detect a gate-to-source short circuit or a gate-to-drain short circuit of the power switch. The driver and protection circuit further includes a latch coupled to the fault detection block and the short circuit detection block to selectively turn off an output driver coupled to the gate of the power switch when a fault or a short circuit is detected, and wherein the latch is configured to send a diagnostic signal when the fault or the short circuit is detected.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: February 11, 2020
    Assignee: Infineon Technologies Americas Corp.
    Inventors: Andre Mourrier, Vincent Thiery, Vincent Laville, Loic Bourguine
  • Publication number: 20190386480
    Abstract: Circuits, systems and methods are provided wherein a bypass circuit provides an auxiliary current path to supply current from a power supply line to an electrical load. The bypass circuit is used during a low-power mode, and consumes less quiescent power than a main current path that provides current from the power supply line to the electrical load during normal operation. The bypass circuit includes a current limiter and a comparator, and generates a high-current detection signal responsive to the comparator detecting that a current through the current limiter exceeds a maximum allowed or expected current.
    Type: Application
    Filed: June 13, 2018
    Publication date: December 19, 2019
    Inventors: Andre Mourrier, Kevin Thevenet
  • Patent number: 10468966
    Abstract: A circuit includes a first feedforward path configured to determine a state of a first power switch using a first gate control voltage from a gate driver and a source voltage of the first power switch, and to apply a gate driving voltage to a gate of the first power switch based on the determined state of the first power switch; and a first feedback path configured to provide a scaled value of a drain voltage of the first power switch and a scaled value of the source voltage of the first power switch to the gate driver, where the first feedforward path and the first feedback path are configured to provide a bi-directional gate interface coupled between the gate driver and the first power switch.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: November 5, 2019
    Assignee: INFINEON TECHNOLOGIES AG
    Inventors: Andre Mourrier, Patrick Vaquette
  • Publication number: 20180183426
    Abstract: A driver and protection circuit for driving a power switch is disclosed. The driver and protection circuit includes a fault detection block configured to detect a discrepancy between a reference drive signal and a measured voltage at a gate of the power switch. The driver and protection circuit also includes a short circuit detection block configured to detect a gate-to-source short circuit or a gate-to-drain short circuit of the power switch. The driver and protection circuit further includes a latch coupled to the fault detection block and the short circuit detection block to selectively turn off an output driver coupled to the gate of the power switch when a fault or a short circuit is detected, and wherein the latch is configured to send a diagnostic signal when the fault or the short circuit is detected.
    Type: Application
    Filed: February 23, 2018
    Publication date: June 28, 2018
    Inventors: Andre Mourrier, Vincent Thiery, Vincent Laville, Loic Bourguine
  • Patent number: 9906214
    Abstract: A driver and protection circuit for driving a power switch is disclosed. The driver and protection circuit includes a fault detection block configured to detect a discrepancy between a reference drive signal and a measured voltage at a gate of the power switch. The driver and protection circuit also includes a short circuit detection block configured to detect a gate-to-source short circuit or a gate-to-drain short circuit of the power switch. The driver and protection circuit further includes a latch coupled to the fault detection block and the short circuit detection block to selectively turn off an output driver coupled to the gate of the power switch when a fault or a short circuit is detected, and wherein the latch is configured to send a diagnostic signal when the fault or the short circuit is detected.
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: February 27, 2018
    Assignee: INFINEON TECHNOLOGIES AMERICAS CORP.
    Inventors: Andre Mourrier, Vincent Thiery, Vincent Laville, Loic Bourguine
  • Publication number: 20160087422
    Abstract: A driver and protection circuit for driving a power switch is disclosed. The driver and protection circuit includes a fault detection block configured to detect a discrepancy between a reference drive signal and a measured voltage at a gate of the power switch. The driver and protection circuit also includes a short circuit detection block configured to detect a gate-to-source short circuit or a gate-to-drain short circuit of the power switch. The driver and protection circuit further includes a latch coupled to the fault detection block and the short circuit detection block to selectively turn off an output driver coupled to the gate of the power switch when a fault or a short circuit is detected, and wherein the latch is configured to send a diagnostic signal when the fault or the short circuit is detected.
    Type: Application
    Filed: September 4, 2015
    Publication date: March 24, 2016
    Inventors: Andre Mourrier, Vincent Thiery, Vincent Laville, Loic Bourguine
  • Patent number: 8698440
    Abstract: According to one embodiment, a low frequency drive control circuit for use with an inductive load comprises a comparator configured to receive a high frequency signal at a first input and a smoothly varying low frequency signal for modulating the high frequency signal at a second input. The comparator is further configured to produce a pulse width modulated output of the low frequency drive control circuit for use in generating a smoothly varying low frequency load current in the inductive load. In one embodiment, the inductive load can comprise a DC brushed motor. In one embodiment, the low frequency drive control circuit can be implemented as part of an integrated circuit further comprising a switching circuit configured to use the pulse width modulated output of the comparator to generate the smoothly varying low frequency load current, which may be a substantially sinusoidal load current, for example.
    Type: Grant
    Filed: April 27, 2010
    Date of Patent: April 15, 2014
    Assignee: International Rectifier Corporation
    Inventor: Andre Mourrier
  • Patent number: 8102192
    Abstract: A gate driver for performing gate shaping on a first transistor of having gate, source, and drain terminals, the first transistor being selected from a switching stage of a power switching circuit having high- and low-side transistors series connected at a switching node for driving a load. The gate driver includes the following steps: upon receipt of an ON pulse pre-charging the gate terminal until gate to source terminal voltage equals Vth, controlling the di/dt(ON) flowing in the first transistor while free wheeling current is flowing in a second transistor of the switching stage, and controlling the dv/dt(ON) of the first transistor while a charge on the gate terminal is present; and upon receipt of an OFF pulse controlling the dv/dt(OFF) of the first transistor until free wheeling current is flowing in the second transistor, and controlling the di/dt(OFF) flowing in the first transistor while the gate to source terminal voltage equals Vth.
    Type: Grant
    Filed: July 28, 2008
    Date of Patent: January 24, 2012
    Assignee: International Rectifier Corporation
    Inventors: Andre Mourrier, Kevin Thevenet
  • Publication number: 20110260668
    Abstract: According to one embodiment, a low frequency drive control circuit for use with an inductive load comprises a comparator configured to receive a high frequency signal at a first input and a smoothly varying low frequency signal for modulating the high frequency signal at a second input. The comparator is further configured to produce a pulse width modulated output of the low frequency drive control circuit for use in generating a smoothly varying low frequency load current in the inductive load. In one embodiment, the inductive load can comprise a DC brushed motor. In one embodiment, the low frequency drive control circuit can be implemented as part of an integrated circuit further comprising a switching circuit configured to use the pulse width modulated output of the comparator to generate the smoothly varying low frequency load current, which may be a substantially sinusoidal load current, for example.
    Type: Application
    Filed: April 27, 2010
    Publication date: October 27, 2011
    Applicant: INTERNATIONAL RECTIFIER CORPORATION
    Inventor: Andre Mourrier
  • Patent number: 7948296
    Abstract: A synchronous rectifier comprising a MOSFET device, and a gate driver for driving the gate of the MOSFET device, the MOSFET device comprising first and second MOSFET transistors coupled with their drain-source paths in parallel to receive an alternating current waveform for rectification by the drain-source paths of the MOSFET transistors, the first transistor having a low Rdson and the second transistor having a high Rdson whereby the apparent Rdson of the MOSFET device is increased when the current through the MOSFET device is below a threshold thereby enabling zero crossing detection.
    Type: Grant
    Filed: October 13, 2006
    Date of Patent: May 24, 2011
    Assignee: International Rectifier Corporation
    Inventors: Bruno Charles Nadd, Xavier de Frutos, Andre Mourrier
  • Patent number: 7667524
    Abstract: A method of driving a power transistor switch comprising: receiving a drive input signal; converting the drive input signal into a converted drive input signal; and providing the converted gate drive input signal to a control electrode of the switch to turn on the switch, the converted drive input signal having three regions with respect to time, each having a slope, a first region in time having a first slope up to a Miller Plateau of the switch; a second region in time having a second slope with a reduced slope compared with the first slope; and a third region having a third slope that is greater than the second slope, whereby the control electrode voltage rapidly reaches the Miller Plateau voltage, then more slowly reaches a threshold voltage of the switch and then, when the switch has substantially fully turned on, the control electrode voltage is rapidly increased. The switch delay time is also maintained substantially constant by adjusting the transistor control electrode precharge voltage.
    Type: Grant
    Filed: November 2, 2005
    Date of Patent: February 23, 2010
    Assignee: International Rectifier Corporation
    Inventors: Vincent Thierry, Bruno Nadd, Andre Mourrier
  • Publication number: 20090027096
    Abstract: A gate driver for performing gate shaping on a first transistor of having gate, source, and drain terminals, the first transistor being selected from a switching stage of a power switching circuit having high- and low-side transistors series connected at a switching node for driving a load. The gate driver includes the following steps: upon receipt of an ON pulse pre-charging the gate terminal until gate to source terminal voltage equals Vth, controlling the di/dt(ON) flowing in the first transistor while free wheeling current is flowing in a second transistor of the switching stage, and controlling the dv/dt(ON) of the first transistor while a charge on the gate terminal is present; and upon receipt of an OFF pulse controlling the dv/dt(OFF) of the first transistor until free wheeling current is flowing in the second transistor, and controlling the di/dt(OFF) flowing in the first transistor while the gate to source terminal voltage equals Vth.
    Type: Application
    Filed: July 28, 2008
    Publication date: January 29, 2009
    Inventors: Andre Mourrier, Kevin Thevenet
  • Patent number: 7382301
    Abstract: A circuit for converting a duty cycle of a pulse width modulated signal to an analog value comprising a clock signal generator for generating a clock signal, a window generation circuit for generating a window signal synchronized with the pulse width modulated signal having a window having a window start and a window termination, a counter drive circuit receiving the clock signal, the pulse width modulated signal and the window signal and producing a counter input signal, a counter circuit for counting pulses of the counter input signal and providing a counter output, a reset circuit for resetting the counter at the termination of the window; and a digital to analog converter for converting the counter output at the termination of the window to the analog value.
    Type: Grant
    Filed: October 27, 2004
    Date of Patent: June 3, 2008
    Assignee: International Rectifier Corporation
    Inventor: Andre Mourrier
  • Publication number: 20070069289
    Abstract: A synchronous rectifier comprising a MOSFET device, and a gate driver for driving the gate of the MOSFET device, the MOSFET device comprising first and second MOSFET transistors coupled with their drain-source paths in parallel to receive an alternating current waveform for rectification by the drain-source paths of the MOSFET transistors, the first transistor having a low Rdson and the second transistor having a high Rdson whereby the apparent Rdson of the MOSFET device is increased when the current through the MOSFET device is below a threshold thereby enabling zero crossing detection.
    Type: Application
    Filed: October 13, 2006
    Publication date: March 29, 2007
    Inventors: Bruno Nadd, Xavier de Frutos, Andre Mourrier
  • Patent number: 7183834
    Abstract: A synchronous rectifier comprising a MOSFET device, and a gate driver for driving the gate of the MOSFET device, the MOSFET device comprising first and second MOSFET transistors coupled with their drain-source paths in parallel to receive an alternating current waveform for rectification by the drain-source paths of the MOSFET transistors, the first transistor having a low Rdson and the second transistor having a high Rdson whereby the apparent Rdson of the MOSFET device is increased when the current through the MOSFET device is below a threshold thereby enabling zero crossing detection.
    Type: Grant
    Filed: October 10, 2003
    Date of Patent: February 27, 2007
    Assignee: International Rectifier Corporation
    Inventors: Bruno Charles Nadd, Xavier de Frutos, Andre Mourrier
  • Publication number: 20060120004
    Abstract: A method of driving a power transistor switch comprising: receiving a drive input signal; converting the drive input signal into a converted drive input signal; and providing the converted gate drive input signal to a control electrode of the switch to turn on the switch, the converted drive input signal having three regions with respect to time, each having a slope, a first region in time having a first slope up to a Miller Plateau of the switch; a second region in time having a second slope with a reduced slope compared with the first slope; and a third region having a third slope that is greater than the second slope, whereby the control electrode voltage rapidly reaches the Miller Plateau voltage, then more slowly reaches a threshold voltage of the switch and then, when the switch has substantially fully turned on, the control electrode voltage is rapidly increased. The switch delay time is also maintained substantially constant by adjusting the transistor control electrode precharge voltage.
    Type: Application
    Filed: November 2, 2005
    Publication date: June 8, 2006
    Inventors: Vincent Thiery, Bruno Nadd, Andre Mourrier
  • Patent number: 7012393
    Abstract: A motor drive comprising a first power semiconductor switching device having a pair of main current carrying terminals, the main current carrying terminals being coupled in series with a motor load; a first current control loop, the current control loop having a current sensor for the switching device for controlling the current through the switching device; a current limiting circuit driving the first current control loop to maintain the current in the switching device at a desired level, the current limiting circuit having first and second inputs; a speed regulation circuit having a first input coupled to a speed control input and a second input coupled to a feedback voltage from the motor representing the actual motor speed, the speed regulation circuit providing an output to the first input of the current limiting circuit to drive the motor to the desired motor speed; and a power limitation circuit for limiting the power consumed by the motor to a predetermined level and providing an output to the second
    Type: Grant
    Filed: March 28, 2005
    Date of Patent: March 14, 2006
    Assignee: International Rectifier Corporation
    Inventors: Xavier De Frutos, André Mourrier, Chikyam Lee
  • Publication number: 20050231146
    Abstract: A motor drive comprising a first power semiconductor switching device having a pair of main current carrying terminals, the main current carrying terminals being coupled in series with a motor load; a first current control loop, the current control loop having a current sensor for the switching device for controlling the current through the switching device; a current limiting circuit driving the first current control loop to maintain the current in the switching device at a desired level, the current limiting circuit having first and second inputs; a speed regulation circuit having a first input coupled to a speed control input and a second input coupled to a feedback voltage from the motor representing the actual motor speed, the speed regulation circuit providing an output to the first input of the current limiting circuit to drive the motor to the desired motor speed; and a power limitation circuit for limiting the power consumed by the motor to a predetermined level and providing an output to the second
    Type: Application
    Filed: March 28, 2005
    Publication date: October 20, 2005
    Inventors: Xavier De Frutos, Andre Mourrier, Chikyam Lee
  • Publication number: 20050093730
    Abstract: A circuit for converting a duty cycle of a pulse width modulated signal to an analog value comprising a clock signal generator for generating a clock signal, a window generation circuit for generating a window signal synchronized with the pulse width modulated signal having a window having a window start and a window termination, a counter drive circuit receiving the clock signal, the pulse width modulated signal and the window signal and producing a counter input signal, a counter circuit for counting pulses of the counter input signal and providing a counter output, a reset circuit for resetting the counter at the termination of the window; and a digital to analog converter for converting the counter output at the termination of the window to the analog value.
    Type: Application
    Filed: October 27, 2004
    Publication date: May 5, 2005
    Inventor: Andre Mourrier