Patents by Inventor Guillaume De Cremoux

Guillaume De Cremoux 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: 10804794
    Abstract: A charge pump controller for controlling a charge pump adapted to convert an input voltage into an output voltage with a conversion ratio is presented. The charge pump is operable in a plurality of modes corresponding to different conversion ratios. The controller includes a first selector for selecting a mode of operation of the charge pump. The first selector comprises a first input for coupling to a voltage supply; and a second input for coupling to a source signal. The first selector identifies a target value of the output voltage. The selector calculates a product of the conversion ratio and the input voltage. The selector compares the product with the target value and selects a mode of operation of the charge pump by increasing or decreasing the conversion ratio based on the comparison. The selector maintains the conversion ratio for a length of time before decreasing the conversion ratio.
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: October 13, 2020
    Assignee: Dialog Semiconductor (UK) Limited
    Inventor: Guillaume de Cremoux
  • Patent number: 10804795
    Abstract: The proposed Power Management Integrated Circuit (PMIC) features the option to synchronize the charge-pump of a PMIC with the system clock, and then to swap and self-oscillate and skip pulses, when the digital controls of the PMIC send a first order to the charge-pump. The clock control circuitry of the PMIC also features the option for the charge-pump to then swap and use the system clock again, when the digital controls of the PMIC send a second order to the charge-pump. The designed transition of the clock from clock sync-mode to self-oscillate, and from self-oscillate back to clock sync-mode, does not present any phase discontinuity.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: October 13, 2020
    Assignee: Dialog Semiconductor (UK) Limited
    Inventor: Guillaume de Cremoux
  • Patent number: 10778094
    Abstract: A charge pump controller for controlling a charge pump adapted to convert an input voltage into an output voltage with a conversion ratio is presented. The charge pump is operable in a plurality of modes corresponding to different conversion ratios. The controller includes a first selector for selecting a mode of operation of the charge pump. The first selector comprises a first input for coupling to a voltage supply; and a second input for coupling to a source signal. The first selector identifies a target value of the output voltage. The selector calculates a product of the conversion ratio and the input voltage. The selector compares the product with the target value and selects a mode of operation of the charge pump by increasing or decreasing the conversion ratio based on the comparison. The selector maintains the conversion ratio for a length of time before decreasing the conversion ratio.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: September 15, 2020
    Assignee: Dialog Semiconductor (UK) Limited
    Inventor: Guillaume de Cremoux
  • Patent number: 10686372
    Abstract: A power supply is disclosed. The power supply includes a switching converter for providing an output voltage comprising a power switch coupled to a driver for driving the power switch with an on-off switching cycle; and a voltage threshold indicator. The voltage threshold indicator includes an input for receiving an output of the converter, and an output coupled to the driver. The voltage threshold indicator is adapted to provide a temperature compensated voltage threshold, and a control signal to control the on-off switching cycle. The control signal is adapted such that when the output voltage exceeds the temperature compensated voltage threshold, a value of the control signal changes.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: June 16, 2020
    Assignee: Dialog Semiconductor (UK) Limited
    Inventors: Guillaume de Cremoux, Andrew Notman, Vladislav Vasilev
  • Publication number: 20200127560
    Abstract: A charge pump controller for controlling a charge pump adapted to convert an input voltage into an output voltage with a conversion ratio is presented. The charge pump is operable in a plurality of modes corresponding to different conversion ratios. The controller includes a first selector for selecting a mode of operation of the charge pump. The first selector comprises a first input for coupling to a voltage supply; and a second input for coupling to a source signal. The first selector identifies a target value of the output voltage. The selector calculates a product of the conversion ratio and the input voltage. The selector compares the product with the target value and selects a mode of operation of the charge pump by increasing or decreasing the conversion ratio based on the comparison. The selector maintains the conversion ratio for a length of time before decreasing the conversion ratio.
    Type: Application
    Filed: December 23, 2019
    Publication date: April 23, 2020
    Inventor: Guillaume de Cremoux
  • Patent number: 10622899
    Abstract: A power converter for providing an output voltage is presented. The power converter includes an inductor, a charge pump circuit and a controller. The charge pump circuit has a plurality of charge pumps; each charge pump being selectively coupled to the inductor via a coupling switch. Each charge pump is operable in at least three modes. Each mode is associated with a different conversion ratio. The controller is adapted to provide a first set of control signals to control the coupling switches; and a second set of control signals to operate the charge pump circuit. The second set of control signals is configured to operate a charge pump coupled to the inductor with a sequence of modes.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: April 14, 2020
    Assignee: Dialog Semiconductor (UK) Limited
    Inventor: Guillaume de Cremoux
  • Publication number: 20200091816
    Abstract: A charge pump controller for controlling a charge pump adapted to convert an input voltage into an output voltage with a conversion ratio is presented. The charge pump is operable in a plurality of modes corresponding to different conversion ratios. The controller includes a first selector for selecting a mode of operation of the charge pump. The first selector comprises a first input for coupling to a voltage supply; and a second input for coupling to a source signal. The first selector identifies a target value of the output voltage. The selector calculates a product of the conversion ratio and the input voltage. The selector compares the product with the target value and selects a mode of operation of the charge pump by increasing or decreasing the conversion ratio based on the comparison. The selector maintains the conversion ratio for a length of time before decreasing the conversion ratio.
    Type: Application
    Filed: September 19, 2018
    Publication date: March 19, 2020
    Inventor: Guillaume de Cremoux
  • Patent number: 10581328
    Abstract: A switch mode power supply, which functions in a continuous current mode and a discontinuous mode employing a zero crossing control circuit for determining a polarity of an inductor current and from the polarity of the inductor current, controlling an operational state of a switching section of the switch mode power supply such that the inductor current becomes approximately zero amperes at the end of each demagnetization phase of operation.
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: March 3, 2020
    Assignee: Dialog Semiconductor (UK) Limited
    Inventors: Guillaume de Cremoux, Nicolas Borfigat
  • Patent number: 10554126
    Abstract: An auto-calibrated current sensing comparator is provided. A secondary dynamic comparator shares the same inputs and acts to adjust a calibration control of the current sensing comparator. The calibration control may be in the form of adjusting the offset of the current sensing comparator or adjusting a propagation delay that is added to its output.
    Type: Grant
    Filed: October 14, 2014
    Date of Patent: February 4, 2020
    Assignees: Dialog Semiconductor GmbH, Dialog Semiconductor B.V.
    Inventors: Marinus Wilhelmus Kruiskamp, Guillaume de Cremoux
  • Publication number: 20190296641
    Abstract: A buck-boost switching converter which receives an input voltage and provides an output voltage is presented. The converter contains a first set of switches having a first power switch and a first ground switch, a second set of switches having a second power switch and a second ground switch. A controller is arranged to send control signals to the first and second set of switches. The controller is arranged such that in a buck mode, the first set of switches operates to provide buck regulation while the second power switch is held in a closed state. In a boost mode, the second set of switches operates to provide boost regulation while the first power switch is held in a closed state, and the controller is arranged to selectively operate the buck-boost switching converter in the buck mode or the boost mode based on a length of a time period.
    Type: Application
    Filed: March 20, 2018
    Publication date: September 26, 2019
    Inventor: Guillaume de Cremoux
  • Patent number: 10404173
    Abstract: A buck-boost switching converter which receives an input voltage and provides an output voltage is presented. The converter contains a first set of switches having a first power switch and a first ground switch, a second set of switches having a second power switch and a second ground switch. A controller is arranged to send control signals to the first and second set of switches. The controller is arranged such that in a buck mode, the first set of switches operates to provide buck regulation while the second power switch is held in a closed state. In a boost mode, the second set of switches operates to provide boost regulation while the first power switch is held in a closed state, and the controller is arranged to selectively operate the buck-boost switching converter in the buck mode or the boost mode based on a length of a time period.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: September 3, 2019
    Assignee: Dialog Semiconductor (UK) Limited
    Inventor: Guillaume de Cremoux
  • Patent number: 10340791
    Abstract: A method of operating a charge pump where successive values of a charge pump output voltage are measured and compared is presented. The result of the comparison is used to adjust one or more parameters of the charge pump operation A charge pump's maximum efficiency is tracked by storing and comparing successive output voltage values, with sample and hold circuitry.
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: July 2, 2019
    Assignee: Dialog Semiconductor (UK) Limited
    Inventor: Guillaume de Cremoux
  • Publication number: 20190123642
    Abstract: The proposed Power Management Integrated Circuit (PMIC) features the option to synchronize the charge-pump of a PMIC with the system clock, and then to swap and self-oscillate and skip pulses, when the digital controls of the PMIC send a first order to the charge-pump. The clock control circuitry of the PMIC also features the option for the charge-pump to then swap and use the system clock again, when the digital controls of the PMIC send a second order to the charge-pump. The designed transition of the clock from clock sync-mode to self-oscillate, and from self-oscillate back to clock sync-mode, does not present any phase discontinuity.
    Type: Application
    Filed: December 20, 2018
    Publication date: April 25, 2019
    Inventor: Guillaume de Cremoux
  • Patent number: 10256720
    Abstract: Circuits and methods to achieve a hysteretic buck-boost converter system, separating buck and boost pulses based on monitoring a difference between the output voltage of the buck-boost converter and a reference voltage (error voltage) or alternatively based on monitoring additionally coil current or load current or both currents have been disclosed. The performance of the buck-boost converter can be further improved by using an optional output voltage change block monitoring if the output voltage rises or falls. The buck-boost converter disclosed has a very simple topology without a modulator block, which is regulating the duty cycle and without frequency compensation.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: April 9, 2019
    Assignee: Dialog Semiconductor (UK) Limited
    Inventors: Kemal Ozanoglu, Guillaume de Cremoux, Pier Cavallini, Martin Faerber
  • Patent number: 10170982
    Abstract: An auto-calibrated current sensing comparator is provided. A secondary dynamic comparator shares the same inputs and acts to adjust a calibration control of the current sensing comparator. The calibration control may be in the form of adjusting the offset of the current sensing comparator or adjusting a propagation delay that is added to its output.
    Type: Grant
    Filed: October 14, 2014
    Date of Patent: January 1, 2019
    Assignees: Dialog Semiconductor GmbH, Dialog Semiconductor B.V.
    Inventors: Marinus Wilhelmus Kruiskamp, Guillaume de Cremoux
  • Patent number: 10170980
    Abstract: The proposed Power Management Integrated Circuit (PMIC) features the option to synchronize the charge-pump of a PMIC with the system clock, and then to swap and self-oscillate and skip pulses, when the digital controls of the PMIC send a first order to the charge-pump. The clock control circuitry of the PMIC also features the option for the charge-pump to then swap and use the system clock again, when the digital controls of the PMIC send a second order to the charge-pump. The designed transition of the clock from clock sync-mode to self-oscillate, and from self-oscillate back to clock sync-mode, does not present any phase discontinuity.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: January 1, 2019
    Assignee: Dialog Semiconductor (UK) Limited
    Inventor: Guillaume de Cremoux
  • Publication number: 20180287489
    Abstract: Circuits and methods to achieve a hysteretic buck-boost converter system, separating buck and boost pulses based on monitoring a difference between the output voltage of the buck-boost converter and a reference voltage (error voltage) or alternatively based on monitoring additionally coil current or load current or both currents have been disclosed. The performance of the buck-boost converter can be further improved by using an optional output voltage change block monitoring if the output voltage rises or falls. The buck-boost converter disclosed has a very simple topology without a modulator block, which is regulating the duty cycle and without frequency compensation.
    Type: Application
    Filed: March 31, 2017
    Publication date: October 4, 2018
    Inventors: Kemal Ozanoglu, Guillaume de Cremoux, Pier Cavallini, Martin Faerber
  • Publication number: 20180131273
    Abstract: A power supply is disclosed. The power supply includes a switching converter for providing an output voltage comprising a power switch coupled to a driver for driving the power switch with an on-off switching cycle; and a voltage threshold indicator. The voltage threshold indicator includes an input for receiving an output of the converter, and an output coupled to the driver. The voltage threshold indicator is adapted to provide a temperature compensated voltage threshold, and a control signal to control the on-off switching cycle. The control signal is adapted such that when the output voltage exceeds the temperature compensated voltage threshold, a value of the control signal changes.
    Type: Application
    Filed: September 22, 2017
    Publication date: May 10, 2018
    Inventors: Guillaume de Cremoux, Andrew Notman, Vladislav Vasilev
  • Publication number: 20170302173
    Abstract: The present disclosure applies to peak current limitation and also to ensuring that a minimum current condition is not exceeded, that is, that the current through a component remains at or above a desired minimum level. A current limitation circuit compensates for time-induced errors by sampling and holding a current or voltage value at the time when a power switch changes state, deriving a rate of change of the electrical parameter and extrapolating the value over time. The extrapolated value is used for subsequent post-processing such as duty cycle modification of a switching mode DC-DC converter.
    Type: Application
    Filed: April 15, 2016
    Publication date: October 19, 2017
    Inventor: Guillaume de Cremoux
  • Patent number: 9793798
    Abstract: The present disclosure applies to peak current limitation and also to ensuring that a minimum current condition is not exceeded, that is, that the current through a component remains at or above a desired minimum level. A current limitation circuit compensates for time-induced errors by sampling and holding a current or voltage value at the time when a power switch changes state, deriving a rate of change of the electrical parameter and extrapolating the value over time. The extrapolated value is used for subsequent post-processing such as duty cycle modification of a switching mode DC-DC converter.
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: October 17, 2017
    Assignee: Dialog Semiconductor (UK) Limited
    Inventor: Guillaume de Cremoux