Patents by Inventor Luca Petruzzi

Luca Petruzzi 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: 11177730
    Abstract: An apparatus such as a DC-DC power converter including a switch, an ON-time controller, and a compensator operates in a constant ON-time control mode. Over multiple control cycles, the ON-time controller controls an ON-time duration of activating the switch and generation of an output voltage to power a dynamic load. The compensator, in communication with the ON-time controller, adjusts the ON-time duration of activating the switch depending on a magnitude of output current delivered by the output voltage to the dynamic load. For example, during heavier load conditions when the dynamic load consumes a higher amount of current, and in which internal resistive losses of the power supply become more substantial, the compensator increases the ON-time duration of activating the switch, resulting in operation of the power supply and switch closer to a desired frequency setpoint.
    Type: Grant
    Filed: October 17, 2019
    Date of Patent: November 16, 2021
    Assignee: Infineon Technologies Austria AG
    Inventors: Keng Chen, Luca Petruzzi
  • Publication number: 20210247788
    Abstract: A power supply includes a voltage converter to produce an output voltage to power a load. The power supply further includes a reference voltage generator and a controller. The reference voltage generator is operative to generate a floor reference voltage that varies as a function of the output voltage depending on a setting of one or more adjustable (programable) resistor-capacitor paths in the floor reference voltage generator. The controller produces control signals to control the voltage converter as a function of the floor reference voltage and the output voltage.
    Type: Application
    Filed: February 6, 2020
    Publication date: August 12, 2021
    Inventors: Keng Chen, Luca Petruzzi
  • Publication number: 20210119524
    Abstract: An apparatus such as a DC-DC power converter including a switch, an ON-time controller, and a compensator operates in a constant ON-time control mode. Over multiple control cycles, the ON-time controller controls an ON-time duration of activating the switch and generation of an output voltage to power a dynamic load. The compensator, in communication with the ON-time controller, adjusts the ON-time duration of activating the switch depending on a magnitude of output current delivered by the output voltage to the dynamic load. For example, during heavier load conditions when the dynamic load consumes a higher amount of current, and in which internal resistive losses of the power supply become more substantial, the compensator increases the ON-time duration of activating the switch, resulting in operation of the power supply and switch closer to a desired frequency setpoint.
    Type: Application
    Filed: October 17, 2019
    Publication date: April 22, 2021
    Inventors: Keng Chen, Luca Petruzzi
  • Patent number: 10756720
    Abstract: A driver circuit for an electronic switch is described herein. According to one embodiment the driver circuit includes an input buffer with an input node for receiving a buffer input signal, a pull-down circuit coupled to the input node and a ground node, and a pull-up circuit coupled to the input node and a supply node. The driver circuit further includes control circuitry configured to activate either the pull-down circuit or the pull-up circuit. The pull-up circuit is activated when the voltage level of the buffer input signal is above a first threshold, and the pull-down circuit is activated when the voltage level of the buffer input signal is below a second threshold.
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: August 25, 2020
    Assignee: Infineon Technologies AG
    Inventors: Christian Djelassi, Octavian Barbu, Markus Ladurner, Luca Petruzzi
  • Publication number: 20200220448
    Abstract: A power supply includes a reference voltage generator, a power supply phase, and an adjustor. During operation, the reference voltage generator produces a reference voltage. The power supply phase produces an output voltage to power a load as a function of an output voltage feedback signal derived from the output voltage and the reference voltage. The adjustor adjusts a magnitude of the reference voltage to maintain regulation of the output voltage with respect to a desired voltage setpoint.
    Type: Application
    Filed: March 17, 2020
    Publication date: July 9, 2020
    Inventors: Keng Chen, Luca Petruzzi
  • Patent number: 10651797
    Abstract: An apparatus includes a first amplifier, a second amplifier, and a compensation-setting generator to generate a first amplifier compensation setting and second amplifier compensation setting. A controller is operable to: i) apply the first amplifier compensation setting to the first amplifier and apply the second amplifier compensation setting to the second amplifier. The controller is further operable to switch between generating updates to the first amplifier compensation setting and the second amplifier compensation setting.
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: May 12, 2020
    Assignee: Infineon Technologies Austria AG
    Inventors: Keng Chen, Luca Petruzzi
  • Patent number: 10637342
    Abstract: A power supply includes a reference voltage generator, a power supply phase, and an adjustor. During operation, the reference voltage generator produces a reference voltage. The power supply phase produces an output voltage to power a load as a function of an output voltage feedback signal derived from the output voltage and the reference voltage. The adjustor adjusts a magnitude of the reference voltage to maintain regulation of the output voltage with respect to a desired voltage setpoint.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: April 28, 2020
    Assignee: Infineon Technologies Austria AG
    Inventors: Keng Chen, Luca Petruzzi
  • Publication number: 20200007021
    Abstract: A power supply includes a reference voltage generator, a power supply phase, and an adjustor. During operation, the reference voltage generator produces a reference voltage. The power supply phase produces an output voltage to power a load as a function of an output voltage feedback signal derived from the output voltage and the reference voltage. The adjustor adjusts a magnitude of the reference voltage to maintain regulation of the output voltage with respect to a desired voltage setpoint.
    Type: Application
    Filed: June 29, 2018
    Publication date: January 2, 2020
    Inventors: Keng Chen, Luca Petruzzi
  • Patent number: 10454469
    Abstract: An embodiment method includes detecting an inverse current condition at a switch, and driving a node associated with a switch driver driving the switch to a predetermined voltage in response to the detection of an inverse current condition at the switch. An embodiment switch device includes a switch driver configured to be coupled to a control terminal of a switch, an inverse current detector configured to detect an inverse current condition at the first and second load terminals of the switch, and a voltage driver configured to drive a node associated with the switch driver to a predetermined voltage in response to the inverse current detector detecting an inverse current condition.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: October 22, 2019
    Assignee: Infineon Technologies AG
    Inventors: Francesca Romano, Alexander Mayer, Luca Petruzzi
  • Publication number: 20190312551
    Abstract: An apparatus includes a first amplifier, a second amplifier, and a compensation-setting generator to generate a first amplifier compensation setting and second amplifier compensation setting. A controller is operable to: i) apply the first amplifier compensation setting to the first amplifier and apply the second amplifier compensation setting to the second amplifier. The controller is further operable to switch between generating updates to the first amplifier compensation setting and the second amplifier compensation setting.
    Type: Application
    Filed: April 9, 2018
    Publication date: October 10, 2019
    Inventors: Keng Chen, Luca Petruzzi
  • Patent number: 10175711
    Abstract: In some examples, a device includes a curvature-correction circuit including a first current source configured to generate a PTAT electrical current. In some examples, the curvature-correction circuit also includes three or more programmable current sources configured to generate three or more programmable electrical currents. In some examples, the curvature-correction circuit is configured to generate a PWL electrical current based on the PTAT electrical current and the three or more programmable electrical currents. In some examples, the device also includes a reference voltage circuit configured to generate a reference voltage signal based on the PWL electrical current.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: January 8, 2019
    Assignee: Infineon Technologies AG
    Inventors: Luca Petruzzi, Anthony Candage
  • Publication number: 20180175855
    Abstract: Devices and methods related to switches are discussed. An inverse current condition may be detected, and a voltage at a node associated with a switch driver may be driven to a predetermined voltage in case of detection of an inverse current condition.
    Type: Application
    Filed: December 13, 2017
    Publication date: June 21, 2018
    Inventors: Francesca Romano, Alexander Mayer, Luca Petruzzi
  • Publication number: 20180109251
    Abstract: A driver circuit for an electronic switch is described herein. According to one embodiment the driver circuit includes an input buffer with an input node for receiving a buffer input signal, a pull-down circuit coupled to the input node and a ground node, and a pull-up circuit coupled to the input node and a supply node. The driver circuit further includes control circuitry configured to activate either the pull-down circuit or the pull-up circuit. The pull-up circuit is activated when the voltage level of the buffer input signal is above a first threshold, and the pull-down circuit is activated when the voltage level of the buffer input signal is below a second threshold.
    Type: Application
    Filed: October 17, 2016
    Publication date: April 19, 2018
    Inventors: Christian Djelassi, Octavian Barbu, Markus Ladurner, Luca Petruzzi
  • Patent number: 9887532
    Abstract: Devices and methods comprising a switch and an overload detection are disclosed. When an overload detection is detected, a first retry scheme followed by a second retry scheme different from the first retry scheme may be applied. If the overload condition persists, the switch may be disabled.
    Type: Grant
    Filed: January 14, 2015
    Date of Patent: February 6, 2018
    Assignee: Infineon Technologies AG
    Inventors: Christian Djelassi, Hans-Peter Kreuter, Robert Illing, Alexander Mayer, Luca Petruzzi, Bernhard Auer, Markus Ladurner, Alberto Zanardi
  • Patent number: 9843319
    Abstract: According to an embodiment, a fault protection system includes a first power supply terminal, a second power supply terminal, an error circuit configured to receive a power supply signal, and a power supply circuit coupled to the error circuit, the first power supply terminal, and the second power supply terminal. The power supply circuit is configured to provide the power supply signal from the first power supply terminal during a first operation mode and provide the power supply signal from the second power supply terminal during a second operation mode.
    Type: Grant
    Filed: February 24, 2015
    Date of Patent: December 12, 2017
    Assignee: INFINEON TECHNOLOGIES AG
    Inventors: Luca Petruzzi, Bernhard Schaffer, Florian Brugger, Mario Tripolt
  • Patent number: 9608428
    Abstract: Techniques are described for determining whether a switch circuit experienced one of a latched overload condition and an open load with no input voltage condition. In the techniques, a first diagnostic signal is output if the switch circuit experienced the latched overload condition. Also, in the techniques, a second, different diagnostic signal is output if the switch circuit experienced the open load with no input voltage condition.
    Type: Grant
    Filed: January 20, 2014
    Date of Patent: March 28, 2017
    Assignee: Infineon Technologies Austria AG
    Inventors: Luca Petruzzi, Stephane Fraisse, Robert Illing
  • Patent number: 9594097
    Abstract: A circuit arrangement for measuring a load current provided to a load via a first load terminal of a load transistor is disclosed. In accordance with one example of the invention, the circuit arrangement includes a sense transistor coupled to the load transistor to provide a sense current representing the load current at a first load terminal of the sense transistor. The first load terminals of the load and the sense transistors are at respective floating electric potentials. A floating sense circuit coupled between the load terminals of sense transistor and load transistor, at least in one mode of operation the sense circuit receives the sense current and provides a floating signal representing the sense current. A non-floating measurement circuit is coupled to the sense circuit via a DC decoupling capacitor for transferring the floating signal representing the sense current to the non-floating measurement circuit.
    Type: Grant
    Filed: June 16, 2014
    Date of Patent: March 14, 2017
    Assignee: Infineon Technologies AG
    Inventors: Peter Bogner, Luca Petruzzi
  • Patent number: 9590091
    Abstract: According to an embodiment of a semiconductor device, the semiconductor device includes a power device well in a semiconductor substrate, a logic device well in the substrate and spaced apart from the power device well by a separation region of the substrate, and a minority carrier conversion structure including a first doped region of a first conductivity type in the separation region, a second doped region of a second conductivity type in the separation region and a conducting layer connecting the first and second doped regions. The second doped region includes a first part interposed between the first doped region and the power device well and a second part interposed between the first doped region and the logic device well.
    Type: Grant
    Filed: August 22, 2014
    Date of Patent: March 7, 2017
    Assignee: Infineon Technologies AG
    Inventors: Adrian Finney, Paolo Del Croce, Luca Petruzzi, Norbert Krischke
  • Patent number: 9472948
    Abstract: A semiconductor device is disclosed. In one embodiment a semiconductor device includes a semiconductor chip including a substrate, a ground terminal configured to be provided with a reference potential and a supply terminal electrically coupled to the substrate, the supply terminal configured to be provided with a load current and configured to be provided with a supply voltage between the substrate and the ground terminal. The semiconductor device further comprises an overvoltage protection circuit disposed in the semiconductor chip and coupled between the supply terminal and the ground terminal, the overvoltage protection circuit including a first transistor having a load current path coupled between the supply terminal and an internal ground node and a second transistor having a load current path coupled between the internal ground node and the ground terminal.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: October 18, 2016
    Assignee: Infineon Technologies AG
    Inventor: Luca Petruzzi
  • Publication number: 20160248242
    Abstract: According to an embodiment, a fault protection system includes a first power supply terminal, a second power supply terminal, an error circuit configured to receive a power supply signal, and a power supply circuit coupled to the error circuit, the first power supply terminal, and the second power supply terminal. The power supply circuit is configured to provide the power supply signal from the first power supply terminal during a first operation mode and provide the power supply signal from the second power supply terminal during a second operation mode.
    Type: Application
    Filed: February 24, 2015
    Publication date: August 25, 2016
    Inventors: Luca Petruzzi, Bernhard Schaffer, Florian Brugger, Mario Tripolt