Patents by Inventor Andrea LAMPREDI

Andrea LAMPREDI 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).

  • Short circuit detection and limiting channel current in transistor before turn off in short circuit condition
    Patent number: 11916544
    Abstract: A method for driving a power transistor includes comparing a measurement signal that is representative of a load current to a comparator threshold that corresponds to an overcurrent threshold; generating a first fault signal when the measurement signal exceeds the comparator threshold for a first time interval; generating a second fault signal when the measurement signal exceeds the comparator threshold for a second time interval that is greater than the first time interval; regulating a control voltage provided to the control terminal of the transistor to turn off the transistor in response to the second fault signal; and in response to the first fault signal, adjusting the control voltage to an adjusted voltage level in order to limit the load current to a reduced current level that is preconfigured to be greater than the overcurrent threshold. The adjusted voltage level is sufficient to maintain the power transistor in an on-state.
    Type: Grant
    Filed: March 1, 2022
    Date of Patent: February 27, 2024
    Assignee: Infineon Technologies Austria AG
    Inventors: Sergio Morini, Andrea Lampredi, Salviano Marino, Daniele Miatton
  • Short circuit detection and limiting channel current in transistor before turn off in short circuit condition
    Patent number: 11799465
    Abstract: A method for driving a power transistor includes comparing a measurement signal that is representative of a load current to a comparator threshold that corresponds to an overcurrent threshold; generating a first fault signal when the measurement signal exceeds the comparator threshold for a first time interval; generating a second fault signal when the measurement signal exceeds the comparator threshold for a second time interval that is greater than the first time interval; regulating a control voltage provided to the control terminal of the transistor to turn off the transistor in response to the second fault signal; and in response to the first fault signal, adjusting the control voltage to an adjusted voltage level in order to limit the load current to a reduced current level that is preconfigured to be greater than the overcurrent threshold. The adjusted voltage level is sufficient to maintain the power transistor in an on-state.
    Type: Grant
    Filed: March 1, 2022
    Date of Patent: October 24, 2023
    Assignee: Infineon Technologies Austria AG
    Inventors: Sergio Morini, Andrea Lampredi, Salviano Marino, Daniele Miatton
  • SHORT CIRCUIT DETECTION AND LIMITING CHANNEL CURRENT IN TRANSISTOR BEFORE TURN OFF IN SHORT CIRCUIT CONDITION
    Publication number: 20230283273
    Abstract: A method for driving a power transistor includes comparing a measurement signal that is representative of a load current to a comparator threshold that corresponds to an overcurrent threshold; generating a first fault signal when the measurement signal exceeds the comparator threshold for a first time interval; generating a second fault signal when the measurement signal exceeds the comparator threshold for a second time interval that is greater than the first time interval; regulating a control voltage provided to the control terminal of the transistor to turn off the transistor in response to the second fault signal; and in response to the first fault signal, adjusting the control voltage to an adjusted voltage level in order to limit the load current to a reduced current level that is preconfigured to be greater than the overcurrent threshold. The adjusted voltage level is sufficient to maintain the power transistor in an on-state.
    Type: Application
    Filed: March 1, 2022
    Publication date: September 7, 2023
    Applicant: Infineon Technologies Austria AG
    Inventors: Sergio MORINI, Andrea LAMPREDI, Salviano MARINO, Daniele MIATTON