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公开(公告)号：US11435382B2
公开(公告)日：2022-09-06
申请号：US17166676
申请日：2021-02-03
Applicant: STMicroelectronics S.r.l.
Inventor： Valerio Lo Muzzo , Alberto Gussoni , Ambrogio Bogani , Fabrizio Martignoni , Mattia Fausto Moretti
IPC: G01R19/00 , G01R19/165 , H03F1/52 , H03F1/22
Abstract: A current monitoring circuit includes: an output terminal configured to be coupled to a controller; an inverter having an output coupled to the output terminal; a first transconductance amplifier having first and second inputs configured to be coupled across a sense resistive element, and an output coupled to an input of the inverter; and a current generator having a second transconductance amplifier configured to generate a reference current at an output of the current generator based on a reference voltage, the output of the current generator being coupled to the input of the inverter, where the output of the inverter is configured to be in a first state when a load current flowing through the sense resistive element is higher than a predetermined threshold, and in a second state when the load current is lower than the predetermined threshold, and where the predetermined threshold is based on the reference current.
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Patent Agency Ranking
公开(公告)号：US10928425B2
公开(公告)日：2021-02-23
申请号：US16460680
申请日：2019-07-02
Applicant: STMicroelectronics S.r.l.
Inventor： Valerio Lo Muzzo , Alberto Gussoni , Ambrogio Bogani , Fabrizio Martignoni , Mattia Fausto Moretti
IPC: G01R19/00 , G01R19/165 , H03F1/52 , H03F1/22
Abstract: A current monitoring circuit includes: an output terminal configured to be coupled to a controller; an inverter having an output coupled to the output terminal; a first transconductance amplifier having first and second inputs configured to be coupled across a sense resistive element, and an output coupled to an input of the inverter; and a current generator having a second transconductance amplifier configured to generate a reference current at an output of the current generator based on a reference voltage, the output of the current generator being coupled to the input of the inverter, where the output of the inverter is configured to be in a first state when a load current flowing through the sense resistive element is higher than a predetermined threshold, and in a second state when the load current is lower than the predetermined threshold, and where the predetermined threshold is based on the reference current.
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公开(公告)号：US12255595B2
公开(公告)日：2025-03-18
申请号：US17371368
申请日：2021-07-09
Inventor： Marco Sautto , Giona Fucili , Valerio Lo Muzzo , Kaufik Linggajaya
Abstract: In accordance with an embodiment, a method of operating a piezoelectric transducer configured to transduce mechanical vibrations into transduced electrical signals at a pair of sensor electrodes includes stimulating a resonant oscillation of the piezoelectric transducer by applying at least one pulse electrical stimulation signal to the pair of sensor electrodes; detecting, at the pair of sensor electrodes, at least one electrical signal resulting from the stimulated resonant oscillation, wherein the at least one electrical signal resulting from the stimulated resonant oscillation oscillates at a resonance frequency of the piezoelectric transducer; measuring a frequency of oscillation of the at least one electrical signal resulting from the stimulated resonant oscillation to obtain a measured resonance frequency of the piezoelectric transducer; and tuning a stopband frequency of a notch filter coupled to the piezoelectric transducer to match the measured resonance frequency of the piezoelectric transducer.
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公开(公告)号：US20220021373A1
公开(公告)日：2022-01-20
申请号：US17371368
申请日：2021-07-09
Inventor： Marco Sautto , Giona Fucili , Valerio Lo Muzzo , Kaufik Linggajaya
IPC: H03H11/04 , H01L41/113
Abstract: In accordance with an embodiment, a method of operating a piezoelectric transducer configured to transduce mechanical vibrations into transduced electrical signals at a pair of sensor electrodes includes stimulating a resonant oscillation of the piezoelectric transducer by applying at least one pulse electrical stimulation signal to the pair of sensor electrodes; detecting, at the pair of sensor electrodes, at least one electrical signal resulting from the stimulated resonant oscillation, wherein the at least one electrical signal resulting from the stimulated resonant oscillation oscillates at a resonance frequency of the piezoelectric transducer; measuring a frequency of oscillation of the at least one electrical signal resulting from the stimulated resonant oscillation to obtain a measured resonance frequency of the piezoelectric transducer; and tuning a stopband frequency of a notch filter coupled to the piezoelectric transducer to match the measured resonance frequency of the piezoelectric transducer.
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公开(公告)号：US20210156894A1
公开(公告)日：2021-05-27
申请号：US17166676
申请日：2021-02-03
Applicant: STMicroelectronics S.r.l.
Inventor： Valerio Lo Muzzo , Alberto Gussoni , Ambrogio Bogani , Fabrizio Martignoni , Mattia Fausto Moretti
IPC: G01R19/165 , H03F1/52 , H03F1/22
Abstract: A current monitoring circuit includes: an output terminal configured to be coupled to a controller; an inverter having an output coupled to the output terminal; a first transconductance amplifier having first and second inputs configured to be coupled across a sense resistive element, and an output coupled to an input of the inverter; and a current generator having a second transconductance amplifier configured to generate a reference current at an output of the current generator based on a reference voltage, the output of the current generator being coupled to the input of the inverter, where the output of the inverter is configured to be in a first state when a load current flowing through the sense resistive element is higher than a predetermined threshold, and in a second state when the load current is lower than the predetermined threshold, and where the predetermined threshold is based on the reference current.
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公开(公告)号：US20210003619A1
公开(公告)日：2021-01-07
申请号：US16460680
申请日：2019-07-02
Applicant: STMicroelectronics S.r.l.
Inventor： Valerio Lo Muzzo , Alberto Gussoni , Ambrogio Bogani , Fabrizio Martignoni , Mattia Fausto Moretti
IPC: G01R19/165 , H03F1/22 , H03F1/52
Abstract: A current monitoring circuit includes: an output terminal configured to be coupled to a controller; an inverter having an output coupled to the output terminal; a first transconductance amplifier having first and second inputs configured to be coupled across a sense resistive element, and an output coupled to an input of the inverter; and a current generator having a second transconductance amplifier configured to generate a reference current at an output of the current generator based on a reference voltage, the output of the current generator being coupled to the input of the inverter, where the output of the inverter is configured to be in a first state when a load current flowing through the sense resistive element is higher than a predetermined threshold, and in a second state when the load current is lower than the predetermined threshold, and where the predetermined threshold is based on the reference current.
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