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公开(公告)号：US10942228B2
公开(公告)日：2021-03-09
申请号：US16013559
申请日：2018-06-20
Applicant: STMicroelectronics S.r.l.
Inventor： Paolo Angelini , Roberto Pio Baorda , Danilo Karim Kaddouri
Abstract: A compensation circuit receives a sensing signal from a Hall sensor and outputs a compensated Hall sensing signal. The compensation circuit has a gain that is inversely proportional to Hall sensor drift mobility. The compensated Hall sensing signal is temperature-compensated.
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公开(公告)号：US11366140B2
公开(公告)日：2022-06-21
申请号：US17102037
申请日：2020-11-23
Applicant: STMicroelectronics S.r.l.
Inventor： Paolo Angelini , Roberto Pio Baorda , Francesco Borgioli , Marco Garbarino
IPC: G01R19/00 , H02J50/12 , G01R1/20 , G01R19/165
Abstract: A current measurement circuit, for wireless charging systems, for instance, comprises a differential input configured to have applied an input voltage sensed across a shunt resistor traversed by a current to be measured, a voltage reversal switch arrangement selectively switchable to reverse the polarity of the input voltage as applied between a first and a second voltage sensing nodes as well as a first and a second current flow line between the voltage sensing nodes and ground. A difference resistor intermediate the two current flow lines is traversed by a current which is a function of the input voltage as applied to the first and second sensing nodes via the voltage reversal switch arrangement. First and second current sensing nodes at the two current flow lines are coupled to a differential current output via a current reversal switch arrangement selectively switchable to reverse the output current polarity.
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公开(公告)号：US11256280B2
公开(公告)日：2022-02-22
申请号：US17187107
申请日：2021-02-26
Applicant: STMicroelectronics S.r.l.
Inventor： Roberto Pio Baorda , Paolo Angelini
Abstract: An embodiment voltage-current converter circuit comprises a first amplifier and a second amplifier having homologous first input nodes configured to receive a voltage signal therebetween as well as homologous second input nodes having a resistor coupled therebetween. First and second current mirror circuits are provided comprising first input transistors having their control terminal coupled to the output nodes of the amplifiers. First and second current sensing circuitry having first and second current output nodes are coupled to the current mirror output nodes of the current mirror circuits and configured to provide therebetween a current which is a function of the voltage signal between the homologous first input nodes of the amplifier.
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公开(公告)号：US20210271281A1
公开(公告)日：2021-09-02
申请号：US17187107
申请日：2021-02-26
Applicant: STMicroelectronics S.r.l.
Inventor： Roberto Pio Baorda , Paolo Angelini
Abstract: An embodiment voltage-current converter circuit comprises a first amplifier and a second amplifier having homologous first input nodes configured to receive a voltage signal therebetween as well as homologous second input nodes having a resistor coupled therebetween. First and second current mirror circuits are provided comprising first input transistors having their control terminal coupled to the output nodes of the amplifiers. First and second current sensing circuitry having first and second current output nodes are coupled to the current mirror output nodes of the current mirror circuits and configured to provide therebetween a current which is a function of the voltage signal between the homologous first input nodes of the amplifier.
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公开(公告)号：US20210165023A1
公开(公告)日：2021-06-03
申请号：US17102037
申请日：2020-11-23
Applicant: STMicroelectronics S.r.l.
Inventor： Paolo Angelini , Roberto Pio Baorda , Francesco Borgioli , Marco Garbarino
IPC: G01R19/00 , G01R19/165 , H02J50/12 , G01R1/20
Abstract: A current measurement circuit, for wireless charging systems, for instance, comprises a differential input configured to have applied an input voltage sensed across a shunt resistor traversed by a current to be measured, a voltage reversal switch arrangement selectively switchable to reverse the polarity of the input voltage as applied between a first and a second voltage sensing nodes as well as a first and a second current flow line between the voltage sensing nodes and ground. A difference resistor intermediate the two current flow lines is traversed by a current which is a function of the input voltage as applied to the first and second sensing nodes via the voltage reversal switch arrangement. First and second current sensing nodes at the two current flow lines are coupled to a differential current output via a current reversal switch arrangement selectively switchable to reverse the output current polarity.
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Patent Agency Ranking
16.发明申请公开(公告)号：US20200244168A1
公开(公告)日：2020-07-30
申请号：US16849034
申请日：2020-04-15
Applicant: STMicroelectronics S.r.l.
Inventor： Roberto Pio Baorda , Stefano Ramorini , Paolo Angelini
Abstract: A sensor comprises a first transistor comprising a first control terminal, a second transistor that is a scaled version of and connected to the first transistor and comprising a second control terminal, an operational amplifier connected to both the first and second transistors and configured to generate an intermediate signal at an output terminal, a variable current source, a current mirror, a measurement circuit, and a chopper circuit. The first and second control terminals are configured to receive a drive signal. The variable current source is configured to generate a first variable current as a function of the intermediate signal. The current mirror configured to apply a second variable current proportional to the first variable current to the second transistor. The measurement circuit is configured to generate a measurement signal indicative of current through the first transistor. The chopper circuit is configured to shift an offset of the operation amplifier.
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公开(公告)号：US20190324063A1
公开(公告)日：2019-10-24
申请号：US16380610
申请日：2019-04-10
Applicant: STMicroelectronics S.r.l.
Inventor： Roberto Pio Baorda , Stefano Ramorini , Paolo Angelini
Abstract: A sensor includes a first transistor including a first terminal and a second terminal defining a current path, and a first gate terminal configured to receive a drive signal. The sensor further includes a sensor circuit configured to generate a measurement signal indicative of a first current flowing through the first transistor. The sensor circuit includes a second transistor including a third terminal, a fourth terminal, and a second gate terminal. The third terminal is connected to the first terminal of the first transistor. The second gate terminal is configured to receive the drive signal. The second transistor is a scaled version of the first transistor. The sensor circuit further includes an operational amplifier, a variable current source, a current mirror, and a measurement circuit.
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18.发明申请公开(公告)号：US20180284939A1
公开(公告)日：2018-10-04
申请号：US15797814
申请日：2017-10-30
Applicant: STMicroelectronics S.r.l.
Inventor： Roberto Pio Baorda , Paolo Angelini , Danilo Karim Kaddouri
CPC classification number: G06F3/0416 , G05F3/262 , G06F3/044 , G06F2203/04104 , H03F3/345 , H03F3/45273 , H03F2200/91 , H03H11/025
Abstract: A differential current conveyor circuit includes two or more single-ended current conveyor stages and a common bias stage. First and second switches are set between the control terminals of the transistors in the common bias stage and a respective one of a first and a second coupling line of the single ended stages can be switched between the following: a reset state of the circuit with the transistors in the common bias stage coupled to the first and second coupling lines with the single-ended stages set to a bias condition; and a sensing state of the circuit with the transistors in the common bias stage decoupled from the first and second coupling lines, with the single-ended stages in a high impedance state with the control terminals of the input transistors of the single ended stages capacitively coupled to the input terminal.
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公开(公告)号：US20180284919A1
公开(公告)日：2018-10-04
申请号：US15689908
申请日：2017-08-29
Applicant: STMicroelectronics S.r.l.
Inventor： Danilo Karim Kaddouri , Roberto Pio Baorda , Paolo Angelini
CPC classification number: G06F3/044 , G05F3/10 , G05F3/262 , G06F3/0416 , G06F3/0418 , H03F3/347 , H03F3/45273 , H03F2200/91
Abstract: A circuit includes a first transistor having a control terminal and a current path between first and second current path terminals. A second transistor has a control terminal and a current path between first and second current path terminals. The first current path terminal of the first transistor is coupled to the first current path terminal of the second transistor at an intermediate point. A first current buffer has an input and an output. The input of the first current buffer is coupled to the second current path terminal of the first transistor. A second current buffer has an input and an output, the input of the second current buffer being coupled to the second current path terminal of the second transistor. A summation node is coupled to the outputs of the first and second current buffer.
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公开(公告)号：US10054471B2
公开(公告)日：2018-08-21
申请号：US14498966
申请日：2014-09-26
Applicant: STMICROELECTRONICS S.R.L.
Inventor： Dario Paci , Francesco Procopio , Carlo Valzasina , Paolo Angelini , Francesco Diazzi , Roberto Pio Baorda , Danilo Karim Kaddouri
CPC classification number: G01D18/00 , B81B2207/012 , B81B2207/03 , B81C99/003 , G01K13/00 , G01R33/0017 , G01R33/09 , H05B3/16
Abstract: An integrated sensor device including a first die, housing a sensor element to detect a quantity external to the sensor device and transduce the external quantity into an electrical sensing signal; a second die mechanically coupled to the first die so that the first and second dies are stacked on one another along one and the same axis; and at least one heater of a resistive type integrated in the first die and/or in the second die, having a first conduction terminal and a second conduction terminal configured to couple respective first and second conduction terminals of a signal generator for causing an electric current to flow, in use, between the first and second conduction terminals of the heater and generate heat by the Joule effect. It is possible to carry out calibration in temperature of the sensor element.
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