公开(公告)号：US20220137122A1

公开(公告)日：2022-05-05

申请号：US17452284

申请日：2021-10-26

Applicant: Infineon Technologies AG

Inventor： Mario MOTZ ,  Florian BRUGGER ,  Carlos Humberto GARCIA ROJAS ,  Francesco POLO ,  Tobias WERTH

IPC: G01R31/28 ,  H02H1/00 ,  G01R31/00 ,  G01D5/20

Abstract: The present disclosure relates to circuits for detecting a line short circuit and/or a line interruption in a differentially operated line network, comprising at least one control circuit configured to control at least one common-mode signal of the differentially operated line network vis-à-vis a predefined common-mode signal variable and to indicate a line short circuit and/or a line interruption in the differentially operated line network if at least one control or controlled variable of the control circuit exceeds a predefined threshold value.

公开(公告)号：US20240151784A1

公开(公告)日：2024-05-09

申请号：US18493535

申请日：2023-10-24

Applicant: Infineon Technologies AG

Inventor： Edwin Mario MOTZ ,  Francesco POLO

IPC: G01R33/07 ,  G01R33/00 ,  H03F1/30

CPC classification number: G01R33/07 ,  G01R33/0029 ,  G01R33/0082 ,  H03F1/30

Abstract: The present disclosure relates to a current sensor, including a magnetic-field sensor for measuring a magnetic field induced by an electrical current; an output connection for providing an amplified measurement signal from the magnetic-field sensor, the magnetic-field sensor and the output connection being connected by an analog signal path having at least one amplifier, the analog signal path having a frequency response; a temperature sensor for measuring a temperature; and a compensation circuit which is coupled to the analog signal path and is configured to correct the frequency response of the analog signal path based on the temperature.

公开(公告)号：US20250141417A1

公开(公告)日：2025-05-01

申请号：US18894255

申请日：2024-09-24

Applicant: Infineon Technologies AG

Inventor： Alessandro MICHELUTTI ,  Diego LUNARDINI ,  Edwin Mario MOTZ ,  Francesco POLO

IPC: H03F3/45 ,  G01R15/18 ,  H03H7/06

Abstract: The present disclosure proposes a coil sensor circuit including a sensor coil configured to provide an AC sensor signal, a feedforward amplifier stage configured to amplify the AC sensor signal to obtain an amplified sensor signal, a feedback amplifier stage coupled between an output and an input of the feedforward amplifier stage and configured to provide a control signal for cancelling a DC offset of the feedforward amplifier stage, and a switching circuit The switching circuit is configured to, during a first operational mode of the coil sensor circuit, couple the sensor coil to the input of the feedforward amplifier stage, and, during a second operational mode of the coil sensor circuit, decouple the sensor coil from the feedforward amplifier stage, and increase a gain of the coil sensor circuit with respect to the first operational mode.

公开(公告)号：US20220374037A1

公开(公告)日：2022-11-24

申请号：US17740589

申请日：2022-05-10

Applicant: Infineon Technologies AG

Inventor： Mario MOTZ ,  Francesco POLO

IPC: G05F3/26 ,  H03F3/45

Abstract: A bandgap reference circuit includes a bandgap reference core circuit that includes a first bipolar transistor having a first emitter current density and a first base-emitter voltage, a second bipolar transistor having a second emitter current density that is smaller than the first emitter current density and having a second base-emitter voltage, a resistor that is connected to the emitter of the second bipolar transistor, and a differential amplifier circuit that is configured to control first and second emitter currents through the first and second bipolar transistors, respectively, such that a sum of the second base-emitter voltage and a voltage drop across the resistor approximates the first base-emitter voltage. The bandgap reference circuit further includes a first replica bipolar transistor that emulates an operating point of the first bipolar transistor and a second replica bipolar transistor that emulates an operating point of the second bipolar transistor.