公开(公告)号：US20210255651A1

公开(公告)日：2021-08-19

申请号：US17246817

申请日：2021-05-03

Applicant: Infineon Technologies AG

Inventor： Mario MOTZ ,  Umberto ARACRI ,  Alessandro MICHELUTTI

IPC: G05F1/571 ,  G01K7/01 ,  G01R19/165 ,  G05F3/30

Abstract: An integrated circuit includes a first bandgap voltage reference sub-circuit configured to provide a first bandgap reference voltage; a second bandgap voltage reference sub-circuit configured to provide a second bandgap reference voltage; a voltage regulator sub-circuit configured to derive a first supply voltage using the first bandgap reference voltage and a second supply voltage using the second bandgap reference voltage; a bandgap comparator sub-circuit configured to derive a first internal voltage and a second internal voltage from the first supply voltage, wherein the first internal voltage decreases at a higher rate than the second internal voltage with respect to a decreasing first supply voltage, wherein the bandgap comparator sub-circuit is configured indicate which of the first and the second internal voltages is larger; and a comparator sub-circuit configured to indicate whether a difference between the first supply voltage and the second supply voltage is larger than a predefined threshold.

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：US20180224873A1

公开(公告)日：2018-08-09

申请号：US15876315

申请日：2018-01-22

Applicant: Infineon Technologies AG

Inventor： Mario MOTZ ,  Umberto ARACRI ,  Alessandro MICHELUTTI

IPC: G05F1/571 ,  G01R19/165 ,  G05F3/30 ,  G01K7/01

CPC classification number: G05F1/571 ,  G01K7/01 ,  G01R19/16538 ,  G01R19/1659 ,  G05F3/30

Abstract: An electrical device includes a power supply circuit configured to provide a first voltage and a second voltage, and a first verification circuit configured to derive a first and a second internal voltage from the first voltage, to compare the first and second internal voltages, and to generate a first output signal based on the comparison. The electrical device includes a second verification circuit including a first input terminal for the first voltage and a second input terminal for the second voltage, and configured to compare the first and second voltages and to generate a second output signal based on the comparison. Furthermore, the electrical device includes a combination circuit configured to generate a third output signal if the first output signal or the second output signal is indicative of the first voltage or the second voltage being outside a tolerance range.