公开(公告)号：US20210181272A1

公开(公告)日：2021-06-17

申请号：US17117312

申请日：2020-12-10

Applicant: Infineon Technologies AG

Inventor： Yongjia LI ,  Umberto ARACRI ,  Mario MOTZ

IPC: G01R33/07 ,  H03F1/02 ,  G01R33/54

Abstract: Signal processing circuit for a Hall sensor and signal processing method. Signal processing circuits for four-phase spinning Hall magnetic field sensors, corresponding methods and corresponding magnetic field sensor apparatuses are provided. In this case, a correction signal (c) is generated on the basis of a first feedback signal (fb1) and a second feedback signal (fb2), wherein the first feedback signal (fb1) is provided with a shorter signal propagation time than the second feedback signal (fb2).

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：US20210344315A1

公开(公告)日：2021-11-04

申请号：US17302435

申请日：2021-05-03

Applicant: Infineon Technologies AG

Inventor： Mario MOTZ ,  Umberto ARACRI

IPC: H03F3/38 ,  G01R33/07

Abstract: Systems and methods are provided for which a chopper modulator and a chopper demodulator of a chopped apparatus having a variable chopper frequency are described. A feedback path is used to reduce ripples and/or remaining offsets as a result of the variable chopper frequency.

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.