公开(公告)号：US20220099761A1

公开(公告)日：2022-03-31

申请号：US17548757

申请日：2021-12-13

Applicant: Infineon Technologies AG

Inventor： Dirk HAMMERSCHMIDT ,  Helmut KOECK ,  Andrea MONTERASTELLI ,  Tobias WERTH

IPC: G01R33/02 ,  G01R33/00

Abstract: The present disclosure relates to magnetic field sensor packages, including a sensor housing, a first sensor chip having an integrated first differential magnetic field sensor circuit, the first sensor chip being arranged in the sensor housing, and a second sensor chip having an integrated second differential magnetic field sensor circuit, the second sensor chip being arranged in the sensor housing.

公开(公告)号：US20210018577A1

公开(公告)日：2021-01-21

申请号：US17063961

申请日：2020-10-06

Applicant: Infineon Technologies AG

Inventor： Simone FONTANESI ,  Klaus GRAMBICHLER ,  Tobias WERTH

IPC: G01R33/09 ,  G01R33/025

Abstract: Magnetic field sensors and sensing methods are provided. A magnetic sensor module is configured to measure a magnetic field whose magnitude oscillates between a first extrema and a second extrema. The magnetic sensor module includes a magnetic sensor configured to generate measurement values in response to sensing the magnetic field, and a sensor circuit. The sensor circuit is configured to generate a measurement signal based on the measurement values, adjust an offset of the measurement signal according to an offset update algorithm and a first characteristic of the measurement signal, generate a pulsed output signal having pulses that are generated based on the adjusted measurement signal crossing the switching threshold, and selectively enable and disable the offset update algorithm based on a second characteristic of the measurement signal.

公开(公告)号：US20190120914A1

公开(公告)日：2019-04-25

申请号：US16165565

申请日：2018-10-19

Applicant: Infineon Technologies AG

Inventor： Dirk HAMMERSCHMIDT ,  Helmut KOECK ,  Andrea MONTERASTELLI ,  Tobias WERTH

IPC: G01R33/02

Abstract: The present disclosure relates to magnetic field sensor arrangements, including a sensor housing, a first sensor chip having an integrated first differential magnetic field sensor circuit, the first sensor chip being arranged in the sensor housing, and a second sensor chip having an integrated second differential magnetic field sensor circuit, the second sensor chip being arranged in the sensor housing.

公开(公告)号：US20170241812A1

公开(公告)日：2017-08-24

申请号：US15052239

申请日：2016-02-24

Applicant: Infineon Technologies AG

Inventor： Klaus GRAMBICHLER ,  Tobias WERTH ,  Simon HAINZ

IPC: G01D5/247

CPC classification number: G01D5/247 ,  G01D3/032

Abstract: A magnetic circuit may include a magnetic sensor. The magnetic sensor may determine an adjustment factor associated with calculating a variable switching threshold. The variable switching threshold may be a configurable switching threshold based on which the magnetic sensor provides outputs associated with a speed signal corresponding to a rotation of a tooth wheel. The magnetic sensor may provide an output, associated with the speed signal, based on the variable switching threshold.

公开(公告)号：US20210247467A1

公开(公告)日：2021-08-12

申请号：US17163803

申请日：2021-02-01

Applicant: Infineon Technologies AG

Inventor： Tobias WERTH ,  Cosmin FILIP ,  Catalina-Petruta JUGLAN ,  Silviu-Antonio PIELEANU

IPC: G01R33/00

Abstract: A magnetic field sensor apparatus includes a sensor signal generator generating a sensor signal responsive to a magnetic field. A switching level provider provides during a power up mode a switching level based on a most recently updated valid one of a first and a second value of a default switching level. If an update triggering condition occurs, the not most recently updated one of the first and second values of the default switching level is updated and the most recently updated one of the first and second values of the default switching level is maintained unchanged until a next update triggering condition occurs, so that the first and second values of the default switching level are updated alternately on consecutive triggering conditions.

公开(公告)号：US20210088602A1

公开(公告)日：2021-03-25

申请号：US16953817

申请日：2020-11-20

Applicant: Infineon Technologies AG

Inventor： Tobias WERTH ,  Catalina-Petruta JUGLAN

IPC: G01R33/00 ,  G01R33/07

Abstract: A magnetic field sensor arrangement includes a magnetic field sensor element configured to provide a sensor output signal responsive to a magnetic field, wherein the sensor output signal is representative of a magnetic field amplitude; a processing module configured to provide a processed sensor output signal representative of the sensor output signal; a switching level calculation module configured to calculate a switching level, (1) during a power up mode, based on a default switching level, and (2) during a running mode, based on the processed sensor output signal; a comparator module configured to compare the processed sensor output signal with the switching level, and to provide a comparator output signal based on the comparison; and a storage module configured to store the default switching level, provide the default switching level during the power up mode, and update the default switching level during the running mode.

公开(公告)号：US20200096577A1

公开(公告)日：2020-03-26

申请号：US16140887

申请日：2018-09-25

Applicant: Infineon Technologies AG

Inventor： Simone FONTANESI ,  Klaus GRAMBICHLER ,  Tobias WERTH

IPC: G01R33/09 ,  G01R33/025

Abstract: Magnetic field sensors and sensing methods are provided. A magnetic sensor module is configured to measure a magnetic field whose magnitude oscillates between a first extrema and a second extrema. The magnetic sensor module includes a magnetic sensor configured to generate measurement values in response to sensing the magnetic field, and a sensor circuit. The sensor circuit is configured to generate a measurement signal based on the measurement values, compare the measurement signal to a switching threshold, generate a pulsed output signal having pulses that are generated based on the measurement signal crossing the switching threshold, measure a first characteristic of the measurement signal, update an offset of the switching threshold according to an offset update algorithm based on the measured first characteristic of the measurement signal, and selectively enable and disable the offset update algorithm based on at least a second characteristic of the measurement signal.

公开(公告)号：US20200025838A1

公开(公告)日：2020-01-23

申请号：US16583854

申请日：2019-09-26

Applicant: Infineon Technologies AG

Inventor： Tobias WERTH ,  Catalina-Petruta JUGLAN

IPC: G01R33/00 ,  G01R33/07

Abstract: A magnetic field sensor arrangement includes a magnetic field sensor element configured to provide a sensor output signal responsive to a magnetic field, wherein the sensor output signal is representative of a magnetic field amplitude; a processing module configured to provide a processed sensor output signal representative of the sensor output signal; a switching level calculation module configured to calculate a switching level, (1) during a power up mode, based on a default switching level, and (2) during a running mode, based on the processed sensor output signal; a comparator module configured to compare the processed sensor output signal with the switching level, and to provide a comparator output signal based on the comparison; and a storage module configured to store the default switching level, provide the default switching level during the power up mode, and update the default switching level during the running mode.

公开(公告)号：US20190011292A1

公开(公告)日：2019-01-10

申请号：US15643073

申请日：2017-07-06

Applicant: Infineon Technologies AG

Inventor： Simon HAINZ ,  Lorenzo COCEANI ,  Tobias WERTH

IPC: G01D5/249

Abstract: A magnetic sensor may determine information, associated with a magnet wheel, that is associated with a rotational speed of the magnet wheel or a rotational direction of the magnet wheel. The magnetic sensor may determine information, associated with the magnetic sensor, that is associated with a property of the magnetic sensor. The magnetic sensor may provide a signal including the information associated with the magnet wheel and the information associated with the magnetic sensor. The signal may be provided using a pulse width modulation technique associated with at least three signal levels and at least two signal thresholds. A period of time during which the information associated with the magnetic sensor is provided may at least partially overlap a period of time during which the information associated with the magnet wheel is provided, or may be provided without a time offset from the information associated with the magnet wheel.

公开(公告)号：US20180003522A1

公开(公告)日：2018-01-04

申请号：US15622361

申请日：2017-06-14

Applicant: Infineon Technologies AG

Inventor： Mihai Alexandru IONESCU ,  Tobias WERTH

IPC: G01D5/16

CPC classification number: G01D5/16 ,  G01D5/145 ,  G01D5/2451

Abstract: A magnetic sensor device for determining a rotation direction of a magnetic component about a rotation axis is provided. The magnetic sensor device includes a bridge circuit with a first half-bridge and a second half-bridge. Each of the first half-bridge and the second half-bridge comprises at least one magnetoresistive structure. Further, the magnetic sensor device includes an evaluation circuit configured to determine the rotation direction of the magnetic component based on a phase difference between an output signal of the first half-bridge and an output signal of the second half-bridge.