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公开(公告)号：US20250076419A1
公开(公告)日：2025-03-06
申请号：US18948933
申请日：2024-11-15
Applicant: Infineon Technologies AG
Inventor： Dieter SUESS , Udo AUSSERLECHNER , Armin SATZ
Abstract: A device includes at least one layer stack including a ferromagnetic layer, at least one magnetic reference layer, and a layer arranged therebetween having a magnetic tunnel junction. The at least one magnetic reference layer has a fixed first magnetization direction, and the ferromagnetic layer has a variable second magnetization direction that is variable relative to the first magnetization direction based on a spin orbit torque effect. The device further includes a spin orbit torque conductor arranged on a first side of the layer stack adjacent to the ferromagnetic layer, and a control unit configured to provide the spin orbit torque conductor with a time-variant input signal with temporally varying polarity and at the same time to determine a conductance of the tunnel junction dependent on the time-variant input signal and, based on the conductance, to detect a magnetic field acting on the device externally.
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公开(公告)号：US20200217906A1
公开(公告)日：2020-07-09
申请号：US16823661
申请日：2020-03-19
Applicant: Infineon Technologies AG
Inventor： Udo AUSSERLECHNER
Abstract: An apparatus for magnetic field detection includes a power supply and a plurality of magnetic field sensitive devices including at least first, second, and third magnetic field sensitive devices. The first to third magnetic field sensitive devices are coupled to each other and to the power supply such that a first supply current path runs through the first magnetic field sensitive device and not through the second magnetic field sensitive device, a second supply current path runs through the second magnetic field sensitive device and not through the first magnetic field sensitive device, and the first and second current paths run through the third magnetic field sensitive device. An internal resistance of the third magnetic field sensitive device is smaller than both an internal resistance of the first magnetic field sensitive device and an internal resistance of the second magnetic field sensitive device.
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公开(公告)号：US20200166583A1
公开(公告)日：2020-05-28
申请号：US16778686
申请日：2020-01-31
Applicant: Infineon Technologies AG
Inventor： Udo AUSSERLECHNER
Abstract: A method for operating a Hall sensor device that includes a Hall effect region and a plurality of electrical contact regions configured to provide electrical signals to and from the Hall effect region using a plurality of control terminals is provided. Each electrical contact region is formed in a respective well that adjoins the Hall effect region, and each control terminal is configured to control a conductance in an associated well. The method includes selectively applying control signals to a first subset of the plurality of control terminals to form channels conducting majority carriers of a first conductivity type in the associated wells during a first operating phase; and selectively applying control signals to a different second subset of the plurality of control terminals to form channels conducting majority carriers of the first conductivity type in the associated wells during a second operating phase.
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公开(公告)号：US20200166325A1
公开(公告)日：2020-05-28
申请号：US16777265
申请日：2020-01-30
Applicant: Infineon Technologies AG
Inventor： Udo AUSSERLECHNER , Wolfgang GRANIG
Abstract: A magnetic angle sensor device and a method for operating such device is provided. The magnetic angle sensor device includes a shaft rotatable around a rotation axis; a magnetic field source coupled to the shaft; a first magnetic angle sensor configured to generate a first signal that represents a first angle based on a first diametric magnetic field from the magnetic field source applied to the first magnetic angle sensor; a second magnetic angle sensor configured to generate a second signal that represents a second angle based on a second diametric magnetic field from the magnetic field source applied to the second magnetic angle sensor; and a combining circuit configured to determine a combined rotation angle based on the first signal and on the second signal.
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公开(公告)号：US20190154464A1
公开(公告)日：2019-05-23
申请号：US15818380
申请日：2017-11-20
Applicant: Infineon Technologies AG
Inventor： Udo AUSSERLECHNER
IPC: G01D5/14
Abstract: An example includes a ring-shaped magnet arrangement for use in determining a rotational angle of a rotatable shaft, the ring-shaped magnet arrangement configured to be connected to or formed as part of the rotatable shaft for co-rotation with the rotatable shaft around a rotational axis, wherein the ring-shaped magnet arrangement includes a first ring portion including a first wedge surface, wherein the first ring portion is magnetized in a first direction; and a second ring portion, that is diametrically opposite the first ring portion, the second ring portion including a second wedge surface, wherein the first wedge surface and the second wedge surface form a wedge in a sensor facing end of the ring-shaped magnet arrangement, and wherein the second ring portion is magnetized in a second direction that is within a threshold angle of the first direction and different from the first direction, wherein the sensor facing end is axially opposite a radial end of the ring-shaped magnet arrangement, wherein the ring-shaped magnet arrangement comprises a single piece of material with an intersecting thickness corresponding to an axial distance between the radial end of the ring-shaped magnet arrangement and a base of the wedge.
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Patent Agency Ranking
公开(公告)号：US20170219382A1
公开(公告)日：2017-08-03
申请号：US15370491
申请日：2016-12-06
Applicant: Infineon Technologies AG
Inventor： Udo AUSSERLECHNER
CPC classification number: G01D5/16 , G01D5/145 , G01R33/0047 , G01R33/0385
Abstract: A device for detecting an object is suggested comprising a magnetic field sensor, a magnet that is arranged to rotate in a vicinity of the magnetic field sensor, wherein the object is movable in the vicinity of the magnet to affect the rotation of the magnet, wherein the magnetic field sensor is arranged to detect a magnetic field of the magnet. Also, a system comprising such device is provided.
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公开(公告)号：US20230194633A1
公开(公告)日：2023-06-22
申请号：US18056547
申请日：2022-11-17
Applicant: Infineon Technologies AG
Inventor： Udo AUSSERLECHNER
CPC classification number: G01R33/0017 , G01R33/0005 , G01R33/07
Abstract: The innovative concept described herein relates to a sensor chip having at least two magnetic field sensors that are arranged adjacently to one another on the sensor chip and measure perpendicularly to the chip plane, wherein at least one of the magnetic field sensors has a planar coil arranged on it that is configured to generate a magnetic field directed perpendicularly to the chip plane. A controller is able to operate the magnetic field sensors in a calibration mode, in which the planar coil generates the magnetic field. For the purpose of calibrating the magnetic field sensors, a differential measurement may be taken that involves the response signal from one magnetic field sensor being subtracted from the response signal from the other magnetic field sensor.
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公开(公告)号：US20210381817A1
公开(公告)日：2021-12-09
申请号：US17331978
申请日：2021-05-27
Applicant: Infineon Technologies AG
Inventor： Udo AUSSERLECHNER
Abstract: An inductive angle sensor includes a stator component and a rotor component that is rotatable relative thereto about an axis of rotation. The rotor component has an inductive target with k-fold symmetry. The stator component has a first single pickup coil with k-fold symmetry and a second single pickup coil with the same k-fold symmetry. The first single pickup coil is rotated around the axis of rotation in relation to the second single pickup coil. The inductive target is stretched along a first axis that runs perpendicularly to the axis of rotation so that a contour outline, as seen in plan view, of the inductive target has an elliptical shape, and the first single pickup coil is stretched along a second axis that runs perpendicularly to the axis of rotation so that a contour outline, as seen in plan view, of the first single pickup coil has an elliptical shape.
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9.发明申请公开(公告)号：US20210364272A1
公开(公告)日：2021-11-25
申请号：US17321888
申请日：2021-05-17
Applicant: Infineon Technologies AG
Inventor： Udo AUSSERLECHNER
Abstract: An inductive angle sensor includes an inductive target arrangement with -fold symmetry and a first pickup coil arrangement with -fold symmetry and a second pickup coil arrangement with -fold symmetry. A combination apparatus is designed to combine signals of the first pickup coil arrangement with signals of the second pickup coil arrangement and, on the basis thereof, to ascertain an angle-error-compensated rotation angle. The single pickup coils of the first and second pickup coil arrangements are each rotationally offset about the axis of rotation R by a geometric offset angle α relative to one another. Additionally, the entire first pickup coil arrangement is rotationally offset relative to the entire second pickup coil arrangement about the axis of rotation R by a geometric offset angle ρ.
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公开(公告)号：US20210190543A1
公开(公告)日：2021-06-24
申请号：US17247665
申请日：2020-12-18
Applicant: Infineon Technologies AG
Inventor： Udo AUSSERLECHNER , Horst THEUSS , Thomas MUELLER
IPC: G01D5/20
Abstract: The present disclosure relates to an inductive angle and/or position sensor comprising a first sensor component and a second sensor component, which is movable relative thereto, wherein the first sensor component comprises an excitation coil and a receiving coil arrangement having two or more individual receiving coils, and wherein the second sensor component comprises an inductive target. The first sensor component comprises a semiconductor chip having an integrated circuit. The sensor comprises a housing, in which the semiconductor chip is arranged. The individual receiving coils of the receiving coil arrangement are configured in at least two structured metallization layers spaced apart from one another, which are arranged within the housing and/or outside on an outer surface of the housing.
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