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公开(公告)号：US10704926B2
公开(公告)日：2020-07-07
申请号：US15344997
申请日：2016-11-07
Applicant: Infineon Technologies AG
Inventor： Leo Aichriedler , Peter Slama , Udo Ausserlechner
Abstract: A sensor arrangement having a rotatable driving shaft extending along a rotation axis and comprising a bore extending from a first end face of the shaft along the rotation axis; a magnet arranged at least partially within the bore and coupled to the driving shaft, the magnet configured to generate a magnetic field within the bore; a sensor element arranged at least partially within the bore, and configured to sense a rotation of the magnetic field in response to rotation of the driving shaft; and a magneto-static shield arranged to surround the magnet and the sensor element, wherein the magneto-static shield is stationary with respect to the driving shaft.
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公开(公告)号：US10591274B2
公开(公告)日：2020-03-17
申请号：US16294305
申请日：2019-03-06
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 arrangement coupled to the shaft, where the magnetic arrangement produces a differential magnetic field comprising a plurality of diametric magnetic fields; a first magnetic angle sensor provided in the differential magnetic field and configured to generate a first signal that represents a first angle based on a first diametric magnetic field of the differential magnetic field; a second magnetic angle sensor provided in the differential magnetic field and configured to generate a second signal that represents a second angle based on a second diametric magnetic field of the differential magnetic field; 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：US10586915B2
公开(公告)日：2020-03-10
申请号：US15596017
申请日：2017-05-16
Applicant: Infineon Technologies AG
Inventor： Udo Ausserlechner
Abstract: The present disclosure relates to 3-dimensional Hall sensor devices comprising a Hall sensor element having a Hall effect region implemented in a 3-dimensional shell and comprising at least three terminals. Each terminal is connected to at least one electrical contact of the Hall effect region and each electrical contact is disposed at a different region of the 3-dimensional shell. The present disclosure further discloses spinning current/voltage schemes for offset cancellation in such 3-dimensional Hall sensor devices.
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公开(公告)号：US10551213B2
公开(公告)日：2020-02-04
申请号：US15844073
申请日：2017-12-15
Applicant: Infineon Technologies AG
Inventor： Udo Ausserlechner
Abstract: An example includes a sickle-shaped magnet arrangement, for use in determining a rotational angle of a rotatable object and is configured to co-rotate with the rotatable object around a rotational axis, includes an inner circumferential surface having an inner radius that is based on an azimuthal coordinate of the sickle-shaped magnet arrangement, an outer circumferential surface having an outer radius that is based on the azimuthal coordinate of the sickle-shaped magnet arrangement, wherein at least the inner radius or the outer radius varies based on the azimuthal coordinate; and an axial thickness between a first end of the sickle-shaped magnet arrangement and a second end of the sickle-shaped magnet arrangement, wherein the inner circumferential surface and the outer circumferential surface form a first sickle-shaped portion and a second sickle-shaped portion, wherein the first sickle-shaped portion is diametrically opposite the second sickle-shaped portion, and wherein the first sickle-shaped portion is magnetized in a first direction and the second sickle-shaped portion is magnetized in a second direction that is within a threshold angle of the first direction and different from the first direction.
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公开(公告)号：US10545179B2
公开(公告)日：2020-01-28
申请号：US15175722
申请日：2016-06-07
Applicant: Infineon Technologies AG
Inventor： Udo Ausserlechner
IPC: G01R15/20
Abstract: A current sensor chip and systems and methods for calibrating thereof are provided. The current sensor chip includes a first magnetic field sensor element configured to generate a first analog sensor signal representing a magnetic field caused by a primary current passing through an external primary conductor, an analog-to-digital converter coupled to the first magnetic field sensor element and configured to generate a digital sensor signal based on the first analog sensor signal, a digital signal processor coupled to the analog-to-digital converter to receive the digital sensor signal and configured to determine, based on the digital sensor signal and based on calibration parameters stored in memory, a corresponding current measurement signal that represents the primary current, and an external output pin coupled to the first magnetic field sensor element to receive the first analog sensor signal or an analog signal derived therefrom by analog signal processing.
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Patent Agency Ranking
公开(公告)号：US10295644B2
公开(公告)日：2019-05-21
申请号：US15585692
申请日：2017-05-03
Applicant: Infineon Technologies AG
Inventor： Udo Ausserlechner
Abstract: Embodiments relate to sensor systems and methods that can compensate for thermal EMF effects that can cause residual offset and other errors in sensor systems. In one embodiment, a sensor system comprises at least one temperature sensor arranged proximate a primary sensor element, e.g., a Hall plate in an embodiment in which the sensor system comprises a Hall-effect magnetic field sensing system, though other types of magnetic field and sensors more generally can be used in other embodiments. In another embodiment, a plurality of temperature sensors can be used, with each one arranged proximate a different sensor contact or element. In an example in which the Hall plate is operated according to a spinning operation scheme, the at least one temperature sensor can be configured to sense a temperature in each operating phase, and the individual sensed temperatures can be combined and used to provide a temperature-dependent compensation signal.
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公开(公告)号：US10247788B2
公开(公告)日：2019-04-02
申请号：US15078402
申请日：2016-03-23
Applicant: Infineon Technologies AG
Inventor： Udo Ausserlechner
Abstract: A resistive element includes a resistive region in a semiconductor substrate, a first contact structure and a second contact structure. The semiconductor substrate includes a first main surface area. The resistive region extends in a lateral direction parallel to the main surface area and in a vertical direction perpendicular to the main surface area, and includes a first piezo-resistive coefficient for a current flow in the lateral direction and a second piezo-resistive coefficient for a current flow in the vertical direction. The first contact structure contacts a portion of a first face of the resistive region and the second contact structure contacts a portion of a second face of the resistive region. The resistive element generates a current flow distribution within the resistive region having a lateral component and a vertical component that results in a piezo-resistive coefficient of the resistive element.
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公开(公告)号：US10158359B2
公开(公告)日：2018-12-18
申请号：US14955552
申请日：2015-12-01
Applicant: Infineon Technologies AG
Inventor： Sebastian Maerz , Franz Jost , Udo Ausserlechner , Jean-Marie Le Gall
IPC: H03K17/95 , H02P31/00 , H01L43/06 , H01L43/04 , H05B33/08 , H01L25/16 , H03K17/082 , H03K17/90 , H03K17/08
Abstract: Embodiments relate to integrated magnetic field sensor-controlled switch devices, such as transistors, current sources, and power switches, among others. In an embodiment, a magnetic switch and a load switch are integrated in a single integrated circuit device. In embodiments, the magnetic switch is configured to sense a dynamic change in magnetic field caused by movement of a magnet in at least one of a linear, three-dimensional, and rotational direction.
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公开(公告)号：US09983238B2
公开(公告)日：2018-05-29
申请号：US14281228
申请日：2014-05-19
Applicant: Infineon Technologies AG
Inventor： Udo Ausserlechner
CPC classification number: G01R19/0092 , G01R15/202 , G01R15/207 , G01R33/07 , G01R33/072 , H01L43/04
Abstract: Current sensors, conductors and methods are disclosed. In an embodiment, a magnetic current sensor comprises a conductor comprising a first sheet metal layer having a first thickness and comprising at least one hole, and a second sheet metal layer having a second thickness less than the first thickness and comprising at least one notch, the second sheet metal layer being coupled to the first sheet metal layer such that the at least one hole of the first sheet metal layer at least partially overlaps with the at least one notch of the second sheet metal layer; and an integrated circuit (IC) die comprising at least one magnetic sensor element and being coupled to the conductor such that the at least one magnetic sensor element is generally aligned with a tip of the at least one notch of the second sheet metal layer.
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公开(公告)号：US09982989B2
公开(公告)日：2018-05-29
申请号：US13944391
申请日：2013-07-17
Applicant: Infineon Technologies AG
Inventor： Udo Ausserlechner
Abstract: Embodiments relate to magnetic field angle sensors, including off-axis and on-axis sensors. In an embodiment, a magnetic field angle sensor comprises two sensor units, and each sensor unit comprises two sensor elements. The sensor units are spaced apart from one another and arranged proximate a magnet, wherein the two sensor elements of each sensor unit are responsive to the same magnetic field component induced by a magnet coupled to a shaft as the shaft rotates. In each sensor unit, a sum and a difference of the output signals of the two sensor elements can be calculated to determine a coarse estimation of a rotation angle, and a more refined estimation can be obtained by combining the coarse estimations of each sensor unit. In embodiment, the magnetic field angle sensor comprises a control unit or other circuitry to carry out this combining.
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