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1. 发明申请

US20200217906A1 APPARATUS AND METHOD USING A PLURALITY OF MAGNETIC FIELD SENSITIVE DEVICES COUPLED SUCH THAT A SUM OF CURRENTS FLOWS THROUGH AT LEAST ONE OF THE MAGNETIC FIELD SENSITIVE DEVICES 审中-公开
公开(公告)号：US20200217906A1
公开(公告)日：2020-07-09
申请号：US16823661
申请日：2020-03-19
申请人： Infineon Technologies AG
发明人： Udo AUSSERLECHNER
IPC分类号： G01R33/09 , G01R33/00
摘要： 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.

2. 发明申请

US20200166583A1 HALL SENSOR DEVICES AND METHODS FOR OPERATING THE SAME 审中-公开
公开(公告)号：US20200166583A1
公开(公告)日：2020-05-28
申请号：US16778686
申请日：2020-01-31
申请人： Infineon Technologies AG
发明人： Udo AUSSERLECHNER
IPC分类号： G01R33/00 , G01R33/07
摘要： 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.

3. 发明申请

US20200166325A1 MAGNETIC ANGLE SENSOR DEVICE AND METHOD OF OPERATION 审中-公开
公开(公告)号：US20200166325A1
公开(公告)日：2020-05-28
申请号：US16777265
申请日：2020-01-30
申请人： Infineon Technologies AG
发明人： Udo AUSSERLECHNER , Wolfgang GRANIG
IPC分类号： G01B7/30 , G01R33/02 , G01D5/165 , G01D5/14 , G01B7/00 , G01R33/09
摘要： 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.

4. 发明申请

US20190154464A1 MAGNET ARRANGEMENT FOR ANGLE DETECTION 审中-公开
公开(公告)号：US20190154464A1
公开(公告)日：2019-05-23
申请号：US15818380
申请日：2017-11-20
申请人： Infineon Technologies AG
发明人： Udo AUSSERLECHNER
IPC分类号： G01D5/14
摘要： 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.

5. 发明申请

US20170219382A1 SENSOR PACKAGE 审中-公开
公开(公告)号：US20170219382A1
公开(公告)日：2017-08-03
申请号：US15370491
申请日：2016-12-06
申请人： Infineon Technologies AG
发明人： Udo AUSSERLECHNER
IPC分类号： G01D5/16 , G01R33/00
CPC分类号： G01D5/16 , G01D5/145 , G01R33/0047 , G01R33/0385
摘要： 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.

6. 发明申请

US20220057281A1 INDUCTIVE TORQUE SENSOR FOR ROTATING SHAFTS 有权
公开(公告)号：US20220057281A1
公开(公告)日：2022-02-24
申请号：US16996073
申请日：2020-08-18
申请人： Infineon Technologies AG
发明人： Udo AUSSERLECHNER
IPC分类号： G01L3/10 , G01D5/20 , G01B7/30
摘要： The described techniques are directed to inductive torque sensors that implement independent target coil and pickup coil systems. By utilizing the various principles of inductive angle sensors, and as a result of the specific physical arrangement of target coils, the inductive torque sensor may independently obtain a rotational position (i.e., mechanical angle) of the rotatable input shaft via one pickup coil system, and a rotational position (i.e., mechanical angle) of the rotatable output shaft via another pickup coil system. Combiner circuitry is also provided to calculate the torsion angle using the signals induced in each of two separate pickup coil systems. By using different k-fold symmetry periodicities in the target coils with respect to the coil configurations, the inductive torque sensor advantageously reduces or eliminates mutual coupling between the different target coil systems and provide robustness to stray or external electromagnetic fields.

7. 发明申请

US20210389392A1 APPARATUS AND METHOD USING A PLURALITY OF MAGNETIC FIELD SENSITIVE DEVICES COUPLED SUCH THAT MULTIPLE CURRENTS FLOW THROUGH AT LEAST ONE OF THE MAGNETIC FIELD SENSITIVE DEVICES 有权
公开(公告)号：US20210389392A1
公开(公告)日：2021-12-16
申请号：US17462475
申请日：2021-08-31
申请人： Infineon Technologies AG
发明人： Udo AUSSERLECHNER
IPC分类号： G01R33/09 , G01R33/00
摘要： 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.

8. 发明申请

US20210063206A1 INDUCTIVE ANGLE SENSOR 有权
公开(公告)号：US20210063206A1
公开(公告)日：2021-03-04
申请号：US17003186
申请日：2020-08-26
申请人： Infineon Technologies AG
发明人： Udo AUSSERLECHNER
IPC分类号： G01D5/22 , G01B7/30
摘要： An inductive angle sensor for determining a rotational position of a rotor relative to a stator includes an exciter coil, at least one pickup coil arrangement having an m-fold symmetry and at least one conductive target having an m-fold symmetry. The exciter coil may excite the conductive target which, in turn, may induce an induced signal in the pickup coil arrangement. A signal analysis device may determine the rotational position of the rotor based on the induced signal. The inductive angle sensor may comprise a second pickup coil arrangement having an n-fold symmetry and a second conductive target having an n-fold symmetry. The exciter coil may excite the second conductive target which, in turn, may induce a second induced signal in the second pickup coil arrangement. The signal analysis device may determine the rotational position of the rotor based on the two induced signals according to a Vernier principle.

9. 发明申请

US20200264246A1 MAGNETIC FIELD SENSOR CIRCUIT IN PACKAGE WITH MEANS TO ADD A SIGNAL FROM A COIL 审中-公开
公开(公告)号：US20200264246A1
公开(公告)日：2020-08-20
申请号：US16865992
申请日：2020-05-04
申请人： Infineon Technologies AG
发明人： Udo AUSSERLECHNER
IPC分类号： G01R33/07 , G01R33/00
摘要： Sensor devices, systems and methods are provided, including a first magnetic sensor configured to measure a first magnetic field in a first frequency range and output a first sensor signal based on the measured first magnetic field, a second magnetic sensor configured to measure a second magnetic field in a second frequency range and output a second sensor signal based on the measured second magnetic field, and a sensor circuit configured to receive the first and the second sensor signals, combine the first and the second sensor signals, and output a combined sensor signal. The first magnetic sensor and the second magnetic sensor are configured to share a cross-over frequency.

10. 发明申请

US20200225297A1 MAGNETIC FIELD SENSING 审中-公开
公开(公告)号：US20200225297A1
公开(公告)日：2020-07-16
申请号：US16740929
申请日：2020-01-13
申请人： Infineon Technologies AG
发明人： Udo AUSSERLECHNER
IPC分类号： G01R33/00 , G01R33/07 , G01R33/09
摘要： A sensing element is provided including a magnetic sensor that detects a first magnetic field component, at least one AC-magnetic field generator that applies at least one additional magnetic field component at a given frequency to the magnetic sensor, where the first magnetic field component and the at least one additional magnetic field component are orthogonal to each other, and at least one demodulator using the given frequency to determine a sensitivity of the sensing element respective to the at least one additional magnetic field component. Also, several methods of operating such sensing element are provided.

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