公开(公告)号：US20240219487A1

公开(公告)日：2024-07-04

申请号：US18392424

申请日：2023-12-21

Applicant: Melexis Technologies SA

Inventor： Guido DUPONT ,  Daniel ROSENFELD ,  Lionel TOMBEZ ,  Bruno BRAJON ,  Appo VAN DER WIEL,

IPC: G01R33/06 ,  G01R33/00 ,  G01R33/07

CPC classification number: G01R33/063 ,  G01R33/0052 ,  G01R33/0076 ,  G01R33/072

Abstract: A sensor device including a semiconductor substrate having an excitation circuit and a sensing circuit for measuring a magneto-impedance effect of a soft-magnetic component arranged on top of the semiconductor substrate. The soft-magnetic component is operatively connected to the excitation circuit and the sensing circuit, and is electrically connected to at least one of the excitation circuit and the sensing circuit by means of back contacts or side contacts. The soft-magnetic component has an elongated shape or an elongated portion extending in a first direction parallel to the semiconductor substrate; a processing circuit connected to the sensing circuit, and configured for providing a signal indicative of the measured impedance or a value derived therefrom. A method is provided for producing such a semiconductor substrate.

公开(公告)号：US20240219430A1

公开(公告)日：2024-07-04

申请号：US18537380

申请日：2023-12-12

Applicant: Melexis Technologies SA

Inventor： Simon HOUIS ,  Bruno BOURY ,  Robert RACZ

IPC: G01R15/20 ,  G01R19/00

CPC classification number: G01R15/207 ,  G01R15/202 ,  G01R19/0092 ,  G01R15/205

Abstract: A current sensor is provided for a target conductor, of a plurality of conductors. It includes at least one magnetic sensor configured to provide two signals representative of two different parameters of the field being different components or directional derivatives (e.g. a gradient) thereof. It also includes a processor configured for deriving a signal indicative of the current based on a linear combination of the first signal and the at least second signal. At least one of these signals is weighted by a coefficient, being a constant chosen in accordance with a distance, in at least the first or second direction, between the sensor and at least one conductor of the plurality. The coefficient is chosen to reduce a contribution of a parasitic magnetic field in the signal indicative of the current in the first conductor, where the parasitic magnetic field is generated by at least a further conductor.

公开(公告)号：US12007255B2

公开(公告)日：2024-06-11

申请号：US18185521

申请日：2023-03-17

Applicant: Melexis Technologies SA

Inventor： Christian Schott ,  Gael Close ,  Bruno Brajon

IPC: G01D5/14 ,  G01D5/244 ,  G01R33/09

CPC classification number: G01D5/145 ,  G01D5/244 ,  G01R33/091

Abstract: A position sensor system is arranged for determining a position of a sensor device movable along a predefined path relative to a magnetic source. The system includes the magnetic source and the sensor device. The magnetic source has a first plurality of magnetic pole pairs arranged along a first track and a second plurality of magnetic pole pairs arranged along a second track, centrelines of the tracks are spaced apart by a predefined track distance. The sensor device is configured for measuring at least two orthogonal magnetic field components at a first sensor location, and at least two second orthogonal magnetic field components at a second sensor location. The first and second sensor location are spaced apart by a predefined sensor distance smaller than the predefined track distance, in a direction transverse to the tracks.

公开(公告)号：US20240151749A1

公开(公告)日：2024-05-09

申请号：US18415296

申请日：2024-01-17

Applicant: Melexis Technologies SA

Inventor： Lucian BARBUT ,  Francis MONCHAL ,  Simon HOUIS ,  Lionel TOMBEZ

IPC: G01R15/20 ,  G01R19/32

CPC classification number: G01R15/202 ,  G01R15/205 ,  G01R19/32

Abstract: A sensor device includes a silicon substrate having an active surface; a first sensing area disposed near a first edge of the active surface of the silicon substrate such that the first sensing area has at least one first magnetic sensing element is made of a first compound semiconductor material and contact pads; and a second sensing area disposed near a second edge of the active surface of the silicon substrate, such that the second edge is substantially opposite to the first edge, such that the second sensing area has at least one second magnetic sensing element made of a second compound semiconductor material and contact pads. A processing circuit is disposed of in the silicon substrate and is electrically connected via wire bonds and/or a redistribution layer with the contact pads of the first and second sensing areas.

公开(公告)号：US20240125844A1

公开(公告)日：2024-04-18

申请号：US18486221

申请日：2023-10-13

Applicant: Melexis Technologies SA

Inventor： Lionel TOMBEZ ,  Sebastien LEROY

IPC: G01R31/28 ,  G01R31/00 ,  G01R31/64

CPC classification number: G01R31/2853 ,  G01R31/001 ,  G01R31/64

Abstract: The present invention relates to an error detection circuit or detecting an error in a connection of an electrical component. The error detection circuit comprises a control circuit, a terminal arranged to connect the electrical component, and a driving means, coupled to the terminal and arranged to be controlled by the control circuit. The driving means is arranged to drive a current on receipt of a control signal (Vctl) from the control circuit and the control circuit is further arranged to receive in response to the current a measurement signal via the terminal, to determine based on a characteristic of the measurement signal a possible error and to communicate an error signal based on the determining.

公开(公告)号：US11936176B2

公开(公告)日：2024-03-19

申请号：US17667986

申请日：2022-02-09

Applicant: Melexis Technologies SA

Inventor： Bruno Boury ,  Stephane Rauw

IPC: H02H3/08 ,  H02H1/00 ,  H02H3/05 ,  H02H9/02

CPC classification number: H02H3/08 ,  H02H1/0007 ,  H02H3/05

Abstract: A contactor includes: a first and second power terminal; a sub-circuit connected between this first and second power terminal and comprising the following three elements connected in series: an electrical conductor portion, a primary switch, and a fuse. The primary switch has a movable part driven by an actuator. The contactor further has a magnetic sensor for measuring a primary current flowing through the electrical conductor portion, and a controller connected to the magnetic sensor and to the actuator. The controller has a communication port for receiving commands. The contactor can detect whether the primary switch is actually open. The controller is configured for: (i) receiving a command to open the switch; (ii) operating the actuator, (iii) detecting if the primary switch is actually open; and (iv) blowing the fuse if the switch is not open.

公开(公告)号：US20240065112A1

公开(公告)日：2024-02-22

申请号：US18453419

申请日：2023-08-22

Applicant: Melexis Technologies SA

Inventor： Appo VAN DER WIEL

IPC: H10N59/00 ,  G01L3/10 ,  G01R15/20 ,  H01L25/16 ,  H01L23/538 ,  H01L21/56

CPC classification number: H10N59/00 ,  G01L3/102 ,  G01R15/20 ,  H01L25/16 ,  H01L23/5386 ,  H01L21/56

Abstract: A wafer-level packaged magnetic sensor device includes: a first semiconductor substrate having a processing circuit configured for receiving a plurality of sensor signals, and for determining at least one difference signal, and for providing an output signal derived from said difference signal. A plurality of sensor substrates include a second semiconductor substrate with a first magnetic sensor, and a third semiconductor substrate with a second magnetic sensor the first semiconductor substrate being arranged at a location between the plurality of sensor substrates. The substrates are electrically connected by means of at least one redistribution layer.

公开(公告)号：US20240036084A1

公开(公告)日：2024-02-01

申请号：US18483212

申请日：2023-10-09

Applicant: Melexis Technologies SA

Inventor： Simon HOUIS

IPC: G01R19/00 ,  G01R15/14

CPC classification number: G01R19/0007 ,  G01R15/148 ,  G01R33/022

Abstract: A current sensor system for accurately measuring an AC electrical current having frequencies up to 2 kHz, the system comprising: an electrical conductor (e.g. busbar) for conducting said AC current thereby creating a first magnetic field; a magnetic sensor device for measuring a magnetic field component or gradient; an object (e.g. a metal plate) having an electrically conductive surface arranged in the vicinity of said conductor for allowing eddy currents to flow in said surface, thereby creating a second magnetic field which is superimposed with the first magnetic field; wherein the magnetic sensor device is configured for determining the current as a signal or value proportional to the measured component or gradient. The metal plate may have an opening. The current sensor system may further comprise a shielding.

公开(公告)号：US20240011798A1

公开(公告)日：2024-01-11

申请号：US18350262

申请日：2023-07-11

Applicant: Melexis Technologies SA ,  Vrije Universiteit Brussel

Inventor： Leon DENIS ,  Adrian MUNTEANU ,  Illia KHVASTUNOV ,  Kristof CODDENS

IPC: G01D5/14 ,  G06N3/044 ,  G06N3/08

CPC classification number: G01D5/145 ,  G06N3/044 ,  G06N3/08

Abstract: Method of determining a position (f a sensor device movable relative to a magnetic source, or vice versa; the sensor device comprising at least two magnetic sensors; the method comprising the steps of: a) obtaining a plurality of magnetic sensor signals from said magnetic sensors; b) determining or estimating the position of the sensor device based on said plurality of sensor signals or signals derived therefrom; wherein step b) comprises: determining said position (sing an artificial neural network; the artificial neural network being a recurrent neural network trained for determining said position using at most three hundred trainable parameters per degree of freedom. A position sensor system. A position sensor device.

公开(公告)号：US11852555B2

公开(公告)日：2023-12-26

申请号：US16904162

申请日：2020-06-17

Applicant: MELEXIS TECHNOLOGIES SA

Inventor： Javier Bilbao De Mendizabal

IPC: G01L3/10 ,  G01B7/30 ,  G01D5/14 ,  G01R33/07

CPC classification number: G01L3/101 ,  G01B7/30 ,  G01D5/145 ,  G01R33/077

Abstract: A magnetic field sensor arrangement for determining a signal magnetic flux in a manner which is substantially strayfield immune, comprises: a signal magnetic field source; a first and second magnetic flux concentrator forming an air gap between exterior faces of the magnetic flux concentrators; the flux concentrators being configured for guiding a signal magnetic flux to and across the air gap in a gap direction; a magnetic field sensor arranged inside the air gap, and configured for measuring a first and second signal in the gap direction and perpendicular to the gap direction; and for reducing or eliminating an magnetic disturbance field based on the first and second signal. An angle sensor arrangement. A torque sensor. A method of measuring a signal flux, an angle, a torque in a substantially strayfield immune manner.