公开(公告)号：US10415997B2

公开(公告)日：2019-09-17

申请号：US15906136

申请日：2018-02-27

Applicant: Melexis Technologies SA

Inventor： Samuel Huber Lindenberger ,  Javier Bilbao De Mendizabal

IPC: G01D5/14 ,  G01D5/16 ,  G01D3/036 ,  G01D3/06 ,  G01D5/244

Abstract: A method of determining a position of a sensor device relative to an external magnetic field, comprises: providing currents to conductors to generate an internal magnetic field that will superimpose with the external magnetic field, measuring field components of the combined magnetic field, calculating a position based on the applied currents and/or on the measured residual magnetic field. A position sensor is provided for performing the method.

公开(公告)号：US10148237B2

公开(公告)日：2018-12-04

申请号：US15402502

申请日：2017-01-10

Applicant: Melexis Technologies SA

Inventor： Johan Raman ,  Pieter Rombouts

IPC: H03F3/387 ,  H03F3/45 ,  H03F3/00 ,  H03F3/393 ,  G01C17/28 ,  G01D5/14 ,  G01R33/07

Abstract: A semiconductor circuit comprising an input block having a first chopper providing a chopped voltage signal, a first transconductance converting said chopped voltage signal into a chopped current signal, a second chopper providing a demodulated current signal, a current integrator having an integrating capacitor providing a continuous-time signal, a first feedback path comprising: a sample-and-hold block and a first feedback block, the first feedback path providing a proportional feedback signal upstream of the current integrator. The amplification factor is at least 2. Charge stored on the integrating capacitor at the beginning of a sample period is linearly removed during one single sampling period. Each chopper operates at a chopping frequency. The sample-and-hold-block operates at a sampling frequency equal to an integer times the chopping frequency.

公开(公告)号：US20180292237A1

公开(公告)日：2018-10-11

申请号：US15944048

申请日：2018-04-03

Applicant: Melexis Technologies SA

Inventor： Javier Bilbao De Mendizabal

IPC: G01D5/244 ,  G01D5/14 ,  G01B7/30 ,  G01B7/00 ,  G01P3/487

CPC classification number: G01D5/145 ,  B62D15/0215 ,  G01B7/003 ,  G01B7/30 ,  G01D5/04 ,  G01D5/24438 ,  G01D5/24461 ,  G01P3/487

Abstract: An integrated circuit for error detection comprises an input for receiving two signals, in which a first signal is representative of a physical quantity in a first range and a second signal is representative of the physical quantity in a second range. The first range and second range are different ranges that overlap. The circuit comprises a processor configured to detect an inconsistency between the two signals by taking said first and second range into account, in which this inconsistency is indicative of an error.

公开(公告)号：US20180292233A1

公开(公告)日：2018-10-11

申请号：US15943983

申请日：2018-04-03

Applicant: Melexis Technologies SA

Inventor： Peter VANDERSTEEGEN

IPC: G01D5/14 ,  G01D5/04 ,  B62D15/02

CPC classification number: G01D5/145 ,  B62D15/0215 ,  G01B7/003 ,  G01B7/30 ,  G01D5/04 ,  G01D5/24438 ,  G01D5/24461 ,  G01P3/487

Abstract: A rotary position sensor comprises a magnetic sensor for generating two independent signals indicative of at least two different order magnetic fields, and a magnetic assembly forming a first magnetic field component having a first order at the location of the magnetic sensor, in which the first magnetic field component is rotatable relative to the magnetic sensor by receiving a first angle. The magnetic assembly is also adapted for forming a second magnetic field component having a second order, different from the first order, at the location of the magnetic sensor, in which the second magnetic field component is rotatable relative to the magnetic sensor and the first magnetic assembly by receiving a second angle. The position sensor comprises a processor for combining the two independent signals to produce a unique system state representative of the first and second angle.

公开(公告)号：US20180088153A1

公开(公告)日：2018-03-29

申请号：US15715268

申请日：2017-09-26

Applicant: X-FAB SEMICONDUCTOR FOUNDRIES AG ,  MELEXIS TECHNOLOGIES SA

Inventor： Klaus HEINRICH ,  Hartmut LIEBING ,  Andreas ROTH ,  Stefan EISENBRANDT ,  Andreas OTT ,  Bruno BOURY

IPC: G01R17/02 ,  G01R19/00

CPC classification number: G01R17/02 ,  G01R17/16 ,  G01R19/0084 ,  G01R19/0092 ,  H01L28/20 ,  H01L29/0649 ,  H01L29/0692 ,  H01L29/402 ,  H01L29/78 ,  H01L29/7838 ,  H01L29/8605

Abstract: A high-voltage sensing device providing full galvanic isolation between a high-voltage domain and a low-voltage domain, wherein the circuit topology of the device resembles that of a Wheatstone bridge, the Wheatstone bridge employing at least one voltage-controlled semiconductor resistor, wherein the circuit also comprises a reference source connected directly to the Wheatstone bridge and the device comprises a number of shielding structures to electrically isolate the high-voltage domain from the low-voltage domain.

公开(公告)号：US20180031645A1

公开(公告)日：2018-02-01

申请号：US15660337

申请日：2017-07-26

Applicant: Melexis Technologies SA

Inventor： Jan-Willem BURSSENS ,  Robert RACZ

IPC: G01R33/07 ,  H01F41/14 ,  H01F10/32 ,  H01L43/06 ,  G01R33/09 ,  G01R33/02

CPC classification number: G01R33/072 ,  G01R33/0011 ,  G01R33/0052 ,  G01R33/02 ,  G01R33/091 ,  H01F10/32 ,  H01F41/14 ,  H01L43/06

Abstract: A sensor device comprising a substrate, the substrate comprising one or more magnetic sensor elements; a first elastomeric material on top of the one or more magnetic sensor elements; a magnetic layer comprising a soft magnetic metal alloy deposited by electroplating or by sputtering on top of the first elastomeric material; and optionally a second elastomeric material on top of the magnetic layer. The substrate may be a CMOS device with IMC encapsulated between two polyimide layers. The magnetic material may be annealed at 250° C. to 295° C. using a constant or rotating magnetic field having a strength in the range from 100 to 300 mTesla. The soft magnetic alloy is arranged as Integrated Magnetic Concentrator (IMC).

公开(公告)号：US20170338016A1

公开(公告)日：2017-11-23

申请号：US15596208

申请日：2017-05-16

Applicant: Melexis Technologies SA

Inventor： Robert RACZ ,  Amalia-Ioana SPATARU

IPC: H01F3/02 ,  G01R15/20 ,  G01R19/00 ,  H01F41/02

CPC classification number: H01F3/02 ,  G01R15/207 ,  G01R19/0092 ,  H01F41/0233 ,  H01F2003/106

Abstract: A method for manufacturing a magnetic flux concentrator structure comprises the steps of: providing a first stack comprising a plurality of laminated layers, each of said laminated layers being of a first soft ferromagnetic material; providing a second stack comprising a plurality of laminated layers, each of said laminated layers being of a second soft ferromagnetic material having a different magnetic hysteresis from said first soft ferromagnetic material; annealing separately said first and said second stack; assembling said annealed first stack and said annealed second stack to obtain said magnetic flux concentrator structure.

公开(公告)号：US09810721B2

公开(公告)日：2017-11-07

申请号：US14757866

申请日：2015-12-23

Applicant: Melexis Technologies SA

Inventor： Robert Racz ,  Bruno Boury ,  Mathieu Ackermann ,  Laurent Coulot

IPC: G01R15/20 ,  G01R33/07 ,  H01L21/48 ,  H01L43/04 ,  H01L43/14 ,  H01L23/00 ,  H01L43/06 ,  H01L23/31

CPC classification number: G01R15/202 ,  G01R15/20 ,  G01R15/207 ,  H01L21/4842 ,  H01L23/3107 ,  H01L24/48 ,  H01L24/49 ,  H01L24/85 ,  H01L43/04 ,  H01L43/06 ,  H01L43/14 ,  H01L2224/48091 ,  H01L2224/48247 ,  H01L2924/00014 ,  H01L2224/45099

Abstract: A method of making a current sensor is described. The method includes providing a leadframe having a current conductor portion comprising two sections shaped such that a current to be measured flows in directions oriented obliquely or oppositely with respect to each other. Further, the method includes deforming the leadframe to lower the current conductor portion, and mounting an isolator on the current conductor portion. The method also includes mounting a semiconductor chip having a thickness of at least 0.2 mm and comprising two magnetic field sensors composed of four Hall sensors and magnetic field concentrators on the isolator, connecting the semiconductor chip and sensor terminal leads by wire bonds, packaging the semiconductor chip and parts of the leadframe in a plastic housing, and cutting a frame of the leadframe from current terminal leads and the sensor terminal leads.

公开(公告)号：US20250147116A1

公开(公告)日：2025-05-08

申请号：US19016234

申请日：2025-01-10

Applicant: Melexis Technologies SA

Inventor： Bruno BOURY ,  Asparuh GRIGOROV ,  Stephane RAUW

IPC: G01R31/392 ,  G01R15/20 ,  G01R19/165 ,  G01R31/3832

Abstract: A current sensor device for measuring a current in a conductor comprising: current sensing means comprising a magnetic sensing element for contactlessly measuring the current; amplification means arranged to act in a first and second state, said amplification means in said first and second state being arranged for amplifying a first and second signal, respectively, from said current sensing means with an adjustable first gain and a second gain and a first and second bandwidth to yield a first and second amplified signal, respectively, wherein said first gain is higher than the second gain, wherein the first gain and the second gain are larger than 1; processing means for controlling at least said first gain, for detecting an event based on at least said second amplified signal and for producing a signal indicative of said event; an output terminal arranged for outputting a signal indicative of said current based on said first amplified signal; and an output terminal arranged for outputting said signal indicative of the event.

公开(公告)号：US12287228B2

公开(公告)日：2025-04-29

申请号：US18302407

申请日：2023-04-18

Applicant: MELEXIS TECHNOLOGIES SA

Inventor： Takumi Yoshiya

IPC: G01D5/14

Abstract: A rotation angle detector includes a magnet arranged to rotate, and a magnetic detection circuit provided with a first pair of magnetic detection elements arranged to be in combination sensitive to a first magnetic field in circumferential direction to the first surface and to a second magnetic field in normal direction to the first surface and arranged away from the rotation axis, and configured to detect magnetic flux of the magnet. A second pair of magnetic detection elements are arranged to be in combination sensitive to the first magnetic field in circumferential direction to the first surface and to the second magnetic field in normal direction to the first surface. A signal processing unit is configured to output a signal representative of a rotation angle of the magnet based on outputs of the first and second pair of magnetic detection elements.