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公开(公告)号：US20230384352A1
公开(公告)日：2023-11-30
申请号：US17804654
申请日：2022-05-31
Applicant: Allegro MicroSystems, LLC
Inventor： Loïc André Messier , Simon E. Rock , Yannick Vuillermet
CPC classification number: G01R15/207 , H02K11/27 , H02K2211/03
Abstract: A substrate, comprising one or more first conductive layers, one or more second conductive layers, and a dielectric material that is arranged to encapsulate, at least in part, the first conductive layers and the second conductive layers. The one or more second conductive layers are electrically coupled to the first conductive layers. The first conductive layers and the second conductive layers are arranged to form a conductor. The first conductive layers are arranged to define a first rift in the conductor.
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公开(公告)号：US20230333147A1
公开(公告)日：2023-10-19
申请号：US17659385
申请日：2022-04-15
Applicant: Allegro MicroSystems, LLC
Inventor： Loïc André Messier , Yannick Vuillermet , Andreas P. Friedrich
IPC: G01R19/165 , G01R15/18 , G01R33/07 , H05K1/18
CPC classification number: G01R19/16504 , G01R15/181 , G01R33/072 , H05K1/181 , H05K2201/10151
Abstract: A current sensor assembly can include: a coil structure having a first coil and a second coil connected in series, the coil structure configured to generate a differential magnetic field responsive to an electrical current passing through the first and second coils; a first magnetic field sensing element disposed proximate to the first coil and operable to generate a first signal responsive to the differential magnetic field passing through the first magnetic field sensing element in a first direction; a second magnetic field sensing element disposed proximate to the second coil and operable to generate a second signal responsive to the differential magnetic field passing through the second magnetic field sensing element in a second direction; and a circuit operable to subtract the first and second signals to generate a differential signal proportional to the electrical current.
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公开(公告)号：US20230332965A1
公开(公告)日：2023-10-19
申请号：US17659224
申请日：2022-04-14
Applicant: Allegro MicroSystems, LLC
Inventor： Emanuele Andrea Casu , Yannick Vuillermet , Andreas P. Friedrich
Abstract: A heterogeneous sensor system includes a magnetic field sensor and an inductive sensor. A checker is configured to receive the magnetic field sensor output signal and the inductive sensor output signal and determine whether an error has occurred based on a comparison of the magnetic field sensor output signal and the inductive sensor output signal. Targets include at least a portion that is conductive and may include a ferromagnetic portion for back biased magnetic sensing. Additional features include on axis and off axis positioning of the sensors with respect to the target, multi-track targets for absolute position sensing, angle sensing and torque sensing configurations.
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公开(公告)号：US20230251290A1
公开(公告)日：2023-08-10
申请号：US18300776
申请日：2023-04-14
Applicant: Allegro MicroSystems, LLC
Inventor： Yannick Vuillermet , Rémy Lassalle-Balier
CPC classification number: G01R15/202 , G01R19/0092
Abstract: A system, comprising: a printed circuit board; a first conductor having a first central longitudinal axis, the first conductor having a first through-hole that is formed therein; a second conductor having a second central longitudinal axis; and a first current sensor that is mounted on the printed circuit board, the first current sensor being disposed at least partially inside the first through-hole, the first current sensor including a first pair of magnetic field sensing elements, the magnetic field sensing elements in the first pair being aligned with a first alignment axis that is arranged at a first angle relative to the second central longitudinal axis, the first angle being less than 75 degrees.
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公开(公告)号：US11656250B2
公开(公告)日：2023-05-23
申请号：US17467713
申请日：2021-09-07
Applicant: Allegro MicroSystems, LLC
Inventor： Yannick Vuillermet , Loïc André Messier
CPC classification number: G01R15/207 , G01R19/0092
Abstract: A current sensor system, includes: a plurality of conductors that are integrated into a substrate, each of the plurality of conductors having a respective first through-hole formed therein and a plurality of current sensors, each of the plurality of current sensors being disposed on the substrate. Each of the plurality of current sensors is disposed above or below the respective first through-hole of a different one of the plurality of conductors, and the substrate includes a plurality of conductive traces, each coupled to at least one of the plurality of current sensors.
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Patent Agency Ranking
公开(公告)号：US20220397382A1
公开(公告)日：2022-12-15
申请号：US17344295
申请日：2021-06-10
Applicant: Allegro MicroSystems, LLC
Inventor： Yannick Vuillermet , Andreas P. Friedrich
Abstract: Methods and apparatus for prosing a sensor IC package having first and second sets of magnetic field sensing elements and a third set of magnetic field sensing elements located between the first and second positions, wherein the first, second, and third sets of magnetic field sensing elements have a first axis of sensitivity and a second axis of sensitivity, wherein the first and second axes of sensitivity are orthogonal. The sensor IC package is positioned in relation to a target comprising a two-pole magnet and the first and second axes of sensitivity are perpendicular to an axis about which the target rotates. Differential signals are processed to determine an absolute position of the target. A first secondary angle position is generated from the first and third sets of magnetic field sensing elements.
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公开(公告)号：US20210325434A1
公开(公告)日：2021-10-21
申请号：US17363700
申请日：2021-06-30
Applicant: Allegro MicroSystems, LLC
Inventor： Yannick Vuillermet , Cédric Gillet , Loïc André Messier , Xavier Blanc
Abstract: A method can use a current sensor that can include a magnetic flux concentrator along with first and second magnetic field sensing elements disposed proximate to the magnetic flux concentrator, wherein the magnetic flux concentrator is operable to influence a direction of first and second magnetic fields at the first and second magnetic field sensing elements, respectively, the first and second magnetic fields resulting from an electrical current passing through a conductor, the first and second magnetic field sensing elements operable to generate first and second signals, respectively, in response to the first and second magnetic fields, respectively, wherein the current sensor can also include a differencing circuit operable to subtract the first and second signals to generate a difference signal related to the electrical current.
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48.发明授权公开(公告)号：US11047928B2
公开(公告)日：2021-06-29
申请号：US16511101
申请日：2019-07-15
Applicant: Allegro MicroSystems, LLC
Inventor： Yannick Vuillermet , Loïc André Messier
Abstract: A current sensor is provided with one or more magnetic field sensing elements configured to generate a magnetic field signal indicative of a magnitude of a sensed magnetic field, wherein the sensed magnetic field is related to a magnitude and frequency of a current through a conductor. A signal path is responsive to the magnetic field signal and includes a compensator configured to apply a compensation factor to the magnetic field signal to generate a sensor output signal indicative of the magnitude of the current and substantially independent of a frequency of the current. The sensed magnetic field is related to the magnitude of the current by a coupling factor and the signal path is responsive to a characterization of the coupling factor over a range of frequencies of the current in order to determine the compensation factor to be applied.
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公开(公告)号：US09976876B2
公开(公告)日：2018-05-22
申请号：US14950104
申请日：2015-11-24
Applicant: ALLEGRO MICROSYSTEMS, LLC
Inventor： Ryan J. Metivier , Yannick Vuillermet
CPC classification number: G01D5/145
Abstract: Methods and apparatus for positioning a magnetic field sensor IC package having a first channel for a planar magnetic field sensing element and a second channel for vertical magnetic field sensing element in relation to an axis of a ring magnet to provide a desired phase relationship between the first and second channels. In embodiments, positioning the sensor includes an offset angle and a displacement with respect to a centerline of the ring magnet.
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公开(公告)号：US20170356763A1
公开(公告)日：2017-12-14
申请号：US15176524
申请日：2016-06-08
Applicant: Allegro MicroSystems, LLC
Inventor： Yannick Vuillermet , Cédric Gillet , Andrea Foletto , Andreas P. Friedrich
CPC classification number: F16H59/044 , G01D5/147
Abstract: Embodiments provide systems and methods for determining a position of a gear shift lever of a vehicle. A ferromagnetic target object having selected characteristics influences a magnetic field generated by a back bias magnet. A magnetic field sensor includes magnetic field sensing elements disposed proximate to the target object. Each magnetic field sensing element generates an electronic signal in response to sensed magnetic fields. The gear shift lever moves among a plurality of gears of the vehicle. The magnetic field sensor selects a set of the magnetic field sensing elements to determine a magnetic field difference based on a difference of amplitudes between the electronic signals that is related to a current position of the gear shift lever. Characteristics of the target object enable the magnetic field sensor to detect the position of the gear shift lever. The characteristics include edges proximate to a perimeter of the target object.
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