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公开(公告)号：US20190391185A1
公开(公告)日：2019-12-26
申请号：US16013330
申请日：2018-06-20
Applicant: Allegro MicroSystems, LLC
Inventor： Georges El Bacha , Evan Shorman , Cory Voisine , Alexander Latham , William P. Taylor
Abstract: A current sensor integrated circuit including a magnetic field sensing element, a current conductor, an insulation structure, and a power calculation circuit is configured to meet safety isolation requirements. The current sensor integrated circuit may include or be used with isolation resistors to allow for voltage from a high voltage side to be sensed at a low voltage side of the circuit. The insulation structure, current sensor package, and isolation resistors can achieve at least 500 Vrms isolation.
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公开(公告)号：US20230298779A1
公开(公告)日：2023-09-21
申请号：US17695193
申请日：2022-03-15
Applicant: Allegro MicroSystems, LLC
Inventor： Loïc André Messier , Yannick Vuillermet , Evan Shorman , Simon E. Rock , Andreas P. Friedrich
CPC classification number: H01B5/02 , H02G5/00 , G01R19/0092
Abstract: A system, comprising a bus bar having a first through-hole formed therein and a first current sensor that is disposed adjacent to the first branch. The first through-hole is arranged to define, at least in part, a first branch of the bus bar and a second branch of the bus bar. The first branch has different length and/or thickness than the second branch. The first current sensor is arranged to measure an electrical current through the bus bar.
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公开(公告)号：US20210018576A1
公开(公告)日：2021-01-21
申请号：US16512680
申请日：2019-07-16
Applicant: Allegro MicroSystems, LLC
Inventor： Alexander Latham , Evan Shorman
Abstract: A magnetic field sensor includes a substrate, a first channel comprising a first magnetic field sensing element supported by the substrate and configured to generate a first magnetic field signal indicative of a first magnetic field experienced by the first magnetic field sensing element, a second channel comprising a second magnetic field sensing element supported by the substrate and configured to generate a second magnetic field signal indicative of a second magnetic field experienced by the second magnetic field sensing element, and at least one shield configured to reduce a bandwidth of the first magnetic field by a first amount and to reduce a bandwidth of the second magnetic field by a second amount. The shield is able to act as a magnetic anti-aliasing filter for the magnetic field sensing elements, which can then be chopped or sampled.
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公开(公告)号：US20240412891A1
公开(公告)日：2024-12-12
申请号：US18794215
申请日：2024-08-05
Applicant: Allegro MicroSystems, LLC
Inventor： Loïc André Messier , Yannick Vuillermet , Evan Shorman , Simon E. Rock , Andreas P. Friedrich
Abstract: A system comprising: a conductor having a through-hole and a first notch that are formed therein, the through-hole and the first notch being arranged to define, at least in part, a first branch of the conductor, and the through-hole also being arranged to define, at least in part, a second branch of the conductor; and a current sensor that is disposed directly above the first branch of the conductor and the side of the second branch of the conductor, such that no portion of the current sensor is situated directly above the second branch.
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公开(公告)号：US11885645B2
公开(公告)日：2024-01-30
申请号：US17350045
申请日：2021-06-17
Applicant: Allegro MicroSystems, LLC
Inventor： Alexander Latham , Evan Shorman , Michael C. Doogue
IPC: G01D18/00
CPC classification number: G01D18/00
Abstract: A sensor includes a sensing element configured to generate a sensing element output signal indicative of a sensed parameter and a signal path responsive to the sensing element output signal and having at least one of an adjustable gain or an adjustable offset, wherein the signal path is configured to generate a sensor output signal indicative of the sensed parameter. A supply voltage detector is configured to generate a supply voltage signal indicative of which of a plurality of voltage ranges a supply voltage of the sensor falls within and at least one of the adjustable gain or the adjustable offset is adjustable in response to the supply voltage signal.
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Patent Agency Ranking
公开(公告)号：US20220404182A1
公开(公告)日：2022-12-22
申请号：US17350045
申请日：2021-06-17
Applicant: Allegro MicroSystems, LLC
Inventor： Alexander Latham , Evan Shorman , Michael C. Doogue
IPC: G01D18/00
Abstract: A sensor includes a sensing element configured to generate a sensing element output signal indicative of a sensed parameter and a signal path responsive to the sensing element output signal and having at least one of an adjustable gain or an adjustable offset, wherein the signal path is configured to generate a sensor output signal indicative of the sensed parameter. A supply voltage detector is configured to generate a supply voltage signal indicative of which of a plurality of voltage ranges a supply voltage of the sensor falls within and at least one of the adjustable gain or the adjustable offset is adjustable in response to the supply voltage signal.
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公开(公告)号：US12112865B2
公开(公告)日：2024-10-08
申请号：US17695193
申请日：2022-03-15
Applicant: Allegro MicroSystems, LLC
Inventor： Loïc André Messier , Yannick Vuillermet , Evan Shorman , Simon E. Rock , Andreas P. Friedrich
CPC classification number: H01B5/02 , G01R19/0092 , H02G5/00
Abstract: A system, comprising a bus bar having a first through-hole formed therein and a first current sensor that is disposed adjacent to the first branch. The first through-hole is arranged to define, at least in part, a first branch of the bus bar and a second branch of the bus bar. The first branch has different length and/or thickness than the second branch. The first current sensor is arranged to measure an electrical current through the bus bar.
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公开(公告)号：US11029373B2
公开(公告)日：2021-06-08
申请号：US16512680
申请日：2019-07-16
Applicant: Allegro MicroSystems, LLC
Inventor： Alexander Latham , Evan Shorman
Abstract: A magnetic field sensor includes a substrate, a first channel comprising a first magnetic field sensing element supported by the substrate and configured to generate a first magnetic field signal indicative of a first magnetic field experienced by the first magnetic field sensing element, a second channel comprising a second magnetic field sensing element supported by the substrate and configured to generate a second magnetic field signal indicative of a second magnetic field experienced by the second magnetic field sensing element, and at least one shield configured to reduce a bandwidth of the first magnetic field by a first amount and to reduce a bandwidth of the second magnetic field by a second amount. The shield is able to act as a magnetic anti-aliasing filter for the magnetic field sensing elements, which can then be chopped or sampled.
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公开(公告)号：US20210048353A1
公开(公告)日：2021-02-18
申请号：US16538270
申请日：2019-08-12
Applicant: Allegro MicroSystems, LLC
Inventor： Juan Manuel Cesaretti , Evan Shorman
Abstract: A method is provided comprising: obtaining a temperature reading by using a temperature sensing element that is part of a magnetic field sensor; obtaining a stress reading by using a stress sensing element that is part of the magnetic field sensor; calculating a stress difference using the temperature reading and the stress reading, the stress difference including a difference between an expected stress associated with the temperature reading and the stress reading obtained from the stress sensing element; and adjusting a gain of a sensing element signal based on the stress difference, the sensing element signal being generated at least in part by a magnetic field sensing element that is part of the magnetic field sensor.
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公开(公告)号：US10718794B2
公开(公告)日：2020-07-21
申请号：US16013330
申请日：2018-06-20
Applicant: Allegro MicroSystems, LLC
Inventor： Georges El Bacha , Evan Shorman , Cory Voisine , Alexander Latham , William P. Taylor
Abstract: A current sensor integrated circuit including a magnetic field sensing element, a current conductor, an insulation structure, and a power calculation circuit is configured to meet safety isolation requirements. Isolation resistors allow for voltage from a high voltage side to be sensed at a low voltage side of the circuit. The insulation structure, current sensor package, and isolation resistors can achieve at least 500 Vrms isolation.
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