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21.发明申请公开(公告)号：US20170176566A1
公开(公告)日：2017-06-22
申请号：US14970949
申请日：2015-12-16
Applicant: Allegro Microsystems, LLC
Inventor： Gerardo A. Monreal , Bruno Luis Uberti , Alejandro G. Milesi , Joseph D. Hollins
IPC: G01R35/00
Abstract: Systems and methods are provided herein for performing a self-test of a magnetic field sensor using internal diagnostic components for fault detection. The magnetic field sensor includes a magnetic sensing element coupled to a sensor biasing current source and a switching network coupled to the magnetic sensing element. The switching network includes one or more diagnostics switches and one or more signal switches, and the one or more diagnostic switches are coupled to a diagnostic input current source. The switching network is configured to generate a time-multiplexed signal having a magnetic signal responsive to an external magnetic field in a magnetic signal time period and a diagnostic signal in a diagnostic signal time period. The diagnostic signal may be operable to produce an intermediate signal to have a predetermined sequence between a first state and a second state.
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公开(公告)号：US09664752B2
公开(公告)日：2017-05-30
申请号：US14277218
申请日：2014-05-14
Applicant: Allegro Microsystems, LLC
Inventor： Gerardo A. Monreal , Bruno Luis Uberti
CPC classification number: G01R33/07 , G01R33/0023 , G01R33/0206
Abstract: A magnetic field sensor includes first, second, and third magnetic field sensing elements having respective first, second and third maximum response axes, the first second and third maximum response axes pointing along respective first, second, and third different coordinate axes. In response to a magnetic field, the first, second, and third magnetic field sensing elements are operable to generate first second, and third magnetic field signals. Signals representative of the first, second, and third magnetic field signals are compared with thresholds to determine if the magnetic field is greater than the thresholds. A corresponding method is also provided.
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公开(公告)号：US20210057330A1
公开(公告)日：2021-02-25
申请号：US16547823
申请日：2019-08-22
Applicant: Allegro MicroSystems, LLC
Inventor： Robert A. Briano , Bruno Luis Uberti , Alejandro Gabriel Milesi , Gerardo A. Monreal
IPC: H01L23/522 , H01L23/66
Abstract: Methods and apparatus for a signal isolator IC package including a die having a first die portion isolated from a second die portion. The first die portion is surrounded on six sides by first insulative material and the second die portion is surrounded on six sides by second insulative material. The first die portion provides a first voltage domain and the second die portion provides a second voltage domain. The signal isolator comprises a first signal path between the first die portion and the second die portion, wherein the first signal path is isolated with respect to the first and second die portions.
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公开(公告)号：US20200225298A1
公开(公告)日：2020-07-16
申请号：US16827951
申请日：2020-03-24
Applicant: Allegro MicroSystems, LLC , COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES
Inventor： Alexander Latham , Claude Fermon , Gerardo A. Monreal , Alejandro Gabriel Milesi
IPC: G01R33/00 , G01R33/025 , H01F5/04 , G01D5/20 , G01D5/14
Abstract: Apparatus includes a first portion of conductive material having varying response to a generated magnetic field along a length of the conductive material, wherein the first portion of conductive material produces a varying eddy current and a varying reflected magnetic field, in response to the generated magnetic field. The apparatus further includes one or more reference portions of conductive material having a relatively invariable response to the generated magnetic field, wherein the reference portion of conductive material produces a relatively invariable eddy current and a relatively invariable reflected magnetic field in response to the generated magnetic field.
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公开(公告)号：US10527703B2
公开(公告)日：2020-01-07
申请号：US14970949
申请日：2015-12-16
Applicant: Allegro MicroSystems, LLC
Inventor： Gerardo A. Monreal , Bruno Luis Uberti , Alejandro G. Milesi , Joseph D. Hollins
Abstract: Systems and methods are provided herein for performing a self-test of a magnetic field sensor using internal diagnostic components for fault detection. The magnetic field sensor includes a magnetic sensing element coupled to a sensor biasing current source and a switching network coupled to the magnetic sensing element. The switching network includes one or more diagnostics switches and one or more signal switches, and the one or more diagnostic switches are coupled to a diagnostic input current source. The switching network is configured to generate a time-multiplexed signal having a magnetic signal responsive to an external magnetic field in a magnetic signal time period and a diagnostic signal in a diagnostic signal time period. The diagnostic signal may be operable to produce an intermediate signal to have a predetermined sequence between a first state and a second state.
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Patent Agency Ranking
公开(公告)号：US10520559B2
公开(公告)日：2019-12-31
申请号：US15676148
申请日：2017-08-14
Applicant: Allegro MicroSystems, LLC
Inventor： Juan Manuel Cesaretti , Andreas P. Friedrich , Gerardo A. Monreal , Alejandro Gabriel Milesi
Abstract: Hall effect elements are driven by current generators that use vertical epi resistors disposed away from an edge of a substrate upon which, within which, or over which, the Hall effect elements, the current generators, and the vertical epi resistors are disposed.
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公开(公告)号：US20180340988A1
公开(公告)日：2018-11-29
申请号：US15606352
申请日：2017-05-26
Applicant: Allegro MicroSystems, LLC , COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES
Inventor： Alexander Latham , Claude Fermon , Gerardo A. Monreal , Alejandro Gabriel Milesi
IPC: G01R33/00 , G01R33/025 , H01F5/04
Abstract: An apparatus comprises a conductive material having varying thickness along its length, the varying thickness providing varying response along a length of the conductive material to a magnetic field having a non-zero frequency; wherein the magnetic field produces an eddy current in the conductive material which generates a reflected magnetic field, wherein the varying response causes the reflected magnetic field to vary in strength along the length of the conductive material. The apparatus may include one or more reference portions of conductive material.
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公开(公告)号：US09999107B1
公开(公告)日：2018-06-12
申请号：US15378702
申请日：2016-12-14
Applicant: Allegro MicroSystems, LLC
Inventor： Manuel Rivas , Gerardo A. Monreal
CPC classification number: H05B33/0854 , G01D5/145 , G01D7/00 , G01P13/04 , G01R33/077 , G01R33/093 , G01R33/098 , H05B33/0845 , H05B37/0227
Abstract: In one aspect, an integrated circuit (IC) includes a first magnetic field sensor configured to sense a ring magnet, a second magnetic field sensor configured to sense the ring magnet and processing circuitry configured to receive a first signal from the first magnetic field sensor and to receive a second signal from the second magnetic field sensor. The processing circuitry is further configured to control an on/off state of at least one light emitting diode (LED) and brightness of the LED based on movement and position of the ring magnet with respect to the first and second magnetic field sensors.
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公开(公告)号：US09897464B2
公开(公告)日：2018-02-20
申请号：US15638876
申请日：2017-06-30
Applicant: Allegro MicroSystems, LLC
CPC classification number: G01D5/142 , G01B7/14 , G01D5/16 , G01R33/0023 , G01R33/0206 , G01R33/07
Abstract: In one aspect, a magnetic field sensor includes first and second magnetic field sensing elements having respective first and second maximum response axes. The first and second maximum response axes point along respective first and second different coordinate axes. In response to a magnetic field, the first and second magnetic field sensing elements are operable to generate first and second magnetic field signals. The magnetic field sensor includes an electronic circuit coupled to receive the first and the second magnetic field signals. The electronic circuit is configured to determine a magnitude of a vector sum of the first and the second magnetic field signals and provide one or more signals in response to the magnitude of the vector sum determined.
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公开(公告)号：US20170307407A1
公开(公告)日：2017-10-26
申请号：US15638876
申请日：2017-06-30
Applicant: Allegro MicroSystems, LLC
CPC classification number: G01D5/142 , G01B7/14 , G01D5/16 , G01R33/0023 , G01R33/0206 , G01R33/07
Abstract: In one aspect, a magnetic field sensor includes first and second magnetic field sensing elements having respective first and second maximum response axes. The first and second maximum response axes point along respective first and second different coordinate axes. In response to a magnetic field, the first and second magnetic field sensing elements are operable to generate first and second magnetic field signals. The magnetic field sensor includes an electronic circuit coupled to receive the first and the second magnetic field signals. The electronic circuit is configured to determine a magnitude of a vector sum of the first and the second magnetic field signals and provide one or more signals in response to the magnitude of the vector sum determined.
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