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公开(公告)号：US11243234B2
公开(公告)日：2022-02-08
申请号：US17061602
申请日：2020-10-02
Applicant: Allegro MicroSystems, LLC
Inventor： Sam Tran , Jay M. Towne , P. Karl Scheller
IPC: G01R19/165 , G01R31/40 , G01R31/28 , G01R33/02 , G01D5/14
Abstract: A monitor circuit for monitoring a level of a first and second regulated source may monitor a voltage level of regulated voltages or a current level of regulated currents. In an embodiment, the monitor circuit includes circuitry responsive to a first regulated current and to a second regulated current. A first circuit responsive to the first regulated current and to the second regulated current generates a first error signal indicative of at least one of an overcurrent condition of the first regulated current and an undercurrent condition of the second regulated current. A second circuit responsive to the first regulated current and to the second regulated current generates a second error signal indicative of at least one of an undercurrent condition of the first regulated current and an overcurrent condition of the second regulated current. A method for monitoring the levels of first and second regulated sources is also provided.
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公开(公告)号：US20180017615A1
公开(公告)日：2018-01-18
申请号：US15211022
申请日：2016-07-15
Applicant: Allegro MicroSystems, LLC
Inventor： Kristann L. Moody , Alejandro G. Milesi , Sam Tran
IPC: G01R31/28
CPC classification number: G01R31/2874 , G01R31/2856
Abstract: In one aspect, an integrated circuit (IC) includes an output port enabling measurement of a performance characteristic of the IC at a first temperature. The performance characteristic of the IC is a minimum value at the first temperature with respect to any other temperature. The first temperature may be room temperature.
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公开(公告)号：US10978897B2
公开(公告)日：2021-04-13
申请号：US15942968
申请日：2018-04-02
Applicant: Allegro MicroSystems, LLC
Inventor： Sam Tran
IPC: H02J7/00
Abstract: Systems and methods described herein provide a sensor integrated circuit (IC) having a high voltage bi-directional current source and disconnect switch that are configured to suppress undesirable voltage artifacts. The sensor IC can include a power pin for coupling to an external power supply, a reference pin, and a functional circuit. The bi-directional current source can be disposed in a current path between the power pin and an energy storage device and be configured to control a current flow to the energy storage device and a current flow from the energy storage device.
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公开(公告)号：US20190305565A1
公开(公告)日：2019-10-03
申请号：US15942968
申请日：2018-04-02
Applicant: Allegro MicroSystems, LLC
Inventor： Sam Tran
IPC: H02J7/00
Abstract: Systems and methods described herein provide a sensor integrated circuit (IC) having a high voltage bi-directional current source and disconnect switch that are configured to suppress undesirable voltage artifacts. The sensor IC can include a power pin for coupling to an external power supply, a reference pin, and a functional circuit. The bi-directional current source can be disposed in a current path between the power pin and an energy storage device and be configured to control a current flow to the energy storage device and a current flow from the energy storage device.
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公开(公告)号：US10209279B2
公开(公告)日：2019-02-19
申请号：US14748692
申请日：2015-06-24
Applicant: ALLEGRO MICROSYSTEMS, LLC
Inventor： Sam Tran , Jay M. Towne , P. Karl Scheller
IPC: G01R19/165 , G01R31/40 , G01R31/28 , G01R33/02 , G01D5/14
Abstract: A monitor circuit for monitoring a level of a first and second regulated source may monitor a voltage level of regulated voltages or a current level of regulated currents. In an embodiment, the monitor circuit includes circuitry responsive to a first regulated voltage and to a second regulated voltage. A first circuit responsive to the first regulated voltage and to the second regulated voltage generates a first error signal indicative of at least one of an overvoltage condition of the first regulated voltage and an undervoltage condition of the second regulated voltage. A second circuit responsive to the first regulated voltage and to the second regulated voltage generates a second error signal indicative of at least one of an undervoltage condition of the first regulated voltage and an overvoltage condition of the second regulated voltage. A method for monitoring the levels of first and second regulated sources is also provided.
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Patent Agency Ranking
公开(公告)号：US11095111B2
公开(公告)日：2021-08-17
申请号：US15942960
申请日：2018-04-02
Applicant: Allegro MicroSystems, LLC
Inventor： Sam Tran
Abstract: Systems and methods described herein a sensor integrated circuit (IC) is provided having a protection circuit configured to protect circuitry within the IC from a transient pulse on a connection (i.e., power pin) to a power supply that is configured to provide power to the IC. The protection circuit can be disposed in a current path between a power pin of the IC and additional circuitry or nodes within the IC, such as but not limited to, a regulator or a bi-directional current source. The protection circuit includes a reverse blocking device having a first terminal coupled to the power supply at which a predetermined power supply voltage is provided and a second terminal coupled to an input of the regulator.
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公开(公告)号：US20210048456A1
公开(公告)日：2021-02-18
申请号：US17061602
申请日：2020-10-02
Applicant: Allegro MicroSystems, LLC
Inventor： Sam Tran , Jay M. Towne , P. Karl Scheller
IPC: G01R19/165 , G01R31/40 , G01R31/28 , G01R33/02
Abstract: A monitor circuit for monitoring a level of a first and second regulated source may monitor a voltage level of regulated voltages or a current level of regulated currents. In an embodiment, the monitor circuit includes circuitry responsive to a first regulated current and to a second regulated current. A first circuit responsive to the first regulated current and to the second regulated current generates a first error signal indicative of at least one of an overcurrent condition of the first regulated current and an undercurrent condition of the second regulated current. A second circuit responsive to the first regulated current and to the second regulated current generates a second error signal indicative of at least one of an undercurrent condition of the first regulated current and an overcurrent condition of the second regulated current. A method for monitoring the levels of first and second regulated sources is also provided.
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公开(公告)号：US20190305547A1
公开(公告)日：2019-10-03
申请号：US15942960
申请日：2018-04-02
Applicant: Allegro MicroSystems, LLC
Inventor： Sam Tran
Abstract: Systems and methods described herein a sensor integrated circuit (IC) is provided having a protection circuit configured to protect circuitry within the IC from a transient pulse on a connection (i.e., power pin) to a power supply that is configured to provide power to the IC. The protection circuit can be disposed in a current path between a power pin of the IC and additional circuitry or nodes within the IC, such as but not limited to, a regulator or a bi-directional current source. The protection circuit includes a reverse blocking device having a first terminal coupled to the power supply at which a predetermined power supply voltage is provided and a second terminal coupled to an input of the regulator.
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公开(公告)号：US20190128930A1
公开(公告)日：2019-05-02
申请号：US16232560
申请日：2018-12-26
Applicant: Allegro MicroSystems, LLC
Inventor： Sam Tran , Jay M. Towne , P. Karl Scheller
IPC: G01R19/165 , G01R33/02 , G01R31/40 , G01R31/28
Abstract: A monitor circuit for monitoring a level of a first and second regulated source may monitor a voltage level of regulated voltages or a current level of regulated currents. In an embodiment, the monitor circuit includes circuitry responsive to a first regulated voltage and to a second regulated voltage. A first circuit responsive to the first regulated voltage and to the second regulated voltage generates a first error signal indicative of at least one of an overvoltage condition of the first regulated voltage and an undervoltage condition of the second regulated voltage. A second circuit responsive to the first regulated voltage and to the second regulated voltage generates a second error signal indicative of at least one of an undervoltage condition of the first regulated voltage and an overvoltage condition of the second regulated voltage. A method for monitoring the levels of first and second regulated sources is also provided.
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公开(公告)号：US10948555B2
公开(公告)日：2021-03-16
申请号：US16420470
申请日：2019-05-23
Applicant: Allegro MicroSystems, LLC
Inventor： Sam Tran , Rémy Lassalle-Balier
Abstract: A magnetoresistance element structure disposed parallel to an x-y plane defined by an x-axis and a y-axis orthogonal to the x-axis can include a first magnetoresistance element having a plurality of first shapes coupled in series to result in the first magnetoresistance element having a first serpentine shape parallel to the x-y plane; and a second magnetoresistance element having a plurality of second shapes coupled in series to result in the second magnetoresistance element having a second serpentine shape parallel to the x-y plane, wherein the plurality of first shapes and the plurality of second shapes are disposed in an interdigitated pattern. A magnetic field sensor can use the above magnetoresistance element structure. Nested magnetoresistance elements and magnetic field sensors are also described.
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