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    Compact offset drift trim implementation
    1.
    发明授权
    Compact offset drift trim implementation 有权

    公开(公告)号：US11258414B2

    公开(公告)日：2022-02-22

    申请号：US16803514

    申请日：2020-02-27

    Applicant: Texas Instruments Incorporated

    Inventor： Viola Schaffer

    IPC: H03F3/45 ,  H03F1/30

    Abstract: Disclosed embodiments include a method for reducing amplifier offset drift comprised of receiving a first differential input signal at a first transistor base terminal and a second differential input signal at a second transistor base terminal, coupling the collector of the first transistor to the emitter of a third transistor and the emitter of the second transistor to the emitter of a fourth transistor, then coupling the base of the third transistor to the base of the fourth transistor. The method is also comprised of coupling the collector of the fourth transistor to an output terminal, generating a temperature dependent error correction current to minimize the difference in the amount of current flowing through the third transistor and the amount of current flowing through the fourth transistor, then injecting the error correction current into the emitter terminal of at least one of either the third transistor or the fourth transistor.

    COMPACT OFFSET DRIFT TRIM IMPLEMENTATION
    2.
    发明申请
    COMPACT OFFSET DRIFT TRIM IMPLEMENTATION 有权

    公开(公告)号：US20210273620A1

    公开(公告)日：2021-09-02

    申请号：US16803514

    申请日：2020-02-27

    Applicant: Texas Instruments Incorporated

    Inventor： Viola Schaffer

    IPC: H03F3/45 ,  H03F1/30

    Abstract: Disclosed embodiments include a method for reducing amplifier offset drift comprised of receiving a first differential input signal at a first transistor base terminal and a second differential input signal at a second transistor base terminal, coupling the collector of the first transistor to the emitter of a third transistor and the emitter of the second transistor to the emitter of a fourth transistor, then coupling the base of the third transistor to the base of the fourth transistor. The method is also comprised of coupling the collector of the fourth transistor to an output terminal, generating a temperature dependent error correction current to minimize the difference in the amount of current flowing through the third transistor and the amount of current flowing through the fourth transistor, then injecting the error correction current into the emitter terminal of at least one of either the third transistor or the fourth transistor.

    Integrated fluxgate magnetic gradient sensor
    3.
    发明授权
    Integrated fluxgate magnetic gradient sensor 有权

    公开(公告)号：US10983180B2

    公开(公告)日：2021-04-20

    申请号：US16569741

    申请日：2019-09-13

    Applicant: Texas Instruments Incorporated

    Inventor： Martijn Fridus Snoeij ,  Viola Schaffer ,  Gebhard Haug

    IPC: G01R33/022 ,  G01R33/04

    Abstract: An integrated fluxgate magnetic gradient sensor includes a common mode sensitive fluxgate magnetometer and a differential mode sensitive fluxgate magnetometer. The common mode sensitive fluxgate magnetometer includes a first core adjacent to a second core. The first and second cores are wrapped by a first excitation wire coil configured to receive an excitation current that affects a differential mode magnetic field. The differential mode sensitive fluxgate magnetometer includes a third core adjacent to the first core and a fourth core adjacent to the second core. The third and fourth cores are wrapped by a second excitation wire coil configured to receive an excitation current that affects a common mode magnetic field.

    APPARATUS AND METHOD FOR IN SITU CURRENT MEASUREMENT IN A CONDUCTOR
    4.
    发明申请
    APPARATUS AND METHOD FOR IN SITU CURRENT MEASUREMENT IN A CONDUCTOR 有权
    用于在导体中进行电流测量的装置和方法

    公开(公告)号：US20140218018A1

    公开(公告)日：2014-08-07

    申请号：US13838576

    申请日：2013-03-15

    Applicant: TEXAS INSTRUMENTS INCORPORATED ,  TEXAS INSTRUMENTS DEUTSCHLAND GMBH

    Inventor： Mikhail Valeryevich Ivanov ,  Siva RaghuRam Prasad Chennupati ,  Viola Schaffer

    IPC: G01R33/02 ,  G01R33/00 ,  G01R33/09

    CPC classification number: G01R15/20 ,  G01R15/148 ,  G01R15/207 ,  G01R33/0005 ,  G01R33/02 ,  G01R33/09

    Abstract: Improved current sensing methods and apparatus and conductor apparatus are presented for sensing current in a bus bar or other conductor using one or more circular magnetic sensors or multiple magnetic sensors disposed on a substrate in a pattern surrounding a longitudinal path within the outer periphery of the conductor to avoid or mitigate sensed magnetic field crosstalk and to facilitate use of high sensitivity magnetic sensors at locations inside the conductor periphery in which the magnetic field is relatively small.

    Abstract translation: 提出了改进的电流感测方法和装置和导体装置，用于使用一个或多个圆形磁性传感器或多个磁性传感器来感测母线或其它导体中的电流，所述圆形磁性传感器或多个磁性传感器以围绕导体的外周边内的纵向路径的图案设置在基板上 以避免或减轻感测的磁场串扰并且便于在磁场相对较小的导体周边内的位置处使用高灵敏度的磁传感器。

    Overvoltage protection circuit
    6.
    发明授权
    Overvoltage protection circuit 有权

    公开(公告)号：US11177650B2

    公开(公告)日：2021-11-16

    申请号：US16536825

    申请日：2019-08-09

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Karthikeyan Krishnamourthy ,  Viola Schaffer ,  Karim Thomas Taghizadeh Kaschani

    IPC: H02H9/04 ,  H03F1/52 ,  H02H9/00 ,  H02H3/14 ,  H03F3/16 ,  H02H3/22 ,  H02H3/20

    Abstract: An overvoltage protection circuit includes an input terminal, an output terminal, a clamp transistor, and a selector circuit. The clamp transistor is configured to control current flow between the input terminal and the output terminal. The clamp transistor includes a first terminal coupled to the input terminal, a second terminal coupled to the output terminal. The selector circuit is configured to control a resistance of the clamp transistor based on a voltage at the input terminal. The selector circuit includes a first terminal coupled to the first terminal of the clamp transistor, a second terminal coupled to the second terminal of the clamp transistor, and a third terminal coupled to a third terminal of the clamp transistor.

    SIMULATION MODELS FOR INTEGRATED FLUXGATE MAGNETIC SENSORS AND OTHER MAGNETIC CIRCUIT COMPONENTS
    7.
    发明申请
    SIMULATION MODELS FOR INTEGRATED FLUXGATE MAGNETIC SENSORS AND OTHER MAGNETIC CIRCUIT COMPONENTS 审中-公开
    集成式磁力传感器和其他磁性电路组件的仿真模型

    公开(公告)号：US20160282421A1

    公开(公告)日：2016-09-29

    申请号：US14667756

    申请日：2015-03-25

    Applicant: Texas Instruments Incorporated ,  Texas Instruments Deutschland GmbH

    Inventor： Vijay Krishnamurthy ,  Tikno Harjono ,  Viola Schaffer

    IPC: G01R33/00 ,  G06F17/50

    CPC classification number: G01R33/0023 ,  G01R33/0064 ,  G06F17/5036

    Abstract: Improved magnetic component models, circuit simulation systems and methods are presented for simulating operation of a modeled magnetic circuit component in which user input defines magnetically susceptible core geometry of the modeled magnetic circuit component, a core model simulates operation of the magnetically susceptible core at least partially according to the geometry of the magnetically susceptible core, and one or more coil models simulate operation of coils wound around the magnetically susceptible core to provide a scalable model with geometry adjustable permeability for fluxgate magnetic sensors, transformers, inductors or other modeled components.

    Abstract translation: 提出了改进的磁性部件模型，电路仿真系统和方法，用于模拟建模的磁路部件的操作，其中用户输入定义了所建模的磁路部件的磁敏感核心几何形状，核心模型至少部分地模拟了磁敏感核心的操作 根据磁敏感核心的几何形状，并且一个或多个线圈模型模拟缠绕在磁敏感核心周围的线圈的操作，以提供具有用于磁通门磁传感器，变压器，电感器或其它建模部件的几何可调磁导率的可伸缩模型。

    Integrated Fluxgate Magnetic Gradient Sensor
    9.
    发明申请
    Integrated Fluxgate Magnetic Gradient Sensor 审中-公开

    公开(公告)号：US20200003848A1

    公开(公告)日：2020-01-02

    申请号：US16569741

    申请日：2019-09-13

    Applicant: Texas Instruments Incorporated

    Inventor： Martijn Fridus Snoeij ,  Viola Schaffer ,  Gebhard Haug

    IPC: G01R33/022 ,  G01R33/04

    Abstract: An integrated fluxgate magnetic gradient sensor includes a common mode sensitive fluxgate magnetometer and a differential mode sensitive fluxgate magnetometer. The common mode sensitive fluxgate magnetometer includes a first core adjacent to a second core. The first and second cores are wrapped by a first excitation wire coil configured to receive an excitation current that affects a differential mode magnetic field. The differential mode sensitive fluxgate magnetometer includes a third core adjacent to the first core and a fourth core adjacent to the second core. The third and fourth cores are wrapped by a second excitation wire coil configured to receive an excitation current that affects a common mode magnetic field.

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