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    Solid-state relay with isolator
    3.
    发明授权
    Solid-state relay with isolator 有权

    公开(公告)号：US11611343B2

    公开(公告)日：2023-03-21

    申请号：US17586552

    申请日：2022-01-27

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Navaneeth Kumar Narayanasamy ,  Manu Balakrishnan ,  Miroslav Oljaca

    IPC: H03K5/1536 ,  H03K17/00 ,  H03K17/687 ,  H02M1/08 ,  H03K17/0812 ,  H03K17/76 ,  H03K17/693

    Abstract: A solid-state relay circuit includes an isolator circuit, a first output terminal, a second output terminal, and an output switch. The output switch is coupled to the isolator circuit, and includes a first transistor, a second transistor, and a diode. The first transistor is coupled to the first output terminal. The second transistor is coupled to the first transistor and the second output terminal. The diode is coupled to the first transistor, the second transistor, and ground, and is configured to block current flow from ground to the first transistor and the second transistor. The isolator circuit is coupled to the output switch and is configured to activate the first transistor and the second transistor.

    DETECTION OF PLUNGER MOVEMENT IN DC SOLENOIDS THROUGH CURRENT SENSE TECHNIQUE
    4.
    发明申请
    DETECTION OF PLUNGER MOVEMENT IN DC SOLENOIDS THROUGH CURRENT SENSE TECHNIQUE 审中-公开
    通过电流检测技术检测直流电磁阀中的冲击器运动

    公开(公告)号：US20160125993A1

    公开(公告)日：2016-05-05

    申请号：US14930344

    申请日：2015-11-02

    Applicant: Texas Instruments Incorporated

    Inventor： Navaneeth Kumar Narayanasamy ,  Manu Balakrishnan

    IPC: H01F7/18 ,  G01R31/06 ,  G01D5/20

    CPC classification number: G01R31/06 ,  G01D5/2006 ,  G01R31/2829 ,  H01F7/1844 ,  H01F2007/185

    Abstract: An apparatus and method of detecting movement of a plunger of the solenoid includes detecting a peak (IPEAK) in a current signal applied to a coil of the solenoid. A predetermined threshold is added to the current signal applied to the coil of the solenoid to generate a level shifted signal. The level shifted signal and the peak signal are compared to detect movement of a plunger of the solenoid.

    Abstract translation: 检测螺线管的柱塞运动的装置和方法包括检测施加到螺线管线圈的电流信号中的峰值（IPEAK）。 对施加到螺线管的线圈的电流信号加上预定的阈值，以产生电平转换信号。 比较电平移位信号和峰值信号以检测螺线管的柱塞的运动。

    Power stealing using a current transformer
    5.
    发明授权
    Power stealing using a current transformer 有权

    公开(公告)号：US12289047B2

    公开(公告)日：2025-04-29

    申请号：US18587119

    申请日：2024-02-26

    Applicant: Texas Instruments Incorporated

    Inventor： Navaneeth Kumar Narayanasamy ,  Manu Balakrishnan

    IPC: H02M1/08 ,  H02M1/088 ,  H02M1/32 ,  H02M7/217

    Abstract: A circuit includes a first rectifier having a first rectifier input and a first rectifier output. The circuit also includes a bridge circuit and a second rectifier. The bridge circuit is coupled to the first rectifier output. The bridge circuit has first, second, third, and fourth terminals. The first and second terminals are coupled to the first rectifier output, and the third and fourth terminals are adapted to be coupled to a primary winding of a transformer. The second rectifier has a second rectifier input and a second rectifier output. The second rectifier input is adapted to be coupled to a secondary winding of the transformer.

    Power stealing using a current transformer
    6.
    发明授权
    Power stealing using a current transformer 有权

    公开(公告)号：US11962234B2

    公开(公告)日：2024-04-16

    申请号：US17406762

    申请日：2021-08-19

    Applicant: Texas Instruments Incorporated

    Inventor： Navaneeth Kumar Narayanasamy ,  Manu Balakrishnan

    IPC: H02M1/08 ,  H02M1/088 ,  H02M1/32 ,  H02M7/217

    CPC classification number: H02M1/088 ,  H02M1/32 ,  H02M7/217

    Abstract: A circuit includes a first rectifier having a first rectifier input and a first rectifier output. The circuit also includes a bridge circuit and a second rectifier. The bridge circuit is coupled to the first rectifier output. The bridge circuit has first, second, third, and fourth terminals. The first and second terminals are coupled to the first rectifier output, and the third and fourth terminals are adapted to be coupled to a primary winding of a transformer. The second rectifier has a second rectifier input and a second rectifier output. The second rectifier input is adapted to be coupled to a secondary winding of the transformer.

    Method to reduce the commutation loss in a motor inverter
    8.
    发明授权
    Method to reduce the commutation loss in a motor inverter 有权

    公开(公告)号：US11368111B2

    公开(公告)日：2022-06-21

    申请号：US16807924

    申请日：2020-03-03

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Manu Balakrishnan

    IPC: H02P6/28 ,  H02P6/16 ,  H01F13/00

    Abstract: A circuit comprises a multiphase gate driver to be coupled to a multiphase inverter for driving a multiphase motor. For each phase, the multi-phase gate driver is to, in accordance with a pulse width modulation (PWM) control signal, turn on and off a high side transistor of a given pair of high and low side transistors of the multiphase inverter, discontinue the PWM control signal turn to the high side transistor of the given pair and turn off the high side transistor of the given pair, and turn on the low side transistor of the given pair until a current level through the low side transistor falls below a threshold, at which time, turn off the low side transistor.

    Method and circuit for detecting motor winding over temperature
    9.
    发明授权
    Method and circuit for detecting motor winding over temperature 有权

    公开(公告)号：US10965240B2

    公开(公告)日：2021-03-30

    申请号：US16553732

    申请日：2019-08-28

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Manu Balakrishnan ,  Abhishek Vishwa

    IPC: G05B5/00 ,  H02P29/64 ,  G01R19/02 ,  H02P23/22

    Abstract: A hardware-based detection system includes, among other things, a signal-generating circuit for generating a signal which is functionally related to current in a motor winding, a reference current, and a duration of time. The system may also include a comparator circuit for comparing the generated signal to a reference signal, and for thereby detecting an over-temperature condition in the motor winding. If desired, a compensating circuit may be used to generate a variable reference signal as a function of ambient temperature. A method of operating a detection system is also disclosed. If desired, the detection system may be completely implemented in hardware using an uncomplicated analog circuit architecture.

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