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    Dead time adjusted pulse width modulator
    2.
    发明授权
    Dead time adjusted pulse width modulator 有权

    公开(公告)号：US12237763B2

    公开(公告)日：2025-02-25

    申请号：US18507613

    申请日：2023-11-13

    Applicant: Texas Instruments Incorporated

    Inventor： Navaneeth Kumar Narayanasamy

    IPC: H02M1/38 ,  H02M1/00 ,  H02M1/08 ,  H02M7/5395

    Abstract: A pulse width modulator circuit with circuitry for providing a first and second pulse width modulation signal with dead time periods between the first and second pulse width modulation signals, an input for receiving a signal representative of a current in a load adapted to be driven in response to the first and second pulse width modulation signals, and circuitry coupled to the input for adjusting the dead time periods in response to the signal representative of a current.

    Power stealing using a current transformer
    5.
    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.

    HARDWARE BASED MOTOR DRIVE CONTROLLER
    7.
    发明申请
    HARDWARE BASED MOTOR DRIVE CONTROLLER 有权

    公开(公告)号：US20230072415A1

    公开(公告)日：2023-03-09

    申请号：US18054974

    申请日：2022-11-14

    Applicant: Texas Instruments Incorporated

    Inventor： Navaneeth Kumar Narayanasamy ,  Martin Staebler

    IPC: H02P7/29 ,  H02P7/03

    Abstract: A motor system with an input for coupling to a motor control signal that, when presented in a predetermined state, indicates a motor receiving power should be disabled from rotating. The system also includes controller circuitry for providing a disabling signal to motor rotation, independent of processor software control signaling and the power, in response to the control signal.

    Hardware based motor drive controller
    8.
    发明授权
    Hardware based motor drive controller 有权

    公开(公告)号：US11502629B2

    公开(公告)日：2022-11-15

    申请号：US17137598

    申请日：2020-12-30

    Applicant: Texas Instruments Incorporated

    Inventor： Navaneeth Kumar Narayanasamy ,  Martin Staebler

    IPC: H02P7/29 ,  H02P7/03

    Abstract: A motor system with an input for coupling to a motor control signal that, when presented in a predetermined state, indicates a motor receiving power should be disabled from rotating. The system also includes controller circuitry for providing a disabling signal to motor rotation, independent of processor software control signaling and the power, in response to the control signal.

    Three phase current measurement
    9.
    发明授权
    Three phase current measurement 有权

    公开(公告)号：US11255887B2

    公开(公告)日：2022-02-22

    申请号：US16669687

    申请日：2019-10-31

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Navaneeth Kumar Narayanasamy

    IPC: G01R19/14 ,  G01R19/25 ,  H02P27/06

    Abstract: A current measurement circuit includes first, second, and third conductors, a first current sensor, a second current sensor, and current computation circuitry. The first conductor is configured to conduct a first phase current of a three-phase current. The second conductor is configured to conduct a second phase current of the three-phase current. The third conductor is configured to conduct a third phase current of the three-phase current. The first current sensor is coupled to the first, the second, and the third conductors. The second current sensor is coupled to the second conductor and the third conductor. The current computation circuitry is coupled to the first current sensor and the second current sensor, and is configured to determine the first current, the second current, and the third current by applying an inverse Clarke transform to the output of the first current sensor and the output of the second current sensor.

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