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    SWITCHING RATE MONITORING AND CONTROL
    2.
    发明申请
    SWITCHING RATE MONITORING AND CONTROL 审中-公开

    公开(公告)号：US20180219545A1

    公开(公告)日：2018-08-02

    申请号：US15651897

    申请日：2017-07-17

    申请人： TEXAS INSTRUMENTS INCORPORATED

    发明人： Rajdeep BONDADE ,  Nathan SCHEMM ,  Rajarshi MUKHOPADHYAY

    IPC分类号： H03K17/16 ,  H03K5/1532

    CPC分类号： H03K17/165 ,  H03K5/1532 ,  H03K17/0822 ,  H03K17/168 ,  H03K2217/0063 ,  H03K2217/0072

    摘要： An apparatus to monitor and control a switching rate in a switch includes a differentiator circuit including a capacitor and a configurable resistor. The differentiator circuit further includes an input terminal of the capacitors configured to receive a first voltage from a switch and a differentiator node configured to receive a differentiated voltage based on the first voltage. The apparatus includes a peak detector circuit coupled to the differentiator node and configured to detect a peak value of the differentiated voltage. The apparatus further includes a driver circuit coupled to the peak detector circuit and configured to adjust a control signal to the switch responsive to the detected peak value of the differentiated voltage.

    LOW ELECTROMAGNETIC INTERFERENCE AND SWITCH LOSS MOTOR DRIVER
    3.
    发明申请
    LOW ELECTROMAGNETIC INTERFERENCE AND SWITCH LOSS MOTOR DRIVER 审中-公开

    公开(公告)号：US20190326902A1

    公开(公告)日：2019-10-24

    申请号：US16459814

    申请日：2019-07-02

    申请人： TEXAS INSTRUMENTS INCORPORATED

    发明人： Rajarshi MUKHOPADHYAY ,  Sooping SAW ,  Anuj JAIN

    IPC分类号： H03K17/16 ,  H02M1/08 ,  H02M1/44 ,  H02P6/14

    摘要： Modulating a gate drive current supplied to an output drive switch coupled to an electric motor by performing at least the following: obtain a gate drive current modulation profile, supply, based on the gate drive current modulation profile, a first gate drive current level as the gate drive current when the output drive switch is operating within a first region, drop the first gate drive current level to a second gate drive current level when the output drive switch transitions from the first region to operating within a Miller region, increase the second gate drive current level to a third gate drive current level within the Miller region, and set the gate drive current to a fourth gate drive current level when the output drive switch transitions from the Miller region to operating within a third region.

    RING AMPLITUDE MEASUREMENT AND MITIGATION
    4.
    发明申请
    RING AMPLITUDE MEASUREMENT AND MITIGATION 审中-公开

    公开(公告)号：US20180219547A1

    公开(公告)日：2018-08-02

    申请号：US15636365

    申请日：2017-06-28

    申请人： TEXAS INSTRUMENTS INCORPORATED

    发明人： Rajdeep BONDADE ,  Nathan SCHEMM ,  Rajarshi MUKHOPADHYAY

    IPC分类号： H03K17/687 ,  H03K5/1532 ,  H03K5/08 ,  H03K3/0233 ,  H03K5/24 ,  H02M1/08

    CPC分类号： H03K17/687 ,  H02M1/08 ,  H03K3/02337 ,  H03K5/08 ,  H03K5/1532 ,  H03K5/2472 ,  H03K5/2481 ,  H03K17/0822 ,  H03K17/165

    摘要： An apparatus includes a voltage divider circuit including a plurality of series- connected capacitors and including an input terminal of one of the capacitors configured to receive a first voltage from a switch, and a ring node comprising the connection between at least two of the series-connected capacitors. The apparatus further includes a negative clamp circuit coupled to the ring node of the voltage divider circuit and a bias voltage node. The bias voltage node is configured to receive a bias voltage and responsive to a ring voltage on the ring node being less than the bias voltage, the negative clamp circuit is configured to clamp the ring voltage at a first threshold voltage. The apparatus also includes a peak detector circuit coupled to the ring node of the voltage divider circuit and configured to detect a peak amplitude of the ring voltage. The apparatus further includes a switch driver coupled to the peak detector circuit and configured to adjust a control signal to the switch responsive to the detected peak amplitude.