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26 条记录 (耗时 0.018 秒)

    GATE CONTROL CIRCUIT, SEMICONDUCTOR DEVICE, ELECTRONIC APPARATUS, AND VEHICLE
    1.
    发明申请
    GATE CONTROL CIRCUIT, SEMICONDUCTOR DEVICE, ELECTRONIC APPARATUS, AND VEHICLE 有权

    公开(公告)号：US20230133872A1

    公开(公告)日：2023-05-04

    申请号：US18049731

    申请日：2022-10-26

    申请人： ROHM Co., LTD.

    发明人： Toru TAKUMA ,  Adrian Joita ,  Shuntaro Takahashi

    IPC分类号： H01L27/02 ,  H01L29/78 ,  H02M3/156

    摘要： Disclosed is a gate control circuit that generates a gate control signal of an output transistor connected between an application end of a power supply voltage and an application end of an output voltage. The gate control circuit includes a first current source connected between the application end of the power supply voltage and the application end of the output voltage, a second current source connected between an application end of a booster voltage and an application end of a reference voltage, the booster voltage being raised to a voltage value higher than the power supply voltage in a steady state, an output stage that uses at least one of the first and second current sources to generate a gate charge current for charging a gate of the output transistor, and a controller that uses at least one of the first and second current sources according to the output voltage.

    Switching device
    2.
    发明授权
    Switching device 有权

    公开(公告)号：US11128288B2

    公开(公告)日：2021-09-21

    申请号：US16726461

    申请日：2019-12-24

    申请人： Rohm Co., Ltd.

    发明人： Toru Takuma ,  Shuntaro Takahashi

    IPC分类号： H03K17/0812 ,  B60R16/02 ,  H03K17/14 ,  H02H9/04 ,  H02H3/087 ,  H02H1/00 ,  H03K17/687

    摘要： A switching device has, for example, a first terminal configured to be connected to an application node for a first voltage, a second terminal configured to be connected to the first end of a load, a third terminal configured to be connected to the second end of the load and to an application node for a second voltage, a switching element configured to be connected between the first and second terminals, a first active clamper configured to limit the output voltage at the second terminal with reference to the first voltage in a first state, and a second active clamper configured to limit the output voltage with reference to the second voltage in a second state different from the first state.

    SWITCHING DRIVING CIRCUIT, SWITCHING CIRCUIT, AND POWER SUPPLY DEVICE
    3.
    发明申请
    SWITCHING DRIVING CIRCUIT, SWITCHING CIRCUIT, AND POWER SUPPLY DEVICE 审中-公开

    公开(公告)号：US20180302083A1

    公开(公告)日：2018-10-18

    申请号：US15768658

    申请日：2016-09-26

    申请人： Rohm Co., Ltd.

    发明人： Shuntaro Takahashi

    IPC分类号： H03K17/687 ,  H02M1/08

    摘要： This switch drive circuit drives a switch element. The switch drive circuit is provided with a signal input terminal, a disconnect circuit and a connect circuit. A control signal is input into the signal input terminal. The disconnect circuit includes a first switch which switches connection/disconnection of a line connecting the signal input terminal to a control terminal of the switch element, and when the switch element is to be turned off, the disconnect circuit performs a disconnection operation to disconnect the line using the first switch. The connect circuit includes a second switch which switches connection/disconnection between a certain point on the line, positioned on the control terminal side of the first switch, and a reference potential point, and when the switch element is to be turned off, the connect circuit performs a connection operation to connect the certain point to the reference potential point using the second switch.

    CLAMPER, INPUT CIRCUIT, AND SEMICONDUCTOR DEVICE
    4.
    发明公开
    CLAMPER, INPUT CIRCUIT, AND SEMICONDUCTOR DEVICE 审中-公开

    公开(公告)号：US20230223746A1

    公开(公告)日：2023-07-13

    申请号：US18151538

    申请日：2023-01-09

    申请人： ROHM Co., LTD.

    发明人： Adrian Joita ,  Toru TAKUMA ,  Shuntaro Takahashi

    IPC分类号： H02H3/08 ,  H02H7/20

    CPC分类号： H02H3/08 ,  H02H7/205

    摘要： Disclosed herein is a clamper including a current source that is connected between an external electrode and an internal node and generates a predetermined constant current, a diode having an anode connected to the internal node, and a current mirror that generates a second current corresponding to a first current flowing via the diode and draws the second current from the internal node to a reference voltage node.

    Overcurrent protection circuit
    5.
    发明授权
    Overcurrent protection circuit 有权

    公开(公告)号：US11637420B2

    公开(公告)日：2023-04-25

    申请号：US17503907

    申请日：2021-10-18

    申请人： Rohm Co., Ltd.

    发明人： Toru Takuma ,  Naoki Takahashi ,  Shuntaro Takahashi

    IPC分类号： H02M1/00 ,  H02H1/00 ,  H02H3/093 ,  B60R16/02 ,  H02H3/087 ,  H02H7/20 ,  B60R16/03

    摘要： In order both to accommodate instantaneous current as well as overcurrent protection in accordance with the load, an overcurrent protection circuit has: a threshold value generation unit that, in accordance with a threshold value control signal, switches between setting an overcurrent detection threshold value to a first set value (∝ Iref) and a second set value (∝ Iset) lower than the first set value; an overcurrent detection unit that compares a sense signal in accordance with the current being monitored and the overcurrent detection value and generates an overcurrent protection signal; a reference value generation unit that generates a reference value (∝ Iset) in accordance with the seconds set value; a comparison unit that compares the sense signal and the reference value, and generates a comparison signal; and a threshold value control unit that monitors the comparison signal, and generates a threshold value control signal.

    OVERCURRENT PROTECTION CIRCUIT
    6.
    发明申请
    OVERCURRENT PROTECTION CIRCUIT 有权

    公开(公告)号：US20220158436A1

    公开(公告)日：2022-05-19

    申请号：US17592807

    申请日：2022-02-04

    申请人： Rohm Co., Ltd.

    发明人： Toru Takuma ,  Shuntaro Takahashi ,  Naoki Takahashi

    IPC分类号： H02H3/08 ,  H02H9/02 ,  B60R16/02 ,  G05F1/573 ,  G06F1/30 ,  H03K19/003

    摘要： An overcurrent protection circuit includes a current control part configured to control conductance of a transistor so as to limit an output current flowing when the transistor is turned on to a predetermined upper limit or less, and a duty control part configured to forcibly turning on/off the transistor at a predetermined duty ratio when a temperature protection circuit detects a temperature abnormality in a state where the current control part limits the output current.

    Switch device, electronic equipment, and vehicle
    8.
    发明授权
    Switch device, electronic equipment, and vehicle 有权

    公开(公告)号：US12119813B2

    公开(公告)日：2024-10-15

    申请号：US18047441

    申请日：2022-10-18

    申请人： ROHM Co., LTD.

    发明人： Tetsuo Yamato ,  Shuntaro Takahashi ,  Kazuki Okuyama

    IPC分类号： H03K17/687 ,  H01H47/00 ,  H01H47/04 ,  H01H47/32

    CPC分类号： H03K17/687 ,  H03K2217/0063 ,  H03K2217/0072

    摘要： Disclosed is a switch device including a first terminal, a second terminal, a third terminal, a switch element disposed between the first terminal and the second terminal, a control line that reaches a control end of the switch element from the third terminal, a first circuit block that is disposed on the control line and is configured to drive the switch element according to a control signal supplied to the third terminal, at least one second circuit block, each second circuit block being connected to a corresponding one of branch power supply lines that branch from the control line, a first resistor disposed between the third terminal and the first circuit block, and at least one second resistor, each second resistor being disposed on a corresponding one of the branch power supply lines.