Power down signal generator
    1.
    发明授权

    公开(公告)号:US11923840B1

    公开(公告)日:2024-03-05

    申请号:US18180167

    申请日:2023-03-08

    申请人: NXP B.V.

    摘要: A power down signal generator generates a power down signal. The power down signal generator includes a detection transistor, a resistor coupled in series with the detection transistor, and a compensation transistor coupled in parallel to the resistor. The detection transistor receives a first supply voltage in a first voltage domain and a current. A control voltage is generated across the resistor based on a first part of the current. The compensation transistor receives a bias voltage derived from a second supply voltage in a second voltage domain and sinks, based on the bias voltage, a second part of the current to maintain the control voltage within a predefined range. The generation of the power down signal is controlled based on the first supply voltage and the control voltage.

    Level shifter
    3.
    发明授权

    公开(公告)号:US11843374B2

    公开(公告)日:2023-12-12

    申请号:US17830056

    申请日:2022-06-01

    申请人: SK hynix Inc.

    发明人: Seung Ho Lee

    摘要: A level shifter may include: a discharge circuit configured to receive an input signal on the basis of a first power supply voltage, and discharge an internal node on the basis of the input signal; a charge supply circuit configured to supply charge to an output node from which an output signal is outputted, on the basis of a second power supply voltage; and a voltage adjustment circuit including a first MOS transistor coupled between the internal node and the output node, and configured to adjust the voltage of the output node on the basis of a bias voltage applied to the first MOS transistor, and stop the operation of adjusting the voltage of the output node on the basis of the bias voltage, when the levels of the first and second power supply voltages are equal to each other.

    VOLTAGE CONVERSION CIRCUIT AND ELECTRONIC DEVICE

    公开(公告)号:US20180309450A1

    公开(公告)日:2018-10-25

    申请号:US15769465

    申请日:2016-07-27

    申请人: SONY CORPORATION

    发明人: YUKI YAGISHITA

    摘要: An operation speed of a voltage conversion circuit is improved without increasing an output level of the voltage conversion circuit. The voltage conversion circuit is provided with a high-voltage side transistor and a gate control unit. In this voltage conversion circuit, the high-voltage side transistor outputs a predetermined high voltage higher than a predetermined reference voltage. Also, in the voltage conversion circuit, the gate control unit generates a predetermined control voltage higher than a predetermined high voltage from an input signal and applies the same between a gate and a source of the high-voltage side transistor, thereby allowing the high-voltage side transistor to output a predetermined high voltage.

    CMOS OUTPUT CIRCUIT
    8.
    发明申请
    CMOS OUTPUT CIRCUIT 审中-公开

    公开(公告)号:US20170338821A1

    公开(公告)日:2017-11-23

    申请号:US15599815

    申请日:2017-05-19

    申请人: Rohm Co., Ltd.

    发明人: Satoshi Tanaka

    摘要: A CMOS output circuit includes a first P-MOSFET having a source connected to a power supply terminal, a drain connected to an output terminal, and a back gate connected to a first potential terminal; a first N-MOSEFET having a drain connected to the output terminal, a source connected to the ground terminal, and a back gate connected to a second potential terminal; a first potential switching portion arranged to switch whether to connect the first potential terminal to the power supply terminal or to the output terminal; a second potential switching portion arranged to switch whether to connect the second potential terminal to the ground terminal or to the output terminal; a first gate switching portion arranged to switch whether or not to short-circuit the gate of the first P-MOSFET to the first potential terminal; a second gate switching portion arranged to switch whether or not to short-circuit the gate of the first N-MOSFET to the second potential terminal; a first driver arranged to drive the gate of the first P-MOSFET in accordance with a first input signal; a second driver arranged to drive the gate of the first N-MOSFET in accordance with a second input signal; and a control portion arranged to control individual portions of the circuit when turning off both the first P-MOSFET and the first N-MOSFET, so as to connect the first potential terminal to one of the power supply terminal and the output terminal, which has a higher potential, to connect the second potential terminal to one of the ground terminal and the output terminal, which has a lower potential, to short-circuit the gate of the first P-MOSFET to the first potential terminal, and to short-circuit the gate of the first N-MOSFET to the second potential terminal.