公开(公告)号：US20240007103A1

公开(公告)日：2024-01-04

申请号：US18468089

申请日：2023-09-15

Applicant: ROHM CO., LTD.

Inventor： Katsuaki YAMADA ,  Shuntaro TAKAHASHI ,  Muga IMAMURA

IPC: H03K17/687

CPC classification number: H03K17/687

Abstract: A switching device includes: an N-type semiconductor substrate; a power MISFET having the N-type semiconductor substrate as its drain; an input electrode receiving an input signal; a control circuit generating a gate control signal for the power MISFET according to the input signal; and a negative current prevention circuit provided between the input electrode and the control circuit. The negative current prevention circuit includes: a P-channel MISFET connected, with its drain toward the input electrode and its source and back gate toward the control circuit, between the input electrode and the control circuit, with its gate fed with a fixed potential, with the potential at its back gate separated from the potential of the N-type semiconductor substrate; and a diode connected, with its anode toward the input electrode and its cathode toward the control circuit, between the input electrode and the control circuit.

公开(公告)号：US20140117891A1

公开(公告)日：2014-05-01

申请号：US14062430

申请日：2013-10-24

Applicant: Rohm Co., Ltd.

Inventor： Takashi FUJIMURA ,  Muga IMAMURA ,  Hirofumi YUKI

IPC: H02P6/00 ,  H02J1/06

CPC classification number: H03K17/22 ,  H02J1/06 ,  H03K2217/0081 ,  Y02P80/23 ,  Y10T307/469

Abstract: A semiconductor device has a first chip and a second chip sealed in a single package. The first chip includes a regulator which generates an internal voltage from a supply voltage, a reset circuit which monitors the supply voltage and the internal voltage to generate a reset signal, and a controlled circuit which operates by being supplied with the supply voltage. The second chip includes a controlling circuit which generates a control signal for the controlled circuit by being supplied with the internal voltage. The reset signal is fed to both the controlling circuit and the controlled circuit.

Abstract translation: 半导体器件具有密封在单个封装中的第一芯片和第二芯片。 第一芯片包括从电源电压产生内部电压的调节器，监视电源电压和内部电压以产生复位信号的复位电路，以及通过提供电源电压进行操作的受控电路。 第二芯片包括控制电路，其通过被提供内部电压来产生受控电路的控制信号。 复位信号被馈送到控制电路和受控电路。