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    Semiconductor Device
    2.
    发明申请
    Semiconductor Device 审中-公开

    公开(公告)号：US20190260371A1

    公开(公告)日：2019-08-22

    申请号：US16314783

    申请日：2017-07-07

    申请人： Hitachi Automotive Systems, Ltd.

    发明人： Shinichirou WADA ,  Masahito SONEHARA

    IPC分类号： H03K17/082 ,  H01L27/02

    摘要： A semiconductor device capable of enhancing uniformity of temperatures of transistors in an active clamp state while maintaining current performance is provided. A power transistor is connected to a power transistor in parallel. An active clamp circuit is provided in a path from a connection point between the power transistors to a gate of the power transistor and is conducted in a case where a voltage of the connection point exceeds a first threshold. An active clamp cutoff circuit is provided in a path from the active clamp circuit to a gate of the power transistor and cuts off or suppresses a current flowing into the path.

    Electronic Control Unit
    4.
    发明申请
    Electronic Control Unit 审中-公开

    公开(公告)号：US20190260198A1

    公开(公告)日：2019-08-22

    申请号：US16315023

    申请日：2017-06-12

    申请人： Hitachi Automotive Systems, Ltd.

    发明人： Masahito SONEHARA ,  Yoichiro KOBAYASHI

    IPC分类号： H02H3/18 ,  H02H1/00 ,  B60R16/033 ,  G01R31/04

    摘要： There is provided an electronic control unit capable of detecting an abnormality of a dark current while suppressing increase in the size of a circuit. The electronic control unit includes a control unit that operates with a current supplied via a power-supply input terminal from a battery, and a diode arranged on a power supply path connecting the power-supply input terminal with the control unit and serving as a reverse connection protection element that prevents a reverse current when the battery is reversely connected to the power-supply input terminal, and detects an abnormality of a dark current flowing through the diode based on a voltage difference between a voltage on the power-supply input terminal side of the diode and a voltage on the control unit side.

    Load-Driving Circuit
    5.
    发明申请
    Load-Driving Circuit 有权

    公开(公告)号：US20170179939A1

    公开(公告)日：2017-06-22

    申请号：US15116093

    申请日：2014-12-08

    申请人： Hitachi Automotive Systems, Ltd.

    发明人： Masahito SONEHARA ,  Youichirou KOBAYASHI

    IPC分类号： H03K17/082 ,  H03K17/06

    CPC分类号： H03K17/0822 ,  H03K17/063 ,  H03K2217/0027 ,  H03K2217/0063 ,  H03K2217/0072

    摘要： A load-driving circuit for receiving a supply of power from a power source and driving a load, wherein the load-driving circuit is provided with: a high-side switching element; a low-side switching element; a high-side current detection circuit connected in parallel to the high-side switching element, the high-side current detection circuit detecting a high-side driving current; and a fault detection circuit for detecting the fault state of the load-driving circuit from the output result of the high-side current detection circuit. The high-side current detection circuit is provided with a high-side sense switching circuit operating in response to a gate signal that is different from the high-side switching element, the high-side sense switching circuit comprising a device of the same type as the high-side switching element. The output result of the high-side current detection circuit, the gate signal of the high-side switching element, and the gate signal of the high-side sense switching element are input and the fault states are detected apart from each other when the connection terminal between the load-driving circuit and the load is in a state of short circuit with the positive electrode side of the power source or in a state of short circuit with the negative electrode side of the power source.

    Load Drive Control Device
    6.
    发明申请
    Load Drive Control Device 有权
    负载驱动控制装置

    公开(公告)号：US20150381159A1

    公开(公告)日：2015-12-31

    申请号：US14769295

    申请日：2013-12-13

    申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.

    发明人： Takahiro KAWATA ,  Ryoichi OURA ,  Masahito SONEHARA ,  Yoshitaka ABE ,  Takeo YAMASHITA

    IPC分类号： H03K17/16 ,  H03K3/012 ,  H03K3/013

    CPC分类号： H03K17/16 ,  H03K3/012 ,  H03K3/013 ,  H03K17/08 ,  H03K17/164 ,  H03K2017/0806

    摘要： Provided is a load drive slope control device that can reduce EMI noise, and power loss and heat generation when a drive transistor is turned on and off, and can prevent excessive high temperature-induced damage to the drive transistor at an excessive high temperature. Disclosed is a load drive control device including: a drive transistor that drives a load; a pre-driver that drives the drive transistor via an ON/OFF control terminal of the drive transistor; a capacitor that is connected to an input side of the pre-driver, a first current source that is ON/OFF controlled by a first signal, and generates current which is charged to the capacitor; and a second current source that is ON/OFF controlled by a second signal, and generates current for discharging the capacitor, in which an output voltage from the pre-driver is changed by charging or discharging the capacitor, the drive transistor is turned on and off by the output voltage from the pre-driver, and a linear ascending gradient and a linear descending gradient of the waveform of a voltage driving the load are obtained by turning on and off the drive transistor.

    摘要翻译： 提供了一种负载驱动斜率控制装置，其可以在驱动晶体管导通和截止时降低EMI噪声，功率损耗和发热，并且可以在过高的温度下防止对驱动晶体管的过高的高温损坏。 公开了一种负载驱动控制装置，包括：驱动负载的驱动晶体管; 通过驱动晶体管的ON / OFF控制端驱动驱动晶体管的预驱动器; 连接到所述预驱动器的输入侧的电容器，由第一信号控制的ON / OFF的第一电流源，并且产生被充电到所述电容器的电流; 以及由第二信号控制的ON / OFF的第二电流源，并且通过对电容器进行充电或放电来产生来自预驱动器的输出电压的电容器的放电电流，驱动晶体管导通， 通过驱动晶体管的导通和截止来获得驱动负载的电压的波形的线性上升梯度和线性下降斜率。