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1. 发明授权

US07888976B2 Load-driving circuit having two transistors switched for heat dissipation 有权
标题翻译：具有两个晶体管的负载驱动电路用于散热
公开(公告)号：US07888976B2
公开(公告)日：2011-02-15
申请号：US12382438
申请日：2009-03-17
申请人： Tomohisa Ose , Shouichi Okuda
发明人： Tomohisa Ose , Shouichi Okuda
IPC分类号： H03B1/00
CPC分类号： H03K17/08104 , H03K17/6872 , H03K2017/0806
摘要： A load-driving circuit supplies electric current to a load, such as a resistor of an airbag squib. The load-driving circuit includes high side and low side current control circuits, both connected in series. Each current control circuit is composed of a driving transistor, a resistor and a current mirror circuit for controlling operation of the driving transistor. The components in the load-driving circuit are positioned in an integrated circuit chip to generate different temperature gradients among the components. For example, the low side resistor is positioned close to the high side driving transistor, so that the low side resistor is heated by the high side driving transistor controlled under a constant current control. As the low side resistor is heated, the high side driving transistor is switched from the constant current control to a full-on control. In this manner, controls of both driving transistors are automatically switched thereby to avoid overheating of one of the driving transistors.
摘要翻译：负载驱动电路向诸如气囊爆管的电阻器的负载提供电流。负载驱动电路包括串联连接的高侧和低侧电流控制电路。每个电流控制电路由用于控制驱动晶体管的操作的驱动晶体管，电阻器和电流镜电路组成。负载驱动电路中的组件位于集成电路芯片中，以在组件之间产生不同的温度梯度。例如，低侧电阻器位于靠近高侧驱动晶体管的位置，从而通过在恒定电流控制下控制的高侧驱动晶体管来加热低边电阻。当低边电阻被加热时，高侧驱动晶体管从恒定电流控制切换到全开控制。以这种方式，两个驱动晶体管的控制自动切换，从而避免其中一个驱动晶体管过热。

2. 发明申请

US20120242376A1 LOAD DRIVE APPARATUS AND SEMICONDUCTOR SWITCHING DEVICE DRIVE APPARATUS 审中-公开
标题翻译：负载驱动装置和半导体开关装置驱动装置
公开(公告)号：US20120242376A1
公开(公告)日：2012-09-27
申请号：US13426949
申请日：2012-03-22
申请人： Tomohisa OSE , Yoshiyuki Hamanaka , Yasutaka Senda , Ryotaro Miura , Kenji Yamamoto
发明人： Tomohisa OSE , Yoshiyuki Hamanaka , Yasutaka Senda , Ryotaro Miura , Kenji Yamamoto
IPC分类号： H03K17/08
CPC分类号： H03K17/0828 , H03K17/14
摘要： A load drive apparatus includes a switching device, a gate drive circuit, a clamp circuit, a temperature detection circuit, and an arithmetic device. The switching device controls an on-off state of current supply to a load. The gate drive circuit turns on the switching device by controlling a gate voltage of the switching device so that the switching device operates in a full-on state. The clamp circuit clamps the gate voltage of the switching device to a clamp voltage lower than the gate voltage in the full-on state and higher than a mirror voltage. The temperature detection circuit detects a temperature of the switching device. The arithmetic device calculates a voltage corresponding to a variation in a mirror voltage based on the detected temperature and controls the clamp voltage in the clamp circuit so as to be the calculated voltage.
摘要翻译：负载驱动装置包括开关装置，栅极驱动电路，钳位电路，温度检测电路和运算装置。开关装置控制向负载供电的通断状态。栅极驱动电路通过控制开关器件的栅极电压来接通开关器件，使得开关器件工作在全开状态。钳位电路将开关器件的栅极电压钳位到低于栅极电压的钳位电压，并且高于镜电压。温度检测电路检测开关装置的温度。算术装置根据检测到的温度来计算与镜电压的变化对应的电压，并将钳位电路中的钳位电压控制为计算出的电压。

3. 发明申请

US20090278572A1 Load-driving circuit having two transistors switched for heat dissipation 有权
标题翻译：具有两个晶体管的负载驱动电路用于散热
公开(公告)号：US20090278572A1
公开(公告)日：2009-11-12
申请号：US12382438
申请日：2009-03-17
申请人： Tomohisa Ose , Shouichi Okuda
发明人： Tomohisa Ose , Shouichi Okuda
IPC分类号： H03B1/00
CPC分类号： H03K17/08104 , H03K17/6872 , H03K2017/0806
摘要： A load-driving circuit supplies electric current to a load, such as a resistor of an airbag squib. The load-driving circuit includes high side and low side current control circuits, both connected in series. Each current control circuit is composed of a driving transistor, a resistor and a current mirror circuit for controlling operation of the driving transistor. The components in the load-driving circuit are positioned in an integrated circuit chip to generate different temperature gradients among the components. For example, the low side resistor is positioned close to the high side driving transistor, so that the low side resistor is heated by the high side driving transistor controlled under a constant current control. As the low side resistor is heated, the high side driving transistor is switched from the constant current control to a full-on control. In this manner, controls of both driving transistors are automatically switched thereby to avoid overheating of one of the driving transistors.
摘要翻译：负载驱动电路向诸如气囊爆管的电阻器的负载提供电流。负载驱动电路包括串联连接的高侧和低侧电流控制电路。每个电流控制电路由用于控制驱动晶体管的操作的驱动晶体管，电阻器和电流镜电路组成。负载驱动电路中的组件位于集成电路芯片中，以在组件之间产生不同的温度梯度。例如，低侧电阻器位于靠近高侧驱动晶体管的位置，从而通过在恒定电流控制下控制的高侧驱动晶体管来加热低边电阻。当低边电阻被加热时，高侧驱动晶体管从恒定电流控制切换到全开控制。以这种方式，两个驱动晶体管的控制自动切换，从而避免其中一个驱动晶体管过热。

4. 发明申请

US20150153751A1 POWER SUPPLY CIRCUIT AND ELECTRONIC CONTROL UNIT EMPLOYING THE SAME 审中-公开
标题翻译：电源电路和使用该电源的电子控制单元
公开(公告)号：US20150153751A1
公开(公告)日：2015-06-04
申请号：US14382022
申请日：2013-03-05
申请人： Eiichiro Shigehara , Keisuke Hata , Junichi Fukuta , Tomohisa Ose , Yusuke Shindo
发明人： Eiichiro Shigehara , Keisuke Hata , Junichi Fukuta , Tomohisa Ose , Yusuke Shindo
IPC分类号： G05F1/575
CPC分类号： G05F1/575 , G05F1/56 , G06F1/28 , G06F1/305
摘要： A power supply circuit converts an input electric power into a target voltage and outputs the target voltage is equipped with a power semiconductor element that is connected between an input and an output, a drive circuit that adjusts operation of the power semiconductor element on the basis of a result of a comparison between an output voltage of the power supply circuit and a threshold voltage based on a first reference voltage, and a first monitoring circuit that compares the output voltage with a normal range based on a second reference voltage and outputs a first signal when the output voltage is deviant from the normal range. In addition, the first reference voltage and the second reference voltage are generated in different reference voltage generation circuits.
摘要翻译：电源电路将输入电力转换为目标电压，并且输出目标电压配备有连接在输入和输出之间的功率半导体元件，驱动电路，其基于以下方式调整功率半导体元件的操作：电源电路的输出电压和基于第一参考电压的阈值电压进行比较的结果;以及第一监视电路，其基于第二参考电压将输出电压与正常范围进行比较，并输出第一信号当输出电压偏离正常范围时。此外，第一参考电压和第二参考电压在不同的参考电压产生电路中产生。

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