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1.发明公开Current sensor using mirror mosfet and pwm inverter incorporating the same 审中-公开Spiegelmosfet gebrauchender Stromsensor und mit Demselben versehener PWM-Wechselrichter
公开(公告)号：EP1432107A3
公开(公告)日：2006-01-25
申请号：EP03029494.6
申请日：2003-12-19
申请人： Hitachi, Ltd.
IPC分类号： H02M3/156 , H02M7/5387
CPC分类号： H02M7/537 , H02M7/53871 , H02M2001/0009
摘要： A current sensor has a power MOSFET (Q1), connected between an electric load and a power supply, for controlling current that flows through said electric load, a mirror MOSFET (Q2), connected in parallel to said power MOSFET (Q1), and a current detection resistor (RC) connected between a source electrode of said power MOSFET and a source electrode of said mirror MOSFET. An inverting amplifier circuit (CP) of the current sensor (3) inverts and amplifies the voltage signal, which has been converted to voltage by the current detection resistor (RC), and outputs the signal, thereby converting positive and negative voltages generated across the current detection resistor (RC) to a positive voltage.
摘要翻译： 电流传感器具有连接在电负载和电源之间的用于控制流过所述电负载的电流的功率MOSFET（Q1），与所述功率MOSFET（Q1）并联连接的反射镜MOSFET（Q2），以及 连接在所述功率MOSFET的源电极和所述反射镜MOSFET的源电极之间的电流检测电阻器（RC）。 电流传感器（3）的反相放大器电路（CP）对由电流检测电阻器（RC）转换为电压的电压信号进行反相放大，并输出该信号，从而转换产生的正，负电压 电流检测电阻（RC）为正电压。
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2.发明公开Current sensor using mirror mosfet and pwm inverter incorporating the same 审中-公开Spiegelmosfet使用产生电流传感器和提供有相同的PWM逆变器
公开(公告)号：EP1432107A2
公开(公告)日：2004-06-23
申请号：EP03029494.6
申请日：2003-12-19
申请人： Hitachi, Ltd.
IPC分类号： H02M3/156 , H02M7/5387
CPC分类号： H02M7/537 , H02M7/53871 , H02M2001/0009
摘要： A current sensor has a power MOSFET (Q1), connected between an electric load and a power supply, for controlling current that flows through said electric load, a mirror MOSFET (Q2), connected in parallel to said power MOSFET (Q1), and a current detection resistor (RC) connected between a source electrode of said power MOSFET and a source electrode of said mirror MOSFET. An inverting amplifier circuit (CP) of the current sensor (3) inverts and amplifies the voltage signal, which has been converted to voltage by the current detection resistor (RC), and outputs the signal, thereby converting positive and negative voltages generated across the current detection resistor (RC) to a positive voltage.
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