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    • 8. 发明公开
    • SWITCH DEVICE, POWER CONVERSION DEVICE, MOTOR DRIVE DEVICE, FAN, COMPRESSOR, AIR CONDITIONER, REFRIGERATOR, AND FREEZER
    • SCHALTVORRICHTUNG,STROMUMWANDLUNGSVORRICHTUNG,MOTORANTRIEBSVORRICHTUNG,GEBLÄSE,VERDICHTER,KLIMAANLAGE,KÜHLSCHRANKUND GEFRIERSCHRANK
    • EP3051676A4
    • 2017-03-29
    • EP13894471
    • 2013-09-25
    • MITSUBISHI ELECTRIC CORP
    • UEMURA KEISUKESHIMOMUGI TAKUYAARISAWA KOICHISHINOMOTO YOSUKEUMEHARA SHIGEOURA SHINICHIROTANIKAWA MAKOTO
    • H02M1/08H02M7/48
    • H02M7/04H02M1/08H02M1/32H02M7/44H02M7/5387
    • An object of the present invention is to provide a switch device in a power conversion device that is located between a power supply and a load, wherein the power conversion device includes a shunt resistance and a switching element and is capable of executing stable control, and the switch device includes a switching element 21a that includes a gate terminal, a gate drive circuit 51a that applies a drive voltage V cc to a gate terminal of the switching element 21a, and a control unit 8 that generates a drive signal to be supplied to the gate drive circuit 51a, and wherein a value obtained by subtracting a threshold voltage V th of the switching element 21a from the drive voltage V cc to be applied to the gate terminal of the switching element 21a is greater than a product of a resistance value R sh +R dc from an emitter of the switching element 21a to a negative electrode of the gate drive circuit 51a and a maximum current value I peak that flows through the switching element 21a.
    • 本发明的目的是提供一种位于电源和负载之间的电力转换装置中的开关装置,其中电力转换装置包括分流电阻和开关元件,并且能够执行稳定的控制,以及 开关装置包括开关元件21a,该开关元件21a包括栅极端子,对开关元件21a的栅极端施加驱动电压V cc的栅极驱动电路51a和产生要供给到的驱动信号的控制单元8 栅极驱动电路51a,并且其中通过从施加到开关元件21a的栅极端子的驱动电压V cc减去开关元件21a的阈值电压V th获得的值大于电阻值的乘积 R sh + R dc从开关元件21a的发射极到栅极驱动电路51a的负极和流过开关元件21a的最大电流值I peak。