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igbt是什么
更新时间: 2021-11-12 10:13:31  

1、IGBT是绝缘栅双极型晶体管,是由BJT双极型三极管和MOS绝缘栅型场效应管组成的复合全控型电压驱动式功率半导体器件, 兼有MOSFET的高输入阻抗和GTR的低导通压降两方面的优点。GTR饱和压降低,载流密度大,但驱动电流较大。MOSFET驱动功率很小,开关速度快,但导通压降大,载流密度小。

2、IGBT综合了两种器件的优点,驱动功率小而饱和压降低。非常适合应用于直流电压为600V及以上的变流系统如交流电机、变频器、开关电源、照明电路、牵引传动等领域。

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