描述
防止栅极 di/dt过高:由于采用驱动芯片,其输出阻抗较低,直接驱动功率管会引起驱动的功率管快速的开通和关断,有可能造成功率管漏源极间的电压震荡,或者有可能造成功率管遭受过高的di/dt而引起误导通。为避免上述现象的发生,通常在MOS驱动器的输出与MOS管的栅极之间串联一个电阻,电阻的大小一般选取几十欧姆。
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