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TPS40057上管偏烫问题请教

Other Parts Discussed in Thread: TPS40057

使用TPS40057搭配MOS管QM3092M6+QM3096M6,输入19V,输出12V,拉载4A,发现上管温度偏高约7~10℃。

测量上管gate极波形有米勒效应,如下图所示,请问如何消除米勒效应,使上管不那么烫。