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LM5117输出负24V带电子负载电流可以达到4A,实际带负载好像保护了输出电压跳变

Other Parts Discussed in Thread: LM5117, LM3886

LM5117输出负24V带电子负载测试电流可以达到4A没问题,只是MOS管很烫,实际带负载好像保护了输出电压跳变,电压指示LED灯闪烁,请问下怎么回事,实际负载最大需要供电电流也才3A,还有请问下,MOS管输出2A电流就很烫,是有问题吗,