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LM5121芯片 LO脚输出正常,HO脚无输出。

Other Parts Discussed in Thread: LM5121

LM5121芯片 LO脚输出正常,HO脚无输出。请问会是哪块部分出现问题?(自举电容上有电压)

目前引脚DS、DG外没有加管子,直接将DS接到VIN,DG脚悬空,请问这样的接法是否会有问题?