1.输入32V,输出9V,输出接32V电池包。正常
2.输入6.6V,输出5V,输出短接32V电池包,烧芯片
3.4脚FB已经短接输出引脚
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HI
短接是相当于热插拔式的接入,如果是这样,确认是否输出输入反向电压压差过大导致?