如题：充电器（充电器9V,电池8.4V）插入瞬间，整个系统电源（IO电源）出现了20ns-30ns的高电压(20v-30V)脉冲，这会损坏一些IC的接口，各位大侠有遇到过类似问题吗？有什么好的建议，谢谢了！
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