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我用TI的一款降压芯片 TPS62170 输入12V输出4.5V发现烧坏的概率好大，找不到原因。另外同时用这款芯片做的5V转3.3V就没有这种情况。
电源芯片还是建议去“电源管理”版块咨询。 负责power的工程师会为您解答。
