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TPS4811-Q1: TPS4811 CS+ CS-管脚很容易烧毁

Part Number: TPS4811-Q1

如图: 先上48V电(负载电) 然后上12V(控制电),下12V电,在下48V电,在上48V电,马上就会烧,请问下应该做哪些措施呢?