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Part Number: TPS568215
系统12V输入，经过TPS568215输出5V，5V后级有多路DC-DC。
掉电时5V电压有回勾，导致后级 5V转1.8V，5V转1.5V等都存在类似的波形
电源拓补图如下：
5V掉电波形：
1.8V掉电波形：
5V电路图：
您好
https://e2echina.ti.com/support/power-management/f/power-management-forum/856841/tps568215
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