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TPS552882-Q1: TPS552882QRPMRQ1芯片输出短路

Part Number: TPS552882-Q1
您好,
上电后,电流突然增大到15A左右,然后约10s左右,电源过流保护(20A),TPS552882QRPMRQ1芯片output短路,请帮忙看看,原理图设计和layout有没有问题.
  
 总共14层,TOP 层布局
  
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