Hi support team
在使用过程中,发现BAT和SYS引脚短路,将IC摘下后,不再短路,IC内部应该已经坏了,目前已经损坏了10多块板子了。
软件配置IBUS电流限制3A,充电电流进电池为1A.
L12电感规格
1uH DCR 44m ohm(TYP) 50m ohm(Max) 温升电流 4.5A(Max) 5A(TYP) 饱和电流 6A(Max) 5.2A(TYP)
原理图以及损坏现象还有PCB如下,请分享一些分析建议,谢谢。





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Hi support team
在使用过程中,发现BAT和SYS引脚短路,将IC摘下后,不再短路,IC内部应该已经坏了,目前已经损坏了10多块板子了。
软件配置IBUS电流限制3A,充电电流进电池为1A.
L12电感规格
1uH DCR 44m ohm(TYP) 50m ohm(Max) 温升电流 4.5A(Max) 5A(TYP) 饱和电流 6A(Max) 5.2A(TYP)
原理图以及损坏现象还有PCB如下,请分享一些分析建议,谢谢。





您好,The schematic looks okay. The layout does not follow the datasheet and EVM recommended layout but that should not result in damage, only output power limitation. Most likely, the cause is from 4S battery pack hot plug. Is there a specific event, like battery attach or remove, that damage occurs? Is the transient suppressor diode D2 damaged as well?