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TPS62136: 内置MOSFET过流的影响

Part Number: TPS62136


Hello,
We have questions about TPS62136.
What is the wire bonding type of TPS62136, gold wire or copper wire?
When excessive MOSFET current causes the package to burn, which portion of the chip will melt first, the wire or the pad of package?
Is it possible that the pad of the chip will be burned?

The reason why I ask this question is that we have DCDC failure cases from other suppliers.
The failure mode is that the chip pad is burned, resulting in the burning of our PCB pad, then resulting in the scrapping of our PCBA.
This failure is very serious, so we intend to replace it with TPS62136.
Before replacement, we need to know more about the failure mode of TPS62136 in case of MOSFET overcurrent.
  • HI
        能够说明一下现在的不良现象,做了多少板子,不良多少?

        能否提供一下电路图,并且说明一下功率电感饱和电流多大?  可以的话将layout也放上来看一下。

        或者你可以借助webench在线仿真确认一下电路,layout datasheet上有参考以及说明,建议严格参考。

  • Hi, Johnsin:

    我们用其他供应商内置mosfet的电源芯片时,出现了3pcs内置mosfet烧毁后将PCB的焊盘也严重烧毁的案例

    TPS62136在我们的产品也有相同的应用,请问,是否有类似芯片烧毁后将PCB焊盘一起烧毁的可能

    谢谢!

  • Hi

       在论坛上十年了,我没有看到过这类不良模式。

       主要建议注意一下Powerpad的充分焊接。