Other Parts Discussed in Thread: TPS53681
We have a project using TPS53681+6*CSD95490；12V input，0.86V/ peak 300A output .
The equipment has been running for one year, but the CSD95490 was damaged(Cracking and VIN to PGND short), as shown in the figure below：
1、Please help to analyze the reason？
2、Please provide the calculation method of MTBF？
3、Three devices have had the same problem
We did the following test：
1、test condition：continuous output current=270A，TA=40℃，TJ=98℃.
2、Vsw to PGND test waveform（The Vsw overshoot is relatively high. We doubt whether the Vsw overshoot affects the life）？