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TIDA-00120: Issues for 48V System

Part Number: TIDA-00120
Other Parts Discussed in Thread: CSD19531Q5A, CSD19532Q5B, CSD18502Q5B, CSD18532Q5B, TIDA-010042

Hi Team,

I am using TIDA-00120 reference design for 48V System.

I have replaced the CSD18532Q5B with CSD19531Q5A and CSD18502Q5B with CSD19532Q5B. 

While testing MPPT with Solar panel (Voc = 86V, Vm = 72V) i am facing the issues in the board. MOSFETS, MSP430 , SM72295MA got burnt. (Battery Connected 12V x 4)

Then i tested with another panel which has Voc = 76V, Vm = 64V even though the components got burnt. What would be the issue here? (Battery Connected 12V x 4)

What is the input voltage cutoff for the 48V system?

Should i use higher rated MOSFETs to solve my issue?

Anyone please resolve my issue

regards

Naresh