Hello,
I have a question on the MOSFET selection for the reverse battery protection in TIDA-00901 design reference. Vishay SQJ422EP-T1-GE3 was selected for 20-A application. During the normal operation (no reverse voltage), the MOSFET is believed to be operating at DC region. The SOA chart below shows that the maximum allowable current I_D should be less than 5-A at 12-V V_DS. Thus, the MOSFET is not safe to be operated in the case. I am wondering whether there is anything wrong in my understanding.
Thanks,
John