I am developing project of MOSFET switch that is going to be used as power switch device in application with 12S li ion battery. To keep power wastes in the minimum level, I have to provide the lowest possible RDSon value. In that application, the maximum voltage of battery will be at the level of 50.4V, so I've decided to use 60V MOSFETs. I really dont want to use 80V ones, as we know, the higher VDS breakdown voltage is - the more RDSon the MOSFET will have. But I am not sure, if this MOSFET will sustain any unpredicted, induced peaks of voltage (there is also BLDC motor on that power rail).
My question: Am I able to protect this 60V MOSFETs from unpredicted, induced overvoltage breakdown peaks?
Edit: Okay, I will ask in another way - Am I able to specify the value of overvoltage peaks from BLDC motor when I am disconnecting circuit in, lets say, 200A of load? Is the BLDC motor driver protected from that kind of problem - disconnecting power in full load?