Hi,
That datasheet is quite minimalist... Not a "same" part, but to show the general idea, hopefully, the IRF9520 datasheet provides a lot more info. to gauge what voltage you'd actually need on the gate for x Amps. The graph below is one way (/one part) of figuring out what's actually needed (and probably still getting it wrong, in my case)
Maybe reading some more generalised documentation about MOSFET theory of operation and/or device design could be helpful to establish rules of thumb to know what is and isn't needed?
Perhaps thinking of a MOSFET as sort of like a BJT that needs a minimum voltage and current to operate, and a few volts more for higher currents, but not necessarily the full supply rail voltage could be a helpful approach. Or the dreaded faucet/tap analogy...
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Derate, it it says 17V max. then be circumspect and go a little lower, at a guess 10 to 15V may be amply sufficient most of the time. Max. is "do not go there" area for any part. And pulsed specifications are for micro- and millisecond amounts of time. I may be wrong, but Ohm's law probably can give some idea if the intention is unrealistic r.e. PD.