Hi folks!
I’m posting this in ‘Beginners’, because I’m sure it’s kind of a beginner question.
I wonder: what will happen, if the gate-to-source voltage on a p-channel MOSFET will exceed its absolte maximum given in the data sheet? (I noticed, I could also ask this question the other way around, regarding n-channel MOSFETs.)
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Given this MOSFET:
IRF9510, like almost all MOSFETs I’ve seen so far, there is a maximum Vgs of ±20V stated. What will happen if I apply more?
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A little bit of background:
I’m planning to switch let’s say 48V with such a p-channel MOSFET. For turning it
off, I of course have to pull up the gate
up to these 48V. When then turning it
on, I need to
lower the gate voltage. But when I now ‘lower’ it by pulling it simply to GND, I suppose I have produced a Vgs of -48V, right?
Is this harmful/deadly for the MOSFET? Why? (Physicists answer expected.
)
(Or am I maybe totally on the wrong track here?)Thank y’all very much in advance!
Darkwing!