IGBT driver circuit mosfet selection

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Rajnaveen

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why we use P channel and N channel MOSFET in IGBT driver circuit?cant we use only n channel
 

To drive it high you'd have to accept that VOH=VCC-VT(N).
That is a pretty harsh penalty especially if VT(N) is (say) 5V
and Vcc(min) is 8V. It's on you, to figure out what VIH(min)
has to be and whether your NMOS source follower drive can
reliably get there, across conditions.
 

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