hello, i'm doing a buck-boost for some high current application , and i cant find a mosfet driver ic (at least in my country) that has no lag and can deliver the rise time
i used a totem pole till now but now the lag it has just renders it unusable (150µS), so i tried a 555 directly and the rise and fall time are pretty good (100nS) but as the data sheet says 200mA max and in short circuit i measured 410mA @12V, but for the rise time (100nS) it's delivering about 140mA (14nC/100nS = 0.14A, i'm not sure if i got it right, so correct me if it's wrong)
i know the 555/556 are like "generic" devices so how long will it last under that load? it doesnt get hot or anything and it's working at 33khz (but the idea is 500Khz)
and btw, any better ic to drive mosfet? i think that i'll have to make it synchronous so if i could get to about 25nS that would be optimal
any sugestion? thanks in advance
note: i'm really noob to this topic so i might have missed something obvious