Q4 & Q5 are to aid switch off timing, they are not drivers, they ensure that the FET being switched off is switched off quickly and before the other FET switches on.
Simplified "Dead Time".
Simplified "Dead Time".
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I suspect the 22R gate resistors will be too high for the 4227's.
If the 4227 doesn't switch on fast enough 2092 thinks there is a short and reset.
I found mine was borderline with 10R so probably 4R7 would be a good value.
I tried a couple of ways of driving multiple 4227 gates.
1/ TC4420 6 amp gate driver.
2/ Push pull stage using discrete transistors.
Both worked well.
If the 4227 doesn't switch on fast enough 2092 thinks there is a short and reset.
I found mine was borderline with 10R so probably 4R7 would be a good value.
I tried a couple of ways of driving multiple 4227 gates.
1/ TC4420 6 amp gate driver.
2/ Push pull stage using discrete transistors.
Both worked well.
