I have an N-channel MOSFET called BUK9Y07-30B,115 and a bootstrap IC called PMD2001D,115. I'm going to connect the bootstrap IC with the gate of the MOSFET. But I don't know if I need a resistor before and after or only before or after.
I know that the gate of the MOSFET have a capacitance and it takes time for it to charge up. When the gate is fully loaded, then current can pass from drain to source. Current don't flow through gate to source. Instead, when the operator stop using the gate, e.g lower the voltage, then the current at the gate is going back where it comes from. Just as a capacitor.
So my question, if I want a very fast CMOS-shaped PWM at the gate at the MOSFET. Do I really need a resistor before or after or both the MOSFET/Bootstrap IC?
Because, I know if I place e.g 10k resistor before the bootstrap IC, then it will increase time to power up the NPN transistor and discharge the PNP transistor when PWM goes to 0V. The same thing happens to the other side of the bootstrap IC.
But is it required?