# Mosfets gate driver IC criteria

I am designing a driver circuit to drive 4 mosfets connected in parallel as shown in figure below (4 mosfets instead of 3).

I have look around the internet and there are a few criteria to look into for selecting a suitable gate driver.

1. Maximum average output current of the driver must be higher than calculated from the mosfet. (How do I calculate this?)

2. Peak gate current must be higher than calculated. I peak=(Vdr-V_plateau)/(Rg+Rg_internal)?

3. Switching frequency. (assume to be 20 kHz)

QUESTION!

1. How do I calculate the average current?

2. Is the peak gate current formula above correct? If not, how should I calculate it?

3. Is there anything else I should look into?

Got stuck with this for quite some time, searching around google and my question is still unsolved. Please guide me through this. Thanks in advance! Regards, Brandon Lok Toong Yin