Hi Team,
I understood that the gate resistance works with 0 Ω in the following thread.
I also understand that ringing will occur instead.
When attaching ferrite beads to gate resistance, what kind of specification product should be used generally?
For example, 100 MGz @ 10 to 20 mΩ ？
Best Regars,
Kenji
Hi Kenji,
check out this great app note on gate resistor selection: it requires you to observe the gate waveform and calculate the source inductance in the system and counteract that with gate resistance. 
Depending on the type of dampening you need you can measure the source inductance and set the gate resistance as equal to or twice the reactance. This will tell you how much gate resistor you need for a corresponding ring.
In order to determine how much gate resistance is needed at a specific frequency start by determining at what frequency does the EMI become an issue and also confirm if the EMI originates from the gate loop. You can start at 0 ohms and slowly go up to about 10 ohms at your largest amplitude noise frequency.
Does this make sense? let me know the results of your calculation and testing!
thanks,
