Hi.There are 8mil trace for gate driver. Is it enought for 4amps peak current? How much parasitic inductance will such a thin trace create? Could it be a problem?
I used to use 15-25mil trace for gate driver and see no issue, just wonder how far it can go until reach the limit. 8mil trace will buy much more free space for sure.
The trace is always referencing a very close gnd plane (sandwiched for most of its length in between gnd planes actually). This reduces its inductance by a lot, protects it against noise.
Also, the peak current, about 2 amps in our case as per gate resistance iirc, is felt for just a fraction of the time. Mean current is much much lower. -> heat is also no issue.
Overall the result mattes, and its switching well