I need to calculate the minimum trace width on my PCB for around 25 amperes (a few steppers.) When I go to a calculator, it asks me for its thickness. Here's one from Digikey, and another from 4pcb. They both ask me to enter the thickness. Isn't that what they are supposed to calculate given the amperes and temperature rise?
I think I'm missing something.
Could you explain what I'm supposed to add, or what they mean by "thickness"?
Is the "Trace Length" the distance between the power terminals and the GND+VCC of the stepper drivers? That is, how long the trace will be.