I designed a Buck Converter for my senior design and need to put that on PCB which will power up the circuit.
I calculated the with of the trace for the current I need which is 8 Amps. Based on the calculation I need 0.13 inch of trace. My question is do I need to make the thickness of the traces same for the Capacitors as well or only thick traces for input and output of the buck converter. Since, capacitor only holds the voltage, I don't see the point of making the traces bigger for the capacitor. I need to make sure that my assumptions are right before I make the PCB order. The schematics of the converter and the traces are down below.