What's the effective resistance of copper wire on PCB?

[pianomania]

I wanna know the effective resistance of copper wire on PCB.
Since the effective resistance influence the compenstaion of PWM power IC,
the copper resistance will generate a zero , but we can't estimate the value, it will influent the stability.

 

[kender]

It depends on the copper thickness and trace width, of course. You could ask your PCB manufacturer for the datasheet on the copper that he's using.

 

[House_Cat]

There are several free trace resistance calculators available. Check out the following:

https://www.polarinstruments.com/products/utilities/trc100.html
https://circuitcalculator.com/wordpress/2006/01/24/trace-resistance-calculator/
**broken link removed**

This is also a good tool, but it isn't free ($150USD):
https://www.ultracad.com/ucadpcb.htm