I need to make some changes to some of my circuit board designs to handle higher current of about 1A at about 3V. I am just wondering what's the best way to go about this? Just increase the trace width? Or increase the copper thickness? Or a combination of both? Also, what are typical thicknesses? What issues are there with each method?

Thanks,
Mike

 

hi.
Look at page #7 of this tutorial.
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Have a look on google for track width calculators.
You can input copper ounces and current required and they will give you minimum required track width.

 

Ericgibbs, that's a good tutorial. Thanks! Do you happen to know of one like that for 4 or more layer boards?

 

hi,
This is a link to a vid for Altium multilayer design, also the link has nested links for pcb design.

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increasing trace width is the best way assuming you have the room to do so. thicker copper = more money.. thicker trace does not

 

a cheaper way is to solder wire on the traces that need it. if a design is already done. and specifying thicker traces for a layer on a 4 layer board could be very expensive too. for a little more current carrying, tin the traces.

 

Ericgibbs, that's a good tutorial. Thanks! Do you happen to know of one like that for 4 or more layer boards?

Most of the calculators have an option for "internal" or "external" traces.. that will account for your multi-layers..

 

Also with thicker copper you might have problems with fine pitch pads and traces.