[SI-LIST] Re: PCB trace width calculation for pulsed current
- From: steve weir <weirsi@xxxxxxxxxx>
- To: "abin.cv" <abin.cv@xxxxxxxxxxxxxxxxxx>
- Date: Tue, 08 Jun 2010 02:15:13 -0700
That cross section just meets the IPC estimate. Your options are:
1. Live with what you have.
2. Increase the cross section.
3. Add a heat sinking device or structure to lower thermal resistance to
ambient.
4. Add a bus jumper
Your primary concern should be that current distribution near the end
points is unlikely to be uniform, creating hot-spots.
Steve
abin.cv wrote:
> Hi,
> I am designing PCB for a power supply rated 33V,18A 20% duty cycle.
>
> Due to less space availablity ,i could only provide a max of 200 mill trace
> width of 1.5 oz copper
> which would carry a constant peak current of 9.87A at 10deg raise.
>
> Please give any suggestion for improvement.
>
> Thanks in Advance,
> Abin
>
>
>
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