[SI-LIST] Re: Copper width that has DCR within target spec
- From: Istvan Novak <istvan.novak@xxxxxxxxxxx>
- To: wufengthu@xxxxxxxxx
- Date: Sun, 29 Sep 2013 23:06:36 -0400
Hi Feng,
What you say is all true, but unfortunately getting a reasonable
estimate for DC resistance by hand calculations under realistic
(complex) geometries is not possible. Even at DC the current density
has a two (or three, in multi-layer plane structures) dimensional
distribution, so you need a tool to mesh the structure and calculate the
DC resistance.
Regards,
Istvan NovakOracle
On 9/28/2013 2:08 AM, Feng Wu wrote:
> Hi Mark
> It is definitely true, we need to consider impedance from AC point of view.
> However I would like to check/design the DC performance at beginning before
> checking/designing AC performance. In practice this is proved to be more
> effiecient way. There are lots of reason. One of the most important is,
> although the DC point of Z is R, yet we can't obtain all the DC information
> accurately, sufficiently and efficiently by AC simulation tool.
>
> Thanks
> Feng
>
>
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