[SI-LIST] Re: Spectre S-parameter based PDN simulations

Suresh,
what exactly do you mean by *"the voltage node supplying the die blows up" *.
Does your transient simulation every get past finding a DC operating point?
The more details you provide the easier to narrow it down. Most likely your
S parameters are ill-conditioned.

Vadim



On Fri, Dec 19, 2008 at 10:54 AM, Suresh Subramaniam <ssubram@xxxxxxxxxx>wrote:

> Hello All,
>
> I am trying to set up a PDN simulation in Cadence Spectre. The PDN
> includes S-parameters of the package and some RLC models for the
> decoupling caps (PCB,package) and VRM. I can use this network to do
> AC/S-parameter analysis without any trouble but when I include this
> network along with the die model in transient simulations, the voltage
> node supplying the die blows up.
>
> I have tried to look in the Cadence Sourcelink database and also tried
> the various options available in the N-port properties dialog box to no
> avail.
>
> I was wondering if anyone out there has faced this problem with Spectre
> and solved it? If yes, could you please give me some pointers on the
> same.
>
> Thanks very much.
>
> Best Regards,
>
> Suresh Subramaniam
>
>
>
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