FPGA Central

Istvan Nagy,
ChipQuake is actually the software tool used in the hands-on workshops on noise coupling in integrated circuits.* It is not specific for board designers or for IC designers.* It addresses the noise generation and coupling at the whole co-design (chip/package/PCB) level, and it provides the results as they are seen by the circuits on chip (since ultimately this is the place where the noise on supply and substrate creates problems).* The current version 1.0 is distributed to the hands-on workshops attendants to use and keep, and it is also shipped with the book.* This version is not sold separately mainly because it requires training, which is done either through the workshops or through self-learning from the book..* The design setup and design parameters input are quite complex and far away from a "one-button simulation run" tools.* This why I suggested you to look into the user guide.

Best Wishes,
Cosmin

--- On Mon, 2/9/09, Istvan Nagy <buenos (AT) freemail (DOT) hu> wrote:
From: Istvan Nagy <buenos (AT) freemail (DOT) hu>
Subject: Re: [SI-LIST] Re: What are power integrity tools available out there? Anything inexpensive that works?
To: ci249534 (AT) yahoo (DOT) com, "Aleksandr Oysgelt" <aleks (AT) aristanetworks (DOT) com>, si-list (AT) freelists (DOT) org
Date: Monday, February 9, 2009, 11:07 AM







hi
*
can we get the software too, or just the
manual?
i saw that it is for the book.
i dont really want to buy*your book, since i am not doing*chip
design (i think the book is about that), but i do board-level design.
i would be interested in trying it.
*
Istvan Nagy
cct.
*

----- Original Message -----
From:
Cosmin Iorga

To: Aleksandr Oysgelt ; si-list (AT) freelists (DOT) org ; Istvan Nagy

Sent: Monday, February 09, 2009 4:42
PM
Subject: Re: [SI-LIST] Re: What are power
integrity tools available out there? Anything inexpensive that works?





Hi Aleks,

You may take a look also at ChipQuake
from http://www.noisecoupling.com.* It
does not have extraction capabilities, but it covers the pre-layout
decoupling
capacitors selection and placement on the PCB, package, and chip,
and it also computes the power distribution impedance curve and
resonance peaks.* There is a downloadable user guide on that web
site that may give you more insight into this tool.

Best
Regards,
Cosmin
NoiseCoupling.com


--- On
Sun, 2/8/09, Istvan Nagy <buenos (AT) freemail (DOT) hu>
wrote:

From:
Istvan Nagy <buenos (AT) freemail (DOT) hu>
Subject: [SI-LIST] Re: What
are power integrity tools available out there? Anything inexpensive
that works?
To: "Aleksandr Oysgelt"
<aleks (AT) aristanetworks (DOT) com>, si-list (AT) freelists (DOT) org
Date:
Sunday, February 8, 2009, 2:50 AM

hi

some free tools available:
- FEMM. to do post-layout AC or DC voltage drop and current distribution
analysis on power planes (opensource, fully free, with windows version):
http://femm.foster-miller.net/wiki/HomePage
- Sphynx. frequency domain (s-parameter) analisys of
power planes, with
capacitors. creating macromodel, checking resonant peaks.
you can download a demo with max 20000 nodes limitation and no CAD import,
or buy the full version.
http://www.powerintegrity.net/sphinx
- QUCS: circuit simulator with s-parameter file import for AC analysis. I
use this with models exported from sphynx, for a full power distribution
system freq.domain AC analysys (macromodelling). (opensource, fully free,
with windows version)
http://qucs.sourceforge.net/
example system anaysis:
http://www.buenos.extra.hu/download/...Design_prj.rar

To do a complete system analisys with siwave, you need to buy the Nexxim
circuit simulator too, also from Ansoft. dcdc converter, powerplane,
package, chip, package-caps... simulation together

"Have non-SI expert be able to run the tools" -i am not shure if this
makes
any sense.

regards,
Istvan Nagy
Concurrent
Technologies, UK.


----- Original Message -----
From: "Aleksandr Oysgelt" <aleks (AT) aristanetworks (DOT) com>
To: <si-list (AT) freelists (DOT) org>
Sent: Saturday, February 07, 2009 7:45 PM
Subject: [SI-LIST] Re: What are power integrity tools available out there?
Anything inexpensive that works?


>I am starting to look at power integrity tools and would like to know what
> is available and whether there are any "slimmed down" versions
that can do
> what I need at lower price than full-blown Sigrity-like packages.
> Currently we use "spreadsheet" approach where we analytically
compute
> plane
> impedance based on self+mounting impedances of various types of caps plus
> plane impedance. This is fairly accurate to 100MHz or so. However, it
> does
> not help us at all in figuring out where the plane resonances are and
> where
> we should place caps to
help with them.
>
> So, here is my wishlist. I don't require all to be addressed by same
> tool.
> Depending on price - I'd be happy to get just some of the bullet
points
> and
> not all.
>
> - Figure out plane impedance curve
> - Figure out plane resonance - where should we place caps
> - Figure out resistive losses plus current distribution
> - Be able to figure out tradeoffs between using higher capacitance
> plane/ground structure vs using large number of caps vs using different
> types of caps.
> - Do pre and post layout simulation
> - Have non-SI expert be able to run the tools
>
> So far Sigrity and HyperLynx PI (just announced) seem to do the job but at
> quite substantial cost. I keep asking myself a question - what problem do
> they solve vs cost (in license fees and training/simulation time) vs using
>
spreadsheet/simple simulation. So far I don't have a clear answer -
thus
> I
> am asking you for other ideas on approaching the power integrity problem.
>
> Thank you
> Aleks
>
>
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