[SI-LIST] Re: Ferrite model

Kami-

I don't have a model for that particular ferrite bead, however check out
a document I wrote quite a while back that describes how you can create
a very accurate model from either data sheet numbers or measured data.

The document can be downloaded here:=20

http://www.si-list.org/files/tech_files/power_filt.pdf

The method originally was written up in an old MicroSim (Pspice)
app-note and creates a frequency dependent G element table defined model
from magnitude and phase Z numbers (or equivalently from R and Xl
numbers)

The method isn't the only way to do it or even necessarily the best, but
I did have very good results with the models synthesized as described.

-Ray

-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]
On Behalf Of Kamran Azizi
Sent: Monday, April 25, 2005 11:44 AM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Ferrite model

By any chance does anyone have an actual model for Murata Ferrite with
the part number of BLM18HG471SN. What we get from the lab measurements
is totally diff. from what we see in the simulation.=20

=20

Any advice on how I can proceed.?

=20

Kami



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