[SI-LIST] Re: Ferrite Bead Parasitic Capacitance calculation
- From: steve weir <weirsi@xxxxxxxxxx>
- To: Jack Si <sij99@xxxxxxxxx>
- Date: Tue, 28 May 2013 04:00:14 -0700
Eyeballing that plot: Z @ 1GHz 58 Ohms
Steve.
On 5/28/2013 1:47 AM, Jack Si wrote:
> Steve,
>
> I am trying to extract from the R,X,Z plot from the vendor.
>
> As per your suggested in your doc. "CPAR can be obtained by solving
> for the parallel Admittance at a frequency well beyond the impedance
> peak". I calculated the values(From the enclosed graph) and the
> calculation as attached.
>
> But I found that there is a mismatch between the calculated value from
> LTSPICE in Max. Impedance@100MHz from the vendor specified. Please
> suggest the method to calculate.
>
>
> Thanks
>
> Jack
>
> ------------------------------------------------------------------------
> *From:* steve weir <weirsi@xxxxxxxxxx>
> *To:* si-list@xxxxxxxxxxxxx
> *Sent:* Tuesday, May 28, 2013 1:04 PM
> *Subject:* [SI-LIST] Re: Ferrite Bead Parasitic Capacitance calculation
>
> Jack, you can extract the effective parallel capacitance either from S
> parameters or an R, X, Z plot.
>
> Steve.
> On 5/28/2013 12:15 AM, Jack Si wrote:
> > Hi Experts,
> > I am using a filter with a ferrite bead ML1206K601R-10 from Laird
> Tech. To simulate a filter in LT-SPICE, i need to provide the
> parameters like Inductance, Series Resistance, Parallel Resistance and
> Parallel Capacitance. I was able to obtain only series Resistance
> directly from the data sheet. To obtain other parameter, i referred
> "PDN Application of Ferrite beads by Steve Weir(Single Branch Ferrite
> Bead Model)". But i was not able to obtain the value for Parallel
> capacitance. please suggest me how to find the parallel capacitance.
> >
> > Thanks
> >
> > Jack
> >
> >
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>
> --
> Steve Weir
> IPBLOX, LLC
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--
Steve Weir
IPBLOX, LLC
1580 Grand Point Way
MS 34689
Reno, NV 89523-9998
www.ipblox.com
(775) 299-4236 Business
(866) 675-4630 Toll-free
(707) 780-1951 Fax
All contents Copyright (c)2013 IPBLOX, LLC. All Rights Reserved.
This e-mail may contain confidential material.
If you are not the intended recipient, please destroy all records
and notify the sender.
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