[SI-LIST] Re: PI resonance test
- From: Rajkumar NAGPAL <rajkumar.nagpal@xxxxxx>
- To: "ravsinful ." <potluri.ravikumar@xxxxxxxxx>
- Date: Tue, 14 Jan 2014 21:37:41 +0800
Yes Ravi,
I think you are asking how to estimate power ripple at CAD stage.
Do following.
1. Extract board PDN S-parameter model with Ports defined wherever you
have possible Decap's, Bulk Cap, Regulator.
2. Take this S-parameter file to any transient simulator. At the defined
ports, connect the relevant models of Decaps, Bulk Cap and regulator.
3. Do transient simulation for Power line ripple.
4. Take FFT to understand frequency response.
Best regards,
Raj Kumar Nagpal.
From: ravsinful . [mailto:potluri.ravikumar@xxxxxxxxx]
Sent: Tuesday, January 14, 2014 6:22 PM
To: Rajkumar NAGPAL
Cc: star_wang1@xxxxxxxxxxx; si-list@xxxxxxxxxxxxx
Subject: Re: [SI-LIST] Re: PI resonance test
In addition to Wang's question.. How to perform a transient simulation (may be
using hspice) of extracted S-Parameter model of a Power Plane to ensure that
the power supply injected noise is with in acceptable limits?. May be with this
simulation method (just using software tool) we will able to guess if the
extracted model of power plane is correct. Could some one please put a thought
on this issue too.
Regards,
Ravi
On Tue, Jan 14, 2014 at 1:42 PM, Rajkumar NAGPAL
<rajkumar.nagpal@xxxxxx<mailto:rajkumar.nagpal@xxxxxx>> wrote:
Hi Wang,
Measure the Z11 profile using RLC meter or Network analyzer.
Best regards,
Raj Kumar Nagpal.
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Sent: Tuesday, January 14, 2014 6:08 PM
To: si-list@xxxxxxxxxxxxx<mailto:si-list@xxxxxxxxxxxxx>
Subject: [SI-LIST] PI resonance test
Dear all
I have a problem about how to test power plane resonance.
I did a simulation of a 1.0v power plane(12v turn 1.0v) and the resonance is
high at 600mhz,how can I verify my simulation through test?
Thanks
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