FreeLists / si-list / [SI-LIST] Questions about Power Distribution

["Stefano Riccardi" <stefano.riccardi@xxxxxxxxx>]

HI all,
I have some questions regarding  frequency domain analysis of PDS:

ESR of a cap is frequency dependent: if I want to simulate the frequency 
response of a PDS in Spice, what value of ESR must I consider? (I think the 
value corresponding to Self Resonant Frequency of the cap...) Is it right?

The impedance of the PDS must be maintained below Ztarget  over a wide band. 
(from DC to a given frequency)
How is this frequency calculated if we are supplying a core? and If we are 
supplying The bus power pins?

Suppose a 1 Ghz core with a 100 Mhz bus...
What rise time I have to use to calculate Fknee?

What is the common modelling scheme for VRM?
Are there some spice models online from productors?


Thanks a lot in advance!!!
Stefano

































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