FreeLists / si-list / [SI-LIST] PI Analysis about Core Power Supply

[Zhangkun <zhang_kun@xxxxxxxxxx>]

Dear All
In current work, I am studying core power supply. The voltage of core power is 
very low (0.9V-1.2V) and the power consuming is very high (dozens of Amperes). 
There is often power integrity problem in the frequency domain from 10MHz to 
20MHz. The solution is very easy that discrete caps should be added on the PCB.

My problem is that the PI problem is found out until the first edition has been 
produced. Then the decoupling caps is determined. I want to determine the 
decoupling caps before the first edition is produced in order to quicken the 
design flow. Therefore, I should know the current noise source. I have been 
looking for the paper about how to get the core power consuming in IEEE 
electrical library. However, I have not found any useful paper.

I hope I have express myself clear. Any advice is prefered.

Best Regards

Zhangkun
2005.5.8


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