Upto what frequency decoupling analysis (PDN) analysis should be performed?

Thread Starter

Rahul Ruwali

Joined May 11, 2017
1
I have a doubt regarding Power Integrity (Decoupling analysis) What is the concept behind maximum decoupling strategy frequency, Up to what frequency it should be analysed. Somewhere it is given as 80 MHz from where did it came.
As target impedance is given as (VDD*%ripple)/Idd*0.5 is this formula constant over all frequency range?
Please help me on this.
 
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