Hi all, I am trying to measure the effect of power gating on the substrate noise. In other words, I want to measure the amount of ground bounce through SPICE simulation. Initially, I am planning to use lumped RLC model (attached picture) to mimic the ground network. Now I have two questions: 1) Is that the correct approach to measure the ground bounce? If not what are the methods/metrics I should use? 2) I also want to measure the impedance of the power distribution network using this lumped RLC model for different switching activity of load circuits. I am not quite sure how to achieve this. For example: how can I get impedance vs frequency characteristics using the lumped RLC model I am using? Please let me know if you have any question. Thank you for your time and help.![]()
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