Tools for viewing the analysis of Impedance vs Frequency performance of Power Rails

[FreshmanNewbie]

I noticed that there are a few online tools/plotters that are there for Power Delivery Network analysis. They show the impedance profile (Impedance vs Frequency graph) for the power rails after providing the capacitor value inputs and the stackup related information.

However, I noticed that some ECAD tools like Altium designer have the power delivery network analysis (PDN Analyzer). But they don't provide us with the plots of Impedance vs Frequency of the rail with the capacitor inputs and PCB stack-up information.

I searched but couldn't find a tool that can provide the impedance vs frequency plots. Any idea on what CAD tools that I could use to view these impedance profile plots?

 

[D.A.(Tony)Stewart]

Google Search

 

[FreshmanNewbie]

Google Search

Thank you. Any other tools from other vendors which I can consider for cost reasons?

 

[D.A.(Tony)Stewart]

Did you not like the free app?

 

[dick_freebird]

It's probably all still SPICE at the bottom of it all, the work and fog is in the netlist and the element models all the way down to substrate material, layer stack and trace geometry.

The layout tools with a built-in leg up on the components libraries and layout will be a time saver -if- somebody got all the data cued up for you. And probably have some howto material handy.

 

[D.A.(Tony)Stewart]

I guess you didn't like this one as you need to choose all the caps and insert specs and cost then it computes least cost to fit under the limits.

Capacitor Impedance Plot

Very thin pre-preg between pwr/gnd planes helps raise C /mm2 and reduce spurious resonances.

 

[FreshmanNewbie]

Did you not like the free app?

To get more accurate results for a project, we want to get a tool from an company. Any idea on who all offer such a PDN Analyser?

 

[dick_freebird]

There are some, ray ridley and steven sandler are names to check for power integrity