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New ContributorPDN file and PCB decoupling
Hello,
In the PDN excel file how is determined the ESR and ESL value for the decoupling capacitor ?
I would like to add bigger capacitor .
Is there some explanation for this file ? all the cells are locked.
Is there some explanation to help to determine the number of capacitor needed for an application.
I put the power rail voltage and current and now I need to determine the capacitor decoupling for each rail.
I'm using a 5CEFA4_M13 chip on my board.
Thanks for your help
1 Reply
Farabi_AlteraRegular Contributor
Hello,
ESR and ESL is mention on each capacitor manufacturer datasheet. PDN dont mention that.
You only put the capacitor ESR and ESL and PDN will calculate for you.
All you need to monitor is the Zeff must be below the Ztarget all the way to feff.
link : https://www.altera.com/design/resource/power/pdn-network
regards,
Farabi
