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Noobs's avatar
Noobs
Icon for New Contributor rankNew Contributor
4 months ago

PDN 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 a...
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Farabi_Altera's avatar
Farabi_Altera
Icon for Regular Contributor rankRegular Contributor
4 months ago

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