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Power supply with multiple ground points

Question asked by Vlad-Mihai on Mar 20, 2016

Hi,

 

I've designed an SMPS with the ADP5050 IC and I want to know something: which way is better, to have each power rail with it's own ground connection (5 power rails and 5 ground connection) or all the power rails with one ground connection (5 power rails and one ground connection)?

 

PS: This SMPS is used to power up an KINTEX-7 FPGA and the FPGA board and SMPS board are 2 boards independently.

 

Thank you,

Vlad

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