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Regarding Vias located at input and output capacitor's GND shape...

malli arjun1
Intellectual 610 points


Hi,

I am seeing in recommended layout of TPS54620EVM.

They have vias in row at the Cin and Cout Cap's GND terminals like this.

we also added vias, but they are not in order like this, random..

is this vias are to be in order?

or they can be any order....

  • 0
    TI__Guru**** 191445 points

    The vias are intended to couple the ground at the input and output filter capacitors to the underlying ground plane.  The arrangement is not critical as long as they are close to the ground side of the capacitors.  In general an orderly layout tends to reduce unforeseen problems though.