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Original question:

TPS55288: Power management forum

TPS55288: AGND and PGND connection in Layout for best performance

first_name Sceglova
Prodigy 210 points
Part Number: TPS55288

In SLVAER0B document two types of AGND and PGND connection are mensioned. Why? And which method actually is prefered?

  • +1
    TI__Mastermind 34231 points

    Hi Sir,

    Both two types are verified.

    The right type (AGND plane is connected to PGND plane at VCC cap negative pad) is implemented on EVM.

    As we found some customers didn't notice that and also use short PGND trace for IC PGND pin and Cout connection, we recommended the left type as a easier layout.