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TPS548A20: AGnd and PGND

Patrick Chen
Mastermind 8875 points
Part Number: TPS548A20

Hello,

                  On TPS548A20 datasheet, Pin 22 connect to thermal pad then thermal pad connect to PGND. But on EVM schematics, the Pin 22 connect to AGND. What is correct for them? How to connect to pin 22 GND, Pin 27 GND1, Pin 28 GND2 by AGND and PGND? Thank you. 

BR

Patrick