My customer is considering TPS650250 and has a question about how to connect AGND and PGND.
I would be grateful if you could advise.
On our circuit diagram, A-GND and P-GND of TPS65025 are separated on our board.
How should AGND and PGND be connected on the board?
1. Connect A-GND and P-GND without separate. (It doesn't seem to be divided on the evaluation board layout)
2. Divide into A-GND and P-GND groups and connect at one point.
3. Insert a bead inductor between the A-GND and P-GND groups.
Currently, our board is in the state of 3.
In this case, It seems that ripples are added to the output voltage depending on the ferrite beads used.
I appreciate your great help in advance.