I just got the question from our customer.
As for your ADP2503, there are 2 GND, PGND and AGND.
So how should we connect these?
Can we connect 2 to 1?
The guideline for the switching power supply layout regarding GND is that using separate analog ground planes and power ground planes. Connect the ground reference of sensitive analog circuitry (FB, VIN, SYNC,EN) to AGND, and connect the ground reference of the power components, such as input and output capacitors to the PGND to avoid noise injecting other GND plane. Connect both ground planes to the exposed GND pad of the ADP2503. Please refer to the EVALUATION BOARD SCHEMATIC AND LAYOUT in the user guide:
>Can we connect 2 to 1?
Sorry I correct as following.
Can I gang 2 GNDs to 1 GND at 1 point?
OK,I will know this to our customer soon.
Thank you Kaos
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