Part Number:BQ25895
Tool/software: WEBENCH® Design Tools
My question is related with a complex design that includes in one PCB the bq25895 together with an LDO and two uC.
The idea is to use the bq25895 for charging a 1-cell LiPo battery. The Vsys output will be connected to an external 3V-fixed-LDO(TPS79730) to power one of the uC. The PMID output will be used to power another uC that works at 5V. The system should work stand-alone (without VBUS connected) while the battery is charged, and afterwards, charge it with VBUS when it's needed.
1- In the datasheet it's stated that PGND should be separed from AGND. In my design I have a PGND pour on top and bottom layers underneath the bq25895, the rest of the circuit (uC, sensors and LDO) has a GND pour. PGND and GND are connected only at one point using a VIA. Is this approach correct?.
Thanks for your help.