BQ25606: Multiple bq25606 in a Single Circuit

InProgress

Part Number: BQ25606

Hello,

I'm planning to use two bq25606s in a single circuit. The circuit consists of a DC/DC converter, which supplies power to these ICs, and two bq25606 based charger blocks.

Would I have any problem on this circuit if I connect these 3 circuits' GND together? Would their switching process of feedback loops affected by it?

Thank you in advance

over 7 years ago

0 Joel Hernandez II over 7 years ago

TI__Mastermind 25800 points

Hey InProgress,

There should be no issue connecting the GND of all three devices together.

For debugging on separate boards, you may want only one ground radiating to all other ground (central node) to avoid creating any ground loops.

For a PCB design, just make sure you have a solid GND plane connecting all together.

Regards,
Joel H

0 Hong Mao over 7 years ago

TI__Expert 5590 points

As long as the decoupling caps are sufficient, it should work

Power management

Power management forum

BQ25606: Multiple bq25606 in a Single Circuit