hello everybody,
i want to realize a bms with an bq76940 and bq78350 for a battery powered device. i also want to use an µC witch should be connected with the bq78350 via sm-bus to use some data from the two bq-ICs and witch is power by regout of bq76940. i want to power the bq78350 with the regout of the bq76940 as well. i only have one magnetic switch on my device for power on and off the described system. if my device is not in use the system has to be in ship-mode(bq76940) and in sleep-mode(bq78350) to reduce power as much as possible.is it possible to switch on and off the system with only one switch? if yes what pins on the bq-ICs i have to connect with that switch? this is not really clear to me!
thanks a lot
armin