Tool/software:
Hi,
I intend to use the BQ25798 in a 12VDC backup system.
I need to use the backup capabilities of this IC.
I will enter the power on VAC1 and I will supply the system on the PMID.
So, on that scenario, two questions:
(1) Is it possible to avoid using the back-to-back input mosfets? My power supply support applied voltage when off. For example if I leave de ACDRV1 floating... or connected... but not shorted. The IC will enter on backup mode?
(2)On the other hand, Without using the ship mosfet... It is possible to power the system from battery... then shutdown the system... and later re-start when power is applied again? If yes, what will be the total Iq current drained from battery during off without ship mosfet? (it is for storage purposes, system can be absolutely off until power will be connected again).
Thanks in advance for your answers...
REGARDS.