Dear support,
I'm working on a new project and has some questions on battery management, as folow:
1.How could i know when the charging has finished?
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The bq51050B sends a charge complete signal to the TX (See table 1 in the datasheet).
I would suggest a different interface between the bq51050B the battery and the TPS61253. As it is now, the bq51050B and battery can both be on the bus trying to supply the TPS61253.
Regards,
Dick
Jun,
The key to this is to make sure the load does not overpower the battery / charger system. Do you know the load for the system? In particular, during start-up. Sufficient capacitance at the bq51050B outpu, at the battery output and TPS61253 input will be required. That is specific to your load requirements. Additionally, an under-voltage lock-out of some sort might be of use. This would keep the load off until the battery is sufficiently charged to handle the system load.
Dick