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bq24765 SMBus charger - how to detect charge termination ?

Shlomi Yehezkia
Mastermind 6150 points
Other Parts Discussed in Thread: BQ24765

Hi,

In oppose to the Linear charger that charger does not indicate when the charging is completed nor if it is trerminated.

Please suggest a simple method/ solution to add in order to have a signal that indicates when the charger is working. 

Thanks

Shlomi

 

  • 0
    TI__Guru 56650 points

    bq24765 is a SMbus charger. A host controller may also read out a battery status info for gas gauge IC through the SMbus.

    One suggestion is: when the host controller read out the battery status (pre-charge condition, fast charge condition or fully charged condition...), it can control bq24765 on or off. So, it will know when the charger is working.

  • 0
    TI__Intellectual 2295 points

    pg28 of d/s

    CHARGE TERMINATION FOR LI-ION OR LI-POLYMER
    The primary termination method for Li-Ion and Li-Polymer is minimum current. Secondary temperature termination (see Charge Current Regulation section) also provides additional safety. The host controls the charge initiation and the termination. A battery pack gas gauge assists the hosts on setting the voltages and determining when to terminate based on the battery pack state of charge.