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bq24193 battery charger "Not charging"

VISHWANATH RAJU
Prodigy 100 points
Other Parts Discussed in Thread: BQ24190, BQ24193

Hi,

I am facing issue with bq24193 battery charger integrated with imx6s, the driver i am using is bq24190.

When i am charging the battery is shows status "Not charging".

In bq24190_battery_get_status i am reading the ss_reg its value is 0.

What may be the problem, how can i solve this.

  • 0
    TI__Expert 3160 points

    Hi, 

    I don't think this is a TI supplied driver, but I can certainly help you with the 19x operation.

    Can you describe your system set-up in more detail:

    • What is your VBUS voltage and what is your battery voltage? 
    • Do you have a schematic you can share?
    • Does this behavior occur after full power restart (from no battery and no VBUS) or only after your communicate with the part? 
    • Can you read out the full System Status register (0x08) and Fault register (0x09)?

    Thanks!

    Rachel

  • 0 in reply to Rachel Moore
    Prodigy 100 points

    Hi,

    Here, i attached the schematic of battery charger for your reference.

    And, i tried to read the System Status register (0x08) and Fault register (0x09) both are '0'.

  • 0 in reply to VISHWANATH RAJU
    TI__Expert 3160 points

    Vishwa,

    If your System Status Register is really reading '0' then the IC doesn't recognize a good input source.   Please measure on your board VBUS and VBAT voltages.  

    Can you read other registers? If you are only getting all '0' for the registers we need to separate the software driver problems from the IC operation to isolate the cause of not charging. 

    Do you have a way to communicate with the bq24193 using the TI supplied software and the USB-to-GPIO box? (The normal way to communicate with our EVMs)

    Thanks!

    Rachel