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BQ24196: BQ24196 setting

xiong qinghua
Prodigy 10 points
Part Number: BQ24196


bq2419x_write_byte(BQ2419X_REG_CTTC, 0x9A); //reg=0x05,

bq2419x_write_byte(BQ2419X_REG_MOC, 0x4B); //reg=0x07,

bq2419x_write_byte(BQ2419X_REG_CVC, 0xE2); //reg=0x04,

bq2419x_write_byte(BQ2419X_REG_CCC, 0x7C); //reg=0x02,0xA0

bq2419x_write_byte(BQ2419X_REG_PCTCC, 0x11); //reg=0x03,0x21

bq2419x_write_byte(BQ2419X_REG_ISC, 0x7F);//reg=0x00,

  • 0
    TI__Mastermind 28265 points

    Hello, 

    Thank you for reaching out via E2E. Please help to state your question so we can best support. 

    Best Regards,

    Garrett 

  • 0 in reply to Garrett Kreger
    Prodigy 10 points

    I have a 12600mAh lithium battery with the following parameters

    1>Maximum charging current 6.3A, voltage 4.2V

    2>Continuous discharge current of 3.5A, instantaneous 6A, cut-off voltage of 3.0V

    I charge this battery through the USB TYPE C interface

    How can I set BQ24196 in charging state and BQ24196 in discharging state

  • 0
    Prodigy 10 points

    //Input Voltage Limit=5.08V,Input Current Limit=3A
    bq2419x_write_byte(BQ2419X_REG_ISC, 0x7F);//reg=0x00, default=0x37

    //Minimum System Voltage Limit=3.0V
    bq2419x_write_byte(BQ2419X_REG_POC, 0x11); //reg=0x01,default=0x1b

    //Fast Charge Current Limit=2.496A
    bq2419x_write_byte(BQ2419X_REG_CCC, 0x7C); //reg=0x02, default=0x60

    //Pre-Charge Current Limit=256mA,Termination Current Limit=256mA
    bq2419x_write_byte(BQ2419X_REG_PCTCC, 0x11); //reg=0x03, default=0x11

    //Charge Voltage Limit=4.208V
    bq2419x_write_byte(BQ2419X_REG_CVC, 0xB2); //reg=0x04, default=0xb2

    //Fast Charge Timer Setting=8 hours
    bq2419x_write_byte(BQ2419X_REG_CTTC, 0x9A); //reg=0x05, default=0x9a

    //Thermal Regulation Threshold=60 degree
    bq2419x_write_byte(BQ2419X_REG_ICTRC, 0x00); //reg=0x06, default=0x03

    //BATFET_Disable=Allow Q4 turn on
    bq2419x_write_byte(BQ2419X_REG_MOC, 0x4B); //reg=0x07, default=0x4b

    //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

    the  above setting for BQ24196 cannot work!!! why?

  • 0 in reply to xiong qinghua
    TI__Guru 55181 points

    Hi,

    We are checking and will get back to you. 

    Thanks,

    Ning.

  • 0 in reply to Ning T
    TI__Mastermind 28265 points

    Hello, 

    xiong qinghua said:
    How can I set BQ24196 in charging state and BQ24196 in discharging state

    Battery charging is enabled when REG01 bits [5:4] = 01 and /CE pin is driven low. The register setting you provided for REG01 is correct to enable charge. Then when input adapter (in your case USB type C) is removed the device automatically switches to discharge state to allow battery to power SYS. 

    xiong qinghua said:
    the  above setting for BQ24196 cannot work!!! why?

    Please help to elaborate on what specifically does not work? I have reviewed your register settings and I see nothing specifically that is the problem. One note to set system minimum voltage to 3V please set REG01 to 0x11. With your current setting of 0x1b SYSMIN setting is 3.5V. 

    Best Regards,

    Garrett