• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 62 subscribers
  • Views 738 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

BQ24295: Charger +Fuel Gauge IC recommendation

Jackson hu
Prodigy 140 points
Part Number: BQ24295
Other Parts Discussed in Thread: BQ27532-G1, BQ25895

Hi,

I have a design with the Li-ion battery

Vin=5V to charge, Li-ion battery=1cell, 800mAh or 4000mAh@4.2V, include boost function(5V), system total consumption = 5V@100mA ~ 1000mA, I2C interface

Currently, we use the BQ24295+BQ27532, but there is an issue that BQ27532(I2C)<=>BQ24295(I2C) can not communicate to each other via I2C interface(item 1). We need to modify the circuit to item 2 to solve this issue.

(1) MCU(I2C)<=>BQ27532(I2C)<=>BQ24295(I2C)

(2) MCU(I2C)<=>BQ27532(I2C) & MCU(I2C<=>BQ24295(I2C)

Could you please suggest the better combination Charger +Fuel Gauge IC for above application ? Thank you very much.

Jackson

  • 0
    TI__Mastermind 25800 points
    Hey Jackson,

    The BQ24295 was not intended to be used with the BQ27532-G1 fuel gauge in regards to automatic charger control.

    If you have your own MCU, can fuel gauge can potentially work with any charger. From the charging side, you can look at any single cell charger with the current capability you are looking for (0.5C rates)? If you are looking for a separate boost path, the BQ24295 and the BQ25895 can both work in the traditional "power bank" configuration.

    As far as the gauge, any single cell gauge can also work, it just depends on whether you need accuracy over simplicity (Impedance Track vs. CEDV type gauging).


    Regards,
    Joel H