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BQ25606: BQ25606 + driver

Part Number: BQ25606

Hi,

The new project of my company will use your company's BQ25606 as a charging chip. The corresponding informations are in below:

1.Platform: linux system

2.kernel version: Linux kernel v4.4

Now my quesion is whether your company can provide a drivers of BQ25606, and whether it can help bringup the chip?

thanks.

  • Hello,

    The bq25606 is a standalone charger, meaning there is no communication. All charging parameters are either at a preset level or defined by resistor-based pins, such as ILIM, ICHG, and VSET. 

    I would not expect a driver needed unless your processor will be biasing some of the pins (like /CE and OTG) externally. 

    Please confirm.


    Regards,

    Joel H

  • Thanks for your reply.
    1)Whether BQ25606 support fuel gauge or not?
    2)How can I get the battery power?
    3)If I can get the battery power by reading ADC results, power conversion from voltage to battery power is accurate?
    If not accurate, How can I use the software algorithm to fix it?
  • Hello again,

    1) The bq25606 is does not have an integrated fuel gauge. However, you can use any fuel gauge in conjunction with the charger to measure battery cell current, voltage, and state of charge, etc.Is this what you are looking for?

    2) When you battery power, I am assuming you are talking about remaining capacity. Is this correct? Or are you talking about the power supplies to and from the battery at any given moment? There are several ways to implement either option, so let me know and we can go from there.

    3) Are you planning on taking measurements of the battery voltage and then use that to calculate the remaining capacity in the cell? If so, this will not be as accurate as the algorithms our gauges use, including Impedance Track and CEDV method. I do not believe there is an easy software algorithm to give you remaining power available in the battery using only battery voltage. And an algorithm for the best way to measure remaining capacity is a debatable subject. Like I said, TI has two of it's own algorithms, CEDV and IT (Impedance Track) to do this sort of thing. You will want to approach the Gauging team to get a better solution for the measurement side. 

    Regards,

    Joel H