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BQ24618: Standalone solution suggestion

Hardy Xue
Expert 3640 points
Part Number: BQ24618
Other Parts Discussed in Thread: BQ24617, BQ24616, BQ24610, BQ24600

Hi Team,

My customer survey standalone charger solution. I think BQ24618 is okay to them but I would like to know whether we have better solution for supply concern(better P2P with other solutions) and easy to use.

The customer's spec as below. Could you please give me some suggestions? Thanks.

Battery: 1 cell - 2 cell

Input Voltage: 5V - 20V

Input current: about 3A

Charge current: about 6A

Charging voltage/current setting by HW

Best regards,

Hardy  

  • 0
    TI__Mastermind 40635 points

    Dear Hardy,

    For a standalone charger with an input voltage range of 5V to 20 V, 3 A input current limit, 6 A charge current, and 1-2s battery the best recommendations are the BQ24600, BQ24610, BQ24616, BQ24617, or the BQ24618. Please see the device comparison table in the BQ24616 datasheet for the differences. Let me know if you need any more help!

    Thanks,

    Mike Emanuel

    Please click "Resolved" if this answered your question.

  • 0 in reply to Michael Emanuel35
    TI__Expert 3640 points

    Hi Mike,

    Thanks for your suggestion.

    I will recommend customer to use BQ24610/BQ24616/BQ24618.
    More one question, could these 3 parts replace each others without BOM change? This purpose is that customer can change another TI solution when one of them has supply challenge.

    Best regards,

    Hardy

  • 0 in reply to Hardy Xue
    TI__Mastermind 40635 points

    Dear Hardy,

    As shown in the table, they have the same cell count, charge voltage, input overvoltage, maximum battery charge current, switching frequency, and IINDPM.

    They can be interchanged, just please keep in mind the follow differences:

    1. The differences in input voltage range: 5 V to 28 V for BQ24610 and BQ24616 while 4.7 V to 28 V for BQ24618.

    2. The BQ24616 has a JEITA Charging Profile while the others do not. This means that instead of a simple window with full charge and voltage throughout the temperature window in the BQ24610 and BQ24618, the BQ24616 can reduce charge current and charge voltage depending on the temperature. Please make sure you account for these differences as this could prevent full charge or slow down the time it takes for full charge. I have attached the differences in the temperature schemes below:

    BQ24610:

    BQ24616:

    Thanks,

    Mike Emanuel

    Please click "Resolved" if this answered your question.