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BQ27220: What is the difference between BQ27220 and BQ27320?

K.Yaita
Guru 29690 points
Part Number: BQ27220
Other Parts Discussed in Thread: BQ27320, , BQ27520-G4

Hi Team,

What is the main difference between BQ27220 and BQ27320?
These are both CEDV but I want to know how to decide which device to be selected.

Best Regards,
Yaita

  • +1
    TI__Mastermind 23091 points

    Hello,

    Both gauges are very similar. The BQ27220 has a greater Battery Capacity and it comes with pre-programmed chemistry profiles.

    I have seen more customer use the BQ27220 due to its ultra power consumption in Normal mode and sleep mode. And this one has more documentation.

    Regards,
    Jose Couso

  • 0 in reply to Jose Couso
    Guru 29690 points

    Hi Jose-san,

    Thank you for your answer.
    My customer considers to use BQ27220 or BQ27320 as a system-side gauge where the actual battery can be removed.
    I believe he need to store learned gauge parameters like FCC and Qmax, etc in their system non-volatile memory before battery is removed.
    On the other hand, BQ27520-G4 (Impedance Track Flash gauge) doesn't require the non-volatile memory.
    Is my understanding correct?

    Best Regards,
    Yaita

  • +1 in reply to K.Yaita
    TI__Mastermind 23091 points

    Hello Yaita,

    Correct, the BQ27520-G4 is a flash gauge. And so, it does not require to store parameters in host side in case of a removal of the battery. Cell information is stored in the device in non-volatile flash memory

    Regards,
    Jose Couso