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NEW VERSION OF BQ24030?

Carlos_Gonzalez_de_Juan
Prodigy 100 points
Other Parts Discussed in Thread: BQ24030, BQ2040

Hi everyone,

We are currently developing a project in which we would love to use BQ24030 due tu its features as SAI, automatically selectable AC / USB power inputs, AC power input range up to 18V, etc.

The fact is, we do need some more features the BQ2040 does not have, as the following ones:

- When sourcing power from battery, desirable Vout=5V, rather than Vbat (it is needed an internat boost).

- Iout = 3A (or more), regardless of sourcing from AC / USB / BAT rather than 1,5 when sourcing from BAT.

The question is: Is there a newer version of this IC that would perform the old features and the new ones we need?

Thank you in advance!

  • 0
    TI__Mastermind 19430 points

    The bq24030 can support up to 4A of output current when the input source can provide this current. With that said, if you have a USB source and its maximum current rating is 500mA, then it will rely on the battery to supplement the remaining 2.5A if the battery discharge current rating is higher or equal to 2.5A.

    With this said, the output it self is rated for 4A, so it has to rely on source or battery's capability to provide the current.

    Unfortunately we do not have a version of the device can support 5V output at this moment.

  • 0 in reply to Jing Zou
    Prodigy 100 points
    Thank you very much, I think we can deal with the project with this IC.
  • 0 in reply to Jing Zou
    TI__Intellectual 2970 points
    Would the BQ24030 be able to support a system (Backup battery for an Electric Vehicle) that draws 3A and be able to charge at 1A. What are your reservations about running this part to the maximum 4A output ?

    Assuming system and battery both are 4.2V with 4A total, to be able to use this part with the nominal 2A input current, how high would the input voltage need to be in order to achieve this?

    Thanks,
    Joe
    SF/Bay Area AFA
  • 0 in reply to Joe Howard
    TI__Mastermind 19430 points
    The recommended input current is 2A. Thus when 3A load is active and the battery is attached, the IC will be in battery supplement mode where the system load has the highest priority. With that said, system will get 3A which 2A from the input and 1A from the battery. Therefore, if the 3A load is on all time, then the battery might not get charged.

    When running at abs maximum rating, any current spike higher than that will most likely damage the IC.

    Efficiency = PowerIN/PowerOUT. Assuming 100% efficiency, then VIN = PowerOUT/IIN. Please keep in mind that the bq24030 is a linear charger where the higher drop from VIN to VOUT will effect the efficiency.