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Original question:

BQ24032A: bq2403x Single-Chip Charge and System Power-path Management IC (bqTINY™)

BQ24030: Li-ion Or LiPo powered circuit with ESP32-Wroom-32E

Hikmet Tekin
Prodigy 20 points
Part Number: BQ24030

Hi everybody,

I have a project which needs to power up from Li-ion or LiPo battery. I have never designed a pcb with battery and its management. 

All the things on PCB, uC or other IC(GNSS, current limiter etc.) supplied with 3.3VDC

It should work as like this,

- When there is power, it should charge battery and supply voltage to ESP32 and GNSS receiver.

-If battery is fully charged, It should cut-off battery charging. 

-If there is no power, It should supply power from battery. 

I need to use battery with 6000-8000mAh capacity, and hard to find high capacity battery. Is it possible to use 18650 - 2000(3000)mAh battery in parallel with BQ24030 as 1S3P or 1S4P?

I couldn't understand output voltage of OUT pin. Should I use Voltage regulator? 

Thanks

  • 0
    TI__Mastermind 23200 points

    Hi Hikmet,

    Welcome to E2E!

    You're on the right track for looking at a power path charger since you're looking to charge the battery when an adapter is present and power from the battery when not present. 

    For the BQ2403x, OUT is found in the Device Options table in section 7 on page 3. Now when you say "all things on the PCB... supplied with 3.3 V DC", are you saying you're powering the entire board with like an external power supply set to 3.3 V or would your adapter to the board be something like a USB (What's your input to the board in voltage and current?)?. 

    What charge current are you looking to charge your batteries at? These are some high capacity battery and so they may take a while to charge with a linear chargerlike the BQ2403X devices.

    Best Regards,

    Anthony Pham

  • 0 in reply to Anthony P Pham
    Prodigy 20 points

    Hi Anthony, for faster charge should I use switch mode?

    We have 2 different input, one input will be between range of 9-18VDC and another is USB port. 

    we can add voltage regulator before Charge IC for range of 9-18VDC. 

    If you suggest using switch mode, can you give me a part number?

  • 0 in reply to Hikmet Tekin
    TI__Mastermind 23200 points

    Hi Hikmet,

    You may look at the BQ2579X family. These can charge at higher rates and can handle higher voltage input. 

    Feel free to start a new thread if  you have any questions on any devices in that family.