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BQ34Z100-R2: Clarification about combination BQ34Z100-R2 & BQ77915 together

Po Yang Khor
Prodigy 110 points
Part Number: BQ34Z100-R2
Other Parts Discussed in Thread: BQ77915

According to datasheet page 1 of BQ34Z100-R2,

I used BQ34Z100-R2 & BQ77915 together in my design. As both circuit has their own current sense resistor part circuitry. So my question is whether can I shared the same current sense resistor part circuitry?

Below is my Schematic illustration.

Thanks you very much :)

  • 0
    TI__Mastermind 27321 points

    Hello,

    You can use the same sense resistor for both devices. However, each device must have the RC filtering in the SRP and SRN pins. 

    Scenario 2 might work, but we have recommended customers to use separate filtering. See below for my description, I suggest to keep the red boxes.



    Regards,
    Jose Couso