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BQ25570: BQ25570 Schematic review and design tips for super low power system

Gary Guo
Prodigy 240 points
Part Number: BQ25570

Hello charger folks,

      My customer is designing a solar related products, they have finished the BQ25570 schematic. please help to review the schematic then give your valuable comments. Thanks!

  • 0
    TI__Guru**** 166996 points
    Hi Gary,

    On the schematic, L7 needs to be the recommended 22uH. We have not fully tested the IC's boost charger with 10uH. Also, we require bypass capacitor = 0.01uF from VSTOR to GND for noise filtering. I suggest checking your resistor values using www.ti.com/.../sluc484. Lastly, please read datasheet section 10, especially as related to solder flux creating parasitic resistors that change the value of your high value resistors.

    Regards,
    Jeff