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BQ25792: How to chose the inductor value

user5883945
Expert 1806 points
Part Number: BQ25792

Tool/software:

Dears,

   How to choose the inductor value, there have no detail description in datesheet.

  • 0
    TI__Guru**** 165886 points

    Hi,

    The charger is internally compensated to use a 1uH inductor if fsw=1.5MHz and 2.2uH inductor if fsw=750kHz.  The inductor's ISAT should be ~> 1.3*(ISYS+IBAT)max.  Lower DCR gives higher efficiency but larger footprint.

    Regards,

    Jeff