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BQ25792: IINDPM_RANGE, IINDPM_ACC and ILIM_HIZ usage

Vincenzo Pizzolante
Mastermind 25456 points
Part Number: BQ25792

hi,

we are working on a 2S charger based on BQ25792.

VIN is 12V and max charging current of 5A, load current 1.5A, input current roughly 3A.

I would need some clarification on usage of IINDPM_RANGE and IINDPM_ACC.

Should be setup ILIM_HIZ? Or these all input limiting are only for OTG?

thansk a lot in advance

KR

Vincenzo

 

  • 0
    TI__Guru**** 166916 points

    Hi Vincenzo,

    IINDPM and ILIM_HIZ are for forward (charge) mode not reverse (OTG) mode.  ILIM clamps input current limit regardless of the value in the IINDPM register, unless the EN_ILIM bit is set to 0.  IINDPM_RANGE allows the input current up to 3.3A and IINDPM_ACC shows the accuracy at different IINDPM levels as set by the register.  

    Regards,
    Jeff