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BQ76200: Rpchg Calculation

Part Number: BQ76200

Good afternoon,

I searched on the datasheet but I didn't find anything, do you have any document on how to calculate the Resistor value for RPCHG ?

Best regards

John Smith

  • Hello John,

    We do not have a document that explains how this is calculated. It would depend on the charger and charging current. You generally would choose this to limit the current to a level that is allowable/acceptable for the battery when it is at low voltages. 

    Some of our chargers implement a pre-charging function that limits their current automatically if it detects the battery is at too low of a voltage. So this FET would not be required if the charger supports pre-charging.

    Best Regards,

    Luis Hernandez Salomon

  • Yes you're right, I was focused on the BMS part so I forgot it.

    Thanks

    John