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Original question:

BQ40Z80: Are there any reference designs?

BQ40Z80: High current/power

KIM
Intellectual 550 points
Part Number: BQ40Z80

Hi, 

is there any limitation to use BQ40z80 for high current/power application referring to the earlier post?

if yes, can i know the value?

thanks!

  • 0
    TI__Mastermind 42060 points

    Hello Kim,

    This would be dependent by the sense resistor. You will not want to exceed the coulomb counter range (-100-mV to 100-mV). We typically recommend a sense resistor between 1-mΩ to 3-mΩ range. So with a 1-mΩ sense resistor, you could handle up-to (100-mV)/(1-mΩ) = 100-A currents accurately.

    If you require higher current applications, you could lower the sense resistor, but the accuracy of the gauge would be impacted.

    Best Regards,

    Luis Hernandez Salomon