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BQ35100: EOS

YASHAY
Prodigy 30 points
Part Number: BQ35100


Tool/software:

Hi,

in our application we are using lithium thionyl chloride 38Ah. (two cells in parallel). my questions are 

1)  during the normal operation/measurement, what happens if  VREGIN, goes to zero, does the chip lose all battery measured data, calibration  etc? 

2)

 

i see that the maximum voltage difference between SRP and SRN should be 125mV, does it related to load pulse voltage drop ?

 in our application pulse load voltage drop could be 500mV (e.g 3.5V to 3.0) for 200ms, so in this case we will exceed the limit of 125mV between SRP and SRN ?

3) does BQ35100 is valid for the application where the voltage drop is variable (100mV to 500mV) everytime during the day ?

Thanks.

Afzal  

  • 0
    TI__Mastermind 31680 points

    Hello Yashay

    YASHAY said:

    1)  during the normal operation/measurement, what happens if  VREGIN, goes to zero, does the chip lose all battery measured data, calibration  etc? 

    -This gauge is a "flash" gauge meaning that it does not lose battery measured data, calibration, chemID and etc when voltage drops to zero

    YASHAY said:

     in our application pulse load voltage drop could be 500mV (e.g 3.5V to 3.0) for 200ms, so in this case we will exceed the limit of 125mV between SRP and SRN ?

    -This is the acceptable voltage drop range for the across the Sense resistor, you would have to see if the sense resistor value choose would cause this much of a voltage drop for your expect current/load values.

    YASHAY said:

    3) does BQ35100 is valid for the application where the voltage drop is variable (100mV to 500mV) everytime during the day ?

    -Yes it should be a valid application for this gauge.

    Thank you,
    Alan