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BQ34Z100-G1: How to control the output of the VEN pin?

Andrew Su
Intellectual 1635 points
Part Number: BQ34Z100-G1
Other Parts Discussed in Thread: BQ34Z100

BQ34Z100 has a pin called VEN, the definition is as below： 

Active High Voltage Translation Enable. This signal is optionally used to switch the input voltage divider on/off to reduce the power consumption (typ 45 μA) of the divider network.

But i could not find the method how to control the output logic in all the documents, would you please help to share me the details?

In addition, there are 2 functions referred in the datasheet: voltage measurement consistency check”/“fast convergence”,  how do they works?

thanks!

  • 0
    TI__Genius 12215 points

    Andrew

        The VEN is controlled by bq34z100, when it needs to read the stack voltage, this pin goes high to turn on the FET at the bottom of voltage resistor path to read the divided stack voltage

        Voltage Measurement Consistency Check is enabled by setting VconsEn bit, with this bit enabled, when the gauge is doing simulation and the simulation approaches to the end of discharge, the error caused by impedance calculation error under low temperature can be corrected by linear continuation.

        Fast convergence is to enable to run the simulation more frequently instead of only at resistance grid point