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BQ27742-G1 'Imax Intzerrupt'

Al
Prodigy 740 points
Other Parts Discussed in Thread: BQ27742-G1

Hello Team,

could you provide me with an parametric file which my customer can download to the BQ27742-G1 EVM and test the Imax Interrupt feature?!

So far, they had no success in achieving to issue and interrupt (based on the Imax limit), and they think that they still not have some settings correct in place.

Do they have to apply an battery pack to evaluate this Imax Interrupt feature (or electrical load), or what is the physical test scenario for it.

An further request is, to explain the function of the RA0 pin/function on the device and the usage of the I/O controller in general!

Thanks

Albert

  • 0
    TI__Guru* 76230 points
    Hi Albert,
    I believe we have taken this conversation ofline. As a quick response for others benefit on the forum, you can test using a power supply simulating a battery. Connect the supply first at 4.2 V. You can issue a reset command to ensure the gauge shows an SOC that corresponds to that voltage. Also make sure your imaxen bit is set pack configuration D register. make sure the RC2 pin is configured to trigger for Imax.(see TRM for that setting). Now reduce the power supply voltage to a smaller voltage value, say 3.3 V and issue a reset command so SOC is updated to a corresponding value .That would also cause imax calculated to change by more that the max current interrupt step which you have programmed in data flash and the RC2 pin should trigger either active high or low depending on what you set it to. I hope this helps.

    thanks
    Onyx