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How to make Calibrated / averaged golden image with bqStudio

KANJI SHIBATANI
Mastermind 6205 points
Other Parts Discussed in Thread: BQSTUDIO, BQEVSW, BQ27520-G4

Hello

My customer intend to going to production with bq27520-g4 with bqStudio ( not bqEVSW) soon.

It is first time to use bqStudio for them.

 

They have gg .csv and golden files (.srec, .bqfs, dffs )  already  by bqStudio .

Those are kindly made by local FAE.

 

Now they want to make golden files ( df.fs file ) for  average of 20 samples ( 20 PCBs of their product)

 

I had read slua449f.pdf ( Going production with bq275xx ) , but I could not understand for bqStudio case.

Would you please kindly let me know?

 

Question1

My understanding is, if they had a gg .csv file and golden files already, they do not need to have

discharge/charge cycle test.

Is it correct?

 

Question2

 

If Q1 were yes, would you please let me know the  proper  proedure for how to make  golden image files  which were

calibrated  /20pcs averaged with bqStudio?

 

I had attached the file  for  explanation about  steps( I am not confident with this ...I don't know it is correct or no ).

After the step3 of  attached, I don't know the way to make golden image files.

 

 

 

Question 3

 

Do you have a application report like as slua449F.pdf " Going Production with bq275xx "  for bqStudio ?

Not bq275xx but for another products should be OK.

 

With My Best Regards

 

 

 

 

 

 

 

 

 

  • 0
    TI__Guru* 76230 points
    Hi Kanji:
    Question 1:
    If a learning cycle was done prior to extracting the golden file, then you do not need to do any charge or discharge cycles or tests. The learning cycle is necessary to learn the qmax and resistance table
    question 2:
    if you do not want to calibrate each board individually, that is when you need to calibrate 20 boards and take the average of the calibrated values.
    You simply need to average the calibration parameters in the calibration section of the gg file, input the averaged values in your golden gg file and that will now be your new golden file. Program the gg file on a device and then extract the flashstream file (bqfs or dffs). This file will have calibrated values and will be your new golden flash stream file.

    question 3:
    No we do not. The slua449f is applicable to bqstudio as well. It just that the file formats are different
    thanks
    Onyx
  • 0 in reply to Onyx Ahiakwo
    Mastermind 6205 points

    Dear Onix san

    Thank you for your answer !

    I will try it with customer.

    Thank you and with bst regards