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BQ40Z50-R1: Board offset

Part Number: BQ40Z50-R1

Tool/software:

Hello Sir:

We were using BQ40z50-R1 on our product.

And we had made around 2500pcs, but we had around 150pcs PCBA which current offset were around -30mA.

Our calibration processes we set the applied current of current calibration to 1000mA, then selected the calibrate current and clicked the CAL_TOGGLE command.

After above processes we found which current register showed around 970mA.

Would you please told us how to fix current offset issue of these 150pcs PCBA?

Looking forward your feedback.

Thanks a lot.

  • Hi Statham,

    Can you please confirm that 1000mA is being seen across the sense resistor attached to SRN and SRP?

    Also, if possible can you please share a .gg file of one of the correctly calibrated gauges and one of the incorrectly calibrated gauges?

    Regards,

    Anthony Baldino