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BQ78350-R1: Actions after boot

Part Number: BQ78350-R1
Other Parts Discussed in Thread: BQ76200, BQ76940, , BQSTUDIO

I have a system that has been build around the BQ78350-R1 and the BQ76940. I am using the high side switch driver BQ76200. My question is I want to be able to have both the charge and discharge fets turn on automatically (assuming no safeties have been tripped) when the device is booted, restarted etc. I believe I saw that this was possible in the tech reference but I am unable to find the setting again. Any help would be appreciated thank you.

Regards,

Nate

  • Hi Nate,
    Thank you for your interest in our products. A BMS expert has been assigned to your question.

    Regards,
    David
  • Hi Nate,
    You want to set the FET_EN bit in the ManufacturingStatus register, data flash Settings/Manufacturing/Mfg Status init. This is commonly set with the ManufacturerAccess ManufacuringStatus command, see the technical reference manual section 17.2.41. You can set the bit in data flash, send the ManufacturerAccess command or use the FET_EN Command button in bqStudio.
    Note that the SBS command 0x57 will read the value in certain sealed modes, see section 17.52