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BQ76952: CHG FET and DSG FET don't turn ON

Evgenii Shein
Prodigy 60 points
Part Number: BQ76952

Hello! Must CHG FET and DSG FET turn on in autonomous mode? In our case Battery Voltage - 19.7 V, voltage on DSG FET gate - 8.5 V. 

  • 0
    TI__Guru* 81034 points

    Hi Evgenii,

    The FETs are disabled by default when the device is powered on. They can be enabled by sending the FET_ENABLE() command. Or you can write the FET_EN bit in the Mfg Status Init register. If this bit is programmed in OTP, the FETs will be enabled by default at power up.

    Best regards,

    Matt