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TPS22996: Vbias vs. VIN

Thomas Bodemann
Prodigy 30 points
Part Number: TPS22996

Tool/software:

Under the recommended operating conditions in the datasheet it is stated that the Input voltage must be less then Vbias.

What are the consequences of having VIN > Vbias? I.e. Vbias=3.3V VIN=4V?

  • 0
    TI__Expert 5151 points

    Hello Thomas,

    Keeping VBIAS<VIN can result the device not to turn on since charge pump in this device is not strong.

    In your example it can turn on but RDSon will be high. 

    you won't get the optimal RDSon as mentioned in datasheet.

    You can connect VIN to VBIAS.

    Thanks 

    Amrit