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TPS2115A - Can I bias the GND pin of the TPS2115A to -2V in order to mux a 0.9V supply?

Leslie Chataway
Mastermind 20980 points
Other Parts Discussed in Thread: TPS2115A

Question/Problem:

Can I bias the GND pin of the TPS2115A to -2V in order to mux a 0.9V supply?

Answer:

Yes.  Be aware that all inputs must be referenced to the -2V bias and if no load is applied to the output during shutdown, an internal high impedance path pulls the output to the -2V bias level.  I built and tested this circuit in the lab.

 

 

  • 0
    TI__Mastermind 42795 points

    Answer:

    Yes.  Be aware that all inputs must be referenced to the -2V bias and if no load is applied to the output during shutdown, an internal high impedance path pulls the output to the -2V bias level.  I built and tested this circuit in the lab.