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Original question:

TPS543C20A: PSPICE Trans Simulations

TPS543C20A: VMODE/RAMP pin settings

Matthew Moranda
Prodigy 120 points
Part Number: TPS543C20A

Tool/software:

Hi Britton,

Is it okay to leave the MODE/RAMP pins open as No Connects?

I believe we talked about this, but I just wanted to double check.

Thanks,

Matt

  • 0
    TI__Guru 56775 points

     

    Matthew Moranda said:
    Is it okay to leave the MODE/RAMP pins open as No Connects?

    Yes.

    "OPEN"  floating, or "No Connect" are defined functional settings for the RAMP and MODE pins per Table 3 (RAMP) and Table 5 (MODE) in the datasheet.

    When the RAMP pin is "OPEN" it selects ramp capacitor 29.1pF, which provides the fastest transient performance, but requires the most output capacitance to stabilize the loop.

    When the MODE pin is "OPEN" it selects Single Phase "Stand Alone" operation with the frequency set by the RT pin, SYNC in on the SYNC pin, and API disabled.