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TPS546D24: Voltage levels of PMBUS signals

Prodigy 230 points

Replies: 1

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Part Number: TPS546D24

Hi,

What is the voltage level of PMBUS signals in TPS546D24 (5V or 3.3V)?

  •  

    The PMBus pins on the TPS546D24 are identical to those found on the TPS546D24A (http://www.ti.com/product/tps546d24a )

    They are compliant with SMBus 3.1.1 1MHz bus speed.

    Pin voltages greater than or equal to 1.35V are guaranteed to be read as a "High"

    Pin voltages less than or equal to 0.8V are guaranteed to be read as a "Low"

    Pin voltages between 0.8V and 1.35V are not guaranteed.

    The internal open-drain pull-down drivers are guaranteed to provide a pin voltage of 0.4V or less when sinking a pull-up current of 20mA or less.

    This is compatible with bus termination voltages of 1.8V, 3.3V or 5V.

    Peter James Miller

    Senior Applications Engineer

    TI Power - Buck Switching Regulators - Mid Voltage

    Senior Member Technical Staff 2020

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