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TPS53667: set PMbus voltage level

Jerry Chen
Expert 5110 points
Part Number: TPS53667

Hi team,

I saw the PMbus interface supports either 3.3V or 1.8V voltage level. Where to set it?

Thanks.

  • 0
    TI__Genius 11095 points

    Hello, there is not a setting or pinstrap as such. The VIH and VIL levels are set up such that the logic is compatible with either pull-up voltage, and the pull-down on the data pin is strong enough to pull down to the logic low level. Note in the SMBus v2.0 spec high power DC specs, there is only one spec for pull-up voltage of 1.8V to 5V.