TPS53667: Could you help check the connection between TPS53667 and MCU?

Hello, can this device support AVS through PMBus VOUT COMMAND? 

Hi Schurmann,

The MCU does not support AVS through PMBus VOUT Command. This is just a AVSFB pin for MCU's output.

Thanks!

Dylan

The name of the pin is confusing to me. IT should be a voltage DAC output, I believe, correct?

We would need to know the DAC voltage range, how fast it changes, slew rate, and when in the power sequence it gets enabled. And how much range does it expect to be able to adjust the target output voltage?

It might be possible to make this work. But, for TPS53667, we use a 1:1 scale (no voltage division) for normal output voltage ranges. And so, to lower the voltage, the DAC reference would need to be higher than the voltage of the VR.