I am designing system that includes a solar power stage with an MPP tracker. The DC/DC converter in the MPPT is feedforward, i.e. it regulates the input voltage of the solar panel to the maximum power point. However, the output is then left unregulated. Note: it will not be connected to a battery directly like it is often done, it will be a separate "MPPT bus" from which various loads will draw.
In such a configuration, what would determine the output voltage of the converter? Is it the load, or do component values play a role as well? Or is the duty cycle still defining the input/output voltage relationship?
I am using a buck/boost converter, but you can assume any non-isolated topology, I am looking to understand the principle.