(newbie question) Briefly: In a converter (let's say DC-DC), I want to dictate a voltage to the output of solar panel, on the fly.
As I look around online, for example in some IEEE papers, Buck or Boost converters are used to regulate the second stage: the charging current and voltage. I studied them a bit. But I don't understand: Does changing their duty cycle, regulate their input voltage too? If not, what kind of IC regulates input, based on given duty cycle? Please note that I don't want an on-chip MPPT solution. But to regulate the input of my converter i.e. the output of the solar panel. A microprocessor will specify the voltage of solar panel, through PWM duty cycles.
Going through the products of T.I. or Linear I did not find such an Item.
Solar panel's typical power output would be in the range of 5w...
In this project, it is not important what the charging voltage (second stage) is, actually.
I'll gladly edit, clarify or rephrase the question or title, if you see a problem.