I'm intending on building a off line (230VAC), 50W, isolated, constant-current switch mode power supply. This by itself is not a big challenge with the plethora of application notes and examples available.
However, a particular requirement that I have is i need to provide a voltage range on the output of 1V-100V. For the 50W power level, I would expect a flyback converter to be the best topology, but my understanding of flybacks leads me to believe I cannot achieve that range on the output.
My question is; have I missed something with flyback topology design, and is there a different topology that is more suitable for the requirements?
EDIT: The 50W quote for power is maximum power output. The minimum power output would be ~1W. So to keep the current constant, the supply could go between 1V and 100V.