Re: Is this this circuit going to revolutionise Switch Mode Power Supplies worldwide?
According to an article I read, electric utilities would love to see more of any type of power supply that pulls a more continuous current waveform.
It is because our typical familiar mains-to-DC adapter draws a current spike at every sine peak. (This describes the common full diode bridge and smoothing capacitor.) With so many of such power supplies in use, electric generators must provide a massive Ampere 'whump' onto the grid, at peak sine voltage. This is only at the peak and it is out of all proportion to Amperes drawn during all other parts of the AC cycle.
Because of that massive 'whump', power companies need to build larger everything (generators, wiring, relays, sensors, etc.), so that the grid waveform does not become distorted. Therefore they are likely to welcome any topology which reduces this massive 'whump', meaning it should pull during all parts of the AC cycle.
Clever use of inductors/ transformers might help somewhat in this regard. (Perhaps it could be a sepic/ Ćuk type. Why not?)
In any case manufacturers will make whatever type of power supply is easy to make, and which is profitable.
It would be interesting to find out whether Mr. Ćuk is entitled to royalties. Manufacturers sometimes wait until a patent expires, before implementing its technology.
But in exchange, one needs to have a lot of extra housekeeping circuitry to manage the control of this converter.
This could limit its acceptance. There seems to be a rule for power supply topologies: Every advantage is offset by some disadvantage.