I have seen that DER-524 8W reference desig using LYT3325D is using a nice to have inductor design spreadsheet like what we are used to in PI Expert. Yet the LYTSwitch-3 series isn't supported in the software. However, you obviously have a spreadsheet already that does at least churn out the right values - especially for dimming curve and RBS2.
We want to use the LYT3328...
Any chance you might share your Beta-version of that spreadsheet with us?
We have produced thousands of drivers for the old LNK306 then moved to the LNK460 which has since been replaced by the LYT4.
But the LYT3 for European (220VAC) is really what we need.
Buck-boost or flyback are all OK.