I'm working on a project based on RDR290 (IC - lnk420) desing. I'm searching for a best solution to change output current without using any kind of dimming. I only need 2 values of output current - 100%(2.1A) and ~50%(~1.1A). Easiest way, i think, is to change one of FB resistors value, but i cant find any info about how to recalculate this value. Any ideas?