The other end of this is that by the tint significantly improves when the FET kicks in, so switching to that earlier helps tint consistency and quality. At low current levels the SST-20 has a noticeable green hue. I would actually consider a 1 channel FET driver for the SST-20 if the low modes could be improved.
You edited the post I see.
As my testing of PWM efficiency showed, the old thinking that you could simply take the efficiency at 100% duty and apply it to lower duty’s is not how it works in the real world. The LED does not get as hot and thus the efficiency is improved at lower duty cycles.
For example at 50% duty it was only 10% less efficient then a constant current at the same power IIRC.
Although keep in mind that 10% was purely 10% more lumen output, it is not factor in the efficiency loss from the driver ect. With driver losses factored in the difference would be even less.
Can confirm. The tint isn’t very good until the FET kicks in. So below ~600 lm it’s not what I’d call white. But above ~600 lm, the tint is very nice. People who like a lot of light will probably love this thing.
Ok that’s alright then. My most used modes on the MF01 are 2 and 4 which are both over 600 Lumen. Btw when u say green do you mean greener than the nichia MF01?