I have designed a smart lamp (RGB, warm white, cool white, dimming) with LYT2004. All seems to be fine but I get a flicker at only some dimming levels of the white light.
Output voltage = 26 V
Current limit = 0.27 A
PWM = ~750 Hz
When looking at the output voltage using oscilloscope I get somewhat different looks for different brightness level ranges. In one of the ranges I get the flicker. It happens at around 20% duty cycle. The output voltage jumps up for a few PWM pulse and then gets back to where it needs to be. This seems to be happening at random. At 100% the output voltage line is nice and flat.
I have attached some plots.
Any help, suggestions welcome. I am happy to provide more information if needed.