I have used LYT1603 IC for my 10Watt driver using RDR-464 design. It works well with 89% efficiebncy. OVP is also working well.
But It starts flickering When I place two driver nearby.
Power Input : 180-300 VAC (220 VAC), 50Hz , 10.3Watt Total usage, 89% Efficiency
Power Output : 48 V DC, 190 mA
Indcutor : EE16, 160Turn, 1250 mH
MUR160 Diode, 0.33E Feedback,
100uF output capacitor, 47nF +100 nF + 2.2mH Input Filter
It works well when there is no other driver nearby. But It start flicker when two same driver placed nearby. I have attached layout
When I try to shield the area with copper tape it will stops flickering. There is no issue with that.
Please Also note that. I have tried some different PCB layouts but problem still occurs.