I have configured LNK304PN IC to give 5V Output as shown in the attached schematic file. I have attached image of 5V which i am getting from oscilloscope.
Please help me to get pure 5V DC output.
Below are specification of components
Supply used 220V AC 50Hz
After rectification Drain pin is getting 310V DC
L1=1.2mH and also L1 = 680uH
Cout i tried different values = 1uf, 10uf , 470uf
at the output their is voltage drop of 1.2 to 1.8V after every 10ms. I have checked the Drain input pin and i m getting 310V DC without voltage dips.