From 12 Vdc, a SMPS needs to designed for 3,3V with 0,01Vpkpk ripple. There are 4 LEDs as a load. They are connected in parallel. Each LED requires 350mA and 3,3 Volt. Selected the switching frequency is 25kHz. The current in the Lm has %10 ripple of its average. As a design rule set the D to 0,4. Complete the design.