* Buck DCM 12V, D=0.3, light load — Erickson M=2/(1+sqrt(1+4K/D^2)), K=2L/(R*Ts)
Vin in 0 DC 12
S1 in sw g 0 SWideal
Vg g 0 PULSE(0 5 0 1n 1n 3u 10u)
D1 0 sw Dfree
L1 sw out 20u
Co out 0 100u
Rload out 0 50
.model SWideal SW(Ron=1m Roff=1meg)
.model Dfree D(Vfwd=0)
.tran 8m
.end