Version 4
SHEET 1 1500 848
WIRE -352 -240 -576 -240
WIRE -16 -240 -192 -240
WIRE 320 -240 80 -240
WIRE 480 -240 320 -240
WIRE 528 -240 480 -240
WIRE -576 -224 -576 -240
WIRE 320 -192 320 -240
WIRE -16 -160 -112 -160
WIRE 128 -160 80 -160
WIRE 480 -144 480 -240
WIRE 688 -80 688 -128
WIRE 320 -64 320 -112
WIRE -576 48 -576 -144
WIRE -112 48 -112 -160
WIRE -112 48 -576 48
WIRE 128 48 128 -160
WIRE 128 48 -112 48
WIRE 320 48 320 0
WIRE 320 48 128 48
WIRE 480 48 480 -64
WIRE 480 48 320 48
WIRE 624 128 464 128
WIRE -272 144 -272 -176
WIRE 96 144 -272 144
WIRE 400 144 288 144
WIRE 496 160 464 160
WIRE 496 224 496 160
WIRE 496 224 400 224
WIRE 400 256 400 224
WIRE 496 272 496 224
WIRE 496 368 496 352
FLAG 624 208 0
FLAG 400 336 0
FLAG -112 48 0
FLAG 528 -240 Vout
FLAG 496 368 Vout
FLAG 688 0 0
SYMBOL 1395\ VCO 192 160 R0
WINDOW 39 -131 -88 Left 0
WINDOW 40 27 -90 Left 0
WINDOW 3 -57 56 Left 0
SYMATTR SpiceLine FMAX =200k
SYMATTR SpiceLine2 FMIN = 50k
SYMATTR Value 1395MOD
SYMATTR InstName U1
SYMBOL ampsimp 432 144 M0
WINDOW 38 -66 -58 Left 0
SYMATTR SpiceLine POLE=30 GAIN=30000 VHIGH=8V VLOW=100mV
SYMATTR InstName U2
SYMBOL voltage 624 112 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 2.5
SYMBOL res 384 240 R0
SYMATTR InstName R1
SYMATTR Value 7k
SYMBOL res 480 256 R0
SYMATTR InstName R2
SYMATTR Value 62k
SYMBOL XFMR1 32 -208 R0
SYMATTR InstName U4
SYMATTR SpiceLine RATIO=1/N
SYMBOL voltage -576 -240 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V3
SYMATTR Value {Vin}
SYMBOL res 304 -208 R0
SYMATTR InstName R3
SYMATTR Value 50m
SYMBOL cap 304 -64 R0
SYMATTR InstName C1
SYMATTR Value 2.2m
SYMATTR Value2 IC=5
SYMBOL res 464 -160 R0
SYMATTR InstName R4
SYMATTR Value {Rload}
SYMBOL voltage 688 -96 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value {Rload}
SYMBOL LLC -288 -224 R0
SYMATTR InstName U3
TEXT 840 -288 Left 0 !.tran 0 500m 0 uic
TEXT -336 -432 Left 0 !.INCLUDE APPLICATION.LIB
TEXT 832 -248 Left 0 !.param Vin=350\n+ Vout = 24V\n \n+ Rupper=(Vout-2.495)/(2.495/10k)\n \n+ Pout =250W\n+ Fmax= 250k\n+ Fmin = 40k\n+ Q=2\n \n+ Rload=Vout**2/Pout\n \n+ Lm=600u\n+ Ratio=6\n+ Ls=Lm/Ratio\n+ Cs=33n\n+ pi=3.14159\n+ N=8\n+ Eta=0.95\n \n+ Fs=1/(2*pi*sqrt(Ls*Cs))\n+ Fm=1/(2*pi*sqrt((Ls+Lm)*Cs))\n+ Z0=sqrt(Ls/Cs)
TEXT 240 -328 Left 0 !*.IC V(Vout)=24