* SPICE netlist
D1 a vin userD
C1 e N006 630
R1 e 0 1000
V4 vin 0 425
D2 0 a userD
L1 a N001 {Lr} Rser=1m
C5 vin b {Cr/2}
L2 b N001 {Lm}
LT2 N003 c 10m Rser=1m
LT3 N002 e 10m Rser=1m
D5 0 c userD
D6 0 d userD
LT1 b N001 {10m*n**2}
C4 b 0 {Cr/2}
S1 a vin g1 0 SW
L3 e vout 50n
I2 vout 0 18 load
R10 N008 0 0.05
R11 N007 0 0.05
R12 N006 0 0.05
C3 vin a 100p
S2 0 a g2 0 SW
C2 a 0 100p
C6 d 0 100p
C7 c 0 100p
C8 e N007 630
C9 vout N008 630
S3 0 d gsr1 0 SW
S4 0 c gsr2 0 SW
V1 g1 0 PULSE(0 12 0 1n 1n {0.5*Ts-dt} {Ts})
V2 g2 0 PULSE(0 12 {0.5*Ts} 1n 1n {0.5*Ts-dt} {Ts})
V3 gsr1 0 PULSE(0 12 {SRdt1} 1n 1n {0.5*Ts-dt-SRdt1-SRdt2} {Ts})
V5 gsr2 0 PULSE(0 12 {SRdt1+0.5*Ts} 1n 1n {0.5*Ts-dt-SRdt1-SRdt2} {Ts})
S5 N004 vout N005 0 SW
V6 N004 0 57.5
V7 N005 0 PULSE(0 12 1.5m 2u 2u 50u)
L4 N002 d 30n
L5 N003 e 30n
.param fs=92k Ts=1/fs
.param duty=0.5
.param dt=200n SRdt1=800n SRdt2=500n
.param simTime=3m
.param dataTime=0.5m
.param maxstep=Ts/100
.param Lm=200u Lr=20u Cr=164n n=3.75
.tran 0 {simTime} {dataTime} {maxstep} uic
k T1 T2 T3 1
.options gmin=1e-10
.options abstol=1e-10
.options reltol=0.003
.options method=gear
.options cshunt=1e-12
.options gshunt=1e-9
.ic v(e)=53.5V V(vout)=53.5V

* LTspice schematic (.asc)
Version 4.1
SHEET 1 2752 1200
WIRE -512 -600 -576 -600
WIRE -224 -600 -512 -600
WIRE 688 -600 -224 -600
WIRE -224 -552 -224 -600
WIRE -224 -552 -320 -552
WIRE -160 -552 -224 -552
WIRE -320 -520 -320 -552
WIRE -224 -520 -224 -552
WIRE -160 -504 -160 -552
WIRE 688 -504 688 -600
WIRE -576 -472 -576 -600
WIRE -320 -424 -320 -440
WIRE -224 -424 -224 -456
WIRE -224 -424 -320 -424
WIRE -160 -424 -160 -440
WIRE -160 -424 -224 -424
WIRE -224 -360 -224 -424
WIRE -160 -360 -224 -360
WIRE 0 -360 -160 -360
WIRE 256 -360 80 -360
WIRE 336 -360 256 -360
WIRE 496 -360 416 -360
WIRE 688 -360 688 -440
WIRE 688 -360 496 -360
WIRE -224 -296 -224 -360
WIRE -224 -296 -320 -296
WIRE -144 -296 -224 -296
WIRE -576 -280 -576 -392
WIRE -320 -264 -320 -296
WIRE -224 -248 -224 -296
WIRE -144 -248 -144 -296
WIRE 688 -248 688 -360
WIRE 256 -232 256 -360
WIRE 320 -232 256 -232
WIRE 496 -232 496 -360
WIRE 496 -232 400 -232
WIRE -320 -152 -320 -184
WIRE -224 -152 -224 -184
WIRE -224 -152 -320 -152
WIRE -144 -152 -144 -184
WIRE -144 -152 -224 -152
WIRE 688 -104 688 -184
WIRE -224 -88 -224 -152
WIRE -112 24 -224 24
WIRE 0 24 -32 24
WIRE 272 24 80 24
WIRE 368 24 272 24
WIRE 480 24 448 24
WIRE 688 24 560 24
WIRE -224 104 -224 24
WIRE -224 104 -320 104
WIRE -144 104 -224 104
WIRE 688 104 688 24
WIRE 688 104 592 104
WIRE 800 104 688 104
WIRE -320 136 -320 104
WIRE 592 136 592 104
WIRE -224 152 -224 104
WIRE -144 152 -144 104
WIRE 688 152 688 104
WIRE 800 152 800 104
WIRE -320 248 -320 216
WIRE -224 248 -224 216
WIRE -224 248 -320 248
WIRE -144 248 -144 216
WIRE -144 248 -224 248
WIRE 592 248 592 216
WIRE 688 248 688 216
WIRE 688 248 592 248
WIRE 800 248 800 216
WIRE 800 248 688 248
WIRE 688 264 688 248
WIRE -224 280 -224 248
WIRE 272 344 272 24
WIRE 464 344 272 344
WIRE 592 344 464 344
WIRE 688 344 592 344
WIRE 832 344 768 344
WIRE 960 344 832 344
WIRE 1056 344 960 344
WIRE 1184 344 1056 344
WIRE 1376 344 1264 344
WIRE 272 424 272 344
WIRE 464 424 464 344
WIRE 592 424 592 344
WIRE 832 424 832 344
WIRE 960 424 960 344
WIRE 1200 440 1200 392
WIRE 1376 456 1376 344
WIRE 464 504 464 488
WIRE 592 504 592 488
WIRE 832 504 832 488
WIRE 272 600 272 504
WIRE 464 600 464 584
WIRE 592 600 592 584
WIRE 832 600 832 584
WIRE 960 600 960 504
WIRE 1200 600 1200 520
WIRE 1376 600 1376 536
FLAG -224 -88 0
FLAG 464 600 0
FLAG 272 600 0
FLAG -160 -360 a
FLAG -576 -280 0
FLAG 688 264 0
FLAG -224 280 0
FLAG 1056 344 vout
FLAG -512 -600 vin
FLAG 688 24 c
FLAG -224 24 d
FLAG 688 -104 0
FLAG -368 -456 0
FLAG -368 -504 g1
FLAG -368 -200 0
FLAG -368 -248 g2
FLAG 688 -360 b
FLAG 592 600 0
FLAG 832 600 0
FLAG 464 344 e
FLAG 960 600 0
FLAG -368 200 0
FLAG -368 152 gsr1
FLAG 544 200 0
FLAG 544 152 gsr2
FLAG -1376 -440 0
FLAG -1376 -520 g1
FLAG -1376 -280 0
FLAG -1376 -360 g2
FLAG -1376 -104 0
FLAG -1376 -184 gsr1
FLAG -1376 72 0
FLAG -1376 -8 gsr2
FLAG 1248 392 0
FLAG 1376 600 0
FLAG 1200 600 0
SYMBOL diode -208 -456 R180
SYMATTR InstName D1
SYMATTR Value userD
SYMBOL cap 448 424 R0
SYMATTR Value 630u
SYMATTR InstName C1
SYMBOL res 256 408 R0
SYMATTR InstName R1
SYMATTR Value 1000
SYMBOL voltage -576 -488 R0
SYMATTR InstName V4
SYMATTR Value 425
SYMBOL diode -208 -184 R180
SYMATTR InstName D2
SYMATTR Value userD
SYMBOL ind -16 -344 R270
SYMATTR InstName L1
SYMATTR Value {Lr}
SYMATTR SpiceLine Rser=1m
SYMBOL cap 672 -504 R0
SYMATTR InstName C5
SYMATTR Value {Cr/2}
SYMBOL ind2 432 -376 R90
SYMATTR InstName L2
SYMATTR Value {Lm}
SYMATTR Type ind
SYMBOL ind2 464 40 R270
SYMATTR InstName T2
SYMATTR Value 10m
SYMATTR SpiceLine Rser=1m
SYMATTR Type ind
SYMBOL ind2 -16 40 R270
SYMATTR InstName T3
SYMATTR Value 10m
SYMATTR SpiceLine Rser=1m
SYMATTR Type ind
SYMBOL diode 704 216 R180
SYMATTR InstName D5
SYMATTR Value userD
SYMBOL diode -208 216 R180
SYMATTR InstName D6
SYMATTR Value userD
SYMBOL ind2 416 -248 R90
SYMATTR InstName T1
SYMATTR Value {10m*n**2}
SYMATTR Type ind
SYMBOL cap 672 -248 R0
SYMATTR InstName C4
SYMATTR Value {Cr/2}
SYMBOL sw -320 -424 M180
SYMATTR InstName S1
SYMBOL ind 672 360 R270
SYMATTR InstName L3
SYMATTR Value 50n
SYMBOL current 960 424 R0
SYMATTR Value 18
SYMATTR SpiceLine load
SYMATTR InstName I2
SYMBOL res 816 488 R0
SYMATTR InstName R10
SYMATTR Value 0.05
SYMBOL res 576 488 R0
SYMATTR InstName R11
SYMATTR Value 0.05
SYMBOL res 448 488 R0
SYMATTR InstName R12
SYMATTR Value 0.05
SYMBOL cap -176 -504 R0
SYMATTR InstName C3
SYMATTR Value 100p
SYMBOL sw -320 -168 M180
SYMATTR InstName S2
SYMBOL cap -160 -248 R0
SYMATTR InstName C2
SYMATTR Value 100p
SYMBOL cap -160 152 R0
SYMATTR InstName C6
SYMATTR Value 100p
SYMBOL cap 784 152 R0
SYMATTR InstName C7
SYMATTR Value 100p
SYMBOL cap 576 424 R0
SYMATTR Value 630u
SYMATTR InstName C8
SYMBOL cap 816 424 R0
SYMATTR Value 630u
SYMATTR InstName C9
SYMBOL sw -320 232 M180
SYMATTR InstName S3
SYMBOL sw 592 232 M180
SYMATTR InstName S4
SYMBOL voltage -1376 -536 R0
SYMATTR InstName V1
SYMATTR Value PULSE(0 12 0 1n 1n {0.5*Ts-dt} {Ts})
SYMBOL voltage -1376 -376 R0
SYMATTR InstName V2
SYMATTR Value PULSE(0 12 {0.5*Ts} 1n 1n {0.5*Ts-dt} {Ts})
SYMBOL voltage -1376 -200 R0
SYMATTR InstName V3
SYMATTR Value PULSE(0 12 {SRdt1} 1n 1n {0.5*Ts-dt-SRdt1-SRdt2} {Ts})
SYMBOL voltage -1376 -24 R0
SYMATTR InstName V5
SYMATTR Value PULSE(0 12 {SRdt1+0.5*Ts} 1n 1n {0.5*Ts-dt-SRdt1-SRdt2} {Ts})
SYMBOL sw 1280 344 M270
SYMATTR InstName S5
SYMBOL voltage 1376 440 R0
SYMATTR InstName V6
SYMATTR Value 57.5
SYMBOL voltage 1200 424 R0
SYMATTR Value PULSE(0 12 1.5m 2u 2u 50u)
SYMATTR InstName V7
SYMBOL ind -16 8 R90
SYMATTR InstName L4
SYMATTR Value 30n
SYMBOL ind 464 8 R90
SYMATTR InstName L5
SYMATTR Value 30n