* SPICE netlist
MQ1 N004 N025 0 0 SUD40N10-25
R1 N012 N014 330K
C1 VAO N014 .0047
C2 VAO N012 .047
V1 N008 0 17
R2 N017 N018 10K
C3 N013 N018 10p
C4 N013 N017 100p
L1 N003 N004 750
R3 N003 N006 1Meg
C5 N006 0 470p
D1 N004 PFC D
C6 PFC 0 18
D2 N001 N003 1N4001
D3 N002 N005 1N4001
D4 N002 N001 1N4001
D5 N005 N003 1N4001
R4 N002 0 .2
V2 N001 N005 SINE(0 165 600)
R5 N010 0 20K
R6 PFC N010 1Meg
R7 N010 N014 20K
R8 N007 N002 4K
C7 N034 0 .001
C8 N026 0 1000p
R9 N024 0 15K
R10 N011 N009 10K
R11 N013 0 4K
R12 N009 N002 1.6K
C9 N009 0 1000p
C10 N035 0 .001
R13 N032 0 .5
MQ2 N028 N036 N032 N032 SUD40N10-25
L2 N015 0 10m
L3 N016 N021 20m
MQ3 PFC N016 N021 N021 SUD40N10-25
L4 N021 N028 5m
L5 N022 0 200
R14 N016 N021 20K
D6 N016 N019 DZ
D7 N021 N019 DZ
D8 N022 N023 PDS5100
D9 0 N023 PDS5100
L6 N023 OUT 67
C11 OUT 0 470 Rser=.1
R15 N027 N036 10
C12 N015 N020 1
R16 N020 N027 10
D10 0 N021 D
D11 N028 PFC D
R17 OUT N038 24K
R18 N038 0 730
C13 N030 0 100p
C14 0 N029 1000p
R19 N030 N029 10K
Q4 N030 N033 N037 0 NPN
R20 N037 0 100
R21 N032 N031 1K
C15 N031 0 500p
R22 N038 N033 10K
XU1 N025 0 0 N026 N009 N018 N013 N007 N006 VAO N010 N011 N035 N014 N024 N034 N008 N030 N031 N027 LT1508 ;pnba GTDR1)GND2)GND1)Cset)PKlim)CAout)Isense)Mout)Iac)VAout)OVP)REF)SS2)Vsense)Rset)SS1)Vcc)Vc)Ilim)GTDR2
Rload OUT 0 10
.tran 2.5m uic
.ic V(pfc)=385 V(vao)=3 V(out)=24 V(vc)=3
K1 L2 L3 1
K2 L4 L5 1

* LTspice schematic (.asc)
Version 4
SHEET 1 3472 1104
WIRE -1336 -552 -1736 -552
WIRE -1336 -536 -1336 -552
WIRE -1336 -536 -1432 -536
WIRE -1256 -536 -1336 -536
WIRE -1432 -520 -1432 -536
WIRE -1256 -520 -1256 -536
WIRE -1736 -488 -1736 -552
WIRE -1432 -440 -1432 -456
WIRE -1432 -440 -1464 -440
WIRE -1256 -440 -1256 -456
WIRE -648 -440 -1256 -440
WIRE -232 -440 -648 -440
WIRE 88 -440 -152 -440
WIRE 136 -440 88 -440
WIRE 248 -440 200 -440
WIRE 376 -440 248 -440
WIRE 920 -440 376 -440
WIRE 1016 -440 920 -440
WIRE -1432 -424 -1432 -440
WIRE -1256 -424 -1256 -440
WIRE -648 -424 -648 -440
WIRE 376 -424 376 -440
WIRE -1432 -344 -1432 -360
WIRE -1336 -344 -1432 -344
WIRE -1256 -344 -1256 -360
WIRE -1256 -344 -1336 -344
WIRE 248 -344 248 -440
WIRE 376 -344 376 -360
WIRE -1736 -328 -1736 -408
WIRE -1336 -328 -1336 -344
WIRE -1336 -328 -1736 -328
WIRE -648 -328 -648 -344
WIRE -472 -328 -648 -328
WIRE -360 -328 -408 -328
WIRE -1464 -312 -1464 -440
WIRE -1336 -312 -1464 -312
WIRE -1112 -312 -1336 -312
WIRE -840 -312 -1032 -312
WIRE -1464 -296 -1464 -312
WIRE -840 -280 -840 -312
WIRE -648 -280 -648 -328
WIRE -152 -264 -264 -264
WIRE -152 -248 -152 -264
WIRE -1464 -200 -1464 -216
WIRE -1336 -200 -1336 -312
WIRE -1304 -200 -1336 -200
WIRE -1144 -200 -1224 -200
WIRE -968 -200 -1144 -200
WIRE -264 -200 -264 -264
WIRE -264 -200 -520 -200
WIRE 248 -168 248 -264
WIRE 248 -168 8 -168
WIRE -152 -152 -152 -168
WIRE 248 -152 248 -168
WIRE -1224 -120 -1272 -120
WIRE -1144 -120 -1144 -200
WIRE -1144 -120 -1160 -120
WIRE -1112 -120 -1144 -120
WIRE -968 -120 -1032 -120
WIRE -472 -120 -520 -120
WIRE -424 -120 -472 -120
WIRE -360 -120 -424 -120
WIRE -232 -120 -296 -120
WIRE 920 -120 920 -440
WIRE 1016 -120 1016 -440
WIRE 248 -56 248 -72
WIRE -1400 -40 -1416 -40
WIRE -1272 -40 -1320 -40
WIRE -1080 -40 -1272 -40
WIRE -968 -40 -1080 -40
WIRE -472 -40 -472 -56
WIRE -472 -40 -520 -40
WIRE -232 -40 -472 -40
WIRE -120 -40 -232 -40
WIRE 8 -40 8 -168
WIRE 8 -40 -40 -40
WIRE 568 -40 392 -40
WIRE 728 -40 616 -40
WIRE 824 -40 728 -40
WIRE 872 -40 824 -40
WIRE 392 -8 392 -40
WIRE 568 -8 568 -40
WIRE 616 -8 616 -40
WIRE 824 -8 824 -40
WIRE -1272 40 -1272 24
WIRE -1208 40 -1272 40
WIRE -1080 40 -1080 24
WIRE -1080 40 -1128 40
WIRE -968 40 -1080 40
WIRE 8 40 8 -40
WIRE 8 40 -520 40
WIRE 88 40 88 -440
WIRE 728 40 728 24
WIRE 392 88 392 56
WIRE 568 104 568 72
WIRE 616 104 616 72
WIRE 728 104 616 104
WIRE 824 104 824 72
WIRE 824 104 728 104
WIRE 920 104 920 -24
WIRE 920 104 824 104
WIRE 1096 104 920 104
WIRE 1208 104 1144 104
WIRE 1304 104 1272 104
WIRE 1368 104 1304 104
WIRE 1480 104 1448 104
WIRE 1672 104 1480 104
WIRE 1736 104 1672 104
WIRE -1304 120 -1384 120
WIRE -968 120 -1224 120
WIRE 40 120 -520 120
WIRE 920 120 920 104
WIRE 1096 120 1096 104
WIRE 1144 120 1144 104
WIRE 1304 120 1304 104
WIRE 1480 120 1480 104
WIRE 1736 120 1736 104
WIRE 88 168 88 136
WIRE -1080 200 -1112 200
WIRE -968 200 -1016 200
WIRE 392 200 392 168
WIRE 392 200 -520 200
WIRE 920 200 920 184
WIRE 1016 216 1016 -56
WIRE 1096 216 1096 200
WIRE 1096 216 1016 216
WIRE 1144 216 1144 200
WIRE 1304 216 1304 184
WIRE 1304 216 1144 216
WIRE 1480 216 1480 184
WIRE 1480 216 1304 216
WIRE 1736 216 1736 200
WIRE 1736 216 1480 216
WIRE 1736 232 1736 216
WIRE 392 248 392 200
WIRE -1368 280 -1416 280
WIRE -1256 280 -1288 280
WIRE -1128 280 -1256 280
WIRE -968 280 -1128 280
WIRE -408 280 -520 280
WIRE -136 280 -408 280
WIRE 168 280 -56 280
WIRE -1128 296 -1128 280
WIRE 1016 296 1016 216
WIRE -1416 312 -1416 280
WIRE -1256 312 -1256 280
WIRE 1672 312 1672 104
WIRE -408 328 -408 280
WIRE -1016 344 -1064 344
WIRE -920 376 -920 360
WIRE -808 376 -808 360
WIRE -680 376 -680 360
WIRE -568 376 -568 360
WIRE 392 376 392 328
WIRE 968 376 392 376
WIRE -1416 408 -1416 376
WIRE -1256 408 -1256 376
WIRE -1128 408 -1128 392
WIRE 168 408 168 280
WIRE 1016 408 1016 392
WIRE 1016 408 168 408
WIRE 1560 408 1528 408
WIRE 1672 408 1672 392
WIRE 1672 408 1640 408
WIRE 1016 424 1016 408
WIRE 1672 424 1672 408
WIRE -920 456 -920 440
WIRE -568 456 -568 440
WIRE -408 456 -408 392
WIRE -1128 504 -1128 488
WIRE 1016 520 1016 504
WIRE 1672 520 1672 504
WIRE -1016 552 -1016 344
WIRE 1528 552 1528 408
WIRE 1528 552 -1016 552
FLAG -808 376 0
FLAG 88 168 0
FLAG -152 -152 0
FLAG -360 -328 0
FLAG 376 -344 0
FLAG -1464 -200 0
FLAG 248 -56 0
FLAG -920 456 0
FLAG -1112 200 0
FLAG -1384 120 0
FLAG -1416 -40 0
FLAG -1272 -120 0
FLAG -680 376 0
FLAG -568 456 0
FLAG 1016 520 0
FLAG 568 104 0
FLAG 920 200 0
FLAG 1736 232 0
FLAG -1256 408 0
FLAG -1416 408 0
FLAG -1128 504 0
FLAG 1672 520 0
FLAG -408 456 0
FLAG 1672 104 OUT
FLAG 920 -440 PFC
FLAG -424 -120 VAO
SYMBOL NMOS 40 40 R0
SYMATTR InstName Q1
SYMATTR Value SUD40N10-25
SYMBOL RES -248 -136 R0
SYMATTR InstName R1
SYMATTR Value 330K
SYMBOL cap -488 -120 R0
SYMATTR InstName C1
SYMATTR Value .0047
SYMBOL cap -360 -104 R270
SYMATTR InstName C2
SYMATTR Value .047
SYMBOL VOLTAGE -152 -264 R0
SYMATTR InstName V1
SYMATTR Value 17
SYMBOL res -1224 56 R270
SYMATTR InstName R2
SYMATTR Value 10K
SYMBOL cap -1096 -40 R0
SYMATTR InstName C3
SYMATTR Value 10p
SYMBOL cap -1288 -40 R0
SYMATTR InstName C4
SYMATTR Value 100p
SYMBOL ind2 -248 -424 R270
SYMATTR InstName L1
SYMATTR Value 750
SYMBOL res -664 -440 R0
SYMATTR InstName R3
SYMATTR Value 1Meg
SYMBOL cap -472 -312 R270
SYMATTR InstName C5
SYMATTR Value 470p
SYMBOL diode 136 -424 R270
SYMATTR InstName D1
SYMBOL polcap 360 -424 R0
SYMATTR InstName C6
SYMATTR Value 18
SYMBOL diode -1272 -520 R0
SYMATTR Value 1N4001
SYMATTR InstName D2
SYMBOL diode -1448 -424 R0
SYMATTR InstName D3
SYMATTR Value 1N4001
SYMBOL diode -1448 -456 M180
SYMATTR InstName D4
SYMATTR Value 1N4001
SYMBOL diode -1272 -360 M180
SYMATTR InstName D5
SYMATTR Value 1N4001
SYMBOL res -1480 -312 R0
SYMATTR InstName R4
SYMATTR Value .2
SYMBOL voltage -1736 -504 R0
SYMATTR InstName V2
SYMATTR Value SINE(0 165 600)
SYMBOL res 232 -168 R0
SYMATTR InstName R5
SYMATTR Value 20K
SYMBOL res 232 -360 R0
SYMATTR InstName R6
SYMATTR Value 1Meg
SYMBOL res -24 -56 R90
SYMATTR InstName R7
SYMATTR Value 20K
SYMBOL res -1016 -328 R90
SYMATTR InstName R8
SYMATTR Value 4K
SYMBOL cap -936 376 R0
SYMATTR InstName C7
SYMATTR Value .001
SYMBOL cap -1016 184 R90
SYMATTR InstName C8
SYMATTR Value 1000p
SYMBOL res -1208 104 R90
SYMATTR InstName R9
SYMATTR Value 15K
SYMBOL res -1016 -104 M270
SYMATTR InstName R10
SYMATTR Value 10K
SYMBOL res -1304 -56 R90
SYMATTR InstName R11
SYMATTR Value 4K
SYMBOL res -1208 -184 M270
SYMATTR InstName R12
SYMATTR Value 1.6K
SYMBOL cap -1160 -136 R90
SYMATTR InstName C9
SYMATTR Value 1000p
SYMBOL cap -584 376 R0
SYMATTR InstName C10
SYMATTR Value .001
SYMBOL res 1000 408 R0
SYMATTR InstName R13
SYMATTR Value .5
SYMBOL NMOS 968 296 R0
SYMATTR InstName Q2
SYMATTR Value SUD40N10-25
SYMBOL ind2 552 -24 R0
SYMATTR InstName L2
SYMATTR Value 10m
SYMBOL ind2 632 -24 M0
SYMATTR InstName L3
SYMATTR Value 20m
SYMBOL NMOS 872 -120 R0
SYMATTR InstName Q3
SYMATTR Value SUD40N10-25
SYMBOL ind2 1080 104 R0
SYMATTR InstName L4
SYMATTR Value 5m
SYMBOL ind2 1160 104 M0
SYMATTR InstName L5
SYMATTR Value 200
SYMBOL res 808 -24 R0
SYMATTR InstName R14
SYMATTR Value 20K
SYMBOL diode 712 -40 R0
SYMATTR InstName D6
SYMATTR Value DZ
SYMBOL diode 712 104 M180
SYMATTR InstName D7
SYMATTR Value DZ
SYMBOL diode 1208 120 R270
SYMATTR InstName D8
SYMATTR Value PDS5100
SYMBOL diode 1288 184 M180
SYMATTR InstName D9
SYMATTR Value PDS5100
SYMBOL ind 1352 120 R270
SYMATTR InstName L6
SYMATTR Value 67
SYMBOL polcap 1464 120 R0
SYMATTR SpiceLine Rser=.1
SYMATTR InstName C11
SYMATTR Value 470
SYMBOL res 376 232 R0
SYMATTR InstName R15
SYMATTR Value 10
SYMBOL cap 376 -8 R0
SYMATTR InstName C12
SYMATTR Value 1
SYMBOL res 408 72 M0
SYMATTR InstName R16
SYMATTR Value 10
SYMBOL diode 904 184 M180
SYMATTR InstName D10
SYMBOL diode 1000 -56 M180
SYMATTR InstName D11
SYMBOL res 1656 296 R0
SYMATTR InstName R17
SYMATTR Value 24K
SYMBOL res 1656 408 R0
SYMATTR InstName R18
SYMATTR Value 730
SYMBOL cap -1272 312 R0
SYMATTR InstName C13
SYMATTR Value 100p
SYMBOL cap -1432 376 M180
SYMATTR InstName C14
SYMATTR Value 1000p
SYMBOL res -1272 264 R90
SYMATTR InstName R19
SYMATTR Value 10K
SYMBOL NPN -1064 296 M0
SYMATTR InstName Q4
SYMBOL res -1144 392 R0
SYMATTR InstName R20
SYMATTR Value 100
SYMBOL res -40 264 R90
SYMATTR InstName R21
SYMATTR Value 1K
SYMBOL cap -424 328 R0
SYMATTR InstName C15
SYMATTR Value 500p
SYMBOL res 1656 392 R90
SYMATTR InstName R22
SYMATTR Value 10K
SYMBOL PowerProducts\\LT1508 -744 40 R0
SYMATTR InstName U1
SYMBOL res 1720 104 R0
SYMATTR InstName Rload
SYMATTR Value 10