Version 4
SHEET 1 880 744
WIRE -576 16 -624 16
WIRE -464 16 -496 16
WIRE -160 16 -464 16
WIRE -64 16 -160 16
WIRE -64 64 -64 16
WIRE -224 96 -352 96
WIRE -352 112 -352 96
WIRE -160 112 -160 16
WIRE 176 128 144 128
WIRE 272 128 240 128
WIRE 288 128 272 128
WIRE 384 128 368 128
WIRE 432 128 384 128
WIRE 448 128 432 128
WIRE -224 192 -224 96
WIRE -208 192 -224 192
WIRE 384 192 384 128
WIRE 384 192 320 192
WIRE -352 208 -352 192
WIRE -160 208 -352 208
WIRE 176 208 160 208
WIRE 272 208 272 128
WIRE 272 208 240 208
WIRE 448 208 448 128
WIRE -464 224 -464 16
WIRE -464 224 -544 224
WIRE 320 224 320 192
WIRE 384 224 384 192
WIRE -624 272 -624 16
WIRE -544 272 -544 224
WIRE -464 272 -464 224
WIRE -160 272 -160 208
WIRE -32 272 -160 272
WIRE 32 272 -32 272
WIRE 144 272 144 128
WIRE 144 272 80 272
WIRE 144 288 144 272
WIRE 176 288 144 288
WIRE 320 288 240 288
WIRE -224 320 -352 320
WIRE -160 320 -160 272
WIRE -352 336 -352 320
WIRE -64 368 -64 128
WIRE -32 368 -64 368
WIRE 32 368 32 352
WIRE 32 368 -32 368
WIRE 80 368 80 352
WIRE 160 368 160 208
WIRE 160 368 80 368
WIRE 176 368 160 368
WIRE 320 368 320 288
WIRE 320 368 240 368
WIRE 384 368 384 288
WIRE 384 368 320 368
WIRE 448 368 448 288
WIRE 448 368 384 368
WIRE -544 384 -544 336
WIRE -464 384 -464 336
WIRE -464 384 -544 384
WIRE -224 400 -224 320
WIRE -208 400 -224 400
WIRE -64 400 -64 368
WIRE -160 432 -160 416
WIRE 448 432 448 368
WIRE -624 528 -624 352
WIRE -464 528 -464 384
WIRE -464 528 -624 528
WIRE -352 528 -352 416
WIRE -352 528 -464 528
WIRE -160 528 -160 512
WIRE -160 528 -352 528
WIRE -160 576 -160 528
WIRE -64 576 -64 464
WIRE -64 576 -160 576
WIRE -160 608 -160 576
FLAG -160 608 0
FLAG 448 432 0
FLAG 432 128 out
FLAG -32 272 p1
FLAG -32 368 p2
SYMBOL ind2 16 256 R0
WINDOW 0 -21 38 Left 2
WINDOW 3 -47 68 Left 2
SYMATTR InstName L1
SYMATTR Value 20u
SYMATTR Type ind
SYMATTR SpiceLine Rser=10u
SYMBOL ind2 96 256 M0
WINDOW 0 -26 34 Left 2
WINDOW 3 -57 71 Left 2
SYMATTR InstName L2
SYMATTR Value 3200u
SYMATTR Type ind
SYMATTR SpiceLine Rser=200u
SYMBOL nmos -208 320 R0
WINDOW 3 -49 101 Left 2
SYMATTR InstName M1
SYMATTR Value HUFA76645
SYMBOL voltage -624 256 R0
WINDOW 123 0 0 Left 2
WINDOW 39 -24 159 Left 2
SYMATTR SpiceLine Rser=50m
SYMATTR InstName V1
SYMATTR Value 48
SYMBOL polcap 368 224 R0
WINDOW 3 24 64 Left 2
SYMATTR Value 100u
SYMATTR InstName C1
SYMATTR Description Capacitor
SYMATTR Type cap
SYMATTR SpiceLine V=100 Irms=385m Rser=0.18 Lser=0 mfg="Nichicon" pn="UPR2A101MRH" type="Al electrolytic"
SYMBOL res 432 192 R0
SYMATTR InstName R1
SYMATTR Value 150
SYMBOL voltage -352 320 R0
WINDOW 123 0 0 Left 2
WINDOW 39 8 96 Left 2
WINDOW 3 -295 238 Left 2
SYMATTR SpiceLine Rser=1
SYMATTR Value PULSE(0 10 20u 10n 10n 19.8u 40u 1000)
SYMATTR InstName V2
SYMBOL nmos -208 112 R0
WINDOW 3 -20 115 Left 2
SYMATTR InstName M3
SYMATTR Value HUFA76645
SYMBOL voltage -352 96 R0
WINDOW 123 0 0 Left 2
WINDOW 39 6 94 Left 2
WINDOW 3 -295 497 Left 2
SYMATTR SpiceLine Rser=1
SYMATTR Value PULSE(0 10 0 10n 10n 19.8u 40u 1000)
SYMATTR InstName V4
SYMBOL polcap -480 272 R0
WINDOW 3 24 64 Left 2
SYMATTR Value 1000u
SYMATTR InstName C2
SYMATTR Description Capacitor
SYMATTR Type cap
SYMATTR SpiceLine V=63 Irms=185m Rser=50m Lser=0
SYMBOL cap -560 272 R0
SYMATTR InstName C4
SYMATTR Value 1u
SYMATTR SpiceLine Rser=10m
SYMBOL res -144 528 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R3
SYMATTR Value 10m
SYMBOL diode 176 112 M90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D1
SYMATTR Value UPSC600
SYMBOL diode 176 192 M90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D2
SYMATTR Value UPSC600
SYMBOL diode 240 272 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D3
SYMATTR Value UPSC600
SYMBOL diode 240 352 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D4
SYMATTR Value UPSC600
SYMBOL cap -48 128 R180
WINDOW 0 24 56 Left 2
WINDOW 3 24 8 Left 2
SYMATTR InstName C3
SYMATTR Value 20u
SYMATTR SpiceLine Rser=50m
SYMBOL cap -48 464 R180
WINDOW 0 24 56 Left 2
WINDOW 3 24 8 Left 2
SYMATTR InstName C5
SYMATTR Value 20u
SYMATTR SpiceLine Rser=50m
SYMBOL cap 304 224 R0
SYMATTR InstName C6
SYMATTR Value 1u
SYMATTR SpiceLine Rser=50m
SYMBOL ind -592 32 R270
WINDOW 0 37 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L3
SYMATTR Value 20u
SYMATTR SpiceLine Rser=10m
SYMBOL ind 272 144 R270
WINDOW 0 37 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L4
SYMATTR Value 1m
SYMATTR SpiceLine Rser=10m
TEXT -32 392 Left 2 !K1 L1 L2 0.995
TEXT -624 488 Left 2 !.tran 200m startup
TEXT 0 32 Left 2 ;Primary 2x8 turns 2V/turn at 600 Hz
TEXT 48 64 Left 2 ;Secondary 100 turns
TEXT 24 424 Left 2 ;12.6:1
TEXT 0 456 Left 2 ;25% or 75% Duty Cycle => 373V 81%
TEXT 0 544 Left 2 ;50% Duty Cycle => 276V 92%, \nwith 100 uH => 292V 93%\n1000uH => 292.5V 93.5%
TEXT 0 504 Left 2 ;10% Duty Cycle => 208V, 137V w/100u
TEXT -32 656 Left 2 ;12.5% Duty Cycle => 103V w/1mH, 93%