Version 4
SHEET 1 2360 1136
WIRE 224 64 128 64
WIRE 592 64 224 64
WIRE 640 64 592 64
WIRE 816 64 640 64
WIRE 880 64 816 64
WIRE 128 80 128 64
WIRE 880 96 880 64
WIRE 224 128 224 64
WIRE 256 128 224 128
WIRE 640 128 544 128
WIRE 672 128 640 128
WIRE 752 128 736 128
WIRE 128 176 128 160
WIRE 256 176 240 176
WIRE 832 176 544 176
WIRE 256 224 240 224
WIRE 752 224 752 128
WIRE 752 224 544 224
WIRE 880 224 880 192
WIRE 880 224 752 224
WIRE 976 224 880 224
WIRE 1136 224 1024 224
WIRE 1168 224 1136 224
WIRE 1280 224 1248 224
WIRE 1776 224 1280 224
WIRE 1840 224 1776 224
WIRE 2208 224 1840 224
WIRE 976 240 976 224
WIRE 1024 240 1024 224
WIRE 1280 240 1280 224
WIRE 2208 240 2208 224
WIRE 816 256 816 64
WIRE 1648 256 1504 256
WIRE 1776 256 1776 224
WIRE 256 272 240 272
WIRE 1504 272 1504 256
WIRE 1840 288 1840 224
WIRE 1856 288 1840 288
WIRE 1952 288 1936 288
WIRE 1984 288 1952 288
WIRE 2096 288 2064 288
WIRE 256 320 -64 320
WIRE 1136 320 1136 224
WIRE 816 336 816 320
WIRE 976 336 976 320
WIRE 976 336 816 336
WIRE 2208 336 2208 320
WIRE 1280 352 1280 304
WIRE 1648 352 1648 256
WIRE 1776 352 1776 336
WIRE -64 368 -64 320
WIRE -32 368 -64 368
WIRE 80 368 48 368
WIRE 256 368 80 368
WIRE 720 368 544 368
WIRE 1504 368 1504 352
WIRE 1952 368 1952 288
WIRE 2000 368 1952 368
WIRE 2096 368 2080 368
WIRE 880 384 880 224
WIRE 1024 384 1024 320
WIRE 2096 384 2096 368
WIRE 1568 400 1184 400
WIRE 1952 400 1952 368
WIRE 1952 400 1856 400
WIRE 560 416 544 416
WIRE 720 416 720 368
WIRE 768 416 720 416
WIRE 80 448 80 432
WIRE 160 464 144 464
WIRE 256 464 224 464
WIRE 592 464 592 64
WIRE 592 464 544 464
WIRE 816 464 816 432
WIRE 816 464 752 464
WIRE 880 464 880 448
WIRE 1568 464 1072 464
WIRE 1952 464 1856 464
WIRE 2096 464 2096 448
WIRE 2096 464 1952 464
WIRE 816 480 816 464
WIRE 256 512 48 512
WIRE 656 512 544 512
WIRE 1024 528 1024 480
WIRE 1136 528 1136 416
WIRE 1136 528 1024 528
WIRE 1168 528 1136 528
WIRE 1280 528 1248 528
WIRE 1568 528 1280 528
WIRE 1872 528 1856 528
WIRE 1024 544 1024 528
WIRE 1280 544 1280 528
WIRE 48 560 48 512
WIRE 64 560 48 560
WIRE 176 560 144 560
WIRE 256 560 240 560
WIRE 752 560 752 464
WIRE 752 560 544 560
WIRE 656 576 656 512
WIRE 816 576 816 560
WIRE 1568 592 1536 592
WIRE 1872 592 1856 592
WIRE 1280 624 1280 608
WIRE 48 656 48 560
WIRE 96 656 48 656
WIRE 240 656 240 560
WIRE 240 656 176 656
WIRE 560 656 544 656
WIRE 656 656 656 640
WIRE 656 656 640 656
WIRE 1568 656 656 656
WIRE 1872 656 1856 656
WIRE -64 720 -64 368
WIRE 1120 720 -64 720
WIRE 1408 720 1312 720
WIRE 1440 720 1408 720
WIRE 1536 720 1520 720
WIRE 1568 720 1536 720
WIRE 1872 720 1856 720
WIRE 48 784 48 656
WIRE 1008 784 48 784
WIRE 1120 784 1008 784
WIRE 1008 800 1008 784
WIRE 1648 800 1648 784
WIRE 1776 800 1776 784
WIRE 1344 816 1312 816
WIRE 1408 816 1408 720
WIRE 1440 816 1408 816
WIRE 1536 816 1536 720
WIRE 1536 816 1504 816
WIRE 1008 896 1008 880
FLAG 560 416 0
FLAG 816 576 0
FLAG 240 272 0
FLAG 240 224 0
FLAG 240 176 0
FLAG 144 464 0
FLAG 80 448 0
FLAG 128 176 0
FLAG 1280 352 0
FLAG 2208 336 0
FLAG 1024 624 0
FLAG 880 464 0
FLAG 1776 800 0
FLAG 1648 800 0
FLAG 544 656 0
FLAG 1504 368 0
FLAG 1536 592 0
FLAG 1280 624 0
FLAG 1872 592 0
FLAG 2096 288 0
FLAG 1344 816 0
FLAG 1008 896 0
FLAG 1872 528 0
FLAG 2208 224 OUT
FLAG 128 64 IN
SYMBOL nmos 832 96 R0
WINDOW 0 60 25 Left 0
WINDOW 3 56 67 Left 0
SYMATTR InstName Q1
SYMATTR Value IRF7303
SYMBOL nmos 768 336 R0
WINDOW 0 -1 24 Right 0
WINDOW 3 42 103 Right 0
SYMATTR InstName Q2
SYMATTR Value IRF7303
SYMBOL voltage 128 64 R0
SYMATTR InstName V1
SYMATTR Value 16
SYMBOL res 800 464 R0
SYMATTR InstName R1
SYMATTR Value 25m
SYMBOL cap 224 448 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C1
SYMATTR Value .001ľ
SYMBOL cap 240 544 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C2
SYMATTR Value 3.3n
SYMBOL res 160 544 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R2
SYMATTR Value 100
SYMBOL cap 64 368 R0
WINDOW 0 41 22 Left 0
SYMATTR InstName C3
SYMATTR Value 150p
SYMBOL res -48 384 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R3
SYMATTR Value 52.3K
SYMBOL ind2 960 224 R0
WINDOW 0 -4 31 Right 0
WINDOW 3 -6 71 Right 0
SYMATTR InstName L1
SYMATTR Value 1m
SYMATTR Type ind
SYMATTR SpiceLine Rser=10m Rpar=500
SYMBOL ind2 1040 224 M0
WINDOW 0 -4 31 Right 0
WINDOW 3 -6 71 Right 0
SYMATTR InstName L2
SYMATTR Value 1m
SYMATTR Type ind
SYMATTR SpiceLine Rser=10m Rpar=500
SYMBOL ind 1152 240 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 5 56 VBottom 0
SYMATTR InstName L3
SYMATTR Value 3ľ
SYMATTR SpiceLine Rser=10m Rpar=1K
SYMBOL cap 1264 240 R0
SYMATTR InstName C4
SYMATTR Value 500ľ
SYMATTR SpiceLine Rser=.025
SYMBOL cap 736 112 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C5
SYMATTR Value .5ľ
SYMBOL schottky 656 64 M0
WINDOW 0 15 -6 Bottom 0
WINDOW 3 19 70 Top 0
SYMATTR InstName D1
SYMATTR Value 1N5817
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL PowerProducts\\LT3781 400 336 R0
SYMATTR InstName U1
SYMBOL schottky 832 320 R180
WINDOW 0 24 72 Left 0
WINDOW 3 24 0 Left 0
SYMATTR InstName D2
SYMATTR Value 1N5818
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL schottky 864 448 M180
WINDOW 0 24 72 Left 0
WINDOW 3 24 0 Left 0
SYMATTR InstName D3
SYMATTR Value 1N5818
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL PowerProducts\\LTC1698 1712 560 R0
WINDOW 3 0 57 Center 0
SYMATTR InstName U2
SYMBOL res 1760 240 R0
SYMATTR InstName R4
SYMATTR Value 10K
SYMBOL cap 640 640 M180
WINDOW 0 24 64 Left 0
WINDOW 3 24 8 Left 0
SYMATTR InstName C6
SYMATTR Value 100p
SYMBOL res 656 640 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R5
SYMATTR Value 1K
SYMBOL voltage 1504 256 R0
SYMATTR InstName V2
SYMATTR Value 8
SYMBOL nmos 1072 384 M0
WINDOW 0 6 -8 Left 0
WINDOW 3 42 104 Right 0
SYMATTR InstName Q3
SYMATTR Value IRF7303
SYMBOL res 1008 528 R0
SYMATTR InstName R6
SYMATTR Value .25m
SYMBOL res 1152 512 M90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R7
SYMATTR Value 100
SYMBOL cap 1264 544 R0
SYMATTR InstName C7
SYMATTR Value 1000p
SYMBOL nmos 1184 320 M0
WINDOW 0 30 -6 Right 0
WINDOW 3 42 103 Right 0
SYMATTR InstName Q4
SYMATTR Value IRF7303
SYMBOL res 1840 304 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R8
SYMATTR Value 2K
SYMBOL res 2096 352 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R9
SYMATTR Value 300
SYMBOL cap 1936 400 R0
WINDOW 3 35 48 Left 0
SYMATTR Value 1000p
SYMATTR InstName C8
SYMBOL cap 2080 384 R0
SYMATTR InstName C9
SYMATTR Value .022ľ
SYMBOL res 2080 272 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R10
SYMATTR Value 1K
SYMBOL res 1536 704 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R11
SYMATTR Value 1K
SYMBOL cap 1504 800 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C10
SYMATTR Value 4.7n
SYMBOL res 992 784 R0
SYMATTR InstName R12
SYMATTR Value 1K
SYMBOL optos\\MOC207 1216 784 M0
SYMATTR InstName U3
SYMBOL res 192 640 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R13
SYMATTR Value 3K
SYMBOL res 2192 336 M180
WINDOW 0 36 76 Left 0
WINDOW 3 36 40 Left 0
SYMATTR InstName Rload
SYMATTR Value 2
TEXT 1000 216 Bottom 0 !K1 L1 L2 1.
TEXT 1976 592 Left 0 !.tran 1.6m startup