Version 4
SHEET 1 2264 772
WIRE 1520 -192 -32 -192
WIRE 688 -160 144 -160
WIRE -192 -128 -320 -128
WIRE 384 -128 -192 -128
WIRE 1104 -128 384 -128
WIRE -320 -112 -320 -128
WIRE 384 -112 384 -128
WIRE 144 -48 144 -160
WIRE -32 -32 -32 -192
WIRE -320 -16 -320 -32
WIRE -192 -16 -192 -128
WIRE 288 -16 256 -16
WIRE 384 -16 384 -32
WIRE 384 -16 352 -16
WIRE 1104 0 1104 -128
WIRE 1104 0 800 0
WIRE 1360 0 1104 0
WIRE 800 16 800 0
WIRE 1360 16 1360 0
WIRE 752 32 656 32
WIRE 1488 32 1408 32
WIRE 384 48 384 -16
WIRE 752 80 736 80
WIRE 1424 80 1408 80
WIRE 48 112 16 112
WIRE 144 112 144 32
WIRE 144 112 128 112
WIRE 192 112 144 112
WIRE 656 112 656 32
WIRE 656 112 576 112
WIRE 688 112 688 -160
WIRE 800 112 800 96
WIRE 800 112 688 112
WIRE 928 112 800 112
WIRE 1024 112 928 112
WIRE 1152 112 1104 112
WIRE 1360 112 1360 96
WIRE 1360 112 1152 112
WIRE 1520 112 1520 -192
WIRE 1520 112 1360 112
WIRE 800 128 800 112
WIRE 928 128 928 112
WIRE 1152 128 1152 112
WIRE 1360 128 1360 112
WIRE 752 144 688 144
WIRE 1456 144 1408 144
WIRE -128 176 -160 176
WIRE -32 176 -32 48
WIRE -32 176 -48 176
WIRE 192 176 -32 176
WIRE 688 176 688 144
WIRE 688 176 576 176
WIRE 752 192 736 192
WIRE 1424 192 1408 192
WIRE 800 224 800 208
WIRE 1120 224 800 224
WIRE 1360 224 1360 208
WIRE 1360 224 1120 224
WIRE -288 240 -320 240
WIRE -192 240 -192 64
WIRE -192 240 -208 240
WIRE 192 240 -192 240
WIRE 608 240 576 240
WIRE 624 240 608 240
WIRE 704 240 688 240
WIRE 1120 240 1120 224
WIRE 192 304 160 304
WIRE 608 304 608 240
WIRE 608 304 576 304
WIRE 704 304 608 304
WIRE 800 304 800 224
WIRE 800 304 784 304
WIRE 1120 336 1120 320
WIRE 1632 336 1632 320
WIRE 1584 352 1568 352
WIRE 80 368 48 368
WIRE 192 368 160 368
WIRE 1456 368 1456 144
WIRE 1456 368 576 368
WIRE 1584 400 1536 400
WIRE 1488 432 1488 32
WIRE 1488 432 576 432
WIRE 1632 432 1632 416
WIRE 1744 432 1632 432
WIRE 1824 432 1744 432
WIRE 1936 432 1904 432
WIRE 1984 432 1936 432
WIRE 2096 432 1984 432
WIRE 1744 448 1744 432
WIRE 1984 448 1984 432
WIRE 2096 448 2096 432
WIRE 1632 464 1632 432
WIRE -32 496 -64 496
WIRE 64 496 32 496
WIRE 192 496 144 496
WIRE 1536 496 1536 400
WIRE 1536 496 576 496
WIRE 1744 528 1744 512
WIRE 1984 544 1984 512
WIRE 2096 544 2096 528
WIRE -160 560 -176 560
WIRE -64 560 -64 496
WIRE -64 560 -80 560
WIRE 192 560 -64 560
WIRE 1536 560 576 560
WIRE 1632 576 1632 544
WIRE 1744 576 1632 576
WIRE 1824 576 1744 576
WIRE 1936 576 1936 432
WIRE 1936 576 1904 576
WIRE 1744 592 1744 576
WIRE 1632 608 1632 576
WIRE 1584 624 1568 624
WIRE 272 640 272 624
WIRE 384 640 384 624
WIRE 496 640 496 624
WIRE 1936 640 1936 576
WIRE 1536 672 1536 560
WIRE 1584 672 1536 672
WIRE 1744 672 1744 656
WIRE 1632 704 1632 688
WIRE 272 720 272 704
WIRE 384 720 384 704
WIRE -64 768 -64 560
WIRE 1936 768 1936 720
WIRE 1936 768 -64 768
FLAG 736 80 0
FLAG 736 192 0
FLAG 1424 192 0
FLAG 1424 80 0
FLAG 1120 336 0
FLAG -320 240 0
FLAG -320 -16 0
FLAG 272 720 0
FLAG 384 720 0
FLAG 496 640 0
FLAG 48 368 0
FLAG -160 176 0
FLAG 16 112 0
FLAG 1984 544 0
FLAG -176 560 0
FLAG 1568 352 0
FLAG 1568 624 0
FLAG 1632 704 0
FLAG 1632 320 0
FLAG 2096 544 0
FLAG 256 -16 0
FLAG 704 240 0
FLAG 2096 432 OUT
FLAG 1744 672 0
FLAG 1744 528 0
FLAG 1152 192 0
FLAG 928 192 0
FLAG -320 -128 IN
SYMBOL POWERPRODUCTS\\LTC1922-1 384 336 R0
SYMATTR InstName U1
SYMBOL RES 176 352 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 10K
SYMBOL SW 800 112 M180
WINDOW 0 36 84 Left 2
WINDOW 3 32 28 Left 2
SYMATTR InstName S1
SYMBOL sw 800 224 M180
WINDOW 0 36 84 Left 2
WINDOW 3 32 28 Left 2
SYMATTR InstName S2
SYMBOL sw 1360 112 R180
WINDOW 0 36 84 Left 2
WINDOW 3 32 28 Left 2
SYMATTR InstName S3
SYMBOL sw 1360 224 R180
WINDOW 0 36 84 Left 2
WINDOW 3 32 28 Left 2
SYMATTR InstName S4
SYMBOL res 368 -128 R0
SYMATTR InstName R2
SYMATTR Value 1K
SYMBOL res 1104 224 R0
SYMATTR InstName R3
SYMATTR Value 100m
SYMBOL ind2 1008 128 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 4 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 1m
SYMBOL VOLTAGE -320 -128 R0
SYMATTR InstName V1
SYMATTR Value 48
SYMBOL res -208 -32 R0
SYMATTR InstName R4
SYMATTR Value 310K
SYMBOL res -192 224 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 10K
SYMBOL RES 160 480 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 5K
SYMBOL cap 256 640 R0
SYMATTR InstName C1
SYMATTR Value 1p
SYMBOL cap 368 640 R0
SYMATTR InstName C2
SYMATTR Value 152p
SYMBOL res -48 -48 R0
SYMATTR InstName R7
SYMATTR Value 28K
SYMBOL res -32 160 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R8
SYMATTR Value 1K
SYMBOL res 128 -64 R0
SYMATTR InstName R9
SYMATTR Value 28K
SYMBOL res 144 96 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R10
SYMATTR Value 1K
SYMBOL ind2 1616 448 R0
SYMATTR InstName L2
SYMATTR Value .2m
SYMBOL ind 1808 448 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L3
SYMATTR Value 2.4µ
SYMBOL sw 1632 704 M180
WINDOW 0 28 96 Left 2
WINDOW 3 32 28 Left 2
SYMATTR InstName S5
SYMATTR Value SR
SYMBOL ind 1808 592 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L4
SYMATTR Value 2.4µ
SYMBOL cap 1968 448 R0
SYMATTR Value 100µ
SYMATTR SpiceLine Rser=50m
SYMATTR InstName C3
SYMBOL res 1920 624 R0
SYMATTR InstName R11
SYMATTR Value 3.15K
SYMBOL res -64 544 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R12
SYMATTR Value 1K
SYMBOL sw 1632 432 M180
WINDOW 0 28 96 Left 2
WINDOW 3 32 28 Left 2
SYMATTR InstName S6
SYMATTR Value SR
SYMBOL cap 352 -32 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C4
SYMATTR Value 100µ
SYMBOL res 800 288 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R13
SYMATTR Value 510
SYMBOL cap 688 224 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C5
SYMATTR Value 100p
SYMBOL cap 32 480 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C6
SYMATTR Value 1000p
SYMBOL diode 1728 656 M180
WINDOW 0 25 65 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D1
SYMATTR Value DD
SYMBOL diode 1728 512 M180
WINDOW 0 24 58 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D2
SYMATTR Value DD
SYMBOL cap 912 128 R0
WINDOW 3 38 48 Left 2
SYMATTR Value 2000p
SYMATTR InstName C7
SYMBOL cap 1136 128 R0
WINDOW 3 34 52 Left 2
SYMATTR Value 2000p
SYMATTR InstName C8
SYMBOL res 2080 432 R0
SYMATTR InstName Rload
SYMATTR Value 5
TEXT 1176 -72 Left 2 !K1 L1 L2 .99
TEXT 664 624 Left 2 !.tran .5m\n.model DD D(Ron=1 Roff=10Meg)\n.model SW SW(Ron=.1 Roff=10Meg Vt=5 Vh=-3)\n.model SR SW(Ron=.01 Roff=10Meg Vt=-5 Vh=-3)