Version 4
SHEET 1 1380 680
WIRE 0 -112 -112 -112
WIRE 192 -112 0 -112
WIRE 352 -112 192 -112
WIRE 560 -112 352 -112
WIRE 944 -112 640 -112
WIRE 1056 -112 944 -112
WIRE -112 -96 -112 -112
WIRE 352 -96 352 -112
WIRE 560 -96 560 -112
WIRE 640 -96 640 -112
WIRE 944 -96 944 -112
WIRE 1056 -96 1056 -112
WIRE 0 -80 0 -112
WIRE -112 0 -112 -16
WIRE 352 0 352 -32
WIRE 560 0 560 -16
WIRE 560 0 352 0
WIRE 944 0 944 -32
WIRE 1056 0 1056 -16
WIRE 192 32 192 -112
WIRE 640 48 640 -16
WIRE 720 48 640 48
WIRE 800 48 784 48
WIRE 912 48 880 48
WIRE 960 48 912 48
WIRE 912 64 912 48
WIRE -112 96 -160 96
WIRE 0 96 0 0
WIRE 0 96 -32 96
WIRE 32 96 0 96
WIRE 432 96 352 96
WIRE 560 96 560 0
WIRE 560 96 512 96
WIRE 960 112 960 48
WIRE 976 112 960 112
WIRE 1264 112 1232 112
WIRE 1264 128 1264 112
WIRE 912 144 912 128
WIRE -64 176 -160 176
WIRE 32 176 16 176
WIRE 368 176 352 176
WIRE 464 176 448 176
WIRE 560 176 560 96
WIRE 640 208 640 48
WIRE 768 208 640 208
WIRE 976 208 848 208
WIRE 1264 208 1264 192
WIRE 640 224 640 208
WIRE -144 256 -160 256
WIRE -48 256 -64 256
WIRE 32 256 16 256
WIRE 512 256 352 256
WIRE 976 304 688 304
WIRE 1264 304 1232 304
WIRE -48 336 -64 336
WIRE 32 336 16 336
WIRE 560 336 560 272
WIRE 560 336 352 336
WIRE 560 352 560 336
WIRE 640 352 640 320
WIRE 128 416 128 400
WIRE 256 416 256 400
WIRE 560 448 560 432
WIRE 256 496 256 480
FLAG -64 336 0
FLAG -160 256 0
FLAG -160 176 0
FLAG -112 0 0
FLAG 256 496 0
FLAG 464 176 0
FLAG 944 0 0
FLAG 640 352 0
FLAG 1056 0 0
FLAG -112 -112 IN
FLAG 1056 -112 OUT
FLAG -160 96 0
FLAG 128 416 0
FLAG 560 448 0
FLAG 912 144 0
FLAG 1264 208 0
FLAG 1264 304 0
SYMBOL res 32 160 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 30.9K
SYMBOL voltage -112 -112 R0
SYMATTR InstName V1
SYMATTR Value 48
SYMBOL cap 16 240 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 1500p
SYMBOL cap 240 480 M180
WINDOW 0 24 64 Left 2
WINDOW 3 24 8 Left 2
SYMATTR InstName C2
SYMATTR Value 4.7µ
SYMBOL res 528 80 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 147K
SYMBOL res 464 160 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 6.04K
SYMBOL ind2 544 -112 R0
WINDOW 0 0 37 Right 2
WINDOW 3 0 72 Right 2
SYMATTR InstName L1
SYMATTR Value 28.5µ
SYMATTR Type ind
SYMATTR SpiceLine Rser=39m Rpar=5K
SYMBOL ind2 656 0 R180
WINDOW 0 -2 72 Right 2
WINDOW 3 1 44 Right 2
SYMATTR InstName L2
SYMATTR Value 1µ
SYMATTR Type ind
SYMATTR SpiceLine Rser=3.5m Rpar=5K
SYMBOL cap 928 -96 R0
SYMATTR InstName C3
SYMATTR Value 400µ
SYMBOL res -48 240 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 12.1K
SYMBOL cap -48 320 M90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C4
SYMATTR Value .005µ
SYMBOL res -16 -96 R0
SYMATTR InstName R6
SYMATTR Value 412K
SYMBOL res -16 80 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R7
SYMATTR Value 15.4K
SYMBOL res 1040 -112 R0
SYMATTR InstName Rload
SYMATTR Value .625
SYMBOL PowerProducts\\LT3748 192 208 R0
SYMATTR InstName U1
SYMBOL nmos 512 176 R0
WINDOW 3 41 106 Right 2
WINDOW 0 41 -13 Right 2
SYMATTR Value BSC320N20NS3
SYMATTR InstName M1
SYMBOL res 544 336 R0
SYMATTR InstName R1
SYMATTR Value 12m
SYMBOL PowerProducts\\LT8309 1104 208 R0
SYMATTR InstName U2
SYMBOL nmos 688 224 M0
WINDOW 0 44 -35 Right 2
WINDOW 3 28 104 Right 2
SYMATTR InstName M2
SYMATTR Value BSC028N06LS3
SYMBOL res 864 192 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R8
SYMATTR Value 2.3K
SYMBOL schottky 720 64 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 -1 10 VBottom 2
SYMATTR InstName D1
SYMATTR Value PMEG6010AED
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res 896 32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R9
SYMATTR Value 10
SYMBOL cap 896 64 R0
SYMATTR InstName C5
SYMATTR Value 1µ
SYMBOL cap 1248 128 R0
SYMATTR InstName C6
SYMATTR Value 4.7µ
SYMBOL cap 336 -96 R0
WINDOW 39 24 64 Left 2
WINDOW 3 38 38 Left 2
SYMATTR SpiceLine Rser=60
SYMATTR Value 100p
SYMATTR InstName C7
TEXT 552 -112 Bottom 2 !K1 L1 L2 1
TEXT 896 408 Left 2 !.tran 2m startup