Version 4 SHEET 1 1536 680 WIRE -176 -128 -272 -128 WIRE 208 -128 -176 -128 WIRE 688 -128 208 -128 WIRE 1008 -128 880 -128 WIRE 1024 -128 1008 -128 WIRE 1136 -128 1104 -128 WIRE 1184 -128 1136 -128 WIRE 1280 -128 1184 -128 WIRE -272 -112 -272 -128 WIRE -176 -112 -176 -128 WIRE 688 -112 688 -128 WIRE 768 -112 688 -112 WIRE 880 -112 880 -128 WIRE 880 -112 816 -112 WIRE 1184 -112 1184 -128 WIRE 1280 -112 1280 -128 WIRE 768 -96 768 -112 WIRE 816 -96 816 -112 WIRE 208 -80 208 -128 WIRE 1008 -80 1008 -128 WIRE -272 -16 -272 -32 WIRE -176 -16 -176 -32 WIRE 48 -16 -176 -16 WIRE 416 -16 368 -16 WIRE 512 -16 416 -16 WIRE 544 -16 512 -16 WIRE 1184 -16 1184 -48 WIRE 1280 -16 1280 -32 WIRE -176 0 -176 -16 WIRE 544 0 544 -16 WIRE 768 0 768 -16 WIRE 768 0 688 0 WIRE 816 0 816 -16 WIRE 880 0 816 0 WIRE 880 32 880 0 WIRE 912 32 880 32 WIRE 1008 32 1008 -16 WIRE 1008 32 976 32 WIRE 1008 48 1008 32 WIRE 48 80 -176 80 WIRE 416 80 416 64 WIRE 416 80 368 80 WIRE 544 80 544 64 WIRE 688 80 688 0 WIRE 768 80 688 80 WIRE -176 96 -176 80 WIRE 688 96 688 80 WIRE 768 96 768 80 WIRE -48 176 -64 176 WIRE 48 176 16 176 WIRE 640 176 368 176 WIRE 768 176 768 160 WIRE -176 192 -176 176 WIRE -48 272 -64 272 WIRE 48 272 32 272 WIRE 688 272 688 192 WIRE 688 272 368 272 WIRE 688 288 688 272 WIRE 512 320 512 -16 WIRE -48 368 -64 368 WIRE 48 368 16 368 WIRE 432 368 368 368 WIRE 688 384 688 368 WIRE 512 432 512 400 WIRE 560 432 512 432 WIRE 816 432 752 432 WIRE 1136 432 1136 -128 WIRE 1136 432 880 432 WIRE 48 464 32 464 WIRE 400 464 368 464 WIRE 432 496 432 368 WIRE 496 496 432 496 WIRE 560 496 496 496 WIRE 496 512 496 496 WIRE 768 528 752 528 WIRE 864 528 848 528 WIRE 208 544 208 528 WIRE 32 576 32 464 WIRE 304 576 32 576 WIRE 432 576 432 496 WIRE 432 576 384 576 WIRE 496 608 496 592 FLAG 208 544 0 FLAG -176 192 0 FLAG -64 176 0 FLAG -64 272 0 FLAG -64 368 0 FLAG -272 -16 0 FLAG 544 80 0 FLAG 688 384 0 FLAG 768 176 0 FLAG 1008 48 0 FLAG 1184 -16 0 FLAG 1280 -16 0 FLAG -272 -128 IN FLAG 1280 -128 OUT FLAG 496 608 0 FLAG 864 528 0 SYMBOL PowerProducts\\LT8310 208 224 R0 SYMATTR InstName U1 SYMBOL voltage -272 -128 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value 36 SYMBOL res -192 -128 R0 SYMATTR InstName R1 SYMATTR Value 280K SYMBOL res -192 -16 R0 SYMATTR InstName R2 SYMATTR Value 30.9K SYMBOL res -192 80 R0 SYMATTR InstName R3 SYMATTR Value 6.65K SYMBOL cap 16 160 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C1 SYMATTR Value 6.8n SYMATTR SpiceLine Rser=50m SYMBOL res 48 256 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R4 SYMATTR Value 40.2K SYMBOL cap 16 352 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C2 SYMATTR Value 100n SYMBOL res 400 -32 R0 SYMATTR InstName R5 SYMATTR Value 105K SYMBOL cap 528 0 R0 SYMATTR InstName C3 SYMATTR Value 4.7µ SYMBOL ind2 752 -112 R0 WINDOW 3 4 71 Right 2 WINDOW 0 2 35 Right 2 SYMATTR Value 420µ SYMATTR InstName L1 SYMATTR Type ind SYMATTR SpiceLine Rser=65mm SYMBOL ind2 832 -112 M0 WINDOW 3 1 82 Right 2 WINDOW 0 4 33 Right 2 SYMATTR Value 115µ SYMATTR InstName L2 SYMATTR Type ind SYMATTR SpiceLine Rser=15m SYMBOL nmos 640 96 R0 WINDOW 3 56 118 Left 2 SYMATTR Value BSC077N12NS3 SYMATTR InstName Q1 SYMBOL res 672 272 R0 SYMATTR InstName R6 SYMATTR Value 20m SYMBOL cap 752 96 R0 SYMATTR InstName C4 SYMATTR Value 1000p SYMBOL schottky 976 16 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName D1 SYMATTR Value B530C SYMATTR Description Diode SYMATTR Type diode SYMBOL schottky 992 -16 M180 WINDOW 0 24 64 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D2 SYMATTR Value B530C SYMATTR Description Diode SYMATTR Type diode SYMBOL cap 1168 -112 R0 WINDOW 123 28 61 Left 2 WINDOW 3 38 32 Left 2 SYMATTR Value2 x4 SYMATTR Value 33µ SYMATTR InstName C5 SYMATTR SpiceLine Rser=20m SYMBOL ind 1008 -112 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L3 SYMATTR Value 33µ SYMATTR SpiceLine Rser=10m SYMBOL Optos\\MOC207 656 496 M0 SYMATTR InstName U2 SYMBOL res 496 304 R0 SYMATTR InstName R7 SYMATTR Value 2K SYMBOL res 480 496 R0 SYMATTR InstName R8 SYMATTR Value 665 SYMBOL res 752 544 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R9 SYMATTR Value 100 SYMBOL res 288 592 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R10 SYMATTR Value 255K SYMBOL zener 816 448 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D3 SYMATTR Value BZX84C12L SYMATTR Description Diode SYMATTR Type diode SYMBOL res 1264 -128 R0 SYMATTR InstName Rload SYMATTR Value 4 TEXT 800 -120 Bottom 2 !K1 L1 L2 1 TEXT 936 512 Left 2 !.tran 7m startup