Version 4 SHEET 1 1148 680 WIRE 800 -336 -112 -336 WIRE -992 -320 -1072 -320 WIRE -912 -320 -992 -320 WIRE -720 -320 -912 -320 WIRE -496 -320 -576 -320 WIRE -480 -320 -496 -320 WIRE -272 -320 -400 -320 WIRE -176 -320 -272 -320 WIRE -64 -320 -176 -320 WIRE 64 -320 -64 -320 WIRE 208 -320 64 -320 WIRE -1072 -304 -1072 -320 WIRE -272 -304 -272 -320 WIRE -176 -304 -176 -320 WIRE -64 -304 -64 -320 WIRE -992 -288 -992 -320 WIRE -912 -288 -912 -320 WIRE -496 -288 -496 -320 WIRE 208 -256 208 -320 WIRE -720 -240 -720 -320 WIRE -176 -224 -176 -240 WIRE -64 -224 -64 -240 WIRE -1072 -192 -1072 -224 WIRE -992 -192 -992 -224 WIRE -496 -192 -496 -224 WIRE -272 -192 -272 -224 WIRE 80 -192 -16 -192 WIRE 416 -192 336 -192 WIRE 512 -192 416 -192 WIRE 592 -192 512 -192 WIRE 704 -192 592 -192 WIRE 800 -192 800 -336 WIRE 800 -192 784 -192 WIRE 592 -176 592 -192 WIRE -912 -160 -912 -208 WIRE -848 -160 -912 -160 WIRE -576 -160 -576 -320 WIRE -576 -160 -592 -160 WIRE 416 -160 416 -192 WIRE 512 -160 512 -192 WIRE -112 -144 -112 -336 WIRE -112 -144 -128 -144 WIRE -912 -128 -912 -160 WIRE -272 -96 -592 -96 WIRE 80 -96 32 -96 WIRE 352 -96 336 -96 WIRE 592 -80 592 -112 WIRE 416 -64 416 -80 WIRE 512 -64 512 -80 WIRE 512 -64 416 -64 WIRE -272 -48 -272 -96 WIRE 416 -48 416 -64 WIRE 592 -48 544 -48 WIRE 704 -48 592 -48 WIRE 800 -48 800 -192 WIRE 800 -48 784 -48 WIRE 880 -48 800 -48 WIRE -560 -32 -592 -32 WIRE -464 -32 -480 -32 WIRE -464 -16 -464 -32 WIRE 592 -16 592 -48 WIRE 208 0 208 -32 WIRE 368 0 208 0 WIRE 64 16 64 -320 WIRE 64 16 -64 16 WIRE 208 16 64 16 WIRE 800 16 800 -48 WIRE 880 16 880 -48 WIRE 208 32 208 16 WIRE 352 48 352 -96 WIRE 416 48 416 32 WIRE 416 48 352 48 WIRE -912 80 -912 -48 WIRE -720 80 -720 48 WIRE -464 80 -464 48 WIRE -272 80 -272 32 WIRE 592 80 592 48 WIRE -64 96 -64 80 WIRE -16 96 -16 -192 WIRE 80 96 -16 96 WIRE 544 96 544 -48 WIRE 544 96 336 96 WIRE 800 160 800 80 WIRE 880 160 880 96 WIRE -256 192 -336 192 WIRE -176 192 -256 192 WIRE 32 192 32 -96 WIRE 80 192 32 192 WIRE 352 192 352 48 WIRE 352 192 336 192 WIRE -544 240 -624 240 WIRE -624 256 -624 240 WIRE -368 256 -400 256 WIRE -400 272 -400 256 WIRE -256 272 -256 256 WIRE -176 272 -176 256 WIRE 208 272 208 256 WIRE 368 272 368 0 WIRE 368 272 208 272 WIRE -368 304 -368 256 WIRE -16 304 -16 176 WIRE 32 304 32 272 WIRE -400 320 -448 320 WIRE -544 336 -544 240 WIRE -256 336 -336 336 WIRE 208 336 208 272 WIRE 208 336 -256 336 WIRE -400 352 -416 352 WIRE -256 352 -256 336 WIRE -624 368 -624 336 WIRE -368 384 -368 368 WIRE -544 432 -544 416 WIRE -448 432 -448 320 WIRE -448 432 -544 432 WIRE -544 448 -544 432 WIRE -448 448 -448 432 WIRE -416 448 -416 352 WIRE -256 448 -256 432 WIRE -256 448 -416 448 WIRE -544 544 -544 528 WIRE -448 544 -448 528 WIRE -256 544 -256 528 FLAG 880 160 0 FLAG -1072 -192 0 FLAG -992 -192 0 FLAG 32 304 0 FLAG -16 304 0 FLAG 800 160 0 FLAG -912 80 0 FLAG -720 80 0 FLAG -464 80 0 FLAG -496 -192 0 FLAG -64 -224 0 FLAG -272 80 0 FLAG 592 80 0 FLAG 592 -80 0 FLAG 800 -336 Vout FLAG -272 -320 Vout_sw FLAG -720 -320 Vin FLAG -64 96 0 FLAG -176 -224 0 FLAG -448 544 0 FLAG -544 544 0 FLAG -176 272 0 FLAG -256 272 0 FLAG -336 192 Vin FLAG -400 272 0 FLAG -256 544 0 FLAG -368 384 Vin FLAG -624 368 0 SYMBOL PowerProducts\\LT3081 208 144 R0 SYMATTR InstName U2 SYMBOL cap 784 16 R0 SYMATTR InstName C1 SYMATTR Value 1µ SYMBOL res -32 80 R0 SYMATTR InstName R1 SYMATTR Value 10k SYMBOL voltage -1072 -320 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V1 SYMATTR Value 45 SYMBOL res 16 176 R0 SYMATTR InstName R2 SYMATTR Value 1k SYMBOL current 880 16 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName I1 SYMATTR Value 3 SYMBOL PowerProducts\\LT3081 208 -144 R0 SYMATTR InstName U1 SYMBOL res 800 -64 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R5 SYMATTR Value 10m SYMBOL res 800 -208 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R6 SYMATTR Value 10m SYMBOL PowerProducts\\LT1074HV -720 -96 R0 SYMATTR InstName U3 SYMBOL res -928 -304 R0 SYMATTR InstName R7 SYMATTR Value 10k SYMBOL res -928 -144 R0 SYMATTR InstName R8 SYMATTR Value 10k SYMBOL res -464 -48 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R9 SYMATTR Value 2k7 SYMBOL cap -480 -16 R0 SYMATTR InstName C3 SYMATTR Value 0.01µ SYMBOL schottky -480 -224 R180 WINDOW 0 24 64 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D1 SYMATTR Value MBR745 SYMATTR Description Diode SYMATTR Type diode SYMBOL ind -496 -304 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value 47µ SYMATTR SpiceLine Ipk=5 Rser=0.0301 Rpar=4427.4 Cpar=0 SYMBOL pnp -208 -96 R180 WINDOW 0 46 60 Left 2 WINDOW 3 37 36 Left 2 SYMATTR InstName Q1 SYMATTR Value BC327-40 SYMBOL res -288 -64 R0 SYMATTR InstName R10 SYMATTR Value 6k SYMBOL res -288 -320 R0 SYMATTR InstName R11 SYMATTR Value 8k SYMBOL res -112 -160 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R12 SYMATTR Value 10k SYMBOL cap -80 -304 R0 SYMATTR InstName C4 SYMATTR Value 10µ SYMBOL cap 576 -16 R0 SYMATTR InstName C5 SYMATTR Value 30µ SYMBOL cap 576 -176 R0 SYMATTR InstName C6 SYMATTR Value 30µ SYMBOL res 400 -176 R0 SYMATTR InstName R3 SYMATTR Value 2k82 SYMBOL res 496 -176 R0 SYMATTR InstName R15 SYMATTR Value 10k SYMBOL res 400 -64 R0 SYMATTR InstName R16 SYMATTR Value 100 SYMBOL cap -80 16 R0 SYMATTR InstName C7 SYMATTR Value 10µ SYMBOL polcap -192 -304 R0 SYMATTR InstName C9 SYMATTR Value 47µ SYMBOL polcap -1008 -288 R0 SYMATTR InstName C8 SYMATTR Value 470µ SYMBOL Opamps\\LT6016 -368 336 M180 SYMATTR InstName U4 SYMBOL cap -272 192 R0 SYMATTR InstName C2 SYMATTR Value 0.1µ SYMBOL cap -192 192 R0 SYMATTR InstName C10 SYMATTR Value 10µ SYMBOL res -560 320 R0 SYMATTR InstName R13 SYMATTR Value 1 SYMBOL res -560 432 R0 SYMATTR InstName R14 SYMATTR Value 10k SYMBOL res -464 432 R0 SYMATTR InstName R17 SYMATTR Value 1000000 SYMBOL res -272 336 R0 SYMATTR InstName R18 SYMATTR Value 5k8 SYMBOL res -272 432 R0 SYMATTR InstName R19 SYMATTR Value 1k SYMBOL voltage -624 240 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V2 SYMATTR Value 5 TEXT -1056 168 Left 2 !.tran 10ms TEXT 408 264 Left 2 ;R15: bourns 3509S-2-103L (10k, 10turn)\nR13/R14: bourns 3509S-2-103L (10k, 10turn)\n \nR5/6: PCB trace??\n \nC5/C6: je 3*10µ CER parallel