Version 4 SHEET 1 2020 984 WIRE 560 288 512 288 WIRE 672 288 640 288 WIRE 720 288 672 288 WIRE 816 288 784 288 WIRE 672 352 672 288 WIRE 816 400 816 288 WIRE 976 400 816 400 WIRE 1200 400 976 400 WIRE 1344 400 1200 400 WIRE 1488 400 1344 400 WIRE 1600 400 1488 400 WIRE 1200 416 1200 400 WIRE 1344 416 1344 400 WIRE 1488 416 1488 400 WIRE 976 432 976 400 WIRE 1600 432 1600 400 WIRE 288 448 160 448 WIRE 512 448 288 448 WIRE 560 448 512 448 WIRE 672 448 672 416 WIRE 672 448 640 448 WIRE 160 480 160 448 WIRE 288 496 288 448 WIRE 816 512 816 400 WIRE 1200 528 1200 480 WIRE 1344 528 1344 480 WIRE 1488 528 1488 496 WIRE 1600 528 1600 496 WIRE 976 544 976 496 WIRE 1072 544 976 544 WIRE 512 560 512 448 WIRE 672 560 672 448 WIRE 976 576 976 544 WIRE 1072 576 1072 544 WIRE 160 592 160 560 WIRE 288 592 288 560 WIRE 224 656 160 656 WIRE 368 656 304 656 WIRE 432 656 368 656 WIRE 816 656 816 592 WIRE 816 656 752 656 WIRE 976 656 976 640 WIRE 976 656 816 656 WIRE 368 672 368 656 WIRE 976 672 976 656 WIRE 1072 672 1072 640 WIRE 160 704 160 656 WIRE 816 704 816 656 WIRE 976 752 976 736 WIRE 368 768 368 736 WIRE 592 768 592 752 WIRE 160 816 160 784 WIRE 816 848 816 784 WIRE 976 848 976 832 FLAG 1488 400 OUT FLAG 816 848 0 FLAG 1344 528 0 FLAG 1488 528 0 FLAG 592 768 0 FLAG 160 592 0 FLAG 288 592 0 FLAG 368 768 0 FLAG 160 816 0 FLAG 160 448 IN FLAG 512 288 0 FLAG 976 848 0 FLAG 1072 672 0 FLAG 1600 528 0 FLAG 1200 528 0 SYMBOL VOLTAGE 160 464 R0 WINDOW 0 11 10 Left 2 WINDOW 3 11 105 Left 2 SYMATTR InstName V1 SYMATTR Value 3 SYMBOL RES 800 496 R0 SYMATTR InstName R1 SYMATTR Value 30k SYMBOL RES 800 688 R0 SYMATTR InstName R2 SYMATTR Value 10K SYMBOL IND 544 464 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value 10µ SYMATTR SpiceLine Rser=0.182 SYMBOL schottky 720 304 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D1 SYMATTR Value MBRS340 SYMBOL POLCAP 1328 416 R0 WINDOW 39 24 85 Left 2 SYMATTR InstName C1 SYMATTR Value 47µ SYMATTR SpiceLine Rser=.05 SYMBOL POLCAP 272 496 R0 SYMATTR InstName C2 SYMATTR Value 2.2µ SYMBOL PowerProducts\\LT1935 592 656 R0 SYMATTR InstName U1 SYMBOL res 320 640 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R3 SYMATTR Value 10K SYMBOL cap 352 672 R0 SYMATTR InstName C3 SYMATTR Value .22µ SYMBOL VOLTAGE 160 688 R0 WINDOW 0 9 9 Left 2 WINDOW 3 7 102 Left 2 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V2 SYMATTR Value PWL(0 0 1m 3) SYMBOL res 1472 400 R0 SYMATTR InstName Rload SYMATTR Value 100 SYMBOL ind 544 304 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L2 SYMATTR Value 10µ SYMATTR SpiceLine Rser=0.182 SYMBOL cap 656 352 R0 SYMATTR InstName C4 SYMATTR Value 4.7µ SYMBOL res 960 736 R0 SYMATTR InstName R4 SYMATTR Value 10k SYMBOL cap 960 672 R0 SYMATTR InstName C5 SYMATTR Value 10n SYMBOL diode 960 576 R0 SYMATTR InstName D2 SYMATTR Value 1N4148 SYMBOL cap 960 432 R0 SYMATTR InstName C6 SYMATTR Value 10n SYMBOL diode 1056 640 M180 WINDOW 0 24 64 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D3 SYMATTR Value 1N4148 SYMBOL load 1584 432 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName I1 SYMATTR Value PULSE(0 .45 4m 1u 1u 2m 4m) SYMBOL cap 1184 416 R0 WINDOW 39 24 84 Left 2 SYMATTR InstName C7 SYMATTR Value 1µ SYMATTR SpiceLine Rser=0.01 TEXT 144 272 Left 2 !.tran 0 7m 0 .1u startup TEXT 888 336 Left 2 ;optional if 10u instead 5u inductors TEXT 528 392 Left 2 ;Imax < 2A TEXT 536 232 Left 2 ;Imax < 1A RECTANGLE Normal 1120 880 928 368 2