Version 4 SHEET 1 3436 1104 WIRE 96 -320 -64 -320 WIRE 608 -320 96 -320 WIRE 1472 -320 608 -320 WIRE 1744 -320 1472 -320 WIRE 1920 -320 1872 -320 WIRE 2032 -320 1984 -320 WIRE 2448 -320 2032 -320 WIRE 2544 -320 2448 -320 WIRE 2608 -320 2608 -368 WIRE 2608 -320 2544 -320 WIRE 1472 -272 1472 -320 WIRE 2032 -272 2032 -320 WIRE 1152 -256 1008 -256 WIRE 1232 -256 1152 -256 WIRE -64 -224 -64 -320 WIRE 1744 -224 1744 -320 WIRE 1872 -224 1872 -320 WIRE 96 -208 96 -320 WIRE 1152 -208 1152 -256 WIRE 1232 -208 1232 -256 WIRE 1008 -176 1008 -256 WIRE 2032 -176 2032 -208 WIRE 1472 -160 1472 -208 WIRE 2544 -160 2544 -320 WIRE 608 -144 608 -320 WIRE 608 -144 496 -144 WIRE 496 -112 496 -144 WIRE 1232 -80 1232 -128 WIRE 1312 -80 1232 -80 WIRE 1456 -80 1424 -80 WIRE -64 -64 -64 -144 WIRE 608 -64 608 -144 WIRE 784 -64 608 -64 WIRE 1744 -64 1744 -144 WIRE 1008 -48 1008 -96 WIRE 1232 -48 1232 -80 WIRE 1312 -48 1232 -48 WIRE 1456 -48 1456 -80 WIRE 1456 -48 1424 -48 WIRE 784 -16 784 -64 WIRE 1232 -16 1232 -48 WIRE 1312 -16 1232 -16 WIRE 1456 -16 1456 -48 WIRE 1456 -16 1424 -16 WIRE 1872 0 1872 -144 WIRE 1232 16 1232 -16 WIRE 1312 16 1232 16 WIRE 1456 16 1456 -16 WIRE 1456 16 1424 16 WIRE 1536 16 1456 16 WIRE 1664 16 1664 0 WIRE 1664 16 1616 16 WIRE 1696 16 1664 16 WIRE 304 32 256 32 WIRE 608 32 608 -64 WIRE 608 32 528 32 WIRE 1232 48 1232 16 WIRE 1312 48 1232 48 WIRE 1456 48 1456 16 WIRE 1456 48 1424 48 WIRE 256 64 256 32 WIRE 1232 80 1232 48 WIRE 1312 80 1232 80 WIRE 1456 80 1456 48 WIRE 1456 80 1424 80 WIRE 304 96 224 96 WIRE 688 96 528 96 WIRE 784 96 784 64 WIRE 784 96 688 96 WIRE 688 112 688 96 WIRE 1232 144 1232 80 WIRE 2192 144 2064 144 WIRE 2448 144 2448 -320 WIRE 2448 144 2192 144 WIRE 304 160 256 160 WIRE 592 160 528 160 WIRE 592 192 592 160 WIRE 688 192 688 176 WIRE 688 192 592 192 WIRE 736 192 688 192 WIRE 784 192 784 176 WIRE 784 192 736 192 WIRE 992 192 992 144 WIRE 992 192 960 192 WIRE 1040 192 992 192 WIRE 1168 192 1120 192 WIRE 1744 208 1744 32 WIRE 96 224 96 -128 WIRE 144 224 96 224 WIRE 304 224 144 224 WIRE 656 224 528 224 WIRE 2064 240 2064 144 WIRE 2192 240 2192 144 WIRE 656 272 656 224 WIRE 736 272 736 256 WIRE 2544 272 2544 -80 WIRE 1232 320 1232 240 WIRE 2448 320 2448 144 WIRE 224 336 224 96 WIRE 592 336 592 192 WIRE 592 336 224 336 WIRE 656 384 656 336 WIRE 1808 384 1664 384 WIRE 2064 384 2064 320 WIRE 2064 384 2000 384 WIRE 256 448 256 160 WIRE 960 448 960 192 WIRE 960 448 256 448 WIRE 1808 480 1776 480 WIRE 2192 480 2192 320 WIRE 2192 480 2000 480 WIRE 2192 528 2192 480 WIRE 2288 528 2192 528 WIRE 2448 528 2448 400 WIRE 2448 528 2352 528 WIRE 144 544 144 224 WIRE 1360 544 1360 512 WIRE 1360 544 144 544 WIRE 1664 544 1664 384 WIRE 1664 544 1360 544 WIRE 2192 560 2192 528 WIRE 1776 608 1776 480 WIRE 2448 608 2448 528 WIRE 2448 608 2240 608 WIRE 2448 640 2448 608 WIRE 2192 720 2192 656 WIRE 2448 720 2192 720 WIRE 2192 736 2192 720 FLAG -64 -64 0 FLAG 496 -48 0 FLAG 736 272 0 FLAG 656 384 0 FLAG 256 64 0 FLAG 1744 208 0 FLAG 1872 0 0 FLAG 2544 272 0 FLAG 2608 -368 Out FLAG 1472 -160 0 FLAG 2032 -176 0 FLAG 1664 0 Gate FLAG 2192 736 0 FLAG 1776 608 0 FLAG 1008 -48 0 FLAG 1232 320 0 FLAG 1152 -208 VDD FLAG 992 144 PWM FLAG 1360 512 Feedback SYMBOL voltage -64 -240 R0 WINDOW 123 0 0 Left 2 WINDOW 39 24 44 Left 2 SYMATTR SpiceLine Rser=0.5 SYMATTR InstName V1 SYMATTR Value 4.4 SYMBOL cap 480 -112 R0 SYMATTR InstName C1 SYMATTR Value 100nF SYMBOL res 768 80 R0 SYMATTR InstName R1 SYMATTR Value 3.3K SYMBOL cap 720 192 R0 SYMATTR InstName C2 SYMATTR Value 1nF SYMBOL res 768 -32 R0 SYMATTR InstName R2 SYMATTR Value 3.3K SYMBOL cap 640 272 R0 SYMATTR InstName C3 SYMATTR Value 10nF SYMBOL nmos 1696 -64 R0 SYMATTR InstName M1 SYMATTR Value irfru220n SYMATTR Prefix X SYMBOL ind2 1760 -128 R180 WINDOW 0 36 80 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName L1 SYMATTR Value 14µH SYMATTR Type ind SYMATTR SpiceLine Ipk=4 Rser=0.015 SYMBOL ind2 1888 -240 M0 SYMATTR InstName L2 SYMATTR Value 14µH SYMATTR Type ind SYMATTR SpiceLine Ipk=4 Rser=0.015 SYMBOL schottky 1920 -336 M90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName D2 SYMATTR Value MBRS340 SYMATTR Description Diode SYMATTR Type diode SYMBOL cap 1456 -272 R0 SYMATTR InstName C4 SYMATTR Value 47µF SYMATTR SpiceLine Rser=0.05 SYMBOL cap 2016 -272 R0 SYMATTR InstName C5 SYMATTR Value 47µF SYMATTR SpiceLine Rser=0.05 SYMBOL diode 672 112 R0 SYMATTR InstName D1 SYMATTR Value 1N4148 SYMBOL Voltage\ Regulators\\TL431 2192 608 M0 SYMATTR InstName U2 SYMBOL Optos\\PC817A 1904 432 M0 SYMATTR InstName U3 SYMBOL res 2432 304 R0 SYMATTR InstName R3 SYMATTR Value 1K SYMBOL res 2432 624 R0 SYMATTR InstName R4 SYMATTR Value 1K SYMBOL cap 2352 512 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C7 SYMATTR Value 220pF SYMBOL res 80 -224 R0 SYMATTR InstName R5 SYMATTR Value 1K SYMBOL res 2048 224 R0 SYMATTR InstName R6 SYMATTR Value 330R SYMBOL res 2176 224 R0 SYMATTR InstName R7 SYMATTR Value 1K SYMBOL Misc\\NE555 416 128 R0 SYMATTR InstName U1 SYMBOL res 2528 -176 R0 SYMATTR InstName R8 SYMATTR Value 20R SYMBOL voltage 1008 -192 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V3 SYMATTR Value 10V SYMBOL CD4000\\CD40106B 1360 -128 R0 SYMATTR InstName U4 SYMATTR SpiceLine VDD=12 SPEED=1.0 TRIPDT=5e-9 SYMBOL CD4000\\CD40106B 1360 -96 R0 SYMATTR InstName U5 SYMATTR SpiceLine VDD=12 SPEED=1.0 TRIPDT=5e-9 SYMBOL CD4000\\CD40106B 1360 -64 R0 SYMATTR InstName U6 SYMATTR SpiceLine VDD=12 SPEED=1.0 TRIPDT=5e-9 SYMBOL CD4000\\CD40106B 1360 -32 R0 SYMATTR InstName U7 SYMATTR SpiceLine VDD=12 SPEED=1.0 TRIPDT=5e-9 SYMBOL CD4000\\CD40106B 1360 0 R0 SYMATTR InstName U8 SYMATTR SpiceLine VDD=12 SPEED=1.0 TRIPDT=5e-9 SYMBOL CD4000\\CD40106B 1360 32 R0 SYMATTR InstName U9 SYMATTR SpiceLine VDD=12 SPEED=1.0 TRIPDT=5e-9 SYMBOL npn 1168 144 R0 SYMATTR InstName Q1 SYMATTR Value BC817-25 SYMBOL res 1216 -224 R0 SYMATTR InstName R10 SYMATTR Value 1K SYMBOL res 1136 176 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R11 SYMATTR Value 1K SYMBOL res 1632 0 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R12 SYMATTR Value 10R TEXT -32 616 Left 2 !.tran 0 5ms 0 1000ns startup uic TEXT 1736 -376 Left 2 !K1 L1 L2 0.98 TEXT 1304 152 Left 2 !.inc CD4000_v.lib TEXT 1776 96 Left 2 !.inc irfru220n.lib