Version 4
SHEET 1 2132 1112
WIRE -16 368 -16 112
WIRE -16 112 64 112
WIRE 144 112 288 112
WIRE 608 112 640 112
WIRE 640 112 640 272
WIRE 288 448 288 480
WIRE 288 480 240 480
WIRE -16 480 -16 448
WIRE 288 480 640 480
WIRE -16 832 -16 864
WIRE -16 864 224 864
WIRE -16 896 -16 864
WIRE 480 656 480 624
WIRE 480 624 512 624
WIRE 480 720 480 864
WIRE 416 576 448 576
WIRE 448 672 416 672
WIRE 416 672 416 576
WIRE 752 576 752 688
WIRE 752 688 512 688
WIRE 192 576 224 576
WIRE 224 576 224 752
WIRE 224 576 416 576
WIRE 112 576 80 576
WIRE 1120 576 752 576
WIRE 1024 224 1024 256
WIRE 1024 256 944 256
WIRE 1024 256 1024 368
WIRE 1024 448 1024 480
WIRE 976 384 944 384
WIRE 240 240 208 240
WIRE 240 288 240 480
WIRE 240 480 -16 480
WIRE 288 304 288 336
WIRE 640 112 736 112
WIRE 976 432 944 432
WIRE 1024 144 1024 112
WIRE 1024 112 944 112
WIRE 224 832 224 864
WIRE 224 864 416 864
WIRE 480 864 1088 864
WIRE 1056 688 1088 688
WIRE 1088 736 1088 688
WIRE 1088 688 1120 688
WIRE 944 688 976 688
WIRE 848 688 880 688
WIRE 752 688 784 688
WIRE 1088 864 1088 816
WIRE 288 336 320 336
WIRE 288 336 288 368
WIRE 1360 352 1360 480
WIRE 1360 480 1264 480
WIRE 1264 304 1360 304
WIRE 1440 352 1440 432
WIRE 1264 448 1264 480
WIRE 1232 304 1264 304
WIRE 1760 208 1792 208
WIRE 1696 240 1664 240
WIRE 1696 224 1664 224
WIRE 1664 224 1664 208
WIRE 1664 112 1792 112
WIRE 1696 208 1664 208
WIRE 1664 208 1664 192
WIRE 1696 192 1664 192
WIRE 1664 192 1664 112
WIRE 1712 256 1712 480
WIRE 1712 480 1360 480
WIRE 1360 256 1328 256
WIRE 1328 112 1664 112
WIRE 1440 432 1472 432
WIRE 1696 256 1520 256
WIRE 1328 256 1328 112
WIRE 1440 208 1440 160
WIRE 1440 160 1552 160
WIRE 1552 160 1552 192
WIRE 1264 368 1264 304
WIRE 1024 480 1264 480
WIRE -16 512 -16 480
WIRE 416 752 416 704
WIRE 416 704 448 704
WIRE 416 832 416 864
WIRE 416 864 480 864
WIRE 736 368 736 112
WIRE 736 112 768 112
WIRE 736 448 736 480
WIRE 736 480 1024 480
WIRE 288 224 288 112
WIRE 288 112 400 112
WIRE 480 112 544 112
WIRE -16 752 -16 720
WIRE -16 720 16 720
WIRE 640 368 640 336
WIRE 640 448 640 480
WIRE 640 480 736 480
WIRE 512 576 608 576
WIRE 688 576 752 576
WIRE 48 96 512 96
WIRE 512 80 48 80
WIRE 48 64 512 64
FLAG 208 240 DRV
IOPIN 208 240 In
FLAG -16 512 0
FLAG 16 720 +5V
IOPIN 16 720 Out
FLAG -16 896 0
FLAG 512 624 +5V
IOPIN 512 624 In
FLAG 80 576 VOUT
IOPIN 80 576 In
FLAG 1120 576 VVEA
IOPIN 1120 576 Out
FLAG 944 256 PWM
IOPIN 944 256 Out
FLAG 944 384 PWMD
IOPIN 944 384 In
FLAG 944 112 +5V
IOPIN 944 112 In
FLAG 768 112 VOUT
IOPIN 768 112 Out
FLAG 320 336 ISNS
IOPIN 320 336 Out
FLAG 944 432 ISNS
IOPIN 944 432 In
FLAG 1120 688 PWMD
IOPIN 1120 688 Out
FLAG 1792 112 +5V
IOPIN 1792 112 In
FLAG 1792 208 DRV
IOPIN 1792 208 Out
FLAG 1232 304 CLK
IOPIN 1232 304 Out
FLAG 1664 240 CLK
IOPIN 1664 240 In
FLAG 1472 432 PWM
IOPIN 1472 432 In
FLAG 1552 192 0
SYMBOL sw 288 320 M180
WINDOW 0 -138 140 Left 0
WINDOW 3 -135 115 Left 0
SYMATTR InstName S1
SYMATTR Value MSWITCH
SYMBOL ind2 160 96 R90
WINDOW 0 62 64 VBottom 0
WINDOW 3 59 56 VTop 0
SYMATTR InstName L1
SYMATTR Value 90U
SYMATTR SpiceLine Rser=10m
SYMATTR Type ind
SYMBOL diode 544 128 R270
WINDOW 0 62 32 VTop 0
WINDOW 3 65 19 VBottom 0
SYMATTR InstName DCATCH
SYMATTR Value IDEAL
SYMBOL res 304 464 R180
WINDOW 0 -68 69 Left 0
WINDOW 3 -38 45 Left 0
SYMATTR InstName RSNS
SYMATTR Value 1R
SYMBOL Opamps\\1pole 480 688 R0
SYMATTR InstName U1
SYMBOL voltage -16 736 R0
WINDOW 0 -74 49 Left 0
WINDOW 3 -75 67 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value +5V
SYMBOL cap 512 560 R90
WINDOW 0 -26 35 VBottom 0
WINDOW 3 -31 29 VTop 0
SYMATTR InstName C1
SYMATTR Value 100p
SYMBOL res 208 736 R0
WINDOW 0 -52 45 Left 0
WINDOW 3 -52 71 Left 0
SYMATTR InstName R2
SYMATTR Value 12K
SYMBOL res 208 560 R90
WINDOW 0 -22 69 VBottom 0
WINDOW 3 -27 58 VTop 0
SYMATTR InstName R1
SYMATTR Value 200K
SYMBOL voltage 416 736 R0
WINDOW 0 -104 46 Left 0
WINDOW 3 -101 69 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName VREF
SYMATTR Value 2.5V
SYMBOL sw 1024 464 M180
WINDOW 0 42 72 Left 0
WINDOW 3 42 48 Left 0
SYMATTR InstName S2
SYMATTR Value PWMC
SYMBOL res 1008 128 R0
SYMATTR InstName R4
SYMATTR Value 1K
SYMBOL cap 624 272 R0
WINDOW 0 -51 25 Left 0
WINDOW 3 -54 49 Left 0
SYMATTR InstName C2
SYMATTR Value 1U
SYMBOL voltage -16 352 R0
WINDOW 0 -84 49 Left 0
WINDOW 3 -84 76 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName VIN
SYMATTR Value 6V
SYMBOL diode 784 704 R270
WINDOW 0 54 12 VTop 0
WINDOW 3 60 32 VBottom 0
SYMATTR InstName D1
SYMATTR Value IDEAL
SYMBOL diode 880 704 R270
WINDOW 0 57 17 VTop 0
WINDOW 3 63 35 VBottom 0
SYMATTR InstName D2
SYMATTR Value IDEAL
SYMBOL res 1072 672 R90
WINDOW 0 -22 66 VBottom 0
WINDOW 3 -26 51 VTop 0
SYMATTR InstName R5
SYMATTR Value 200K
SYMBOL res 1104 832 R180
WINDOW 0 61 66 Left 0
WINDOW 3 36 40 Left 0
SYMATTR InstName R6
SYMATTR Value 100K
SYMBOL Digital\\dflop 1440 208 R0
SYMATTR InstName A1
SYMATTR SpiceLine Trise=100n Tfall=100n Vhigh=5 Vlow=0
SYMBOL voltage 1264 352 R0
WINDOW 0 -117 54 Left 0
WINDOW 3 -335 70 Invisible 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName CLOCK
SYMATTR Value PULSE(0 5 0 100n 100n 9u 10u)
SYMBOL Digital\\and 1728 160 R0
WINDOW 0 -35 7 Left 0
SYMATTR InstName A2
SYMATTR SpiceLine Trise=200n Tfall=200n Vhigh=5 Vlow=0
SYMBOL res 720 352 R0
WINDOW 0 36 60 Left 0
WINDOW 3 37 80 Left 0
SYMATTR InstName RLOAD
SYMATTR Value 4K7
SYMBOL ind2 496 96 R90
WINDOW 0 69 70 VBottom 0
WINDOW 3 64 55 VTop 0
SYMATTR InstName L2
SYMATTR Value 680U
SYMATTR Type ind
SYMBOL res 624 352 R0
WINDOW 0 -55 44 Left 0
WINDOW 3 -56 68 Left 0
SYMATTR InstName R7
SYMATTR Value 1m
SYMBOL res 704 560 R90
WINDOW 0 -20 71 VBottom 0
WINDOW 3 -27 58 VTop 0
SYMATTR InstName R3
SYMATTR Value 1500K
TEXT -24 960 Left 0 !.model MSWITCH SW(Ron=10m Roff=1E6 Vt=2.5 vh=-1)
TEXT -24 984 Left 0 !.model PWMC SW(Ron=10m Roff=1E6 Vt=1u vh=-5m)
TEXT -24 936 Left 0 !.tran 0 1m 500u uic
TEXT 208 24 Left 0 !K1 L1 L2 1