Version 4
SHEET 1 2512 1444
WIRE 608 160 576 160
WIRE 912 160 944 160
WIRE 272 352 992 352
WIRE 992 352 992 224
WIRE 992 144 992 128
WIRE 768 160 800 160
WIRE 992 128 1040 128
WIRE 992 128 992 112
WIRE 992 32 992 0
WIRE 992 0 1056 0
WIRE 368 0 384 0
WIRE 272 0 304 0
WIRE 192 0 160 0
WIRE 160 0 160 96
WIRE 96 352 96 320
WIRE 160 320 160 352
WIRE 160 352 96 352
WIRE 160 208 224 208
WIRE -64 0 96 0
WIRE 96 240 96 96
WIRE 96 0 160 0
WIRE -144 0 -176 0
WIRE 272 224 272 352
WIRE 272 352 160 352
WIRE 384 0 384 96
WIRE 96 384 96 352
WIRE 608 96 576 96
WIRE 608 128 576 128
WIRE -112 672 -112 640
WIRE -112 640 -80 640
WIRE -112 752 -112 784
WIRE -112 784 -32 784
WIRE -32 784 -32 656
WIRE -32 576 -32 560
WIRE -32 560 16 560
WIRE -32 560 -32 544
WIRE -32 464 -32 432
WIRE -32 432 336 432
WIRE 496 432 496 672
WIRE 496 752 496 784
WIRE 496 784 336 784
WIRE 720 560 688 560
WIRE 720 576 688 576
WIRE 688 576 688 560
WIRE 720 608 688 608
WIRE 688 608 688 624
WIRE 688 624 720 624
WIRE 736 624 736 784
WIRE 736 784 496 784
WIRE 688 560 656 560
WIRE 688 624 656 624
WIRE -64 96 -16 96
WIRE 48 96 96 96
WIRE 96 96 96 0
WIRE -144 96 -176 96
WIRE -176 96 -176 0
WIRE -176 0 -208 0
WIRE 160 96 304 96
WIRE 368 96 384 96
WIRE 432 208 432 0
WIRE 432 0 384 0
WIRE 432 208 944 208
WIRE 160 240 160 208
WIRE 496 432 528 432
WIRE -208 592 -80 592
WIRE -112 544 -112 640
WIRE -112 464 -112 432
WIRE -112 432 -208 432
WIRE 256 640 288 640
WIRE -32 784 256 784
WIRE 336 784 336 656
WIRE 336 576 336 560
WIRE 336 560 384 560
WIRE 336 560 336 544
WIRE 336 464 336 432
WIRE 336 432 496 432
WIRE 288 592 208 592
WIRE 720 592 656 592
WIRE 256 672 256 640
WIRE 256 752 256 784
WIRE 256 784 336 784
WIRE 928 608 784 608
WIRE 928 560 896 560
WIRE 1024 560 1056 560
WIRE 928 640 928 784
WIRE 928 784 736 784
WIRE -112 816 -112 784
WIRE 576 0 800 0
WIRE 800 0 800 160
WIRE 800 160 832 160
WIRE 432 208 432 240
WIRE 432 240 480 240
WIRE 160 96 160 160
WIRE 160 160 224 160
WIRE 272 144 272 128
WIRE 272 128 384 128
WIRE 384 128 384 96
FLAG 1040 128 PWM
IOPIN 1040 128 Out
FLAG -208 0 VOUT
IOPIN -208 0 In
FLAG 96 384 0
FLAG 576 0 RAMP
IOPIN 576 0 Out
FLAG 576 160 VBUS
IOPIN 576 160 In
FLAG 576 96 S
IOPIN 576 96 Out
FLAG 576 128 R
IOPIN 576 128 Out
FLAG 16 560 DCL
IOPIN 16 560 Out
FLAG -208 592 RAMP
IOPIN -208 592 In
FLAG 656 560 PWM
IOPIN 656 560 In
FLAG 656 624 DCL
IOPIN 656 624 In
FLAG 528 432 15V
IOPIN 528 432 Out
FLAG -208 432 VBUS
IOPIN -208 432 In
FLAG 384 560 ILIM
IOPIN 384 560 Out
FLAG 208 592 IPSNS
IOPIN 208 592 In
FLAG 656 592 ILIM
IOPIN 656 592 In
FLAG 896 560 R
IOPIN 896 560 In
FLAG 1056 0 15V
IOPIN 1056 0 In
FLAG 1056 560 DRV
IOPIN 1056 560 Out
FLAG -112 816 0
FLAG 480 240 VVEA
IOPIN 480 240 Out
SYMBOL C:\\keiths\\daren\\spice\\rgen 688 160 R0
SYMATTR InstName X1
SYMBOL sw 992 240 M180
WINDOW 0 45 74 Left 0
WINDOW 3 43 50 Left 0
SYMATTR InstName S1
SYMATTR Value COMP
SYMBOL res 288 -16 R90
WINDOW 0 -20 68 VBottom 0
WINDOW 3 -27 60 VTop 0
SYMATTR InstName R4
SYMATTR Value 33K
SYMBOL cap 368 -16 R90
WINDOW 0 -24 34 VBottom 0
WINDOW 3 -29 30 VTop 0
SYMATTR InstName C2
SYMATTR Value 4n7
SYMBOL voltage 928 160 R90
WINDOW 0 -58 47 VBottom 0
WINDOW 3 -62 54 VTop 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName VOFF
SYMATTR Value 0.7V
SYMBOL res 976 16 R0
WINDOW 3 34 64 Left 0
SYMATTR Value 1K
SYMATTR InstName R5
SYMBOL res -48 -16 R90
WINDOW 0 -19 61 VBottom 0
WINDOW 3 -26 53 VTop 0
SYMATTR InstName R1
SYMATTR Value 20K
SYMBOL res 112 336 R180
WINDOW 0 47 67 Left 0
WINDOW 3 37 46 Left 0
SYMATTR InstName R3
SYMATTR Value 10K
SYMBOL voltage 160 224 R0
WINDOW 0 36 48 Left 0
WINDOW 3 36 67 Left 0
SYMATTR InstName VREF
SYMATTR Value 5V
SYMBOL sw -32 672 M180
WINDOW 0 45 74 Left 0
WINDOW 3 43 50 Left 0
SYMATTR InstName S2
SYMATTR Value COMP
SYMBOL res -48 448 R0
WINDOW 3 36 62 Left 0
SYMATTR Value 1K
SYMATTR InstName R6
SYMBOL voltage 496 656 R0
WINDOW 0 34 40 Left 0
WINDOW 3 36 61 Left 0
SYMATTR InstName VSUPP
SYMATTR Value 15V
SYMBOL Digital\\and 752 528 R0
SYMATTR InstName A1
SYMATTR SpiceLine Trise=10n Tfall=10n Vhigh=15 Vlow=0
SYMBOL diode 368 112 M270
WINDOW 0 55 32 VTop 0
WINDOW 3 62 33 VBottom 0
SYMATTR InstName D5
SYMATTR Value ZID
SYMBOL res -48 80 R90
WINDOW 0 -17 56 VBottom 0
WINDOW 3 -23 56 VTop 0
SYMATTR InstName R2
SYMATTR Value 1K
SYMBOL cap 48 80 R90
WINDOW 0 -18 38 VBottom 0
WINDOW 3 -25 34 VTop 0
SYMATTR InstName C1
SYMATTR Value 33n
SYMBOL res -128 448 R0
WINDOW 0 -60 45 Left 0
WINDOW 3 -61 68 Left 0
SYMATTR InstName R7
SYMATTR Value 1240K
SYMBOL res -128 656 R0
WINDOW 0 -37 42 Left 0
WINDOW 3 -37 64 Left 0
SYMATTR InstName R8
SYMATTR Value 5K
SYMBOL sw 336 672 M180
WINDOW 0 45 74 Left 0
WINDOW 3 43 50 Left 0
SYMATTR InstName S3
SYMATTR Value COMP
SYMBOL res 320 448 R0
WINDOW 3 36 62 Left 0
SYMATTR Value 1K
SYMATTR InstName R9
SYMBOL voltage 256 656 R0
WINDOW 0 -127 43 Left 0
WINDOW 3 -126 68 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName VLIM
SYMATTR Value 200mV
SYMBOL Digital\\srflop 976 512 R0
SYMATTR InstName A2
SYMATTR SpiceLine Trise=200n Tfall=200n Vhigh=15 Vlow=0
SYMBOL e2 272 128 R0
WINDOW 0 40 37 Left 0
WINDOW 3 38 59 Left 0
SYMATTR InstName E1
SYMATTR Value 1E6
TEXT 344 320 Left 0 !.MODEL COMP SW(Ron=10m Roff=10K Von=0 Vh=-1m)
TEXT 344 296 Left 0 !.MODEL ZID D(Ron=0 Vrev=5)