Version 4
SHEET 1 2664 1416
WIRE 96 -80 96 -32
WIRE 96 416 96 48
WIRE 96 480 96 512
WIRE 96 512 0 512
WIRE -112 0 -112 -32
WIRE -112 -32 -176 -32
WIRE -240 -32 -240 0
WIRE 96 -160 96 -192
WIRE 96 -192 -176 -192
WIRE -176 -192 -176 -160
WIRE -176 -80 -176 -32
WIRE -176 -32 -240 -32
WIRE -48 48 0 48
WIRE -176 -192 -528 -192
WIRE -528 -192 -528 -160
WIRE -528 -80 -528 -32
WIRE -528 480 -528 512
WIRE -528 512 -400 512
WIRE -240 320 -64 320
WIRE -240 96 -240 320
WIRE -304 48 -400 48
WIRE -528 48 -528 400
WIRE -112 96 -112 512
WIRE -112 512 0 512
WIRE -528 -192 -656 -192
WIRE -656 -192 -656 400
WIRE -656 480 -656 512
WIRE -656 512 -528 512
WIRE -656 544 -656 512
WIRE 0 272 0 48
WIRE 0 368 0 400
WIRE 0 480 0 512
WIRE -336 320 -240 320
WIRE -400 160 -400 48
WIRE -400 48 -528 48
WIRE -400 240 -400 272
WIRE -240 400 -240 320
WIRE -240 480 -240 512
WIRE -240 512 -112 512
WIRE -400 400 -400 368
WIRE -400 480 -400 512
WIRE -400 512 -240 512
WIRE 400 0 400 -32
WIRE 400 -32 336 -32
WIRE 272 -32 272 0
WIRE 336 -192 336 -160
WIRE 336 -80 336 -32
WIRE 336 -32 272 -32
WIRE 400 512 272 512
WIRE 400 96 400 512
WIRE 512 368 512 512
WIRE 512 512 400 512
WIRE 96 -192 336 -192
WIRE 336 -192 512 -192
WIRE 512 -160 512 -192
WIRE 512 -80 512 -32
WIRE 272 96 272 320
WIRE 272 480 272 512
WIRE 272 512 96 512
WIRE 448 320 272 320
WIRE 272 320 272 400
WIRE 832 240 832 272
WIRE 832 272 912 272
WIRE 992 272 992 240
WIRE 912 272 912 400
WIRE 912 272 992 272
WIRE 912 480 912 512
WIRE 912 512 672 512
WIRE 832 -80 832 48
WIRE 992 -80 992 48
WIRE 672 -80 672 192
WIRE 672 192 768 192
WIRE 672 192 672 400
WIRE 672 480 672 512
WIRE 672 512 512 512
WIRE 512 -192 672 -192
WIRE 832 -192 832 -160
WIRE 672 -160 672 -192
WIRE 672 -192 832 -192
WIRE 992 -160 992 -192
WIRE 992 -192 832 -192
WIRE -480 -32 -528 -32
WIRE -528 -32 -528 48
WIRE 128 -32 96 -32
WIRE 96 -32 96 48
WIRE 560 -32 512 -32
WIRE 512 -32 512 272
WIRE 96 48 0 48
WIRE 96 48 208 48
WIRE 992 48 992 144
WIRE 1040 48 992 48
WIRE 1120 48 1168 48
WIRE 1232 48 1264 48
WIRE 1264 48 1264 192
WIRE 1264 48 1296 48
WIRE 1264 192 1056 192
WIRE 1264 400 1264 192
WIRE 1264 480 1264 512
WIRE 1264 512 912 512
WIRE 1408 48 1376 48
WIRE 464 48 832 48
WIRE 832 48 832 144
WIRE 768 816 768 1040
WIRE 768 1216 768 1264
WIRE 768 1264 592 1264
WIRE 720 800 672 800
WIRE 768 720 768 688
WIRE 688 608 768 608
WIRE 864 608 768 608
WIRE 944 608 1008 608
WIRE 1072 608 1152 608
WIRE 1152 608 1152 1136
WIRE 1152 1200 1152 1264
WIRE 1152 1264 928 1264
WIRE 560 912 560 800
WIRE 560 800 464 800
WIRE 464 848 464 800
WIRE 464 800 432 800
WIRE 464 928 464 960
WIRE 464 960 496 960
WIRE 464 960 464 1024
WIRE 560 1008 560 1072
WIRE 560 1072 528 1072
WIRE 560 1072 592 1072
WIRE 704 1072 768 1072
WIRE 768 1072 768 1136
WIRE 464 1120 464 1152
WIRE 464 1232 464 1264
WIRE 592 1152 592 1072
WIRE 592 1072 624 1072
WIRE 592 1216 592 1264
WIRE 592 1264 464 1264
WIRE 1152 608 1264 608
WIRE 800 1040 768 1040
WIRE 768 1040 768 1072
WIRE 1264 1216 1264 1264
WIRE 1264 1264 1152 1264
WIRE 1264 1136 1264 608
WIRE 1264 608 1328 608
WIRE 928 736 928 688
WIRE 928 688 768 688
WIRE 768 688 768 608
WIRE 928 800 928 1152
WIRE 928 1232 928 1264
WIRE 928 1264 768 1264
WIRE 992 -192 1024 -192
WIRE 608 608 448 608
WIRE 464 1264 464 1296
FLAG -656 544 0
FLAG 560 -32 PWM
IOPIN 560 -32 Out
FLAG 128 -32 RAMP
IOPIN 128 -32 Out
FLAG -480 -32 REF
IOPIN -480 -32 Out
FLAG 1408 48 VOUT
IOPIN 1408 48 In
FLAG 672 800 PWM
IOPIN 672 800 In
FLAG 432 800 RAMP
IOPIN 432 800 Out
FLAG 1328 608 VOUT
IOPIN 1328 608 Out
FLAG 800 1040 ISNS
IOPIN 800 1040 Out
FLAG 1024 -192 15V
IOPIN 1024 -192 Out
FLAG 448 608 15V
IOPIN 448 608 In
FLAG 464 1296 0
SYMBOL cap 80 416 R0
SYMATTR InstName C1
SYMATTR Value 2n2
SYMBOL res 80 -176 R0
WINDOW 0 33 49 Left 0
WINDOW 3 35 72 Left 0
SYMATTR InstName R5
SYMATTR Value 10K
SYMBOL pnp -48 96 R180
WINDOW 0 76 57 Left 0
WINDOW 3 23 36 Left 0
SYMATTR InstName Q3
SYMATTR Value 2N2907
SYMBOL pnp -304 96 M180
WINDOW 0 41 56 Left 0
WINDOW 3 40 32 Left 0
SYMATTR InstName Q4
SYMATTR Value 2N2907
SYMBOL res -192 -176 R0
WINDOW 0 36 49 Left 0
WINDOW 3 38 70 Left 0
SYMATTR InstName R6
SYMATTR Value 1K
SYMBOL res -544 -176 R0
WINDOW 0 -47 42 Left 0
WINDOW 3 -46 64 Left 0
SYMATTR InstName R7
SYMATTR Value 10K
SYMBOL res -544 384 R0
WINDOW 0 -51 35 Left 0
WINDOW 3 -51 59 Left 0
SYMATTR InstName R8
SYMATTR Value 10K
SYMBOL voltage -656 384 R0
WINDOW 0 -71 45 Left 0
WINDOW 3 -69 69 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 15V
SYMBOL npn -64 272 R0
SYMATTR InstName Q1
SYMATTR Value 2N2222
SYMBOL res -16 384 R0
WINDOW 0 -50 41 Left 0
WINDOW 3 -52 67 Left 0
SYMATTR InstName R1
SYMATTR Value 10R
SYMBOL npn -336 272 M0
WINDOW 0 80 35 Left 0
WINDOW 3 32 59 Left 0
SYMATTR InstName Q2
SYMATTR Value 2N2222
SYMBOL res -416 144 R0
WINDOW 0 -62 40 Left 0
WINDOW 3 -63 65 Left 0
SYMATTR InstName R2
SYMATTR Value 10K
SYMBOL res -256 384 R0
WINDOW 0 37 49 Left 0
SYMATTR InstName R3
SYMATTR Value 220R
SYMBOL res -416 384 R0
WINDOW 0 -73 40 Left 0
WINDOW 3 -74 63 Left 0
SYMATTR InstName R4
SYMATTR Value 100R
SYMBOL pnp 464 96 R180
WINDOW 0 76 57 Left 0
WINDOW 3 23 36 Left 0
SYMATTR InstName Q5
SYMATTR Value 2N2907
SYMBOL pnp 208 96 M180
WINDOW 0 41 56 Left 0
WINDOW 3 40 32 Left 0
SYMATTR InstName Q6
SYMATTR Value 2N2907
SYMBOL res 320 -176 R0
WINDOW 0 36 49 Left 0
WINDOW 3 38 70 Left 0
SYMATTR InstName R9
SYMATTR Value 1K
SYMBOL res 256 384 R0
SYMATTR InstName R10
SYMATTR Value 220R
SYMBOL npn 448 272 R0
SYMATTR InstName Q7
SYMATTR Value 2N2222
SYMBOL res 496 -176 R0
SYMATTR InstName R11
SYMATTR Value 1K
SYMBOL npn 768 144 R0
WINDOW 0 42 32 Left 0
WINDOW 3 42 54 Left 0
SYMATTR InstName Q8
SYMATTR Value 2N2222
SYMBOL npn 1056 144 M0
WINDOW 0 80 35 Left 0
WINDOW 3 32 59 Left 0
SYMATTR InstName Q9
SYMATTR Value 2N2222
SYMBOL res 896 384 R0
WINDOW 3 37 61 Left 0
SYMATTR Value 4K7
SYMATTR InstName R12
SYMBOL res 816 -176 R0
WINDOW 0 -59 43 Left 0
WINDOW 3 -56 68 Left 0
SYMATTR InstName R13
SYMATTR Value 10K
SYMBOL res 976 -176 R0
WINDOW 0 37 43 Left 0
WINDOW 3 36 64 Left 0
SYMATTR InstName R14
SYMATTR Value 10K
SYMBOL res 656 -176 R0
SYMATTR InstName R15
SYMATTR Value 20K
SYMBOL res 656 384 R0
WINDOW 3 36 61 Left 0
SYMATTR Value 10K
SYMATTR InstName R16
SYMBOL nmos 720 720 R0
SYMATTR InstName M1
SYMATTR Value FDS6961A
SYMBOL res 752 1120 R0
SYMATTR InstName R17
SYMATTR Value 500m
SYMBOL ind2 592 624 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 5 56 VBottom 0
SYMATTR InstName L1
SYMATTR Value 50µ
SYMATTR Type ind
SYMBOL diode 1008 624 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName D1
SYMATTR Value DID
SYMBOL ind2 848 624 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 5 56 VBottom 0
SYMATTR InstName L2
SYMATTR Value 5m
SYMATTR Type ind
SYMBOL res 1136 32 R90
WINDOW 0 -23 56 VBottom 0
WINDOW 3 -28 43 VTop 0
SYMATTR InstName R18
SYMATTR Value 1000K
SYMBOL cap 1232 32 R90
WINDOW 0 -22 38 VBottom 0
WINDOW 3 -28 29 VTop 0
SYMATTR InstName C2
SYMATTR Value 220p
SYMBOL res 1392 32 R90
WINDOW 0 -20 56 VBottom 0
WINDOW 3 -25 43 VTop 0
SYMATTR InstName R19
SYMATTR Value 350K
SYMBOL res 1248 384 R0
SYMATTR InstName R20
SYMATTR Value 10K
SYMBOL cap 1136 1136 R0
WINDOW 0 38 28 Left 0
WINDOW 3 40 50 Left 0
SYMATTR InstName C3
SYMATTR Value 1µ
SYMBOL npn 528 1024 M0
WINDOW 0 71 35 Left 0
WINDOW 3 32 59 Left 0
SYMATTR InstName Q10
SYMATTR Value 2N2222
SYMBOL res 720 1056 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R21
SYMATTR Value 1K
SYMBOL pnp 496 1008 M180
WINDOW 0 67 62 Left 0
WINDOW 3 68 40 Left 0
SYMATTR InstName Q11
SYMATTR Value 2N2907
SYMBOL res 448 1136 R0
SYMATTR InstName R22
SYMATTR Value 220R
SYMBOL res 448 832 R0
SYMATTR InstName R23
SYMATTR Value 1K
SYMBOL cap 576 1152 R0
WINDOW 0 40 26 Left 0
WINDOW 3 40 48 Left 0
SYMATTR InstName C4
SYMATTR Value 100p
SYMBOL load2 1264 1136 R0
WINDOW 0 44 28 Left 0
WINDOW 3 44 52 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName I1
SYMATTR Value 5m
SYMBOL cap 912 736 R0
SYMATTR InstName C5
SYMATTR Value 330p
SYMBOL res 912 1136 R0
SYMATTR InstName R24
SYMATTR Value 470R
TEXT -664 616 Left 0 !.tran 0 5m 1u uic
TEXT 720 576 Left 0 !K1 L1 L2 1
TEXT -664 592 Left 0 !.MODEL DID D(Ron=0)