Version 4
SHEET 1 1416 980
WIRE 432 -112 336 -112
WIRE 496 -112 432 -112
WIRE 640 -112 496 -112
WIRE 640 -96 640 -112
WIRE 336 -48 336 -112
WIRE 496 -32 496 -112
WIRE 640 0 640 -16
WIRE 336 48 336 16
WIRE 496 128 496 48
WIRE 576 128 496 128
WIRE 608 128 576 128
WIRE 640 128 608 128
WIRE 784 128 704 128
WIRE 1008 128 784 128
WIRE 1088 128 1008 128
WIRE 1136 128 1088 128
WIRE 496 192 496 128
WIRE 1008 192 1008 128
WIRE 784 208 784 128
WIRE 1136 208 1136 128
WIRE -368 240 -448 240
WIRE 128 272 80 272
WIRE 208 272 128 272
WIRE 416 272 288 272
WIRE 448 272 416 272
WIRE 608 272 608 128
WIRE 1008 288 1008 272
WIRE 1008 288 944 288
WIRE -448 304 -448 240
WIRE 16 304 -48 304
WIRE 80 304 80 272
WIRE 1008 304 1008 288
WIRE 16 336 -48 336
WIRE -448 464 -448 384
WIRE 496 464 496 288
WIRE 496 464 -448 464
WIRE 608 464 608 336
WIRE 608 464 496 464
WIRE 784 464 784 272
WIRE 784 464 608 464
WIRE 1008 464 1008 384
WIRE 1008 464 784 464
WIRE 1136 464 1136 288
WIRE 1136 464 1008 464
WIRE -448 496 -448 464
WIRE 416 592 352 592
WIRE 560 592 480 592
WIRE -336 624 -368 624
WIRE -224 624 -256 624
WIRE -192 624 -224 624
WIRE -224 656 -224 624
WIRE 352 672 352 592
WIRE 368 672 352 672
WIRE 448 672 432 672
WIRE 560 672 560 592
WIRE 560 672 528 672
WIRE 592 672 560 672
WIRE 704 672 672 672
WIRE -224 752 -224 720
WIRE 448 752 432 752
WIRE 432 768 432 752
WIRE 560 784 560 672
WIRE 560 784 464 784
WIRE 176 800 112 800
WIRE 224 800 176 800
WIRE 352 800 352 672
WIRE 352 800 304 800
WIRE 400 800 352 800
WIRE 720 800 704 800
WIRE 512 816 464 816
WIRE 176 832 176 800
WIRE 720 832 720 800
WIRE 176 928 176 912
WIRE 432 928 432 832
WIRE 720 928 720 912
FLAG -368 240 triangle
FLAG 576 128 vd
FLAG -448 496 0
FLAG 640 0 0
FLAG 1088 128 +12V
FLAG 416 272 vg
FLAG -368 624 pwm
FLAG -224 752 0
FLAG -192 624 test1
FLAG 128 272 pwm
FLAG 944 288 fb
FLAG 720 928 0
FLAG 704 800 ref
FLAG 112 800 ctrl
FLAG 336 48 0
FLAG 432 -112 +5V
FLAG 432 928 0
FLAG 176 928 0
FLAG 704 672 fb
FLAG 512 816 ref
FLAG 432 752 +5V
FLAG -48 336 triangle
FLAG -48 304 ctrl
SYMBOL voltage -448 288 R0
WINDOW 3 9 107 Left 2
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR Value PULSE(0 5 0 5u 5u 0 10u)
SYMATTR InstName V2
SYMBOL voltage 640 -112 R0
WINDOW 123 0 0 Left 0
WINDOW 39 31 71 Left 2
SYMATTR SpiceLine Rser=0.1
SYMATTR InstName V3
SYMATTR Value 5
SYMBOL ind 480 -48 R0
WINDOW 39 36 108 Left 2
SYMATTR SpiceLine Rser=.2
SYMATTR InstName L1
SYMATTR Value 20u
SYMBOL schottky 640 144 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D1
SYMATTR Value SD
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res 1120 192 R0
SYMATTR InstName RLOAD
SYMATTR Value 100
SYMBOL cap 768 208 R0
WINDOW 39 24 92 Left 2
SYMATTR SpiceLine Rser=.1
SYMATTR InstName C1
SYMATTR Value 100u
SYMBOL res -352 640 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R1
SYMATTR Value 1k
SYMBOL cap -240 656 R0
SYMATTR InstName C2
SYMATTR Value .1u
SYMBOL res 192 288 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R2
SYMATTR Value 10
SYMBOL res 992 176 R0
SYMATTR InstName R5
SYMATTR Value 9.5k
SYMBOL res 992 288 R0
SYMATTR InstName R6
SYMATTR Value 2.5k
SYMBOL voltage 720 816 R0
SYMATTR InstName V4
SYMATTR Value 2.5
SYMBOL cap 320 -48 R0
WINDOW 39 39 92 Left 2
SYMATTR SpiceLine Rser=0.05
SYMATTR InstName C7
SYMATTR Value 100u
SYMBOL schottky 592 336 M180
WINDOW 0 24 72 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D2
SYMATTR Value SD
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL Opamps\\LT1797 432 736 M0
SYMATTR InstName U1
SYMBOL res 160 816 R0
SYMATTR InstName R3
SYMATTR Value 10k
SYMBOL res 320 784 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 10k
SYMBOL res 688 656 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R7
SYMATTR Value 10k
SYMBOL res 544 656 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R8
SYMATTR Value 10k
SYMBOL cap 432 656 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C4
SYMATTR Value 0.01u
SYMBOL Digital\\diffschmitt 16 256 R0
WINDOW 39 -79 117 Left 2
SYMATTR InstName A1
SYMATTR SpiceLine Vhigh=5 Vt=0 Vh=1m Rout=1 Cout=1n
SYMBOL nmos 448 192 R0
SYMATTR InstName M1
SYMATTR Value IRLML6244
SYMBOL cap 480 576 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value 47p
TEXT -440 24 Left 2 !.tran 0 20m 0 .05u startup
TEXT 48 744 Left 2 ;0 ... 2.5V
TEXT -432 -80 Left 2 ;Voltage Mode Boost Converter
TEXT 64 544 Left 2 ;Error Amplifier plus Reference
TEXT -8 224 Left 2 ;comparator
TEXT -440 -24 Left 2 !.model SD D(Is=1e-9 Rs=0.1)
TEXT -440 56 Left 2 !.options plotwinsize=0
TEXT 216 152 Left 2 ;smooth edge\nconvergence
LINE Normal 736 608 928 320 2
LINE Normal 754 600 736 608 2
LINE Normal 754 600 754 600 2
LINE Normal 754 600 754 600 2
LINE Normal 734 593 736 608 2
LINE Normal 734 593 734 593 2
LINE Normal 560 816 575 825 2
LINE Normal 570 800 560 816 2
LINE Normal 570 800 570 800 2
LINE Normal 656 800 560 816 2
LINE Normal 656 800 656 800 2
LINE Normal 48 416 48 672 2
LINE Normal 32 432 48 416 2
LINE Normal 64 432 48 416 2
LINE Normal -224 224 -256 256 2
LINE Normal -192 256 -224 224 2
LINE Normal -160 224 -192 256 2
RECTANGLE Normal 832 976 -16 528
RECTANGLE Normal 384 480 192 208 2