Version 4
SHEET 1 1684 1876
WIRE -352 48 -384 48
WIRE 48 48 -352 48
WIRE 304 48 272 48
WIRE 416 48 384 48
WIRE 544 48 480 48
WIRE 608 48 544 48
WIRE 720 48 608 48
WIRE 768 48 720 48
WIRE 608 96 608 48
WIRE 720 128 720 48
WIRE -352 144 -352 48
WIRE -160 144 -176 144
WIRE 48 144 32 144
WIRE 608 208 608 160
WIRE -352 288 -352 224
WIRE 224 288 224 176
WIRE 224 288 -352 288
WIRE 608 288 608 272
WIRE 608 288 224 288
WIRE 720 288 720 208
WIRE 720 288 608 288
WIRE -352 320 -352 288
WIRE -176 352 -176 144
WIRE -144 352 -176 352
WIRE -80 352 -144 352
WIRE 48 352 -16 352
WIRE 544 384 544 48
WIRE 544 384 416 384
WIRE -144 432 -144 352
WIRE -128 432 -144 432
WIRE -32 432 -64 432
WIRE 48 432 48 352
WIRE 48 432 32 432
WIRE 416 432 416 384
WIRE 544 512 544 384
WIRE 416 528 416 496
WIRE 48 624 48 432
WIRE 48 624 -48 624
WIRE 416 624 416 592
WIRE 416 624 48 624
WIRE 544 624 544 576
WIRE 544 624 416 624
WIRE -144 640 -144 432
WIRE -144 640 -176 640
WIRE -112 640 -144 640
WIRE -16 656 -48 656
WIRE -16 688 -16 656
WIRE 544 688 544 624
WIRE -16 800 -16 768
WIRE 544 800 544 752
FLAG -352 320 0
FLAG 768 48 OUT
IOPIN 768 48 Out
FLAG -384 48 IN
IOPIN -384 48 In
FLAG -176 640 Verr
IOPIN -176 640 Out
FLAG -16 800 0
FLAG 544 800 0
SYMBOL ind2 288 64 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 4 56 VBottom 0
SYMATTR InstName L1
SYMATTR Value 75µH
SYMBOL res2 592 96 R0
SYMATTR InstName Resr
SYMATTR Value 70m
SYMBOL cap 592 208 R0
SYMATTR InstName Cout
SYMATTR Value 100µF
SYMBOL Opamps\\opamp -80 576 M0
WINDOW 0 32 -46 Right 0
WINDOW 39 32 -14 Right 0
WINDOW 40 32 18 Right 0
SYMATTR InstName X1
SYMATTR SpiceLine Aol=1K
SYMBOL Gain -96 144 R0
WINDOW 39 18 63 Left 0
SYMATTR SpiceLine k=0.5
SYMATTR InstName X3
SYMBOL voltage -352 128 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 10V
SYMBOL res2 -64 416 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName R2
SYMATTR Value {R2}
SYMBOL cap 32 416 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C1
SYMATTR Value {C1}
SYMBOL cap -16 336 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C2
SYMATTR Value {C2}
SYMBOL voltage -16 672 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value 2.5V
SYMBOL res2 480 32 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName R5
SYMATTR Value 20m
SYMBOL res2 528 688 R0
SYMATTR InstName Rlower
SYMATTR Value 10k
SYMBOL res2 528 512 R0
SYMATTR InstName Rupper
SYMATTR Value {Rupper}
SYMBOL res2 400 432 R0
SYMATTR InstName R3
SYMATTR Value {R3}
SYMBOL cap 400 528 R0
SYMATTR InstName C3
SYMATTR Value {C3}
SYMBOL current 720 128 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName I1
SYMATTR Value PULSE(0.13 0.3 4m 100u 100u 3.99m 8m)
SYMBOL BUCK-CCM-DCM-VM 192 96 R0
WINDOW 39 -145 -127 Left 0
SYMATTR SpiceLine L=75u Fsw=100k
SYMATTR InstName X4
TEXT -432 736 Left 0 !.tran 20m
TEXT -432 448 Left 0 !.PARAM C1=20.6nF\n.PARAM C2=2.3nF\n.PARAM C3=9.1nF\n.PARAM Rupper=10k\n.PARAM R3=1.1k\n.PARAM R2=4.9k
TEXT -432 704 Left 0 !.lib opamp.sub
TEXT 560 -8 Left 0 !.include application.lib
RECTANGLE Normal 1216 832 -480 -128