Version 4
SHEET 1 2292 1876
WIRE 192 -1056 176 -1056
WIRE 448 -1056 192 -1056
WIRE 592 -1056 528 -1056
WIRE 624 -1056 592 -1056
WIRE 656 -1056 624 -1056
WIRE 784 -1056 736 -1056
WIRE 960 -1056 864 -1056
WIRE 1104 -1056 960 -1056
WIRE 1216 -1056 1104 -1056
WIRE 1264 -1056 1216 -1056
WIRE 192 -1024 192 -1056
WIRE 592 -1024 592 -1056
WIRE 960 -1024 960 -1056
WIRE 1104 -1024 1104 -1056
WIRE 464 -992 464 -1008
WIRE 464 -992 320 -992
WIRE 288 -928 256 -928
WIRE 320 -928 320 -992
WIRE 320 -928 288 -928
WIRE 352 -928 320 -928
WIRE 480 -928 448 -928
WIRE 512 -928 512 -1008
WIRE 512 -928 480 -928
WIRE 192 -912 192 -944
WIRE 592 -912 592 -960
WIRE 784 -912 752 -912
WIRE 880 -912 864 -912
WIRE 960 -912 960 -960
WIRE 1104 -912 1104 -944
WIRE 352 -880 320 -880
WIRE 1216 -864 1216 -1056
WIRE 256 -816 256 -928
WIRE 656 -784 560 -784
WIRE 720 -784 656 -784
WIRE 752 -784 752 -912
WIRE 752 -784 720 -784
WIRE 784 -784 752 -784
WIRE 880 -784 864 -784
WIRE 320 -768 320 -880
WIRE 496 -768 320 -768
WIRE 720 -768 720 -784
WIRE 592 -752 560 -752
WIRE 656 -752 656 -784
WIRE 976 -752 960 -752
WIRE 1056 -752 1040 -752
WIRE 1152 -752 1136 -752
WIRE 1216 -752 1216 -784
WIRE 1216 -752 1152 -752
WIRE 256 -720 256 -736
WIRE 1216 -720 1216 -752
WIRE 656 -672 656 -688
WIRE 720 -672 720 -688
WIRE 960 -672 960 -752
WIRE 1024 -672 960 -672
WIRE 1152 -672 1152 -752
WIRE 1152 -672 1088 -672
WIRE 592 -624 592 -752
WIRE 896 -624 592 -624
WIRE 960 -624 960 -672
WIRE 960 -624 896 -624
WIRE 1216 -608 1216 -640
WIRE 1152 -592 1152 -672
WIRE 1152 -592 1104 -592
WIRE 960 -576 960 -624
WIRE 1040 -576 960 -576
WIRE 1152 -560 1104 -560
WIRE 1152 -528 1152 -560
WIRE 1152 -416 1152 -448
WIRE 1072 -128 1056 -128
WIRE 1088 -128 1072 -128
WIRE 1056 -96 1056 -128
WIRE 256 -32 240 -32
WIRE 352 -32 336 -32
WIRE 368 -32 352 -32
WIRE 448 -32 416 -32
WIRE 560 -32 528 -32
WIRE 608 -32 560 -32
WIRE 736 -32 688 -32
WIRE 416 0 416 -32
WIRE 560 0 560 -32
WIRE 1056 16 1056 -16
WIRE 464 64 416 0
WIRE 512 64 560 0
WIRE 800 64 736 -32
WIRE 256 112 176 112
WIRE 384 112 336 112
WIRE 432 112 384 112
WIRE 464 112 464 64
WIRE 464 112 432 112
WIRE 512 112 512 64
WIRE 528 112 512 112
WIRE 560 112 528 112
WIRE 704 112 640 112
WIRE 800 112 800 64
WIRE 800 112 784 112
WIRE 880 112 800 112
WIRE 960 112 880 112
WIRE 1104 112 960 112
WIRE 1216 112 1104 112
WIRE 1232 112 1216 112
WIRE 960 144 960 112
WIRE 1104 144 1104 112
WIRE 384 160 384 112
WIRE 1216 224 1216 112
WIRE 704 256 672 256
WIRE 816 256 784 256
WIRE 960 256 960 208
WIRE 1104 256 1104 224
WIRE 384 272 384 240
WIRE 976 336 960 336
WIRE 1056 336 1040 336
WIRE 1152 336 1136 336
WIRE 1216 336 1216 304
WIRE 1216 336 1152 336
WIRE 272 352 256 352
WIRE 368 352 352 352
WIRE 1216 368 1216 336
WIRE 256 384 256 352
WIRE 576 384 544 384
WIRE 672 384 672 256
WIRE 672 384 640 384
WIRE 704 384 672 384
WIRE 816 384 784 384
WIRE 960 416 960 336
WIRE 1024 416 960 416
WIRE 1152 416 1152 336
WIRE 1152 416 1088 416
WIRE 720 432 704 432
WIRE 896 432 768 432
WIRE 960 432 960 416
WIRE 960 432 896 432
WIRE 1216 480 1216 448
WIRE 1152 496 1152 416
WIRE 1152 496 1104 496
WIRE 256 512 256 464
WIRE 288 512 256 512
WIRE 384 512 288 512
WIRE 608 512 528 512
WIRE 672 512 608 512
WIRE 704 512 672 512
WIRE 816 512 784 512
WIRE 960 512 960 432
WIRE 1040 512 960 512
WIRE 1136 528 1104 528
WIRE 256 544 256 512
WIRE 384 544 384 512
WIRE 528 544 528 512
WIRE 672 544 672 512
WIRE 256 640 256 608
WIRE 384 640 384 624
WIRE 528 640 528 624
WIRE 672 640 672 608
FLAG 1216 480 0
FLAG 960 256 0
FLAG 1104 256 0
FLAG 1152 -416 0
FLAG 1264 -1056 Out
IOPIN 1264 -1056 Out
FLAG 896 -624 Verr1
FLAG 624 -1056 x1
FLAG 192 -912 0
FLAG 480 -928 Q
FLAG 720 -672 0
FLAG 880 -912 0
FLAG 592 -912 0
FLAG 960 -912 0
FLAG 1104 -912 0
FLAG 256 -720 0
FLAG 288 -928 clk
FLAG 656 -672 0
FLAG 368 352 0
FLAG 256 352 d
FLAG 528 640 0
FLAG 672 640 0
FLAG 384 640 0
FLAG 256 640 0
FLAG 608 512 ramp
FLAG 432 112 x
FLAG 384 272 0
FLAG 816 256 0
FLAG 544 384 0
FLAG 816 384 0
FLAG 672 256 di
FLAG 816 512 0
FLAG 528 112 y
FLAG 240 -32 0
FLAG 352 -32 Dz
FLAG 176 112 i
IOPIN 176 112 BiDir
FLAG 1232 112 o
IOPIN 1232 112 BiDir
FLAG 704 432 0
FLAG 896 432 Verr
FLAG 1152 -560 ref
FLAG 176 -1056 i
IOPIN 176 -1056 BiDir
FLAG 880 112 o
FLAG 1216 -608 0
FLAG 1136 528 ref
IOPIN 1136 528 In
FLAG 1056 16 0
FLAG 1072 -128 Kf
FLAG 880 -784 0
FLAG 288 512 c
SYMBOL cap 944 144 R0
WINDOW 39 25 80 Left 0
WINDOW 3 25 56 Left 0
SYMATTR SpiceLine Rser=70m
SYMATTR Value {C}
SYMATTR InstName Co
SYMBOL cap 1040 320 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C1
SYMATTR Value 10nF
SYMBOL cap 1088 400 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C2
SYMATTR Value 470pF
SYMBOL voltage 1152 -544 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
WINDOW 0 16 16 Left 0
WINDOW 3 16 96 Left 0
SYMATTR InstName Vref
SYMATTR Value {Vo/2}
SYMBOL current 1104 144 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
WINDOW 3 0 -64 Bottom 0
WINDOW 0 16 0 Left 0
SYMATTR Value PULSE({I1} {I2} 1m 100u 100u 2m99 6m)
SYMATTR InstName Io
SYMBOL Opamps\\opamp 1072 448 M0
WINDOW 0 0 40 Bottom 0
WINDOW 3 0 96 Top 0
SYMATTR InstName X1
SYMATTR SpiceLine ""
SYMATTR SpiceLine2 ""
SYMBOL res 1200 208 R0
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL res 1200 352 R0
SYMATTR InstName R2
SYMATTR Value 10k
SYMBOL res 1152 320 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R3
SYMATTR Value 20k
SYMBOL cap 944 -1024 R0
WINDOW 39 24 80 Left 0
WINDOW 3 24 56 Left 0
SYMATTR SpiceLine Rser=70m
SYMATTR Value {C}
SYMATTR InstName Cout
SYMBOL voltage 192 -1040 M0
WINDOW 123 0 0 Left 0
WINDOW 39 24 132 Left 0
WINDOW 3 -24 16 Right 0
SYMATTR Value 8.24V
SYMATTR InstName Vi
SYMBOL current 1104 -1024 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
WINDOW 3 16 -64 Bottom 0
WINDOW 0 16 0 Left 0
SYMATTR Value PULSE({I1} {I2} 1m 100u 100u 2m99 6m)
SYMATTR InstName Iout
SYMBOL voltage 256 -832 M0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
WINDOW 3 64 160 Right 0
WINDOW 0 16 16 Left 0
SYMATTR Value PULSE(0 1 0 10n 10n 40n {1/f})
SYMATTR InstName Vclk
SYMBOL Digital\\srflop 400 -976 R0
WINDOW 0 -48 0 Left 0
WINDOW 3 -48 144 Left 0
SYMATTR InstName A1
SYMATTR Value td=10n tau=10n
SYMATTR Value2 tripdt=5n
SYMBOL ind2 640 -1040 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 4 56 VBottom 0
WINDOW 39 61 56 VTop 0
SYMATTR InstName L1
SYMATTR Value {L}
SYMATTR SpiceLine Rser=20m
SYMBOL Digital\\diffschmtbuf 560 -832 M0
WINDOW 0 0 17 Left 0
WINDOW 3 0 112 Left 0
SYMATTR InstName A2
SYMATTR Value Vh=0 tau=5n
SYMATTR Value2 Vt=0 tripdt=5n
SYMBOL res 704 -784 R0
SYMATTR InstName R7
SYMATTR Value 1
SYMBOL f 864 -912 M270
WINDOW 0 32 40 VTop 0
WINDOW 3 -32 40 VBottom 0
SYMATTR InstName F1
SYMATTR Value V1 1
SYMBOL voltage 768 -1056 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 -32 56 VBottom 0
SYMATTR InstName V1
SYMATTR Value 0
SYMBOL diode 576 -960 M180
WINDOW 0 24 63 Left 0
WINDOW 3 24 0 Left 0
SYMATTR InstName D1
SYMATTR Value Di
SYMBOL sw 432 -1056 R270
WINDOW 0 32 24 VLeft 0
WINDOW 3 32 88 VRight 0
SYMATTR InstName S1
SYMATTR Value Si
SYMBOL cap 672 -752 M0
SYMATTR InstName C5
SYMATTR Value 1n
SYMBOL bi 256 112 M90
WINDOW 0 -32 40 VBottom 0
WINDOW 3 48 16 VCenter 0
SYMATTR InstName Bi
SYMATTR Value I=V(d)*I(Vx)
SYMBOL bv 384 144 R0
WINDOW 3 -112 56 Center 0
WINDOW 0 16 16 Left 0
SYMATTR Value V=V(d)*V(i)
SYMATTR InstName Bx
SYMBOL voltage 688 112 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 -32 56 VBottom 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName Vx
SYMATTR Value 0
SYMBOL res 256 368 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName Rd
SYMATTR Value 1
SYMBOL bi 528 624 M180
WINDOW 0 16 80 Left 0
WINDOW 3 0 -80 Center 0
SYMATTR InstName BrI
SYMATTR Value I=V(i,o)/{2*f*L}
SYMBOL cap 688 544 M0
WINDOW 39 24 56 Left 0
WINDOW 3 8 56 Right 0
SYMATTR SpiceLine Rpar=1
SYMATTR Value 1n
SYMATTR InstName Cr
SYMBOL bi 384 624 R180
WINDOW 0 -16 80 Right 0
WINDOW 3 0 -48 Center 0
SYMATTR InstName BGe
SYMATTR Value I=limit(0,1,V(di)/V(ramp))
SYMBOL cap 272 544 M0
WINDOW 39 24 86 Left 0
WINDOW 3 24 56 Left 0
SYMATTR Value {4/pi/pi/f}
SYMATTR InstName Cd
SYMBOL ind 544 128 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 5 56 VBottom 0
WINDOW 39 -17 56 VBottom 0
SYMATTR InstName Lo
SYMATTR Value {L}
SYMATTR SpiceLine Rser=20m
SYMBOL f 704 256 M90
WINDOW 0 -32 40 VBottom 0
WINDOW 3 32 40 VTop 0
SYMATTR InstName Ffb
SYMATTR Value Vx 1
SYMBOL cap 640 400 M270
WINDOW 39 56 32 VCenter 0
WINDOW 0 32 48 VRight 0
WINDOW 3 32 16 VLeft 0
SYMATTR SpiceLine Rpar=1
SYMATTR InstName Cdi
SYMATTR Value 1n
SYMBOL ind 272 368 M0
WINDOW 0 40 40 Left 0
WINDOW 3 40 64 Left 0
SYMATTR InstName Ld
SYMATTR Value {1/4/f}
SYMBOL bi 784 512 M270
WINDOW 0 32 40 VTop 0
WINDOW 3 -34 16 VBottom 0
SYMATTR InstName BrV
SYMATTR Value I=Vo/{f*L}*n
SYMBOL bv 544 -32 R90
WINDOW 0 35 56 VTop 0
WINDOW 3 -35 56 VBottom 0
SYMATTR InstName BzV
SYMATTR Value V=V(Dz)*V(o)
SYMBOL bi 688 -32 M270
WINDOW 0 -35 40 VBottom 0
WINDOW 3 35 40 VTop 0
SYMATTR InstName BzI
SYMATTR Value I=V(Dz)*I(Vx)
SYMBOL bv 352 -32 M270
WINDOW 0 -35 56 VBottom 0
WINDOW 3 88 192 VLeft 0
SYMATTR InstName B_Dzero
SYMATTR Value V=if(V(c)<1,limit(0,1,1-V(d)/2*(1+V(i)/V(o))-{f*L}*I(Vx)/V(o)),0)
SYMBOL g2 688 384 R270
WINDOW 0 31 30 VLeft 0
WINDOW 3 33 83 VRight 0
SYMATTR InstName Gr
SYMATTR Value 1
SYMBOL cap 1040 -768 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C3
SYMATTR Value 10nF
SYMBOL cap 1088 -688 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C4
SYMATTR Value 470pF
SYMBOL Opamps\\opamp 1072 -640 M0
WINDOW 0 0 40 Bottom 0
WINDOW 3 0 96 Top 0
SYMATTR InstName X2
SYMATTR SpiceLine ""
SYMATTR SpiceLine2 ""
SYMBOL res 1200 -880 R0
SYMATTR InstName R4
SYMATTR Value 10k
SYMBOL res 1200 -736 R0
SYMATTR InstName R5
SYMATTR Value 10k
SYMBOL res 1152 -768 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R6
SYMATTR Value 20k
SYMBOL bv 1056 -112 R0
WINDOW 0 16 16 Left 0
WINDOW 3 16 96 Left 0
WINDOW 123 24 120 Left 0
SYMATTR InstName Bf1
SYMATTR Value V= limit(u(V(Dz)),1,
SYMATTR Value2 (V(i,o)/V(i)+n)*2 )
SYMBOL current 864 -784 R90
WINDOW 0 35 40 VTop 0
WINDOW 3 -48 96 VLeft 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName I1
SYMATTR Value PULSE(0 {di} 50n {1/f-11n} 10n 0 {1/f})
TEXT 576 -296 Left 0 !.tran 0 6m {.1/f} {1/f/5} uic
TEXT 576 -360 Left 0 !.params I1=0.1 I2=1;0.05
TEXT 576 -520 Left 0 !.param f=200k L=35u C=100u
TEXT 576 -552 Left 0 ;Buck Stage Parameters
TEXT 576 -392 Left 0 ;Change I2 to 1A in order to test CCM
TEXT 128 -464 Left 0 !.subckt opamp 1 2 3\nG1 3 0 1 2 10k\nC1 3 0 10u Rpar=10 \nD1 3 0 lim\n.model lim d Ron=1u\n+ Vfwd=1.5 Vrev=10m\n.ends opamp
TEXT 128 -1120 Left 0 ;FIGURE 2-75
TEXT 128 -528 Left 0 !.model Di d\n+ Ron=1m
TEXT 128 -624 Left 0 !.model Si sw\n+ Vt=0.5 Vh=-0.1\n+ Ron=1m Roff=1G
TEXT 600 184 Center 0 ;(35u)
TEXT 120 -200 Left 0 ;Current Mode Control (averaged model - analogspiceman 2007)\nwith Discontinuous Conduction Extension (2010)
TEXT 880 -168 Left 0 ;Discontinuous\nConduction\nAveraged\nModel\nExtension
TEXT 800 288 Left 0 ;Feedback\nCurrent
TEXT 800 448 Left 0 ;Reference\nCurrent
TEXT 800 592 Left 0 ;Compensating\nCurrent Ramp
TEXT 528 496 Bottom 0 ;Natural\nRamp
TEXT 384 496 Bottom 0 ;Effective\nGain
TEXT 176 384 Bottom 0 ;Effective\nSampling\nDelay
TEXT 296 -64 Bottom 0 ;Zero Duty Cycle
TEXT 800 672 Left 0 !.param n=.25
TEXT 696 -1000 Center 0 ;(35u)
TEXT 976 616 Left 0 ;Slope Compensation Control\n0 is no compensation\n1 is 100% compensation\n (I_ramp = Lo downslope)
TEXT 1120 -168 Left 0 ;Effective Operating\nFrequency Multiplier\n(Freq Reduction Due\nto Subharmonic Osc.\nFor Reference Only)
TEXT 1072 -312 Left 0 ;(For Reference\nOnly -  not used)
TEXT 576 -440 Left 0 !.param Vo=5 di=Vo/(f*L)*n
TEXT 576 -472 Left 0 ;Slope Compensation
TEXT 368 -992 Bottom 0 ;99% Duty\nCycle Limit
LINE Normal 256 224 256 320 2
LINE Normal 672 512 672 384 1
LINE Normal 384 512 528 512 1
LINE Normal 776 128 776 240 2
LINE Normal 712 128 712 240 2
LINE Normal 792 -1040 792 -928 2
LINE Normal 856 -1040 856 -928 2
RECTANGLE Normal 96 -224 1376 736
RECTANGLE Normal 96 -1152 1376 -256
RECTANGLE Normal 864 48 144 -144 1