Version 4
SHEET 1 1680 680
WIRE -80 -80 -96 -80
WIRE -64 -80 -80 -80
WIRE 0 -80 -16 -80
WIRE 16 -80 0 -80
WIRE 128 -80 96 -80
WIRE 208 -80 128 -80
WIRE 704 -80 688 -80
WIRE 720 -80 704 -80
WIRE 832 -80 800 -80
WIRE 912 -80 832 -80
WIRE -96 -48 -96 -80
WIRE 128 -48 128 -80
WIRE 208 -48 208 -80
WIRE 832 -48 832 -80
WIRE 912 -48 912 -80
WIRE 432 32 416 32
WIRE -96 64 -96 32
WIRE 128 64 128 16
WIRE 832 64 832 16
WIRE 368 80 416 32
WIRE 560 80 512 32
WIRE -80 144 -96 144
WIRE -64 144 -80 144
WIRE 208 144 208 32
WIRE 240 144 208 144
WIRE 256 144 240 144
WIRE 352 144 336 144
WIRE 368 144 368 80
WIRE 368 144 352 144
WIRE 384 144 368 144
WIRE 560 144 560 80
WIRE 560 144 544 144
WIRE 576 144 560 144
WIRE 624 144 576 144
WIRE 672 144 624 144
WIRE 912 144 912 32
WIRE 960 144 912 144
WIRE 976 144 960 144
WIRE 1072 144 1040 144
WIRE 1088 144 1072 144
WIRE 1280 144 1248 144
WIRE 1328 144 1280 144
WIRE 1376 144 1328 144
WIRE -96 176 -96 144
WIRE 576 176 576 144
WIRE 672 176 672 144
WIRE 1280 176 1280 144
WIRE 1376 176 1376 144
WIRE 208 272 208 144
WIRE 912 272 912 144
WIRE -96 288 -96 256
WIRE 576 288 576 240
WIRE 672 288 672 256
WIRE 1280 288 1280 240
WIRE 1376 288 1376 256
WIRE 1152 352 1136 352
WIRE 1184 352 1152 352
WIRE 1280 368 1248 368
WIRE 1296 368 1280 368
WIRE 208 384 208 352
WIRE 448 384 432 384
WIRE 464 384 448 384
WIRE 912 384 912 352
WIRE 1152 384 1136 384
WIRE 1184 384 1152 384
WIRE 432 416 432 384
WIRE 1136 416 1136 384
WIRE 432 528 432 496
WIRE 1136 528 1136 496
FLAG 208 384 0
FLAG -96 64 0
FLAG 576 288 0
FLAG 432 528 0
FLAG 448 384 Dz
FLAG 0 -80 i
FLAG 624 144 o
FLAG 352 144 x
FLAG 240 144 y
FLAG -80 144 D
FLAG -96 288 0
FLAG 1136 528 0
FLAG 1152 352 D
FLAG 1152 384 osc
FLAG 1280 368 pwm
FLAG 672 288 0
FLAG 912 384 0
FLAG 1280 288 0
FLAG 1328 144 o2
FLAG 1072 144 x2
FLAG 960 144 y2
FLAG 1376 288 0
FLAG -80 -80 i
FLAG 128 64 0
FLAG 704 -80 i
FLAG 832 64 0
SYMBOL voltage -96 -64 R0
SYMATTR InstName Vi
SYMATTR Value 10
SYMBOL voltage -96 160 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V_D
SYMATTR Value PWL(0 0 1 1)
SYMBOL ind 0 -64 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 5 56 VBottom 0
SYMATTR InstName Li
SYMATTR Value {L}
SYMATTR SpiceLine Rser=10m Rpar=1
SYMBOL cap 144 -48 M0
WINDOW 3 24 56 Left 0
WINDOW 123 24 84 Left 0
SYMATTR Value {C*10}
SYMATTR Value2 ic=10
SYMATTR InstName Ci
SYMBOL bi 208 -48 R0
WINDOW 0 32 16 Left 0
WINDOW 3 32 64 Left 0
SYMATTR InstName B1
SYMATTR Value I= V(D)*I(vLo)
SYMBOL bv 208 256 R0
WINDOW 0 32 32 Left 0
WINDOW 3 32 80 Left 0
SYMATTR InstName B2
SYMATTR Value V= V(D)*V(i)
SYMBOL bi 512 32 M270
WINDOW 0 -35 40 VBottom 0
WINDOW 3 35 40 VTop 0
SYMATTR InstName B4
SYMATTR Value I= V(Dz)*I(vLo)
SYMBOL bv 352 144 M270
WINDOW 0 32 56 VTop 0
WINDOW 3 -32 56 VBottom 0
SYMATTR InstName B3
SYMATTR Value V= V(Dz)*V(o)
SYMBOL voltage 368 144 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 -32 56 VBottom 0
SYMATTR InstName vLo
SYMATTR Value 0
SYMBOL ind 448 160 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 5 56 VBottom 0
SYMATTR InstName Lo
SYMATTR Value {L}
SYMATTR SpiceLine Rser=2m
SYMBOL cap 560 176 R0
SYMATTR InstName Co
SYMATTR Value {C}
SYMBOL res 656 160 R0
SYMATTR InstName Ro
SYMATTR Value {R}
SYMBOL bv 432 400 R0
WINDOW 0 32 32 Left 0
WINDOW 3 32 80 Left 0
WINDOW 123 32 104 Left 0
SYMATTR InstName B_Dz
SYMATTR Value V= limit( 0, 1,
SYMATTR Value2 1-V(D)/2*(1+V(i)/V(o))-f*L*I(vLo)/V(o) )
SYMBOL ind 704 -64 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 5 56 VBottom 0
SYMATTR InstName Li2
SYMATTR Value {L}
SYMATTR SpiceLine Rser=10m Rpar=1
SYMBOL cap 848 -48 M0
WINDOW 3 24 56 Left 0
WINDOW 123 24 84 Left 0
SYMATTR Value {C*10}
SYMATTR Value2 ic=10
SYMATTR InstName Ci2
SYMBOL bi 912 -48 R0
WINDOW 3 32 64 Left 0
WINDOW 0 32 16 Left 0
SYMATTR Value I=V(pwm)*I(vLo2)
SYMATTR InstName B6
SYMBOL bv 912 256 R0
WINDOW 0 32 32 Left 0
WINDOW 3 32 80 Left 0
SYMATTR InstName B7
SYMATTR Value V=V(pwm)*V(i)
SYMBOL diode 976 160 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName D1
SYMATTR Value Di
SYMBOL voltage 1072 144 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 -32 56 VBottom 0
SYMATTR InstName vLo2
SYMATTR Value 0
SYMBOL ind 1152 160 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 5 56 VBottom 0
SYMATTR InstName Lo2
SYMATTR Value {L}
SYMATTR SpiceLine Rser=2m Rpar=10k
SYMBOL cap 1264 176 R0
SYMATTR InstName Co2
SYMATTR Value {C}
SYMBOL res 1360 160 R0
SYMATTR InstName Ro2
SYMATTR Value {R}
SYMBOL voltage 1136 400 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
WINDOW 0 32 32 Left 0
WINDOW 3 32 80 Left 0
SYMATTR InstName Vosc
SYMATTR Value PULSE(0 1 1u {1/f-5n} 5n 0 {1/f})
SYMBOL Digital\\diffschmtbuf 1184 304 R0
WINDOW 0 32 32 Left 0
WINDOW 3 32 96 Left 0
SYMATTR InstName A1
SYMATTR Value Vh=0 tau=5n
SYMATTR Value2 Vt=0 tripdt=5n
TEXT -120 480 Left 0 !.tran 0 .99 1m {1/f/10} startup uic
TEXT -120 432 Left 0 !.param f=5k L=250u C=1m R=5
TEXT 944 224 Left 0 !.model Di d(Ron=1m)
TEXT -120 512 Left 0 !.opt plotwinsize=0
TEXT 304 -208 Center 0 ;Buck Stage Averaged PWM Model - analogspiceman 2010\nIncluding Discontinuous Conduction Mode Extension\n(valid for both large signal transient and small signal ac analyses)
TEXT 1072 -208 Center 0 ;Buck Stage Idealized Switched PWM Model\nIncluding Discontinuous Conduction Mode Extension\n(valid for only large signal transient analysis)
TEXT -16 120 Left 0 ;Duty Cycle\nInput
TEXT 496 360 Left 0 ;Zero Conduction\nDuty Cycle Calculator
TEXT 1328 344 Left 0 ;Duty Cycle\nto PWM
TEXT -120 400 Left 0 ;Buck Stage Parameters