Version 4
SHEET 1 1168 836
WIRE -288 -704 -320 -704
WIRE -176 -704 -208 -704
WIRE -128 -704 -176 -704
WIRE -80 -704 -128 -704
WIRE 64 -704 0 -704
WIRE 80 -704 64 -704
WIRE 128 -704 80 -704
WIRE 272 -704 208 -704
WIRE 416 -704 352 -704
WIRE 464 -704 416 -704
WIRE 480 -704 464 -704
WIRE 592 -704 480 -704
WIRE -176 -672 -176 -704
WIRE 64 -672 64 -704
WIRE 480 -672 480 -704
WIRE 592 -672 592 -704
WIRE 272 -592 240 -592
WIRE 384 -592 352 -592
WIRE -176 -560 -176 -608
WIRE -96 -560 -112 -560
WIRE 64 -560 64 -592
WIRE 480 -560 480 -608
WIRE 592 -560 592 -592
WIRE -112 -528 -112 -560
WIRE 416 -528 416 -704
WIRE 496 -528 464 -528
WIRE 240 -480 240 -592
WIRE 400 -480 240 -480
WIRE 512 -480 480 -480
WIRE 192 -416 176 -416
WIRE -64 -400 -64 -432
WIRE 112 -400 -64 -400
WIRE -112 -384 -112 -432
WIRE 240 -384 240 -480
WIRE 240 -384 176 -384
WIRE 240 -368 240 -384
WIRE 272 -368 240 -368
WIRE 384 -368 352 -368
WIRE -112 -352 -112 -384
WIRE 16 -352 0 -352
WIRE 0 -336 0 -352
WIRE 240 -336 240 -368
WIRE -112 -240 -112 -272
WIRE 0 -240 0 -256
WIRE 240 -240 240 -272
WIRE -288 -48 -304 -48
WIRE -272 -48 -288 -48
WIRE -160 -48 -192 -48
WIRE -128 -48 -160 -48
WIRE -80 -48 -128 -48
WIRE 64 -48 0 -48
WIRE 80 -48 64 -48
WIRE 128 -48 80 -48
WIRE 272 -48 208 -48
WIRE 416 -48 352 -48
WIRE 464 -48 416 -48
WIRE 480 -48 464 -48
WIRE 592 -48 480 -48
WIRE -304 -16 -304 -48
WIRE -160 -16 -160 -48
WIRE 64 -16 64 -48
WIRE 480 -16 480 -48
WIRE 592 -16 592 -48
WIRE 272 64 240 64
WIRE 384 64 352 64
WIRE -304 96 -304 64
WIRE -160 96 -160 48
WIRE 64 96 64 64
WIRE 480 96 480 48
WIRE 592 96 592 64
WIRE 416 128 416 -48
WIRE 528 128 464 128
WIRE 592 128 528 128
WIRE 592 144 592 128
WIRE -112 160 -128 160
WIRE -16 160 -32 160
WIRE -128 176 -128 160
WIRE -128 176 -160 176
WIRE -16 176 -16 160
WIRE 16 176 -16 176
WIRE 144 176 112 176
WIRE 240 176 240 64
WIRE 240 176 208 176
WIRE 400 176 240 176
WIRE 512 176 480 176
WIRE -160 192 -160 176
WIRE -128 208 -128 176
WIRE -112 208 -128 208
WIRE -16 208 -16 176
WIRE -16 208 -48 208
WIRE 592 240 592 224
WIRE -160 288 -160 272
WIRE -144 288 -160 288
WIRE -80 288 -144 288
WIRE 0 288 -80 288
WIRE 176 288 112 288
WIRE 240 288 176 288
WIRE 272 288 240 288
WIRE 384 288 352 288
WIRE -160 320 -160 288
WIRE -80 320 -80 288
WIRE 0 320 0 288
WIRE 112 320 112 288
WIRE 240 320 240 288
WIRE -160 416 -160 384
WIRE -80 416 -80 384
WIRE 0 416 0 400
WIRE 112 416 112 400
WIRE 240 416 240 384
FLAG -128 -48 i
FLAG 464 -48 o
FLAG 16 176 0
FLAG -160 176 d
FLAG -304 96 0
FLAG 112 416 0
FLAG 240 416 0
FLAG 0 416 0
FLAG -160 416 0
FLAG 176 288 ramp
FLAG 80 -48 x
FLAG 64 96 0
FLAG 112 176 0
FLAG 384 288 0
FLAG -112 -240 0
FLAG 64 -560 0
FLAG -112 -560 pwm
FLAG 192 -416 0
FLAG 384 -368 0
FLAG 0 -240 0
FLAG 0 -352 saw
FLAG 384 -592 0
FLAG 240 -240 0
FLAG 240 -592 di`
FLAG -320 -704 s
IOPIN -320 -704 BiDir
FLAG -112 -384 clk
FLAG 80 -704 x`
FLAG -176 -560 0
FLAG 480 -560 0
FLAG 592 -560 0
FLAG 512 -480 0
FLAG 384 64 0
FLAG 480 96 0
FLAG 592 96 0
FLAG 592 240 0
FLAG 512 176 0
FLAG -160 96 0
FLAG -128 -704 i`
FLAG 464 -704 o`
FLAG 496 -528 ref
IOPIN 496 -528 BiDir
FLAG 528 128 ref
FLAG -288 -48 s
FLAG -144 288 c
FLAG -80 416 0
FLAG 240 64 di
FLAG 592 -224 di
FLAG 592 -288 di`
SYMBOL bi -80 -48 M90
WINDOW 0 -32 40 VBottom 0
WINDOW 3 48 40 VCenter 0
WINDOW 123 72 40 VCenter 0
SYMATTR InstName Bi
SYMATTR Value I=I(Vx)*
SYMATTR Value2 limit(0,1,V(d))
SYMBOL bv 64 -32 M0
WINDOW 3 16 96 Left 0
WINDOW 0 16 16 Left 0
WINDOW 123 16 120 Left 0
SYMATTR Value V=V(i)*
SYMATTR InstName Bx
SYMATTR Value2 limit(0,1,V(d))
SYMBOL voltage 256 -48 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 voltage -304 -32 M0
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 Vi
SYMATTR Value {Vi}
SYMBOL bi 112 400 M180
WINDOW 0 16 80 Left 0
WINDOW 3 0 -48 Center 0
SYMATTR InstName BIramp
SYMATTR Value I=max(1u,V(i,o)/{2*f*Lo})
SYMBOL cap 256 320 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 0 400 R180
WINDOW 0 -16 80 Right 0
WINDOW 3 -32 128 Center 0
SYMATTR InstName BFm
SYMATTR Value I=limit(Ic,-Ic-1,V(di)/V(ramp))
SYMBOL cap -144 320 M0
WINDOW 39 24 32 Left 0
WINDOW 3 24 56 Left 0
SYMATTR Value {4/pi/pi/f}
SYMATTR InstName Csp
SYMBOL ind 112 -32 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 5 56 VBottom 0
WINDOW 39 -17 56 VBottom 0
SYMATTR InstName Lo
SYMATTR Value {Lo}
SYMATTR SpiceLine Rser=1u
SYMBOL f 272 64 M90
WINDOW 0 -32 40 VBottom 0
WINDOW 3 32 40 VTop 0
SYMATTR InstName Ffb
SYMATTR Value Vx 1
SYMBOL cap 208 192 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 -144 176 M0
WINDOW 0 40 40 Left 0
WINDOW 3 40 64 Left 0
SYMATTR InstName Lsp
SYMATTR Value {1/4/f}
SYMBOL bi 352 288 M270
WINDOW 0 32 40 VTop 0
WINDOW 3 -34 16 VBottom 0
SYMATTR InstName BVramp
SYMATTR Value I=Vo/{Lo*f}*n
SYMBOL Digital\\srflop -160 -480 R270
WINDOW 3 16 136 VRight 0
WINDOW 0 40 136 VRight 0
WINDOW 123 -4 136 VRight 0
SYMATTR Value tripdt=5n
SYMATTR InstName A2
SYMATTR Value2 td=5n
SYMBOL voltage -112 -368 R0
WINDOW 0 16 16 Left 0
WINDOW 3 0 160 Center 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName Vclk
SYMATTR Value PULSE(0 1 1u 10n 10n 10n {1/f})
SYMBOL bv 64 -688 M0
WINDOW 3 40 56 Left 0
WINDOW 0 16 16 Left 0
SYMATTR Value V=V(pwm)*V(i`)
SYMATTR InstName Bx`
SYMBOL Digital\\diffschmtbuf 176 -464 M0
WINDOW 3 64 -16 Right 0
WINDOW 0 64 32 Right 0
WINDOW 123 64 8 Right 0
SYMATTR Value Vt=0 Vh=0
SYMATTR InstName A1
SYMATTR Value2 tripdt=5n
SYMBOL bi 272 -368 R270
WINDOW 0 32 40 VTop 0
WINDOW 3 -34 80 VBottom 0
SYMATTR InstName BVramp`
SYMATTR Value I=V(saw)*Vo/{Lo*f}*n
SYMBOL voltage 0 -352 M0
WINDOW 0 -16 16 Right 0
WINDOW 3 0 168 Center 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName Vsawtooth
SYMATTR Value PULSE(0 1 {1u+25n} {1/f-20n} 20n 0 {1/f})
SYMBOL ind 112 -688 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 5 56 VBottom 0
WINDOW 39 -17 56 VBottom 0
SYMATTR InstName Lo`
SYMATTR Value {Lo}
SYMATTR SpiceLine Rser=1u
SYMBOL voltage 256 -704 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 f 272 -592 M90
WINDOW 0 -32 40 VBottom 0
WINDOW 3 32 40 VTop 0
SYMATTR InstName Ffb`
SYMATTR Value Vx` 1
SYMBOL cap 256 -336 M0
WINDOW 39 7 56 Right 0
WINDOW 3 24 56 Left 0
SYMATTR SpiceLine Rpar=1
SYMATTR Value 1n
SYMATTR InstName Cdi`
SYMBOL bi -80 -704 M90
WINDOW 0 -32 40 VBottom 0
WINDOW 3 48 16 VCenter 0
SYMATTR InstName Bi`
SYMATTR Value I=V(pwm)*I(Vx`)
SYMBOL ind -304 -688 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 5 56 VBottom 0
SYMATTR InstName Li`
SYMATTR Value {Li}
SYMBOL cap -160 -672 M0
SYMATTR InstName Ci`
SYMATTR Value {Ci}
SYMBOL cap 464 -672 R0
WINDOW 123 24 30 Left 0
SYMATTR InstName Co`
SYMATTR Value {Co}
SYMBOL res 576 -688 R0
SYMATTR InstName Ro`
SYMATTR Value {Ro}
SYMBOL g2 384 -480 M90
WINDOW 0 32 32 VLeft 0
WINDOW 3 32 80 VRight 0
SYMATTR InstName Ge`
SYMATTR Value {Gain}
SYMBOL cap 464 -16 R0
WINDOW 123 24 86 Left 0
SYMATTR InstName Co
SYMATTR Value {Co}
SYMBOL res 576 -32 R0
SYMATTR InstName Ro
SYMATTR Value {Ro}
SYMBOL g2 384 176 M90
WINDOW 0 32 32 VLeft 0
WINDOW 3 32 80 VRight 0
SYMATTR InstName Ge
SYMATTR Value {Gain}
SYMBOL voltage 592 128 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName Vr
SYMATTR Value {Vo}
SYMBOL ind -288 -32 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 5 56 VBottom 0
SYMATTR InstName Li
SYMATTR Value {Li}
SYMBOL cap -176 -16 R0
SYMATTR InstName Ci
SYMATTR Value {Ci}
SYMBOL zener -64 384 R180
WINDOW 0 24 72 Left 0
WINDOW 3 24 0 Left 0
SYMATTR InstName Dsp
SYMATTR Value 1V
SYMBOL Misc\\xvaristor -128 176 R270
WINDOW 0 8 56 VBottom 0
WINDOW 3 32 56 VTop 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName Id
SYMATTR Value TBL(0 0 1 {Rd/(Rd-1)})
SYMATTR Prefix I
SYMBOL cap 576 -288 R0
SYMATTR InstName Ctic
SYMATTR Value 10p
SYMATTR SpiceLine Rser=.1
SYMBOL cap -48 192 R90
WINDOW 0 30 48 VRight 0
WINDOW 3 30 16 VLeft 0
WINDOW 39 40 32 VTop 0
SYMATTR InstName Cd
SYMATTR Value 1n
SYMATTR SpiceLine Rpar={Rd}
TEXT -352 -344 Left 0 ;.ac dec 501 10k 100k
TEXT -352 -368 Left 0 !.tran 0 15m 100n uic
TEXT -352 -320 Left 0 ;.step param Vo 0 9.9 .5
TEXT 368 416 Left 0 ;Slope Compensation Control\n0 is no compensation\n1 is compensation= Lo downslope
TEXT -376 -128 Left 0 ;Current Mode Control (averaged model)
TEXT -376 -784 Left 0 ;Current Mode Control (switched model)
TEXT -344 -496 Left 0 ;To check match\nof models, plot\nI(Vx) and I(Vx`)
TEXT 368 392 Left 0 !.param n=.5 Gain=380
TEXT -360 296 Left 0 !.model 1V d\n+ Ron={150m}\n+ Vrev=1
TEXT 456 288 Left 0 !.param f=100k\n+ Li=2u Ci=5m\n+ Lo=20u Co=5m\n+ Vi=10 Vo=6 Ro=5
TEXT -360 208 Left 0 !.param\n+ Rd=50\n+ Ic=50
LINE Normal -48 48 -96 96 2
LINE Normal -84 -613 -102 -586 2
LINE Normal 240 288 240 176 1
LINE Normal 0 288 112 288 1
LINE Normal 16 -352 208 -352 1
LINE Normal 336 -672 336 -624 2
LINE Normal 288 -672 288 -624 2
LINE Normal 288 -16 288 32 2
LINE Normal 336 -16 336 32 2
RECTANGLE Normal 720 480 -384 -144
RECTANGLE Normal 720 -160 -384 -800