Version 4
SHEET 1 1792 1876
WIRE -512 -608 -512 -656
WIRE -352 -608 -352 -656
WIRE -192 -608 -192 -656
WIRE -80 -608 -80 -656
WIRE -512 -528 -592 -528
WIRE -352 -528 -512 -528
WIRE -192 -528 -352 -528
WIRE -80 -528 -192 -528
WIRE -688 -384 -688 -432
WIRE -512 -384 -512 -432
WIRE -352 -384 -352 -432
WIRE -192 -384 -192 -432
WIRE -80 -384 -80 -432
WIRE -688 -256 -688 -304
WIRE -592 -256 -592 -528
WIRE -592 -256 -688 -256
WIRE -512 -256 -512 -304
WIRE -512 -256 -592 -256
WIRE -352 -256 -352 -304
WIRE -352 -256 -512 -256
WIRE -192 -256 -192 -304
WIRE -192 -256 -352 -256
WIRE -80 -256 -80 -304
WIRE -80 -256 -192 -256
WIRE -592 0 -624 0
WIRE -464 0 -592 0
WIRE -208 0 -288 0
WIRE 64 0 16 0
WIRE 176 0 128 0
WIRE 304 0 256 0
WIRE 432 0 368 0
WIRE 560 0 432 0
WIRE 640 0 560 0
WIRE 704 0 640 0
WIRE 432 32 432 0
WIRE -464 64 -464 0
WIRE -416 64 -464 64
WIRE -288 64 -288 0
WIRE -288 64 -320 64
WIRE -592 96 -592 0
WIRE -208 96 -256 96
WIRE 560 96 560 0
WIRE -416 144 -464 144
WIRE -288 144 -320 144
WIRE 432 144 432 96
WIRE 640 160 640 0
WIRE 720 160 640 160
WIRE 720 192 720 160
WIRE -592 240 -592 176
WIRE -464 240 -464 144
WIRE -464 240 -592 240
WIRE -288 240 -288 144
WIRE -288 240 -464 240
WIRE -32 240 -32 128
WIRE -32 240 -288 240
WIRE 432 240 432 208
WIRE 432 240 -32 240
WIRE 560 240 560 160
WIRE 560 240 432 240
WIRE 640 240 640 160
WIRE -592 272 -592 240
WIRE 336 304 240 304
WIRE 496 304 400 304
WIRE 720 304 720 272
WIRE 240 400 240 304
WIRE 272 400 240 400
WIRE 368 400 352 400
WIRE 496 400 496 304
WIRE 496 400 432 400
WIRE 640 400 640 304
WIRE 720 400 720 368
WIRE 720 400 640 400
WIRE 496 480 496 400
WIRE 496 480 400 480
WIRE 640 480 640 400
WIRE 640 480 496 480
WIRE -256 496 -256 96
WIRE -192 496 -256 496
WIRE -96 496 -192 496
WIRE 64 496 -16 496
WIRE 240 496 240 400
WIRE 240 496 64 496
WIRE 336 496 240 496
WIRE 432 512 400 512
WIRE -192 528 -192 496
WIRE 432 544 432 512
WIRE 640 544 640 480
WIRE 64 576 64 496
WIRE 64 576 48 576
WIRE -192 608 -192 592
WIRE 432 656 432 624
WIRE 640 656 640 608
WIRE -192 704 -192 688
FLAG -592 272 0
FLAG 704 0 OUT
IOPIN 704 0 Out
FLAG -624 0 IN
IOPIN -624 0 In
FLAG 48 576 Verr
IOPIN 48 576 Out
FLAG 432 656 0
FLAG 640 656 0
FLAG -192 704 0
FLAG -352 -528 0
FLAG -512 -432 Rpz
FLAG -352 -432 Rled
FLAG -192 -432 G
FLAG -192 -656 K
FLAG -352 -656 Cpole
FLAG -512 -656 Czero
FLAG -80 -432 fpole
FLAG -688 -432 fzero
FLAG -80 -656 RU
SYMBOL ind2 160 16 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 4 56 VBottom 0
SYMATTR InstName L1
SYMATTR Value 100µH
SYMBOL res2 544 96 R0
SYMATTR InstName R3
SYMATTR Value 4
SYMBOL Opamps\\opamp 368 432 M0
WINDOW 0 278 -85 Right 0
WINDOW 39 278 -23 Right 0
WINDOW 40 278 -58 Right 0
SYMATTR InstName X1
SYMATTR SpiceLine Aol=1K
SYMATTR SpiceLine2 GBW=2Meg
SYMBOL voltage -592 80 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V4
SYMATTR Value 380
SYMBOL voltage 432 528 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value 2.5V
SYMBOL res2 368 -16 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName R5
SYMATTR Value 20m
SYMBOL res2 624 544 R0
SYMATTR InstName Rlower
SYMATTR Value 10k
SYMATTR SpiceLine tol=1 pwr=.25
SYMBOL res2 624 240 R0
WINDOW 0 -110 44 Left 0
WINDOW 3 -115 83 Left 0
SYMATTR InstName Rupper
SYMATTR Value {Rupper}
SYMBOL res2 416 32 R0
SYMATTR InstName Resr
SYMATTR Value 100m
SYMBOL cap 416 144 R0
SYMATTR InstName Cout
SYMATTR Value 2200µF
SYMBOL ind2 -112 512 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 4 56 VBottom 0
SYMATTR InstName LoL
SYMATTR Value 1kH
SYMBOL cap -208 528 R0
WINDOW 0 46 21 Left 0
WINDOW 3 43 53 Left 0
SYMATTR InstName CoL
SYMATTR Value 1kF
SYMBOL voltage -192 592 R0
WINDOW 0 46 43 Left 0
WINDOW 123 45 76 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value2 AC 1
SYMATTR Value ""
SYMBOL XFMR1 -368 96 R0
SYMATTR InstName U1
SYMATTR SpiceLine RATIO=.134
SYMBOL BUCK-CCM-VM -64 48 R0
SYMATTR InstName X2
SYMBOL res 704 176 R0
SYMATTR InstName R1
SYMATTR Value {R3}
SYMBOL cap 704 304 R0
SYMATTR InstName C3
SYMATTR Value {C3}
SYMBOL cap 400 288 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C2
SYMATTR Value {C2}
SYMBOL cap 432 384 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C1
SYMATTR Value {C1}
SYMBOL res 368 384 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R2
SYMATTR Value {R2}
SYMBOL diode 64 16 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName D1
SYMATTR Value mur1540
SYMBOL voltage -512 -624 R0
WINDOW 123 11 -41 Left 0
WINDOW 39 0 0 Left 0
WINDOW 3 -77 119 Left 0
SYMATTR Value {Czero*10000000000}
SYMATTR InstName V7
SYMBOL voltage -352 -624 R0
WINDOW 123 11 -41 Left 0
WINDOW 39 0 0 Left 0
WINDOW 3 24 119 Left 0
SYMATTR Value {Cpole*10000000000}
SYMATTR InstName V8
SYMBOL voltage -192 -624 R0
WINDOW 123 11 -41 Left 0
WINDOW 39 0 0 Left 0
WINDOW 3 24 44 Left 0
SYMATTR Value {K}
SYMATTR InstName V9
SYMBOL voltage -512 -400 R0
WINDOW 123 11 -41 Left 0
WINDOW 39 0 0 Left 0
WINDOW 3 41 43 Left 0
SYMATTR Value {Rpz}
SYMATTR InstName V10
SYMBOL voltage -352 -400 R0
WINDOW 123 11 -41 Left 0
WINDOW 39 0 0 Left 0
WINDOW 3 38 44 Left 0
SYMATTR Value {Rled}
SYMATTR InstName V11
SYMBOL voltage -192 -400 R0
WINDOW 123 11 -41 Left 0
WINDOW 39 0 0 Left 0
WINDOW 3 38 45 Left 0
SYMATTR Value {G}
SYMATTR InstName V12
SYMBOL voltage -688 -400 R0
WINDOW 123 11 -41 Left 0
WINDOW 39 0 0 Left 0
WINDOW 3 24 44 Left 0
SYMATTR Value {Fzero}
SYMATTR InstName V13
SYMBOL voltage -80 -400 R0
WINDOW 123 11 -41 Left 0
WINDOW 39 0 0 Left 0
WINDOW 3 34 44 Left 0
SYMATTR Value {Fpole}
SYMATTR InstName V14
SYMBOL voltage -80 -624 R0
WINDOW 123 11 -41 Left 0
WINDOW 39 0 0 Left 0
WINDOW 3 40 44 Left 0
SYMATTR Value {Rupper}
SYMATTR InstName V15
TEXT 224 552 Left 0 !.lib opamp.sub
TEXT 848 -368 Left 0 !;ac oct 100 10 1meg
TEXT 840 -328 Left 0 !.include application.lib
TEXT 848 -296 Left 0 !.tran 0 10m 1u
TEXT 848 -256 Left 0 !.param Vout = 50\n \n.param Rupper = (Vout -2.5)/250u\n.param fc = 10.0k\n.param pm = 100\n.param Gfc = -2.0\n.param pfc = -93\n \n.param G = 10**(-Gfc/20)\n.param Boost = pm-(pfc)-90\n.param pi = 3.14159\n.param K = (tan((Boost/4+45)*pi/180))**2\n.param C2 = 1/(2*pi*fc*G*Rupper)\n.param C1 = C2*(K-1)\n.param R2 = sqrt(K)/(2*pi*fc*C1)\n.param R3 =Rupper/(K-1)\n.param C3 = 1/(2*pi*fc*sqrt(K)*R3)\n.param Fzero = fc/sqrt(K)\n.param Fpole =sqrt( K) * fc\n \n.param Rpullup = 470\n \n.param a =(Fpole**2+fc**2)*(fc**2+Fzero**2)*(Fpole**2+fc**2)*(fc**2+Fzero**2)\n.param b =Fpole**2*Fpole**2+Fpole**2* fc**2+fc**2*Fpole**2+fc**4\n \n.param Rled = (sqrt(a)/b)*Rpullup*Fpole*Fpole/(Fzero*fc*G)\n.param Czero = 1/(2*pi*Fzero*Rupper)\n.param Cpole = 1/(2*pi*Fpole*Rpullup)\n.param Cpz = (Fpole-Fzero)/(2*Fzero*Fpole*Rled*pi)\n.param Rpz = 1/(2*pi*Fpole*Cpz)\n.param CTR = 1