Version 4
SHEET 1 1384 2912
WIRE -128 -304 -272 -304
WIRE 96 -304 -64 -304
WIRE -272 -208 -272 -304
WIRE -272 -208 -544 -208
WIRE -224 -208 -272 -208
WIRE 96 -208 96 -304
WIRE 96 -208 32 -208
WIRE -544 -128 -544 -208
WIRE -224 -128 -416 -128
WIRE 64 -128 32 -128
WIRE -320 -48 -416 -48
WIRE -224 -48 -320 -48
WIRE 96 -48 96 -144
WIRE 96 -48 32 -48
WIRE -544 -16 -544 -48
WIRE -320 -16 -320 -48
WIRE -320 -16 -544 -16
WIRE 640 -16 640 -112
WIRE 768 -16 768 -112
WIRE 768 -16 704 -16
WIRE 64 16 64 -128
WIRE -176 64 -224 64
WIRE -64 64 -96 64
WIRE -16 64 -64 64
WIRE 96 64 96 -48
WIRE 96 64 80 64
WIRE 144 64 96 64
WIRE 160 64 144 64
WIRE 256 64 240 64
WIRE 368 64 256 64
WIRE 432 64 432 -112
WIRE 432 64 368 64
WIRE 528 64 432 64
WIRE 560 64 560 -16
WIRE 560 64 528 64
WIRE 592 64 560 64
WIRE 704 64 704 -16
WIRE 704 64 672 64
WIRE 752 64 704 64
WIRE 432 80 432 64
WIRE 528 80 528 64
WIRE -224 112 -224 64
WIRE 752 112 752 64
WIRE -64 128 -64 64
WIRE 256 128 256 64
WIRE 368 128 368 64
WIRE 144 144 144 64
WIRE 432 160 432 144
WIRE 512 160 512 -112
WIRE 512 160 432 160
WIRE 528 160 512 160
WIRE -320 256 -320 -16
WIRE -224 256 -224 192
WIRE -224 256 -320 256
WIRE -64 256 -64 192
WIRE -64 256 -224 256
WIRE 144 256 144 208
WIRE 144 256 -64 256
WIRE 256 256 256 192
WIRE 256 256 144 256
WIRE 368 256 368 208
WIRE 368 256 256 256
WIRE 528 256 528 240
WIRE 528 256 368 256
WIRE 752 256 752 192
WIRE 752 256 528 256
WIRE -224 288 -224 256
FLAG -224 288 0
SYMBOL voltage -224 96 R0
WINDOW 123 0 0 Left 2
WINDOW 39 24 124 Left 2
SYMATTR SpiceLine Rser=10m
SYMATTR InstName V1
SYMATTR Value 48
SYMBOL nmos -16 16 M90
SYMATTR InstName M1
SYMATTR Value IRF1407
SYMBOL schottky 160 208 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D1
SYMATTR Value MBR20100CT
SYMBOL ind 144 80 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 100µ
SYMATTR SpiceLine Ipk=0 Rser=0 Rpar=0 Cpar=0
SYMBOL polcap 240 128 R0
WINDOW 3 24 56 Left 2
SYMATTR Value 470µ
SYMATTR InstName C1
SYMATTR Description Capacitor
SYMATTR Type cap
SYMATTR SpiceLine V=63 Irms=800m Rser=0.081 Lser=0 mfg="Nichicon" pn="UPR1J471MRH" type="Al electrolytic"
SYMBOL voltage -416 -144 R0
WINDOW 3 24 96 Invisible 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
WINDOW 0 31 57 Left 2
SYMATTR Value PULSE(0 5 0 0 0 8.5µ 17µ 0)
SYMATTR InstName V2_PWM
SYMBOL PowerProducts\\LTC4440 -96 -128 R0
SYMATTR InstName U1
SYMBOL voltage -544 -144 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value 15
SYMBOL polcap 80 -208 R0
WINDOW 3 24 56 Left 2
SYMATTR Value 470µ
SYMATTR InstName C2
SYMATTR Description Capacitor
SYMATTR Type cap
SYMATTR SpiceLine V=2 Irms=1.8 Rser=0.04 Lser=0 mfg="KEMET" pn="T520V477M002ASE040" type="Tantalum"
SYMBOL diode -128 -288 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D2
SYMATTR Value MUR460
SYMBOL Misc\\EuropeanResistor 352 112 R0
SYMATTR InstName R1
SYMATTR Value 100
SYMATTR SpiceLine tol=1 pwr=50
SYMBOL polcap -80 128 R0
WINDOW 3 24 56 Left 2
SYMATTR Value 470µ
SYMATTR InstName C3
SYMATTR Description Capacitor
SYMATTR Type cap
SYMATTR SpiceLine V=63 Irms=800m Rser=0.081 Lser=0 mfg="Nichicon" pn="UPR1J471MRH" type="Al electrolytic"
SYMBOL ind -192 80 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L2
SYMATTR Value 50µ
SYMBOL Misc\\EuropeanResistor 688 48 R90
WINDOW 0 5 56 VBottom 2
WINDOW 3 27 56 VTop 2
SYMATTR InstName R1mess
SYMATTR Value 0.0015
SYMBOL Misc\\EuropeanResistor 512 64 R0
SYMATTR InstName R2mess
SYMATTR Value 1k
SYMBOL Misc\\EuropeanResistor 512 144 R0
SYMATTR InstName R3mess
SYMATTR Value 9k
SYMBOL polcap 640 0 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C4
SYMATTR Value 0.47µ
SYMATTR Description Capacitor
SYMATTR Type cap
SYMATTR SpiceLine V=50 Irms=22m Rser=3.9 Lser=0 mfg="Nichicon" pn="UPL1HR47MAH" type="Al electrolytic"
SYMBOL polcap 416 80 R0
WINDOW 3 24 56 Left 2
SYMATTR Value 0.47µ
SYMATTR InstName C5
SYMATTR Description Capacitor
SYMATTR Type cap
SYMATTR SpiceLine V=50 Irms=22m Rser=3.9 Lser=0 mfg="Nichicon" pn="UPL1HR47MAH" type="Al electrolytic"
SYMBOL Misc\\EuropeanResistor 544 0 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R3
SYMATTR Value 500
SYMATTR SpiceLine tol=0.1 pwr=0.6
SYMBOL Misc\\EuropeanResistor 736 96 R0
SYMATTR InstName Rlast
SYMATTR Value 5
TEXT 512 344 Left 2 !.tran 0.02
TEXT 648 -112 Left 2 ;50A->75mV
TEXT 440 -112 Left 2 ;Ua/10