Version 4
SHEET 1 1396 712
WIRE 512 160 544 160
WIRE 576 224 576 256
WIRE 720 320 720 352
WIRE 720 352 576 352
WIRE 576 352 576 320
WIRE -16 64 0 64
WIRE 96 64 160 64
WIRE -64 320 -64 352
WIRE -64 352 128 352
WIRE -96 352 -96 368
WIRE 0 192 -32 192
WIRE -64 192 -64 240
WIRE 80 192 128 192
WIRE 128 256 128 192
WIRE 128 320 128 352
WIRE 128 352 352 352
WIRE -352 352 -208 352
WIRE 64 -256 128 -256
WIRE 848 -256 848 -160
WIRE 848 -80 848 -32
WIRE 848 224 848 352
WIRE 848 352 992 352
WIRE 992 -256 848 -256
WIRE 848 144 848 96
WIRE 736 32 752 32
WIRE 720 96 640 96
WIRE 640 96 640 32
WIRE 784 96 848 96
WIRE 640 32 656 32
WIRE -64 80 -64 192
WIRE -64 -16 -64 -256
WIRE -64 -256 -32 -256
WIRE -96 -256 -64 -256
WIRE 992 48 992 -256
WIRE 992 -256 1008 -256
WIRE 992 128 992 352
WIRE -208 -256 -176 -256
WIRE -368 -256 -352 -256
WIRE -352 -256 -352 0
WIRE -352 80 -352 352
WIRE -208 112 -208 -80
WIRE -208 -256 -352 -256
WIRE -208 176 -208 352
WIRE -208 352 -96 352
WIRE 192 192 160 192
WIRE 512 96 544 96
WIRE 608 224 576 224
WIRE 720 224 688 224
WIRE 720 224 720 256
WIRE -208 -80 -208 -256
WIRE 352 -80 -208 -80
WIRE 848 352 720 352
WIRE -96 352 -64 352
WIRE 128 -256 128 -224
WIRE 128 -160 128 -128
WIRE 128 -256 848 -256
WIRE -32 -256 0 -256
WIRE -32 192 -64 192
WIRE 0 64 16 64
WIRE 160 192 128 192
WIRE 544 32 512 32
WIRE 752 32 768 32
WIRE 160 64 192 64
WIRE 352 -80 352 -32
WIRE 352 288 352 352
WIRE 352 352 576 352
WIRE 576 224 544 224
WIRE 544 224 512 224
WIRE 544 160 720 160
WIRE 544 96 640 96
WIRE 576 32 544 32
WIRE 848 -32 576 -32
WIRE 576 -32 576 32
WIRE 720 160 720 224
WIRE 848 -32 848 32
WIRE 848 32 832 32
WIRE 848 32 848 96
FLAG -96 368 0
FLAG 1008 -256 Vout
IOPIN 1008 -256 Out
FLAG -368 -256 Vin
IOPIN -368 -256 In
FLAG 128 -128 0
FLAG -32 -256 D
FLAG -32 192 S
FLAG 0 64 G
FLAG 160 192 Ifb
FLAG 544 224 osc
FLAG 544 32 Vfb
FLAG 544 160 ref
FLAG 544 96 err
FLAG 752 32 x
FLAG 160 64 out
SYMBOL UC3845B 352 128 M0
SYMATTR InstName U1
SYMBOL voltage -352 -16 R0
WINDOW 123 32 56 VTop 0
WINDOW 39 16 96 Left 0
WINDOW 3 48 64 Left 0
WINDOW 0 48 32 Left 0
SYMATTR SpiceLine Rser=10m
SYMATTR Value 15
SYMATTR InstName V1
SYMBOL res 704 208 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R1
SYMATTR Value 4k
SYMBOL cap 560 256 R0
SYMATTR InstName C1
SYMATTR Value 2n2
SYMBOL cap 704 256 R0
SYMATTR InstName C2
SYMATTR Value .1µ
SYMBOL res 0 80 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R2
SYMATTR Value 100
SYMBOL res -80 224 R0
SYMATTR InstName R3
SYMATTR Value .25
SYMBOL res -16 208 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R4
SYMATTR Value 1k
SYMBOL cap 144 256 M0
SYMATTR InstName C3
SYMATTR Value 220p
SYMBOL diode 0 -240 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName D1
SYMATTR Value 1N5819
SYMBOL res 832 -176 R0
SYMATTR InstName R5
SYMATTR Value 20k
SYMBOL res 832 128 R0
SYMATTR InstName R6
SYMATTR Value 2k49
SYMBOL cap 112 -224 R0
SYMATTR InstName C4
SYMATTR Value 560µ
SYMATTR SpiceLine V=35 Irms=1.4 Rser=0.042 MTBF=2000 Lser=0 mfg="Panasonic" pn="ECA1VFQ561" type="Al electrolytic" ppPkg=1
SYMBOL res 640 48 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R7
SYMATTR Value 150k
SYMBOL cap 768 16 M90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C5
SYMATTR Value 1n
SYMBOL cap 720 80 M90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C6
SYMATTR Value 100p
SYMBOL nmos -16 -16 M0
SYMATTR InstName M1
SYMATTR Value FDS6680A
SYMBOL ind -192 -240 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 5 56 VBottom 0
SYMATTR InstName L1
SYMATTR Value 50µ
SYMATTR SpiceLine Ipk=7 Rser=0.02 Rpar=38000 Cpar=5.86p mfg="Gowanda" pn="894AT5002V"
SYMBOL res 976 32 R0
SYMATTR InstName R8
SYMATTR Value 15
SYMBOL polcap -224 112 R0
WINDOW 3 24 64 Left 0
SYMATTR Value 220µ
SYMATTR InstName C7
SYMATTR Description Capacitor
SYMATTR Type cap
SYMATTR SpiceLine V=25 Irms=575m Rser=0.12 MTBF=1000 Lser=0 mfg="Panasonic" pn="ECA1EFQ221L" type="Al electrolytic" ppPkg=1
TEXT 352 -104 Center 0 !.include uc384x.lib
TEXT -352 -320 Left 0 !.tran 0 4m 10n 1u uic
TEXT -352 -352 Left 0 !.options Trtol=9 Method=trapmod
TEXT 96 -352 Left 0 !.save V(Vout) V(err) I(L1)
RECTANGLE Normal 1120 416 -464 -384