Version 4 SHEET 1 1936 680 WIRE 208 -1440 -144 -1440 WIRE 464 -1440 288 -1440 WIRE 768 -1440 464 -1440 WIRE -16 -1376 -64 -1376 WIRE 112 -1376 48 -1376 WIRE 528 -1360 496 -1360 WIRE 640 -1360 608 -1360 WIRE 656 -1360 640 -1360 WIRE 768 -1360 768 -1440 WIRE 768 -1360 720 -1360 WIRE 848 -1360 768 -1360 WIRE 944 -1360 848 -1360 WIRE 976 -1360 944 -1360 WIRE 1088 -1360 976 -1360 WIRE 848 -1328 848 -1360 WIRE 976 -1328 976 -1360 WIRE 1088 -1328 1088 -1360 WIRE -144 -1312 -560 -1312 WIRE -64 -1312 -64 -1376 WIRE -64 -1312 -144 -1312 WIRE -16 -1312 -64 -1312 WIRE 112 -1312 112 -1376 WIRE 112 -1312 64 -1312 WIRE 176 -1312 112 -1312 WIRE 304 -1312 224 -1312 WIRE 384 -1312 304 -1312 WIRE 432 -1312 384 -1312 WIRE 480 -1312 432 -1312 WIRE 496 -1312 496 -1360 WIRE 496 -1312 480 -1312 WIRE 432 -1280 432 -1312 WIRE 304 -1264 304 -1312 WIRE 496 -1232 496 -1312 WIRE 976 -1232 976 -1264 WIRE 1088 -1232 1088 -1248 WIRE 1088 -1232 976 -1232 WIRE -336 -1216 -352 -1216 WIRE -144 -1216 -144 -1248 WIRE -144 -1216 -256 -1216 WIRE -112 -1216 -144 -1216 WIRE 176 -1216 176 -1312 WIRE 176 -1216 128 -1216 WIRE 976 -1216 976 -1232 WIRE 640 -1168 640 -1360 WIRE -352 -1152 -464 -1152 WIRE -192 -1152 -192 -1392 WIRE -192 -1152 -352 -1152 WIRE -112 -1152 -192 -1152 WIRE 224 -1152 224 -1312 WIRE 224 -1152 128 -1152 WIRE 976 -1104 976 -1136 WIRE -160 -1088 -240 -1088 WIRE -112 -1088 -160 -1088 WIRE 192 -1088 128 -1088 WIRE 400 -1088 272 -1088 WIRE 592 -1088 400 -1088 WIRE -464 -1072 -464 -1152 WIRE -160 -1072 -160 -1088 WIRE 768 -1056 768 -1360 WIRE -560 -1024 -560 -1312 WIRE -320 -1024 -384 -1024 WIRE -112 -1024 -320 -1024 WIRE 304 -1024 304 -1200 WIRE 304 -1024 128 -1024 WIRE -320 -1008 -320 -1024 WIRE -384 -992 -384 -1024 WIRE -240 -992 -240 -1088 WIRE -160 -960 -160 -992 WIRE 368 -960 -160 -960 WIRE 976 -960 976 -1024 WIRE 976 -960 368 -960 WIRE 976 -896 976 -960 WIRE -320 -864 -320 -928 WIRE 176 -864 176 -1216 WIRE 176 -864 -320 -864 WIRE 224 -864 176 -864 WIRE -560 -800 -560 -960 WIRE -464 -800 -464 -992 WIRE -464 -800 -560 -800 WIRE -384 -800 -384 -928 WIRE -384 -800 -464 -800 WIRE -240 -800 -240 -928 WIRE -240 -800 -384 -800 WIRE 224 -800 -240 -800 WIRE 304 -800 304 -1024 WIRE 304 -800 224 -800 WIRE 432 -800 432 -1216 WIRE 432 -800 304 -800 WIRE 496 -800 496 -1152 WIRE 496 -800 432 -800 WIRE 640 -800 640 -1072 WIRE 640 -800 496 -800 WIRE 768 -800 768 -976 WIRE 768 -800 640 -800 WIRE 848 -800 848 -1264 WIRE 848 -800 768 -800 WIRE 976 -800 976 -816 WIRE 976 -800 848 -800 WIRE 496 -752 496 -800 WIRE 496 -752 480 -752 FLAG 368 -960 IS FLAG 464 -1440 27.5vout FLAG 400 -1088 gate-drive FLAG 384 -1312 13.6in FLAG 480 -1312 Vin IOPIN 480 -1312 In FLAG 496 -752 0 FLAG 640 -1360 D FLAG 848 -800 0 FLAG 944 -1360 27.5vout SYMBOL SmpsAdd\\UC3845B1 32 -1120 R0 SYMATTR InstName U3 SYMBOL res -240 -1200 M270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R7 SYMATTR Value 150k SYMBOL cap -336 -1152 R180 WINDOW 0 24 56 Left 2 WINDOW 3 24 8 Left 2 SYMATTR InstName C8 SYMATTR Value 1n SYMBOL Pot&Sw\\potentiometer -128 -1456 R90 SYMATTR InstName U4 SYMBOL res -480 -1088 R0 SYMATTR InstName R8 SYMATTR Value 1k SYMBOL diode -128 -1248 R180 WINDOW 0 24 64 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D4 SYMBOL res -176 -1088 R0 SYMATTR InstName R9 SYMATTR Value 1K SYMBOL cap -256 -992 R0 SYMATTR InstName C10 SYMATTR Value 220p SYMBOL res -336 -1024 R0 SYMATTR InstName R10 SYMATTR Value 5.6K SYMBOL cap -400 -992 R0 SYMATTR InstName C11 SYMATTR Value 2.2n SYMBOL polcap -576 -1024 R0 SYMATTR InstName C12 SYMATTR Value 2.2µ SYMATTR Description Capacitor SYMATTR Type cap SYMATTR SpiceLine V=50 Irms=18m Rser=10 Lser=0 mfg="Nichicon" pn="UPR1H2R2MAH" type="Al electrolytic" SYMBOL diode -16 -1360 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D6 SYMBOL cap 208 -864 R0 SYMATTR InstName C14 SYMATTR Value .1µ SYMBOL res 80 -1328 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R11 SYMATTR Value 1MEG SYMBOL res 288 -1104 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R12 SYMATTR Value 100 SYMBOL polcap 288 -1264 R0 WINDOW 3 24 56 Left 2 SYMATTR Value 1000µ SYMATTR InstName C13 SYMATTR Description Capacitor SYMATTR Type cap SYMATTR SpiceLine V=35 Irms=995m Rser=0.067 Lser=0 mfg="Nichicon" pn="UPR1V102MRH" type="Al electrolytic" SYMBOL cap 416 -1280 R0 SYMATTR InstName C15 SYMATTR Value .1µ SYMBOL voltage 496 -1248 R0 WINDOW 123 32 56 VTop 2 WINDOW 39 16 96 Left 2 WINDOW 3 48 64 Left 2 WINDOW 0 48 32 Left 2 SYMATTR SpiceLine Rser=1m SYMATTR Value 13.6 SYMATTR InstName V1 SYMBOL ind 512 -1344 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value 7µ SYMATTR SpiceLine Ipk=21 Rser=0.005608 Rpar=1680 Cpar=9.79p mfg="Wurth Elektronik" pn="7443630700 WE-HCF 2013" SYMBOL nmos 592 -1168 R0 SYMATTR InstName M1 SYMATTR Value IRF1404Z SYMBOL res 960 -912 R0 SYMATTR InstName R1 SYMATTR Value .2 SYMATTR SpiceLine tol=1 pwr=10 SYMBOL schottky 656 -1344 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D1 SYMATTR Value MBRB2545CT SYMATTR Description Diode SYMATTR Type diode SYMBOL polcap 832 -1328 R0 WINDOW 3 24 56 Left 2 SYMATTR Value 27.5m SYMATTR InstName C1 SYMATTR SpiceLine V=50 SYMATTR Description Capacitor SYMATTR Type cap SYMBOL res 752 -1072 R0 SYMATTR InstName R5 SYMATTR Value 1000 SYMBOL res 304 -1456 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 5K SYMBOL polcap 960 -1328 R0 WINDOW 3 24 56 Left 2 SYMATTR Value .1 SYMATTR InstName C2 SYMATTR Description Capacitor SYMATTR Type cap SYMATTR SpiceLine V=100 SYMBOL Misc\\battery 976 -1232 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V2 SYMATTR Value 11 SYMBOL Misc\\battery 976 -1120 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V3 SYMATTR Value 11 SYMBOL res 1072 -1344 R0 SYMATTR InstName R3 SYMATTR Value 500 TEXT -408 -696 Left 2 !.tran 0 230m 2m uic TEXT -368 -872 Left 2 ;3.3n