Version 4 SHEET 1 1936 680 WIRE 368 -1440 -480 -1440 WIRE 624 -1440 448 -1440 WIRE 928 -1440 624 -1440 WIRE 112 -1360 -560 -1360 WIRE 336 -1360 112 -1360 WIRE 464 -1360 336 -1360 WIRE 544 -1360 464 -1360 WIRE 592 -1360 544 -1360 WIRE 640 -1360 592 -1360 WIRE 656 -1360 640 -1360 WIRE 688 -1360 656 -1360 WIRE 800 -1360 768 -1360 WIRE 816 -1360 800 -1360 WIRE 928 -1360 928 -1440 WIRE 928 -1360 880 -1360 WIRE 1008 -1360 928 -1360 WIRE 1104 -1360 1008 -1360 WIRE 1136 -1360 1104 -1360 WIRE 1248 -1360 1136 -1360 WIRE 1008 -1328 1008 -1360 WIRE 1136 -1328 1136 -1360 WIRE 1248 -1328 1248 -1360 WIRE 592 -1280 592 -1360 WIRE 464 -1264 464 -1360 WIRE 656 -1232 656 -1360 WIRE 1136 -1232 1136 -1264 WIRE 1248 -1232 1248 -1248 WIRE 1248 -1232 1136 -1232 WIRE 1136 -1216 1136 -1232 WIRE 112 -1184 112 -1360 WIRE 800 -1168 800 -1360 WIRE -560 -1120 -560 -1360 WIRE -480 -1120 -480 -1440 WIRE -256 -1120 -480 -1120 WIRE -48 -1120 -256 -1120 WIRE 1136 -1104 1136 -1136 WIRE 352 -1088 272 -1088 WIRE 560 -1088 432 -1088 WIRE 752 -1088 560 -1088 WIRE -480 -1072 -480 -1120 WIRE 1392 -1072 1232 -1072 WIRE -256 -1056 -256 -1120 WIRE -176 -1056 -192 -1056 WIRE -80 -1056 -96 -1056 WIRE -48 -1056 -80 -1056 WIRE 928 -1056 928 -1360 WIRE 1232 -1024 1232 -1072 WIRE -224 -992 -256 -992 WIRE -48 -992 -144 -992 WIRE 1392 -976 1392 -1072 WIRE 1392 -976 1312 -976 WIRE 400 -960 272 -960 WIRE 432 -960 400 -960 WIRE 528 -960 512 -960 WIRE 800 -960 800 -1072 WIRE 800 -960 528 -960 WIRE 800 -944 800 -960 WIRE -256 -928 -256 -992 WIRE -48 -928 -256 -928 WIRE 1136 -928 1136 -1024 WIRE 1232 -928 1232 -960 WIRE 1232 -928 1216 -928 WIRE 1248 -928 1232 -928 WIRE -256 -896 -256 -928 WIRE 1136 -896 1136 -928 WIRE 336 -864 336 -1360 WIRE 400 -864 400 -960 WIRE -560 -800 -560 -1056 WIRE -480 -800 -480 -992 WIRE -480 -800 -560 -800 WIRE -256 -800 -256 -832 WIRE -256 -800 -480 -800 WIRE 112 -800 112 -864 WIRE 112 -800 -256 -800 WIRE 336 -800 112 -800 WIRE 400 -800 336 -800 WIRE 464 -800 464 -1200 WIRE 464 -800 400 -800 WIRE 592 -800 592 -1216 WIRE 592 -800 464 -800 WIRE 656 -800 656 -1152 WIRE 656 -800 592 -800 WIRE 800 -800 800 -864 WIRE 800 -800 656 -800 WIRE 928 -800 928 -976 WIRE 928 -800 800 -800 WIRE 1008 -800 1008 -1264 WIRE 1008 -800 928 -800 WIRE 1136 -800 1136 -816 WIRE 1136 -800 1008 -800 WIRE 1312 -800 1312 -880 WIRE 1312 -800 1136 -800 WIRE 656 -752 656 -800 WIRE 656 -752 640 -752 WIRE -80 -656 -80 -1056 WIRE 1392 -656 1392 -976 WIRE 1392 -656 -80 -656 FLAG 528 -960 IS FLAG 624 -1440 27.5vout FLAG 560 -1088 gate-drive FLAG 544 -1360 13.6in FLAG 640 -1360 Vin IOPIN 640 -1360 In FLAG 656 -752 0 FLAG 800 -1360 D FLAG 1008 -800 0 FLAG 1104 -1360 27.5vout SYMBOL res -80 -1040 M270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R7 SYMATTR Value 150k SYMBOL cap -256 -1072 M90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C8 SYMATTR Value 10n SYMBOL res -496 -1088 R0 SYMATTR InstName R8 SYMATTR Value 1k SYMBOL res 528 -976 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R9 SYMATTR Value 1K SYMBOL cap 384 -864 R0 SYMATTR InstName C10 SYMATTR Value 220p SYMBOL res -128 -1008 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R10 SYMATTR Value 5.6K SYMBOL cap -272 -896 R0 SYMATTR InstName C11 SYMATTR Value 2.2n SYMBOL polcap -576 -1120 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 cap 320 -864 R0 WINDOW 0 26 15 Left 2 SYMATTR InstName C14 SYMATTR Value .1µ SYMBOL res 448 -1104 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R12 SYMATTR Value 10 SYMBOL polcap 448 -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 576 -1280 R0 SYMATTR InstName C15 SYMATTR Value .1µ SYMBOL voltage 656 -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 672 -1344 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value 22µ SYMATTR SpiceLine Ipk=21 Rser=0.005608 Rpar=1680 Cpar=9.79p SYMBOL res 1120 -912 R0 SYMATTR InstName R1 SYMATTR Value .13 SYMATTR SpiceLine tol=1 pwr=10 SYMBOL schottky 816 -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 992 -1328 R0 WINDOW 3 24 56 Left 2 SYMATTR Value 4700µ SYMATTR InstName C1 SYMATTR SpiceLine V=75 SYMATTR Description Capacitor SYMATTR Type cap SYMBOL res 912 -1072 R0 SYMATTR InstName R5 SYMATTR Value 1000 SYMBOL res 464 -1456 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 10K SYMBOL polcap 1120 -1328 R0 WINDOW 3 24 56 Left 2 SYMATTR Value .01 SYMATTR InstName C2 SYMATTR Description Capacitor SYMATTR Type cap SYMATTR SpiceLine V=100 SYMBOL Misc\\battery 1136 -1232 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V2 SYMATTR Value 11 SYMBOL Misc\\battery 1136 -1120 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V3 SYMATTR Value 11 SYMBOL res 1232 -1344 R0 SYMATTR InstName R3 SYMATTR Value 500 SYMBOL nmos 752 -1168 R0 SYMATTR InstName M2 SYMATTR Value IRF1404Z SYMBOL PowerProducts\\LT1241 112 -1024 R0 SYMATTR InstName U1 SYMBOL res 784 -960 R0 SYMATTR InstName R4 SYMATTR Value .047 SYMATTR SpiceLine tol=1 pwr=10 SYMBOL res 1232 -944 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R6 SYMATTR Value 1k SYMBOL npn 1248 -976 R0 SYMATTR InstName Q1 SYMATTR Value 2N2222 SYMBOL cap 1216 -1024 R0 WINDOW 3 38 -22 Left 2 SYMATTR InstName C3 SYMATTR Value 0.1µ TEXT -408 -696 Left 2 !.tran 0 80m 2m uic TEXT 816 -1288 Left 2 ;bwy29e\n200\npjm0g32c2