Version 4 SHEET 1 9052 3716 WIRE 5744 -1584 5680 -1584 WIRE 5856 -1584 5808 -1584 WIRE 5184 -1488 4704 -1488 WIRE 5344 -1488 5264 -1488 WIRE 5488 -1488 5440 -1488 WIRE 5504 -1488 5488 -1488 WIRE 5600 -1488 5584 -1488 WIRE 5680 -1488 5680 -1584 WIRE 5680 -1488 5600 -1488 WIRE 5712 -1488 5680 -1488 WIRE 5856 -1488 5856 -1584 WIRE 5856 -1488 5808 -1488 WIRE 5984 -1488 5856 -1488 WIRE 6048 -1488 5984 -1488 WIRE 6144 -1488 6048 -1488 WIRE 6272 -1488 6144 -1488 WIRE 6048 -1472 6048 -1488 WIRE 6144 -1472 6144 -1488 WIRE 6272 -1472 6272 -1488 WIRE 6576 -1456 6320 -1456 WIRE 6672 -1456 6656 -1456 WIRE 6336 -1408 6320 -1408 WIRE 5792 -1392 5792 -1440 WIRE 6048 -1376 6048 -1408 WIRE 6144 -1376 6144 -1392 WIRE 6272 -1376 6272 -1392 WIRE 5600 -1344 5600 -1488 WIRE 5648 -1344 5600 -1344 WIRE 5984 -1344 5984 -1488 WIRE 5984 -1344 5936 -1344 WIRE 5488 -1264 5488 -1488 WIRE 5648 -1264 5488 -1264 WIRE 5424 -1184 5424 -1440 WIRE 5648 -1184 5424 -1184 WIRE 5968 -1184 5936 -1184 WIRE 6112 -1184 6048 -1184 WIRE 6112 -1152 6112 -1184 WIRE 5648 -1120 5616 -1120 WIRE 4704 -1072 4704 -1488 WIRE 5792 -1040 5792 -1056 WIRE 6112 -1040 6112 -1072 WIRE 4704 -976 4704 -992 FLAG 5792 -1040 0 FLAG 4704 -976 0 FLAG 6112 -1040 0 FLAG 6336 -1408 0 FLAG 6672 -1456 0 FLAG 6272 -1376 0 FLAG 6144 -1376 0 FLAG 6048 -1376 0 FLAG 5616 -1120 0 SYMBOL res 5488 -1472 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R1 SYMATTR Value 25m SYMBOL cap 6032 -1472 R0 SYMATTR InstName C1 SYMATTR Value 10µ SYMBOL res 6128 -1488 R0 SYMATTR InstName R2 SYMATTR Value 10 SYMBOL pmos 5344 -1440 R270 WINDOW 0 54 43 VTop 2 WINDOW 3 -13 76 VLeft 2 SYMATTR InstName Q1 SYMATTR Value FDS4953 SYMBOL ind 5168 -1472 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 WINDOW 39 -16 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value 1µ SYMATTR SpiceLine Rser=150m SYMBOL voltage 6112 -1168 R0 WINDOW 123 24 138 Left 2 WINDOW 39 24 117 Left 2 SYMATTR Value 5 SYMATTR InstName V1 SYMBOL res 6064 -1200 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R3 SYMATTR Value 1K SYMBOL nmos 5712 -1440 R270 WINDOW 0 74 50 VLeft 2 WINDOW 3 -14 71 VLeft 2 SYMATTR InstName Q2 SYMATTR Value Si4892DY SYMBOL diode 5808 -1600 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName D1 SYMATTR Value Davalanche SYMBOL voltage 4704 -1088 R0 WINDOW 123 24 146 Left 2 WINDOW 39 24 125 Left 2 SYMATTR Value PWL(0u 0 100m 0 +1u 20 150m 20 +10u 0 200m 0 +1u -20 250m -20 +10u 0 400m 0 +1u 5 800m 5 +1u 20 900m 20 +10u 5) SYMATTR InstName V2 SYMBOL sw 6272 -1376 R180 WINDOW 0 -13 114 Right 2 WINDOW 3 -32 7 Right 2 SYMATTR InstName S1 SYMATTR Value SHORT SYMBOL voltage 6560 -1456 M90 WINDOW 123 74 56 VTop 2 WINDOW 39 53 56 VTop 2 WINDOW 3 32 56 VTop 2 WINDOW 0 -32 56 VBottom 2 SYMATTR Value PWL(0us 0V 1200m 0 +5n 1 1201m 1 +5n 0) SYMATTR InstName V3 SYMBOL LTC4361-2 5792 -1216 R0 SYMATTR InstName U1 TEXT 5696 -896 Left 2 !.tran 1500m startup\n.model SHORT SW(Ron=1 Roff=1T Vt=0.5 Vh=-0.4)\n.model Davalanche D(Vfwd=0.7 Vrev=32 Ron=0.1 Rrev=0.1 epsilon=.1 revepsilon=.1) TEXT 5784 -1624 Bottom 2 ;To model avalanche behavior of NFET