Version 4 SHEET 1 880 680 WIRE -144 -16 -240 -16 WIRE 160 -16 -144 -16 WIRE 256 -16 160 -16 WIRE 304 -16 256 -16 WIRE 400 -16 304 -16 WIRE 592 -16 544 -16 WIRE 672 -16 656 -16 WIRE 768 -16 672 -16 WIRE 256 0 256 -16 WIRE -144 48 -144 -16 WIRE 400 48 400 -16 WIRE 544 48 544 -16 WIRE 672 48 672 -16 WIRE 768 64 768 -16 WIRE 160 80 160 -16 WIRE 256 96 256 64 WIRE 304 96 304 64 WIRE 304 96 256 96 WIRE -240 144 -240 -16 WIRE 400 160 400 128 WIRE 400 160 304 160 WIRE -144 176 -144 128 WIRE 400 192 400 160 WIRE 160 208 160 160 WIRE 160 208 -32 208 WIRE 544 224 544 128 WIRE 672 224 672 112 WIRE 672 224 544 224 WIRE 768 224 768 144 WIRE 768 224 672 224 WIRE 160 272 160 208 WIRE 160 272 144 272 WIRE 352 272 160 272 WIRE 672 272 672 224 WIRE 80 320 80 272 WIRE -32 416 -32 208 WIRE 80 416 80 400 WIRE -240 512 -240 208 WIRE -144 512 -144 256 WIRE -144 512 -240 512 WIRE -32 512 -32 480 WIRE -32 512 -144 512 WIRE 80 512 80 496 WIRE 80 512 -32 512 WIRE 400 512 400 288 WIRE 400 512 80 512 WIRE 400 528 400 512 FLAG 672 272 0 FLAG 400 528 0 SYMBOL ind2 384 144 M180 WINDOW 0 36 80 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName L1 SYMATTR Value 1m SYMATTR SpiceLine Rser=1 SYMBOL nmos 352 192 R0 WINDOW 3 78 52 VRight 2 SYMATTR InstName M1 SYMATTR Value BSZ019N03LS SYMBOL cap -256 144 R0 SYMATTR InstName C1 SYMATTR Value 100µ SYMBOL cap 144 256 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C2 SYMATTR Value 50n SYMBOL ind2 96 512 R180 WINDOW 0 36 80 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName L2 SYMATTR Value 1mµ SYMATTR Type ind SYMATTR SpiceLine Rser=1m SYMBOL res 144 64 R0 SYMATTR InstName R1 SYMATTR Value 100k SYMBOL voltage -144 160 R0 WINDOW 123 0 0 Left 2 WINDOW 39 24 124 Left 2 SYMATTR InstName V1 SYMATTR Value 15 SYMATTR SpiceLine Rser=0.1 SYMBOL ind -160 32 R0 SYMATTR InstName L3 SYMATTR Value 20n SYMBOL ind2 560 32 M0 SYMATTR InstName L4 SYMATTR Value 1m SYMATTR SpiceLine Rser=1 SYMBOL schottky 592 0 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D1 SYMATTR Value MBRS360 SYMATTR Description Diode SYMATTR Type diode SYMBOL cap 656 48 R0 SYMATTR InstName C3 SYMATTR Value 10µ SYMBOL zener -16 480 R180 WINDOW 0 24 64 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D2 SYMATTR Value BZX84C6V2L SYMATTR Description Diode SYMATTR Type diode SYMBOL schottky 320 160 R180 WINDOW 0 24 64 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D3 SYMATTR Value MBRS360 SYMATTR Description Diode SYMATTR Type diode SYMBOL res 288 -32 R0 SYMATTR InstName R2 SYMATTR Value 270 SYMBOL res 64 304 R0 SYMATTR InstName R3 SYMATTR Value 50 SYMBOL cap 240 0 R0 SYMATTR InstName C4 SYMATTR Value 10µ SYMBOL res 752 48 R0 SYMATTR InstName R4 SYMATTR Value 5k TEXT 80 -48 Left 2 !K1 L1 L2 L4 0.99 TEXT -146 532 Left 2 !.tran 20m startup