Version 4
SHEET 1 884 680
WIRE 720 -208 672 -208
WIRE 816 -208 720 -208
WIRE 816 -160 816 -208
WIRE 672 -128 672 -208
WIRE 720 -128 720 -208
WIRE 0 -112 -96 -112
WIRE 176 -112 0 -112
WIRE 384 -112 176 -112
WIRE -96 -48 -96 -112
WIRE 384 -48 384 -112
WIRE 672 -48 672 -64
WIRE 720 -48 672 -48
WIRE 0 -16 0 -112
WIRE 176 0 176 -32
WIRE 320 0 176 0
WIRE 672 16 672 -48
WIRE 720 16 672 16
WIRE 672 32 672 16
WIRE 176 64 176 0
WIRE 240 64 176 64
WIRE 384 64 384 48
WIRE 384 64 304 64
WIRE 176 112 176 64
WIRE 384 112 384 64
WIRE 432 112 384 112
WIRE 480 112 432 112
WIRE 624 112 560 112
WIRE 0 192 0 64
WIRE 0 192 -96 192
WIRE 16 192 0 192
WIRE 112 192 96 192
WIRE 128 192 112 192
WIRE -96 224 -96 192
FLAG -96 32 0
FLAG -96 304 0
FLAG 176 208 0
FLAG 816 -80 0
FLAG 672 128 0
FLAG 112 192 Uin
FLAG 432 112 Uout
FLAG 720 16 UMosfet
SYMBOL voltage -96 208 R0
WINDOW 123 0 0 Left 2
WINDOW 39 24 124 Left 2
SYMATTR SpiceLine Rser=30
SYMATTR InstName V1
SYMATTR Value PULSE(3.3 0 0 20n 20n 5µ 10µ)
SYMBOL voltage -96 -64 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 10
SYMBOL voltage 816 -176 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value 12
SYMBOL res 112 176 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 100
SYMBOL res 160 -128 R0
SYMATTR InstName R2
SYMATTR Value 2k
SYMBOL nmos 624 32 R0
SYMATTR InstName M1
SYMATTR Value IRFH3702
SYMBOL ind 704 -144 R0
SYMATTR InstName L1
SYMATTR Value 1m
SYMATTR SpiceLine Rser=100m
SYMBOL schottky 688 -64 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D1
SYMATTR Value MBR20100CT
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res 576 96 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 15
SYMBOL nmos 128 112 R0
SYMATTR InstName M2
SYMATTR Value Si1555DL_N
SYMBOL schottky 304 48 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D2
SYMATTR Value 1N5819
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL npn 320 -48 R0
SYMATTR InstName Q1
SYMATTR Value BC847C
SYMBOL res -16 -32 R0
SYMATTR InstName R4
SYMATTR Value 100k
TEXT -128 352 Left 2 !.tran 0 1.002m .988m