Version 4
SHEET 1 880 680
WIRE 336 -32 240 -32
WIRE 176 32 176 -32
WIRE 336 32 336 -32
WIRE 176 48 176 32
WIRE 128 128 96 128
FLAG 176 224 0
FLAG 256 96 0
FLAG 96 208 0
FLAG 336 112 0
SYMBOL nmos 128 48 R0
WINDOW 0 -41 22 Left 2
WINDOW 3 -97 -7 Left 2
SYMATTR InstName M1
SYMATTR Value Si7336ADP
SYMBOL res 160 128 R0
SYMATTR InstName R1
SYMATTR Value .005
SYMBOL ind 160 48 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 40µH
SYMBOL cap 272 96 R180
WINDOW 0 -17 14 Left 2
WINDOW 3 -33 -28 Left 2
SYMATTR InstName C1
SYMATTR Value 14µF
SYMBOL schottky 176 -16 R270
WINDOW 0 5 -26 VTop 2
WINDOW 3 47 143 VBottom 2
SYMATTR InstName D1
SYMATTR Value MBRB2545CT
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res 352 16 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 1
SYMBOL voltage 336 16 R0
WINDOW 0 24 96 Left 2
WINDOW 3 24 16 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 14
SYMBOL voltage 96 112 R0
WINDOW 3 -73 139 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
WINDOW 0 -71 35 Left 2
SYMATTR Value PULSE(0 15 10us 50ns 50ns 25us 50us)
SYMATTR InstName V2
TEXT 304 200 Left 2 !.tran .5ms