Version 4
SHEET 1 956 680
WIRE -512 64 -656 64
WIRE -400 64 -432 64
WIRE -352 64 -400 64
WIRE -112 64 -288 64
WIRE -32 64 -112 64
WIRE 96 64 96 32
WIRE 96 64 48 64
WIRE 176 64 96 64
WIRE -400 80 -400 64
WIRE -656 128 -656 64
WIRE 176 128 176 64
WIRE 96 144 96 64
WIRE -400 176 -400 160
WIRE -112 176 -112 64
WIRE -544 224 -576 224
WIRE -576 240 -576 224
WIRE -656 336 -656 208
WIRE -576 336 -576 320
WIRE -576 336 -656 336
WIRE -400 336 -400 272
WIRE -400 336 -576 336
WIRE -288 336 -400 336
WIRE -112 336 -112 240
WIRE -112 336 -288 336
WIRE 96 336 96 208
WIRE 96 336 -112 336
WIRE 176 336 176 208
WIRE 176 336 96 336
WIRE -288 368 -288 336
FLAG -288 368 0
FLAG 96 32 Vout
FLAG -400 64 C1+
SYMBOL ind -528 80 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 5 56 VBottom 0
SYMATTR InstName L1
SYMATTR Value 22µ
SYMBOL ind -48 80 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 5 56 VBottom 0
SYMATTR InstName L2
SYMATTR Value 22µ
SYMBOL cap -352 80 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName C1
SYMATTR Value 2.2µ
SYMBOL cap 112 208 R180
WINDOW 0 24 64 Left 0
WINDOW 3 24 8 Left 0
SYMATTR InstName C2
SYMATTR Value 22µ
SYMBOL res 160 112 R0
SYMATTR InstName R1
SYMATTR Value 18
SYMBOL voltage -656 112 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL res -416 64 R0
SYMATTR InstName R2
SYMATTR Value 0.4
SYMBOL res -560 240 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R3
SYMATTR Value 100
SYMBOL voltage -576 224 R0
WINDOW 0 39 62 Left 0
WINDOW 3 36 66 Invisible 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value PULSE(0 5 0 1n 1n {ton} {tperiod})
SYMBOL npn -464 176 R0
WINDOW 3 56 68 Invisible 0
SYMATTR Value test
SYMATTR InstName T1
SYMATTR Prefix X
SYMBOL schottky -128 176 R0
SYMATTR InstName D1
SYMATTR Value MBRS340
SYMATTR Description Diode
SYMATTR Type diode
TEXT -648 -48 Left 0 !.param fpwm=1.4e6 p=0.6\n.param tperiod=1/fpwm ton=tperiod*p
TEXT -688 376 Left 0 !.tran 0 1.5m 0 0.1u
TEXT -224 384 Left 0 !.subckt test 1 2 3\nRC 1 4 0.4\n*RB 2 4 1000\n*RE 4 3 10000\nQ1 4 2 3 mynpn\n.model mynpn npn (Bf=1000)\n.ends test