* SPICE netlist
XU1 N002 0 N009 N001 N008 0 N010 N013 LTC3900 ;pnba CS+)CS-)CG)Vcc)FG)GND)TIMER)SYNC
R1 N001 N010 500K
C1 N010 0 100p
R2 N013 0 100
C2 N013 N012 100p
V1 N001 0 10
V2 N011 0 PULSE(0 10 0 10n 10n 10u 20u)
MQ1 N004 N008 0 0 Si9936DY
L1 N004 N002 1m Rpar=10K
L2 N003 N001 1m Rpar=10K
MQ2 N005 N009 0 0 Si9936DY
L3 N002 OUT 10 Rpar=1K
C3 OUT 0 100
MQ3 N003 N007 0 0 IRF7201
A1 N006 0 0 0 0 0 N007 0 BUF Vhigh=10
A2 N011 0 0 0 0 N012 0 0 BUF Vhigh=10
D1 N006 N011 D
C4 N006 0 100p
R3 N002 N005 100m
Rload OUT 0 1
.tran 1m
K1 L1 L2 1.

* LTspice schematic (.asc)
Version 4
SHEET 1 1296 656
WIRE -40 -328 -296 -328
WIRE 296 -328 8 -328
WIRE 440 -328 296 -328
WIRE 552 -328 520 -328
WIRE 648 -328 552 -328
WIRE -40 -312 -40 -328
WIRE 8 -312 8 -328
WIRE 552 -312 552 -328
WIRE 648 -312 648 -328
WIRE 296 -232 296 -328
WIRE 456 -232 296 -232
WIRE -40 -216 -40 -232
WIRE -40 -216 -136 -216
WIRE 8 -216 8 -232
WIRE 104 -216 8 -216
WIRE 296 -216 296 -232
WIRE 552 -216 552 -248
WIRE 648 -216 648 -232
WIRE -136 -184 -136 -216
WIRE 104 -184 104 -216
WIRE 296 -120 296 -136
WIRE -632 -104 -648 -104
WIRE -552 -104 -568 -104
WIRE -440 -104 -552 -104
WIRE -184 -104 -376 -104
WIRE 248 -104 152 -104
WIRE -136 -72 -136 -88
WIRE 104 -72 104 -88
WIRE -440 -56 -440 -88
WIRE -296 -40 -296 -328
WIRE -136 -40 -296 -40
WIRE 88 -40 -136 -40
WIRE 376 -40 344 -40
WIRE -136 -24 -136 -40
WIRE -296 -8 -296 -40
WIRE 296 -8 296 -24
WIRE -552 8 -552 -104
WIRE 88 24 88 -40
WIRE 248 56 248 -104
WIRE 248 56 216 56
WIRE -296 88 -296 72
WIRE -136 88 -136 56
WIRE -40 88 -136 88
WIRE -136 104 -136 88
WIRE 456 120 456 -232
WIRE 456 120 216 120
WIRE -136 184 -136 168
WIRE 376 184 376 -40
WIRE 376 184 216 184
WIRE -552 216 -552 72
WIRE -408 216 -552 216
WIRE -216 216 -344 216
WIRE -120 216 -152 216
WIRE -40 216 -120 216
WIRE -552 232 -552 216
WIRE -120 232 -120 216
WIRE 248 248 216 248
WIRE -408 264 -408 232
WIRE 88 312 88 280
WIRE -552 328 -552 312
WIRE -120 328 -120 312
FLAG -296 88 0
FLAG -136 184 0
FLAG 88 312 0
FLAG -120 328 0
FLAG -552 328 0
FLAG 296 -8 0
FLAG 104 -72 0
FLAG 648 -216 0
FLAG 552 -216 0
FLAG -136 -72 0
FLAG -440 -56 0
FLAG -408 264 0
FLAG -648 -104 0
FLAG 648 -328 OUT
FLAG 248 248 0
SYMBOL PowerProducts\\LTC3900 88 136 R0
SYMATTR InstName U1
SYMBOL res -152 -40 R0
SYMATTR InstName R1
SYMATTR Value 500K
SYMBOL cap -152 104 R0
SYMATTR InstName C1
SYMATTR Value 100p
SYMBOL res -136 216 R0
SYMATTR InstName R2
SYMATTR Value 100
SYMBOL cap -152 200 R90
SYMATTR InstName C2
SYMATTR Value 100p
SYMBOL voltage -296 -24 R0
SYMATTR InstName V1
SYMATTR Value 10
SYMBOL voltage -552 216 R0
SYMATTR InstName V2
SYMATTR Value PULSE(0 10 0 10n 10n 10u 20u)
SYMBOL nmos 152 -184 M0
SYMATTR InstName Q1
SYMATTR Value Si9936DY
SYMBOL ind2 24 -216 R180
SYMATTR InstName L1
SYMATTR Value 1m
SYMATTR Type ind
SYMATTR SpiceLine Rpar=10K
SYMBOL ind2 -56 -216 M180
SYMATTR InstName L2
SYMATTR Value 1m
SYMATTR Type ind
SYMATTR SpiceLine Rpar=10K
SYMBOL nmos 344 -120 M0
SYMATTR InstName Q2
SYMATTR Value Si9936DY
SYMBOL ind 424 -312 R270
SYMATTR InstName L3
SYMATTR Value 10
SYMATTR SpiceLine Rpar=1K
SYMBOL cap 536 -312 R0
SYMATTR InstName C3
SYMATTR Value 100
SYMBOL nmos -184 -184 R0
SYMATTR InstName Q3
SYMATTR Value IRF7201
SYMBOL digital\\buf1 -440 -168 R0
SYMATTR Value Vhigh=10
SYMATTR InstName A1
SYMBOL digital\\inv -408 152 R0
SYMATTR Value Vhigh=10
SYMATTR InstName A2
SYMBOL diode -568 8 R0
SYMATTR InstName D1
SYMBOL cap -568 -120 R90
SYMATTR InstName C4
SYMATTR Value 100p
SYMBOL res 280 -232 R0
SYMATTR InstName R3
SYMATTR Value 100m
SYMBOL res 632 -328 R0
SYMATTR InstName Rload
SYMATTR Value 1