* SPICE netlist
MQ1 IN N006 N008 N008 Si4410DY
MQ2 N008 N010 0 0 Si4410DY
L2 N008 OUT2 2.2
D1 IN N001 1N5818
D2 IN N002 1N5818
C1 N021 0 10n
C2 N022 0 10n
C3 N002 N008 1
R1 0 N019 20K
R2 IN N004 10K
C4 OUT2 0 180 Rser=50m
C5 N013 N012 15p
C6 N014 N012 220p
R3 N014 N013 100K
R4 OUT2 N012 10.2K
R5 N012 0 11.5K
R6 N011 N012 10K
C7 OUT2 N011 220p
MQ3 IN N005 N007 N007 Si4410DY
MQ4 N007 N009 0 0 Si4410DY
L1 N007 OUT1 1
C8 N001 N007 1
R7 0 N020 18.7K
C9 OUT1 0 180 m=6 Rser=50m
C10 N016 N018 15p
C11 N015 N018 220p
R8 N015 N016 100K
R9 N017 N018 10K
C12 OUT1 N017 220p
V1 IN 0 5
Rload2 OUT2 0 1
Rload1 OUT1 0 1
R10 IN N003 10
XU1 IN N001 N009 N005 N007 N020 IN N021 N016 0 N018 OUT1 0 0 0 0 0 N003 N012 N013 N022 N004 0 N008 N006 N010 N002 N019 LTC1703 ;pnba PVcc)Boost1)BG1)TB1)SW1)Imax1)FCB)Run/SS1)COMP1)SGND)FB1)Sense)VD0)VD1)VD2)VD3)VD4)Vcc)FB2)COMP2)Run/SS2)FAULT)PGND)SW2)TG2)BG2)Boost2)Imax2
.tran 5m startup

* LTspice schematic (.asc)
Version 4.1
SHEET 1 2256 1200
WIRE -728 -600 -856 -600
WIRE -568 -600 -728 -600
WIRE -200 -600 -568 -600
WIRE -8 -600 -200 -600
WIRE 360 -600 -8 -600
WIRE 584 -600 360 -600
WIRE -856 -568 -856 -600
WIRE -200 -568 -200 -600
WIRE -856 -472 -856 -488
WIRE -392 -456 -632 -456
WIRE -152 -456 -392 -456
WIRE -8 -456 -8 -600
WIRE -8 -456 -88 -456
WIRE 56 -456 -8 -456
WIRE 184 -456 120 -456
WIRE 472 -456 184 -456
WIRE 360 -408 360 -600
WIRE -392 -376 -392 -456
WIRE -200 -376 -200 -488
WIRE -8 -376 -8 -456
WIRE 184 -376 184 -456
WIRE -632 -360 -632 -456
WIRE 472 -360 472 -456
WIRE -728 -296 -728 -600
WIRE -568 -296 -568 -600
WIRE -520 -296 -568 -296
WIRE 360 -296 360 -328
WIRE 360 -296 312 -296
WIRE 584 -296 584 -600
WIRE -520 -216 -680 -216
WIRE 536 -216 312 -216
WIRE -1000 -168 -1112 -168
WIRE -936 -168 -1000 -168
WIRE -888 -168 -936 -168
WIRE -728 -168 -728 -200
WIRE -728 -168 -808 -168
WIRE -632 -168 -632 -296
WIRE -632 -168 -728 -168
WIRE 472 -168 472 -296
WIRE 584 -168 584 -200
WIRE 584 -168 472 -168
WIRE 632 -168 584 -168
WIRE 760 -168 712 -168
WIRE 856 -168 760 -168
WIRE 1000 -168 856 -168
WIRE 1128 -168 1000 -168
WIRE -1112 -152 -1112 -168
WIRE -936 -152 -936 -168
WIRE 760 -152 760 -168
WIRE 1000 -152 1000 -168
WIRE 1128 -152 1128 -168
WIRE -728 -136 -728 -168
WIRE -632 -136 -632 -168
WIRE -520 -136 -632 -136
WIRE 472 -136 472 -168
WIRE 472 -136 312 -136
WIRE 584 -136 584 -168
WIRE 856 -136 856 -168
WIRE -1112 -56 -1112 -72
WIRE -936 -56 -936 -88
WIRE -520 -56 -680 -56
WIRE 536 -56 312 -56
WIRE 760 -56 760 -88
WIRE 856 -56 856 -72
WIRE 1000 -56 1000 -72
WIRE 1000 -56 952 -56
WIRE 1128 -56 1128 -72
WIRE 1000 -40 1000 -56
WIRE -728 -24 -728 -40
WIRE 584 -24 584 -40
WIRE -1000 24 -1000 -168
WIRE -520 24 -1000 24
WIRE 376 24 312 24
WIRE 440 24 376 24
WIRE 536 24 520 24
WIRE 536 40 536 24
WIRE -1000 56 -1000 24
WIRE 1000 56 1000 40
WIRE -728 104 -792 104
WIRE -600 104 -648 104
WIRE -520 104 -600 104
WIRE 376 104 376 88
WIRE 376 104 312 104
WIRE 536 104 376 104
WIRE 856 104 856 24
WIRE 856 104 536 104
WIRE 952 104 952 -56
WIRE 952 104 856 104
WIRE -792 120 -792 104
WIRE -1000 184 -1000 120
WIRE -968 184 -1000 184
WIRE -792 184 -888 184
WIRE -600 184 -600 168
WIRE -600 184 -792 184
WIRE -520 184 -600 184
WIRE 360 184 312 184
WIRE 472 184 440 184
WIRE -632 264 -680 264
WIRE -520 264 -552 264
WIRE 344 264 312 264
WIRE -520 344 -552 344
WIRE 344 344 312 344
WIRE -520 424 -552 424
WIRE 344 424 312 424
WIRE -392 520 -392 504
WIRE -200 520 -200 504
WIRE -8 520 -8 504
WIRE 184 520 184 504
WIRE -392 600 -392 584
WIRE 184 600 184 584
FLAG -392 600 0
FLAG 184 600 0
FLAG -8 520 0
FLAG -200 520 0
FLAG 472 184 0
FLAG 584 -24 0
FLAG 760 -56 0
FLAG 1000 56 0
FLAG -680 264 0
FLAG -728 -24 0
FLAG -936 -56 0
FLAG -856 -472 0
FLAG -552 344 0
FLAG -552 424 0
FLAG 344 264 0
FLAG 344 344 0
FLAG 344 424 0
FLAG 1128 -56 0
FLAG -1112 -56 0
FLAG 1128 -168 OUT2
FLAG -1112 -168 OUT1
FLAG -856 -600 IN
SYMBOL NMOS 536 -296 R0
SYMATTR InstName Q1
SYMATTR Value Si4410DY
SYMBOL nmos 536 -136 R0
SYMATTR InstName Q2
SYMATTR Value Si4410DY
SYMBOL ind 616 -152 R270
SYMATTR InstName L2
SYMATTR Value 2.2
SYMBOL schottky -88 -472 R90
SYMATTR InstName D1
SYMATTR Value 1N5818
SYMBOL schottky 56 -472 M90
SYMATTR InstName D2
SYMATTR Value 1N5818
SYMBOL cap -408 520 R0
SYMATTR InstName C1
SYMATTR Value 10n
SYMBOL cap 168 520 R0
SYMATTR InstName C2
SYMATTR Value 10n
SYMBOL cap 456 -360 R0
SYMATTR InstName C3
SYMATTR Value 1
SYMBOL RES 456 200 M270
SYMATTR InstName R1
SYMATTR Value 20K
SYMBOL res 344 -424 R0
SYMATTR InstName R2
SYMATTR Value 10K
SYMBOL polcap 744 -152 R0
SYMATTR InstName C4
SYMATTR Value 180
SYMATTR SpiceLine Rser=50m
SYMBOL cap 360 24 R0
SYMATTR InstName C5
SYMATTR Value 15p
SYMBOL cap 520 40 R0
SYMATTR InstName C6
SYMATTR Value 220p
SYMBOL res 536 8 R90
SYMATTR InstName R3
SYMATTR Value 100K
SYMBOL res 984 -168 R0
SYMATTR InstName R4
SYMATTR Value 10.2K
SYMBOL res 984 -56 R0
SYMATTR InstName R5
SYMATTR Value 11.5K
SYMBOL res 840 -72 R0
SYMATTR InstName R6
SYMATTR Value 10K
SYMBOL cap 840 -136 R0
SYMATTR InstName C7
SYMATTR Value 220p
SYMBOL NMOS -680 -296 M0
SYMATTR InstName Q3
SYMATTR Value Si4410DY
SYMBOL nmos -680 -136 M0
SYMATTR InstName Q4
SYMATTR Value Si4410DY
SYMBOL ind -792 -152 M270
SYMATTR InstName L1
SYMATTR Value 1
SYMBOL cap -648 -360 R0
SYMATTR InstName C8
SYMATTR Value 1
SYMBOL res -648 248 M90
SYMATTR InstName R7
SYMATTR Value 18.7K
SYMBOL polcap -952 -152 R0
SYMATTR Value2 m=6
SYMATTR InstName C9
SYMATTR Value 180
SYMATTR SpiceLine Rser=50m
SYMBOL cap -616 104 R0
SYMATTR InstName C10
SYMATTR Value 15p
SYMBOL cap -808 120 R0
SYMATTR Value 220p
SYMATTR InstName C11
SYMBOL res -744 88 M90
SYMATTR InstName R8
SYMATTR Value 100K
SYMBOL res -984 168 M90
SYMATTR InstName R9
SYMATTR Value 10K
SYMBOL cap -1016 56 R0
SYMATTR InstName C12
SYMATTR Value 220p
SYMBOL VOLTAGE -856 -584 R0
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL res 1112 -168 R0
SYMATTR InstName Rload2
SYMATTR Value 1
SYMBOL res -1128 -168 R0
SYMATTR InstName Rload1
SYMATTR Value 1
SYMBOL res -216 -584 R0
SYMATTR InstName R10
SYMATTR Value 10
SYMBOL LTC1703 -104 24 R0
SYMATTR InstName U1