* SPICE netlist
XU1 N014 N007 0 N020 N024 N019 N021 N009 N026 N025 N018 N015 N016 0 N012 N027 0 N013 N022 N023 N010 N008 N001 N005 N017 N011 0 N012 LTC3766 ;pnba SG)FG)Vsec)Mode)Phase)FB)Ith)Run)SS)Ipk)Vsout)Vs+)Vs-)GND)FS/Sync)REGSD)Is-)Is+)SGD)FGD)NDRV)Vin)SW)Vaux)PT-)PT+)PGND)Vcc
C1 N026 0 3.3n
R1 N022 0 16.2K
R2 N023 0 22K
R3 N024 0 100K
R4 N025 0 20.5K
C2 N027 0 .22
C3 N021 0 2.2n Rser=6.2K Cpar=47p
R5 N018 N019 8.62K
R6 N019 0 1.82K
R7 N016 0 100
MQ1 N002 N011 N013 N013 BSC320N20NS3
R8 N013 0 15m
C4 N002 N013 1.5n
L1 IN N002 345 Rser=.1
L2 N001 N004 9.58 Rser=50m
V1 IN 0 48
MQ2 N004 N007 0 0 BSC0901NSI
MQ3 N001 N014 0 0 BSC0901NSI
C5 N004 N001 1n Rser=2.4
R9 N020 0 50K
L3 N003 0 86.25 Rser=.1
D1 N003 N006 BAT54
D2 0 N006 BAT54
L4 N005 N006 1m
C6 N005 0 1
MQ4 IN N010 N012 N012 BSH114
R10 IN N008 16.5K
C7 N008 0 .1
R11 IN N009 210K
C8 N009 0 1n Rpar=7.87K
L5 N001 OUT .85
C9 OUT 0 100 X2 V=6.3 Irms=0 Rser=0.002 Lser=0 mfg="TDK" pn="C575OX5ROJI07M" type="X5R"
C10 OUT 0 220 V=6.3 Irms=3.2 Rser=0.012 Lser=0 mfg="KEMET" pn="T520V227M006ASE012" type="Tantalum"
R12 OUT N015 100
C11 N012 0 1
Rload OUT 0 .165
K1 L1 L2 L3 1
.tran 1.5m startup

* LTspice schematic (.asc)
Version 4
SHEET 1 1760 1248
WIRE 16 -608 -720 -608
WIRE 448 -560 64 -560
WIRE 512 -560 448 -560
WIRE 624 -560 592 -560
WIRE 672 -560 624 -560
WIRE 768 -560 672 -560
WIRE 880 -560 768 -560
WIRE 672 -544 672 -560
WIRE 768 -544 768 -560
WIRE 880 -544 880 -560
WIRE 16 -528 -688 -528
WIRE 16 -512 -320 -512
WIRE -320 -496 -320 -512
WIRE 256 -480 64 -480
WIRE 672 -448 672 -480
WIRE 768 -448 768 -480
WIRE 880 -448 880 -464
WIRE 16 -432 -48 -432
WIRE -48 -416 -48 -432
WIRE 256 -416 256 -480
WIRE 320 -416 256 -416
WIRE 448 -416 448 -560
WIRE 448 -416 384 -416
WIRE -720 -384 -720 -608
WIRE -720 -384 -880 -384
WIRE -224 -384 -720 -384
WIRE -64 -384 -224 -384
WIRE 16 -384 -64 -384
WIRE -880 -368 -880 -384
WIRE 16 -352 16 -384
WIRE 256 -352 256 -416
WIRE -464 -336 -512 -336
WIRE -432 -336 -464 -336
WIRE -320 -336 -320 -432
WIRE -320 -336 -352 -336
WIRE -512 -320 -512 -336
WIRE -320 -320 -320 -336
WIRE -64 -320 -64 -384
WIRE -880 -272 -880 -288
WIRE 208 -272 160 -272
WIRE -512 -240 -512 -256
WIRE -320 -240 -320 -256
WIRE 256 -240 256 -256
WIRE -688 -224 -688 -528
WIRE -688 -224 -752 -224
WIRE -224 -224 -224 -384
WIRE -144 -224 -160 -224
WIRE -64 -224 -64 -240
WIRE -64 -224 -80 -224
WIRE 16 -224 16 -272
WIRE 48 -224 16 -224
WIRE -688 -208 -688 -224
WIRE -752 -192 -752 -224
WIRE -144 -144 -176 -144
WIRE -512 -128 -640 -128
WIRE 448 -128 448 -416
WIRE 448 -128 176 -128
WIRE -304 -112 -320 -112
WIRE -224 -112 -224 -128
WIRE -224 -112 -240 -112
WIRE 448 -96 448 -128
WIRE -752 -80 -752 -128
WIRE -688 -80 -688 -112
WIRE -688 -80 -752 -80
WIRE -384 -80 -688 -80
WIRE -688 -64 -688 -80
WIRE -224 -48 -224 -112
WIRE -224 -48 -480 -48
WIRE 160 -16 160 -272
WIRE 160 -16 96 -16
WIRE 400 -16 256 -16
WIRE -384 0 -384 -80
WIRE -304 0 -304 -16
WIRE -224 0 -224 -48
WIRE -144 0 -144 -144
WIRE -64 0 -64 -224
WIRE 16 0 16 -224
WIRE 96 0 96 -16
WIRE 176 0 176 -128
WIRE 256 0 256 -16
WIRE 448 16 448 0
WIRE -688 32 -688 16
WIRE -464 64 -464 -336
WIRE -448 64 -464 64
WIRE 336 64 320 64
WIRE 624 64 624 -560
WIRE 624 64 416 64
WIRE -512 160 -512 -128
WIRE -448 160 -512 160
WIRE 336 160 320 160
WIRE 432 160 416 160
WIRE -448 256 -464 256
WIRE 336 256 320 256
WIRE 432 256 416 256
WIRE -480 352 -480 -48
WIRE -448 352 -480 352
WIRE 432 352 432 256
WIRE 432 352 320 352
WIRE 448 352 432 352
WIRE 544 352 528 352
WIRE -544 448 -560 448
WIRE -448 448 -464 448
WIRE 432 448 320 448
WIRE 512 448 496 448
WIRE -384 528 -384 512
WIRE -304 528 -304 512
WIRE -144 528 -144 512
WIRE -64 528 -64 512
WIRE 16 528 16 512
WIRE 96 528 96 512
WIRE 176 528 176 512
WIRE -224 544 -224 512
WIRE 256 544 256 512
WIRE -224 624 -224 608
WIRE -64 624 -64 608
WIRE 16 624 16 608
WIRE 96 624 96 608
WIRE 176 624 176 608
WIRE 256 624 256 608
FLAG -384 528 0
FLAG -144 528 0
FLAG -224 624 0
FLAG -304 528 0
FLAG -64 624 0
FLAG 16 624 0
FLAG 96 624 0
FLAG 176 624 0
FLAG 256 624 0
FLAG 512 448 0
FLAG 544 352 0
FLAG 432 160 0
FLAG -688 32 0
FLAG -880 -272 0
FLAG -880 -384 IN
FLAG 256 -240 0
FLAG 448 16 0
FLAG -560 448 0
FLAG -48 -416 0
FLAG -320 -240 0
FLAG -512 -240 0
FLAG -160 -224 0
FLAG 112 -224 0
FLAG 672 -448 0
FLAG 768 -448 0
FLAG -320 -112 0
FLAG 880 -560 OUT
FLAG 880 -448 0
FLAG -304 -16 0
SYMBOL PowerProducts\\LTC3766 -64 256 R0
SYMATTR InstName U1
SYMBOL cap -240 544 R0
SYMATTR InstName C1
SYMATTR Value 3.3n
SYMBOL res -80 512 R0
SYMATTR Value 16.2K
SYMATTR InstName R1
SYMBOL res 0 512 R0
SYMATTR Value 22K
SYMATTR InstName R2
SYMBOL res 80 512 R0
SYMATTR Value 100K
SYMATTR InstName R3
SYMBOL res 160 512 R0
SYMATTR Value 20.5K
SYMATTR InstName R4
SYMBOL cap 240 544 R0
SYMATTR InstName C2
SYMATTR Value .22
SYMBOL cap 432 464 R270
SYMATTR SpiceLine Rser=6.2K Cpar=47p
SYMATTR Value 2.2n
SYMATTR InstName C3
SYMBOL res 320 272 R270
SYMATTR InstName R5
SYMATTR Value 8.62K
SYMBOL res 432 368 R270
SYMATTR InstName R6
SYMATTR Value 1.82K
SYMBOL res 320 176 R270
SYMATTR InstName R7
SYMATTR Value 100
SYMBOL nmos -640 -208 M0
SYMATTR InstName Q1
SYMATTR Value BSC320N20NS3
SYMBOL res -704 -80 R0
SYMATTR InstName R8
SYMATTR Value 15m
SYMBOL cap -768 -192 R0
SYMATTR InstName C4
SYMATTR Value 1.5n
SYMBOL ind2 0 -624 R0
SYMATTR InstName L1
SYMATTR Value 345
SYMATTR Type ind
SYMATTR SpiceLine Rser=.1
SYMBOL ind2 80 -576 M0
SYMATTR InstName L2
SYMATTR Value 9.58
SYMATTR Type ind
SYMATTR SpiceLine Rser=50m
SYMBOL voltage -880 -384 R0
SYMATTR InstName V1
SYMATTR Value 48
SYMBOL nmos 208 -352 R0
SYMATTR InstName Q2
SYMATTR Value BSC0901NSI
SYMBOL nmos 400 -96 R0
SYMATTR InstName Q3
SYMATTR Value BSC0901NSI
SYMBOL cap 320 -400 R270
SYMATTR InstName C5
SYMATTR Value 1n
SYMATTR SpiceLine Rser=2.4
SYMBOL res -448 432 R90
SYMATTR InstName R9
SYMATTR Value 50K
SYMBOL ind2 0 -528 R0
SYMATTR InstName L3
SYMATTR Value 86.25
SYMATTR Type ind
SYMATTR SpiceLine Rser=.1
SYMBOL schottky -336 -496 R0
SYMATTR InstName D1
SYMATTR Value BAT54
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL schottky -336 -256 M180
SYMATTR InstName D2
SYMATTR Value BAT54
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL ind -448 -320 R270
SYMATTR InstName L4
SYMATTR Value 1m
SYMBOL cap -528 -320 R0
SYMATTR InstName C6
SYMATTR Value 1
SYMBOL nmos -176 -224 M0
SYMATTR InstName Q4
SYMATTR Value BSH114
SYMBOL res -80 -336 R0
SYMATTR InstName R10
SYMATTR Value 16.5K
SYMBOL cap -80 -240 R90
SYMATTR InstName C7
SYMATTR Value .1
SYMBOL res 0 -368 R0
SYMATTR InstName R11
SYMATTR Value 210K
SYMBOL cap 48 -240 M90
SYMATTR InstName C8
SYMATTR Value 1n
SYMATTR SpiceLine Rpar=7.87K
SYMBOL ind 496 -544 R270
SYMATTR InstName L5
SYMATTR Value .85
SYMBOL cap 656 -544 R0
SYMATTR Value2 X2
SYMATTR Value 100
SYMATTR InstName C9
SYMATTR SpiceLine V=6.3 Irms=0 Rser=0.002 Lser=0 mfg="TDK" pn="C575OX5ROJI07M" type="X5R"
SYMBOL polcap 752 -544 R0
SYMATTR Value 220
SYMATTR InstName C10
SYMATTR Description Capacitor
SYMATTR Type cap
SYMATTR SpiceLine V=6.3 Irms=3.2 Rser=0.012 Lser=0 mfg="KEMET" pn="T520V227M006ASE012" type="Tantalum"
SYMBOL res 432 48 R90
SYMATTR InstName R12
SYMATTR Value 100
SYMBOL cap -240 -128 R90
SYMATTR InstName C11
SYMATTR Value 1
SYMBOL res 864 -560 R0
SYMATTR InstName Rload
SYMATTR Value .165