* SPICE netlist
V1 IN 0 12
C1 0 N001 4.7
XU2 MP_01 MP_02 N007 N005 N011 0 N010 N001 N001 N004 LTC4449 ;pnba ))TG)TS)BG)GND)IN)Vlogic)Vcc)Boost
M1 IN N007 N005 N005 AONS36303
M2 N005 N011 0 0 AONS32306
L1 N005 OUT 0.33 Rser=.32m Rpar=5K
R3 N005 N013 931
C2 N013 OUT 0.22
XU3 MP_03 MP_04 N006 N002 N008 0 N009 N001 N001 N003 LTC4449 ;pnba ))TG)TS)BG)GND)IN)Vlogic)Vcc)Boost
M3 IN N006 N002 N002 AONS36303
M4 N002 N008 0 0 AONS32306
L2 N002 OUT 0.33 Rser=.32m Rpar=5K
R4 N002 N012 931
C3 N012 OUT 0.22
C4 OUT 0 330 Rser=10m
Rload OUT 0 25m
D1 N001 N003 1N5818
C7 N003 N002 0.22
D2 N001 N004 1N5818
C8 N004 N005 0.22
C9 N017 0 2200p Rser=15K
R1 N005 N015 4.64K
C5 OUT N015 0.22
R2 N018 0 37.5K
R5 N002 N014 4.64K
C6 OUT N014 0.22
R6 OUT N016 15K
R7 N016 0 10K
C10 OUT 0 330 Rser=10m
R8 N001 N019 3.01K
R9 N019 0 1K
R10 N001 N020 3.01K
R11 N020 0 1K
XU1 NC_05 N017 0 N016 NC_06 IN NC_07 N010 NC_08 0 N015 OUT N013 NC_09 NC_10 N012 OUT N014 MP_11 NC_12 N009 NC_13 IN NC_14 N016 0 N017 NC_15 N019 NC_16 N018 NC_17 NC_18 N001 IN N020 LTC3774 ;pnba Itemp2)Ith2)Vosns2-)Vosns2+)TK/SS2)HiZB2)PWMEN2)PWM2)Run2)GND)SNSD2+)SNS2-)SNSA2+)PGood2)PGood1)SNSA1+)SNS1-)SNSD1+))Run1)PWM1)PWMEN1)HiZB1)TK/SS1)Vosns1+)Vosns1-)Ith1)Itemp1)Ilim1)PhaseMD)Freq)Mode/PLLIN)Clkout)IntVcc)Vin)Ilim2
.tran 0.8m startup

* LTspice schematic (.asc)
Version 4.1
SHEET 1 2560 1520
WIRE -928 -760 -960 -760
WIRE -720 -760 -928 -760
WIRE -272 -760 -720 -760
WIRE 96 -760 -272 -760
WIRE 464 -760 96 -760
WIRE 928 -760 464 -760
WIRE -960 -744 -960 -760
WIRE -960 -648 -960 -664
WIRE 192 -648 192 -664
WIRE 192 -648 -336 -648
WIRE 528 -648 192 -648
WIRE 96 -632 96 -760
WIRE 192 -632 192 -648
WIRE -624 -552 -912 -552
WIRE -512 -552 -560 -552
WIRE -448 -552 -512 -552
WIRE -336 -552 -336 -648
WIRE -336 -552 -384 -552
WIRE 528 -552 528 -648
WIRE 592 -552 528 -552
WIRE 720 -552 656 -552
WIRE 768 -552 720 -552
WIRE 1088 -552 832 -552
WIRE -720 -520 -720 -760
WIRE 928 -520 928 -760
WIRE -512 -504 -512 -552
WIRE 720 -504 720 -552
WIRE -272 -472 -272 -760
WIRE -224 -472 -272 -472
WIRE 464 -472 464 -760
WIRE 464 -472 432 -472
WIRE -640 -440 -672 -440
WIRE -336 -440 -336 -552
WIRE -336 -440 -384 -440
WIRE 528 -440 528 -552
WIRE 592 -440 528 -440
WIRE 880 -440 848 -440
WIRE -1216 -360 -1264 -360
WIRE -1152 -360 -1216 -360
WIRE -1056 -360 -1152 -360
WIRE -1024 -360 -1056 -360
WIRE -912 -360 -912 -552
WIRE -912 -360 -944 -360
WIRE -720 -360 -720 -424
WIRE -720 -360 -912 -360
WIRE -640 -360 -720 -360
WIRE -336 -360 -336 -440
WIRE -336 -360 -384 -360
WIRE 528 -360 528 -440
WIRE 592 -360 528 -360
WIRE 928 -360 928 -424
WIRE 928 -360 848 -360
WIRE 1088 -360 1088 -552
WIRE 1088 -360 928 -360
WIRE 1120 -360 1088 -360
WIRE 1232 -360 1200 -360
WIRE 1280 -360 1232 -360
WIRE -1264 -344 -1264 -360
WIRE -1152 -328 -1152 -360
WIRE 1280 -328 1280 -360
WIRE -640 -280 -672 -280
WIRE -224 -280 -384 -280
WIRE 592 -280 432 -280
WIRE 880 -280 848 -280
WIRE -1264 -248 -1264 -264
WIRE -1152 -248 -1152 -264
WIRE -720 -232 -720 -264
WIRE 928 -232 928 -264
WIRE 1280 -232 1280 -264
WIRE -512 -200 -512 -216
WIRE 720 -200 720 -216
WIRE -912 -184 -912 -360
WIRE -832 -184 -912 -184
WIRE -416 -184 -752 -184
WIRE -224 -184 -416 -184
WIRE 608 -184 432 -184
WIRE 960 -184 608 -184
WIRE 1088 -184 1088 -360
WIRE 1088 -184 1040 -184
WIRE -416 -168 -416 -184
WIRE 608 -168 608 -184
WIRE -1056 -88 -1056 -360
WIRE -1056 -88 -1104 -88
WIRE -416 -88 -416 -104
WIRE -416 -88 -1056 -88
WIRE -224 -88 -416 -88
WIRE 608 -88 608 -104
WIRE 608 -88 432 -88
WIRE 1232 -88 1232 -360
WIRE 1232 -88 608 -88
WIRE -416 -72 -416 -88
WIRE 608 -72 608 -88
WIRE -1056 -8 -1056 -88
WIRE -912 8 -912 -184
WIRE -832 8 -912 8
WIRE -416 8 -416 -8
WIRE -416 8 -752 8
WIRE -224 8 -416 8
WIRE 608 8 608 -8
WIRE 608 8 432 8
WIRE 960 8 608 8
WIRE 1088 8 1088 -184
WIRE 1088 8 1040 8
WIRE -336 56 -336 -360
WIRE -336 56 -448 56
WIRE -1056 104 -1056 72
WIRE -288 104 -1056 104
WIRE -224 104 -288 104
WIRE 496 104 432 104
WIRE -1056 120 -1056 104
WIRE -224 200 -240 200
WIRE 448 200 432 200
WIRE -1056 232 -1056 200
WIRE -400 296 -416 296
WIRE -256 296 -336 296
WIRE -224 296 -256 296
WIRE 464 296 432 296
WIRE -448 472 -448 56
WIRE 528 472 528 -360
WIRE 16 568 16 552
WIRE 112 568 112 552
WIRE -448 584 -448 552
WIRE -80 584 -80 552
WIRE -80 584 -448 584
WIRE 304 584 304 552
WIRE 528 584 528 552
WIRE 528 584 304 584
WIRE -448 616 -448 584
WIRE 528 616 528 584
WIRE 16 664 16 648
WIRE -256 696 -256 296
WIRE 464 696 464 296
WIRE 464 696 -256 696
WIRE -448 712 -448 696
WIRE 528 712 528 696
WIRE -288 728 -288 104
WIRE 496 728 496 104
WIRE 496 728 -288 728
WIRE -1104 760 -1104 -88
WIRE 1232 760 1232 -88
WIRE 1232 760 -1104 760
FLAG -960 -648 0
FLAG 720 -200 0
FLAG 928 -232 0
FLAG -512 -200 0
FLAG -720 -232 0
FLAG 1280 -232 0
FLAG -1264 -248 0
FLAG -1216 -360 OUT
FLAG -928 -760 IN
FLAG 112 568 0
FLAG -416 296 0
FLAG 192 -728 0
FLAG 16 664 0
FLAG 448 200 0
FLAG -1056 232 0
FLAG -240 200 0
FLAG -1152 -248 0
FLAG -448 712 0
FLAG 528 712 0
SYMBOL voltage -960 -760 R0
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL cap 176 -728 R0
SYMATTR InstName C1
SYMATTR Value 4.7
SYMBOL PowerProducts\\LTC4449 720 -360 R0
SYMATTR InstName U2
SYMBOL nmos 880 -520 R0
SYMATTR InstName M1
SYMATTR Value AONS36303
SYMBOL nmos 880 -360 R0
SYMATTR InstName M2
SYMATTR Value AONS32306
SYMBOL ind 1104 -344 R270
SYMATTR InstName L1
SYMATTR Value 0.33
SYMATTR SpiceLine Rser=.32m Rpar=5K
SYMBOL res 1056 -200 R90
SYMATTR InstName R3
SYMATTR Value 931
SYMBOL cap 592 -168 R0
SYMATTR InstName C2
SYMATTR Value 0.22
SYMBOL PowerProducts\\LTC4449 -512 -360 M0
SYMATTR InstName U3
SYMBOL nmos -672 -520 M0
SYMATTR InstName M3
SYMATTR Value AONS36303
SYMBOL nmos -672 -360 M0
SYMATTR InstName M4
SYMATTR Value AONS32306
SYMBOL ind -928 -344 M270
SYMATTR InstName L2
SYMATTR Value 0.33
SYMATTR SpiceLine Rser=.32m Rpar=5K
SYMBOL res -848 -200 M90
SYMATTR InstName R4
SYMATTR Value 931
SYMBOL cap -400 -168 M0
SYMATTR InstName C3
SYMATTR Value 0.22
SYMBOL cap 1264 -328 R0
SYMATTR InstName C4
SYMATTR Value 330
SYMATTR SpiceLine Rser=10m
SYMBOL res -1280 -360 R0
SYMATTR InstName Rload
SYMATTR Value 25m
SYMBOL schottky -384 -568 R90
SYMATTR InstName D1
SYMATTR Value 1N5818
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL cap -560 -568 R90
SYMATTR InstName C7
SYMATTR Value 0.22
SYMBOL schottky 592 -568 M90
SYMATTR InstName D2
SYMATTR Value 1N5818
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL cap 768 -568 M90
SYMATTR InstName C8
SYMATTR Value 0.22
SYMBOL cap -336 312 M270
SYMATTR InstName C9
SYMATTR Value 2200p
SYMATTR SpiceLine Rser=15K
SYMBOL res 1056 -8 R90
SYMATTR InstName R1
SYMATTR Value 4.64K
SYMBOL cap 592 -72 R0
SYMATTR InstName C5
SYMATTR Value 0.22
SYMBOL res 0 552 R0
SYMATTR InstName R2
SYMATTR Value 37.5K
SYMBOL res -848 -8 M90
SYMATTR InstName R5
SYMATTR Value 4.64K
SYMBOL cap -400 -72 M0
SYMATTR InstName C6
SYMATTR Value 0.22
SYMBOL res -1072 -24 R0
SYMATTR InstName R6
SYMATTR Value 15K
SYMBOL res -1072 104 R0
SYMATTR InstName R7
SYMATTR Value 10K
SYMBOL cap -1168 -328 R0
SYMATTR InstName C10
SYMATTR Value 330
SYMATTR SpiceLine Rser=10m
SYMBOL res -464 456 R0
SYMATTR InstName R8
SYMATTR Value 3.01K
SYMBOL res -464 600 R0
SYMATTR InstName R9
SYMATTR Value 1K
SYMBOL res 512 456 R0
SYMATTR InstName R10
SYMATTR Value 3.01K
SYMBOL res 512 600 R0
SYMATTR InstName R11
SYMATTR Value 1K
SYMBOL LTC3774 112 -40 R0
SYMATTR InstName U1