* SPICE netlist
XU1 N015 NC_01 NC_02 NC_03 MP_04 NC_05 NC_06 NC_07 N015 N003 N003 N003 N015 NC_08 NC_09 NC_10 NC_11 NC_12 NC_13 N015 N003 N030 NC_14 N025 NC_15 N010 NC_16 NC_17 N031 N021 N028 OUT OUT N013 N021 N031 N030 NC_18 IN N030 N031 N021 N029 OUT OUT N014 N021 N031 NC_19 N026 NC_20 N011 NC_21 NC_22 NC_23 N008 N030 N016 0 LTC7851 ;pnba Comp1)Vsnsp1)Vsnsn1)Vsnsout1))Vsnsout2)Vsnsn2)Vsnsp2)Comp2)FB2)Vcc)FB3)Comp3)Vsnsp3)Vsnsn3)Vsnsout3)Vsnsout4)Vsnsn4)Vsnsp4)Comp4)FB4)SS4)Run4)PWM4)Pgood4)PWM3)Run3)Pgood3)Ilim4)Iavg4)Isns4p)Isns4n)Isns3n)Isns3p)Iavg3)Ilim3)SS3)Pgood2)Vinsns)SS2)Ilim2)Iavg2)Isns2p)Isns2n)Isns1n)Isns1p)Iavg1)Ilim1)Pgood1)PWM2)Run2)PWM1)Run1)Clkout)CLKIN)Freq)SS1)FB1)SGND
R1 0 N008 30.9K
V1 N003 0 5
XU2 MP_24 MP_25 N007 N005 N012 0 N011 N003 N003 N004 LTC4449 ;pnba ))TG)TS)BG)GND)IN)Vlogic)Vcc)Boost
D1 N003 N004 CMDSH2-3
M1 IN N007 N005 N005 Si4408DY
M2 N005 N012 0 0 Si4408DY
C1 N005 N004 .1
L1 N005 OUT .25 Rser=.3m
C2 OUT 0 220 X15
R3 OUT 0 10m
R5 N016 0 15K
C4 N016 N015 2.2n Rser=4.02K Cpar=100p
C5 0 N021 100p
XU3 MP_26 MP_27 N006 N001 N009 0 N010 N003 N003 N002 LTC4449 ;pnba ))TG)TS)BG)GND)IN)Vlogic)Vcc)Boost
D2 N003 N002 CMDSH2-3
M3 IN N006 N001 N001 Si4408DY
M4 N001 N009 0 0 Si4408DY
C6 N001 N002 .1
XU4 MP_28 MP_29 N022 N017 N024 0 N025 N003 N003 N018 LTC4449 ;pnba ))TG)TS)BG)GND)IN)Vlogic)Vcc)Boost
D3 N003 N018 CMDSH2-3
M5 IN N022 N017 N017 Si4408DY
M6 N017 N024 0 0 Si4408DY
C8 N017 N018 .1
XU5 MP_30 MP_31 N023 N020 N027 0 N026 N003 N003 N019 LTC4449 ;pnba ))TG)TS)BG)GND)IN)Vlogic)Vcc)Boost
D4 N003 N019 CMDSH2-3
M7 IN N023 N020 N020 Si4408DY
M8 N020 N027 0 0 Si4408DY
C10 N020 N019 .1
R8 N031 0 42.2K
V2 IN 0 12
R9 OUT N016 10K
C3 OUT N016 3.3n Rser=332
C12 N014 OUT .22
L4 N020 OUT .25 Rser=.3m
C13 N029 OUT .22
L2 N001 OUT .25 Rser=.3m
C14 N013 OUT .22
L3 N017 OUT .25 Rser=.3m
R10 N028 N017 3.57K
C7 N028 OUT .22
R6 N029 N020 3.57K
R11 N014 N005 3.57K
R2 N013 N001 3.57K
.tran .55m startup

* LTspice schematic (.asc)
Version 4
SHEET 1 3008 2320
WIRE -1216 -1160 -1472 -1160
WIRE -1072 -1160 -1216 -1160
WIRE -608 -1160 -1072 -1160
WIRE 976 -1160 -608 -1160
WIRE 1040 -1160 976 -1160
WIRE -1472 -1128 -1472 -1160
WIRE -960 -1112 -1040 -1112
WIRE -848 -1112 -896 -1112
WIRE -800 -1112 -848 -1112
WIRE -688 -1112 -736 -1112
WIRE -80 -1112 -688 -1112
WIRE 64 -1112 -80 -1112
WIRE 592 -1112 64 -1112
WIRE 640 -1112 592 -1112
WIRE 752 -1112 704 -1112
WIRE 800 -1112 752 -1112
WIRE 944 -1112 864 -1112
WIRE 64 -1096 64 -1112
WIRE -1216 -1064 -1216 -1160
WIRE 1040 -1064 1040 -1160
WIRE -848 -1048 -848 -1112
WIRE 752 -1048 752 -1112
WIRE -1472 -1016 -1472 -1048
WIRE -80 -1000 -80 -1112
WIRE -976 -984 -1168 -984
WIRE -688 -984 -688 -1112
WIRE -688 -984 -720 -984
WIRE 592 -984 592 -1112
WIRE 624 -984 592 -984
WIRE 992 -984 880 -984
WIRE -608 -920 -608 -1160
WIRE -560 -920 -608 -920
WIRE 432 -920 400 -920
WIRE 544 -920 512 -920
WIRE -1424 -904 -1504 -904
WIRE -1312 -904 -1344 -904
WIRE -1216 -904 -1216 -968
WIRE -1216 -904 -1312 -904
WIRE -1040 -904 -1040 -1112
WIRE -1040 -904 -1216 -904
WIRE -976 -904 -1040 -904
WIRE -688 -904 -688 -984
WIRE -688 -904 -720 -904
WIRE 592 -904 592 -984
WIRE 624 -904 592 -904
WIRE 944 -904 944 -1112
WIRE 944 -904 880 -904
WIRE 1040 -904 1040 -968
WIRE 1040 -904 944 -904
WIRE 1184 -904 1040 -904
WIRE 1216 -904 1184 -904
WIRE 1360 -904 1296 -904
WIRE 1440 -904 1360 -904
WIRE 1504 -904 1440 -904
WIRE -1216 -872 -1216 -904
WIRE 1040 -872 1040 -904
WIRE 1360 -872 1360 -904
WIRE 1504 -872 1504 -904
WIRE -1312 -856 -1312 -904
WIRE 1184 -856 1184 -904
WIRE -976 -824 -1040 -824
WIRE -560 -824 -720 -824
WIRE 624 -824 400 -824
WIRE 944 -824 880 -824
WIRE 1296 -808 1360 -904
WIRE -1040 -792 -1040 -824
WIRE -1040 -792 -1168 -792
WIRE 944 -792 944 -824
WIRE 992 -792 944 -792
WIRE -1216 -744 -1216 -776
WIRE -848 -744 -848 -760
WIRE 752 -744 752 -760
WIRE 1040 -744 1040 -776
WIRE 1360 -744 1360 -808
WIRE 1504 -744 1504 -792
WIRE -1312 -728 -1312 -776
WIRE -624 -728 -1312 -728
WIRE -560 -728 -624 -728
WIRE 432 -728 400 -728
WIRE 1184 -728 1184 -776
WIRE 1184 -728 432 -728
WIRE -624 -712 -624 -728
WIRE 432 -712 432 -728
WIRE -1504 -632 -1504 -904
WIRE -624 -632 -624 -648
WIRE -624 -632 -1504 -632
WIRE -560 -632 -624 -632
WIRE 432 -632 432 -648
WIRE 432 -632 400 -632
WIRE 1136 -632 432 -632
WIRE 1296 -632 1296 -808
WIRE 1296 -632 1136 -632
WIRE 1136 -552 1136 -632
WIRE 1296 -552 1296 -632
WIRE -560 -536 -640 -536
WIRE 432 -536 400 -536
WIRE 448 -536 432 -536
WIRE 560 -536 512 -536
WIRE -640 -504 -640 -536
WIRE 432 -504 432 -536
WIRE 432 -504 -640 -504
WIRE -688 -440 -688 -904
WIRE -560 -440 -688 -440
WIRE 560 -440 560 -536
WIRE 560 -440 400 -440
WIRE 1136 -440 1136 -488
WIRE 1136 -440 560 -440
WIRE 1296 -440 1296 -472
WIRE 1296 -440 1136 -440
WIRE 1296 -424 1296 -440
WIRE 1296 -328 1296 -344
WIRE -1072 -264 -1072 -1160
WIRE -1072 -264 -1216 -264
WIRE 976 -264 976 -1160
WIRE 1040 -264 976 -264
WIRE -960 -152 -1040 -152
WIRE -848 -152 -896 -152
WIRE -800 -152 -848 -152
WIRE -688 -152 -688 -440
WIRE -688 -152 -736 -152
WIRE 592 -152 592 -904
WIRE 640 -152 592 -152
WIRE 752 -152 704 -152
WIRE 800 -152 752 -152
WIRE 944 -152 864 -152
WIRE -1216 -104 -1216 -264
WIRE 1040 -104 1040 -264
WIRE -848 -88 -848 -152
WIRE 752 -88 752 -152
WIRE -560 -56 -592 -56
WIRE 432 -56 400 -56
WIRE 464 -56 432 -56
WIRE 464 -40 464 -56
WIRE -976 -24 -1168 -24
WIRE -688 -24 -688 -152
WIRE -688 -24 -720 -24
WIRE 592 -24 592 -152
WIRE 624 -24 592 -24
WIRE 992 -24 880 -24
WIRE -592 40 -592 -56
WIRE -560 40 -592 40
WIRE 432 40 432 -56
WIRE 432 40 400 40
WIRE -1504 56 -1504 -632
WIRE -1456 56 -1504 56
WIRE -1328 56 -1376 56
WIRE -1216 56 -1216 -8
WIRE -1216 56 -1328 56
WIRE -1040 56 -1040 -152
WIRE -1040 56 -1216 56
WIRE -976 56 -1040 56
WIRE -688 56 -688 -24
WIRE -688 56 -720 56
WIRE 464 56 464 24
WIRE 592 56 592 -24
WIRE 624 56 592 56
WIRE 944 56 944 -152
WIRE 944 56 880 56
WIRE 1040 56 1040 -8
WIRE 1040 56 944 56
WIRE 1184 56 1040 56
WIRE 1216 56 1184 56
WIRE 1440 56 1440 -904
WIRE 1440 56 1296 56
WIRE -592 72 -592 40
WIRE 432 72 432 40
WIRE 432 72 -592 72
WIRE -1216 88 -1216 56
WIRE 1040 88 1040 56
WIRE 1184 104 1184 56
WIRE -1328 120 -1328 56
WIRE -976 136 -1040 136
WIRE -560 136 -720 136
WIRE 624 136 400 136
WIRE 944 136 880 136
WIRE -1040 168 -1040 136
WIRE -1040 168 -1168 168
WIRE 944 168 944 136
WIRE 992 168 944 168
WIRE -1216 216 -1216 184
WIRE -848 216 -848 200
WIRE 752 216 752 200
WIRE 1040 216 1040 184
WIRE -1328 232 -1328 200
WIRE -624 232 -1328 232
WIRE -560 232 -624 232
WIRE 432 232 400 232
WIRE 1184 232 1184 184
WIRE 1184 232 432 232
WIRE -624 248 -624 232
WIRE 432 248 432 232
WIRE -1504 328 -1504 56
WIRE -624 328 -624 312
WIRE -624 328 -1504 328
WIRE -560 328 -624 328
WIRE 432 328 432 312
WIRE 432 328 400 328
WIRE 1440 328 1440 56
WIRE 1440 328 432 328
WIRE -640 424 -640 -504
WIRE -560 424 -640 424
WIRE 432 424 400 424
WIRE -640 456 -640 424
WIRE 432 456 432 424
WIRE 432 456 -640 456
WIRE -688 520 -688 56
WIRE -560 520 -688 520
WIRE 592 520 592 56
WIRE 592 520 400 520
WIRE -80 984 -80 968
WIRE -464 1000 -464 968
WIRE -368 1000 -368 968
WIRE -368 1000 -464 1000
WIRE 208 1000 208 968
WIRE 208 1000 -368 1000
WIRE 304 1000 304 968
WIRE 304 1000 208 1000
WIRE -272 1016 -272 968
WIRE -176 1016 -176 968
WIRE -176 1016 -272 1016
WIRE 16 1016 16 968
WIRE 16 1016 -176 1016
WIRE 112 1016 112 968
WIRE 112 1016 16 1016
WIRE 112 1032 112 1016
WIRE 112 1128 112 1112
WIRE -1504 1160 -1504 328
WIRE 1440 1160 1440 328
WIRE 1440 1160 -1504 1160
FLAG 544 -920 0
FLAG 64 -1016 0
FLAG 752 -744 0
FLAG 1040 -744 0
FLAG 1360 -744 0
FLAG 1504 -744 0
FLAG 1296 -328 0
FLAG 464 56 0
FLAG -848 -744 0
FLAG -1216 -744 0
FLAG -848 216 0
FLAG -1216 216 0
FLAG 752 216 0
FLAG 1040 216 0
FLAG 112 1128 0
FLAG -80 984 0
FLAG -1472 -1016 0
FLAG -1472 -1160 IN
FLAG 1360 -904 OUT
SYMBOL PowerProducts\\LTC7851 -80 -8 R0
SYMATTR InstName U1
SYMBOL res 528 -936 R90
SYMATTR InstName R1
SYMATTR Value 30.9K
SYMBOL voltage 64 -1112 R0
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL PowerProducts\\LTC4449 752 -904 R0
SYMATTR InstName U2
SYMBOL schottky 640 -1096 R270
SYMATTR Value CMDSH2-3
SYMATTR InstName D1
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL nmos 992 -1064 R0
SYMATTR InstName M1
SYMATTR Value Si4408DY
SYMBOL nmos 992 -872 R0
SYMATTR InstName M2
SYMATTR Value Si4408DY
SYMBOL cap 864 -1128 R90
SYMATTR InstName C1
SYMATTR Value .1
SYMBOL ind 1200 -888 R270
SYMATTR InstName L1
SYMATTR Value .25
SYMATTR Value2 Rser=.3m
SYMBOL cap 1344 -872 R0
SYMATTR Value2 X15
SYMATTR InstName C2
SYMATTR Value 220
SYMBOL res 1488 -888 R0
SYMATTR InstName R3
SYMATTR Value 10m
SYMBOL res 1280 -440 R0
SYMATTR InstName R5
SYMATTR Value 15K
SYMBOL cap 512 -552 R90
SYMATTR InstName C4
SYMATTR Value 2.2n
SYMATTR Value2 Rser=4.02K
SYMATTR SpiceLine Cpar=100p
SYMBOL cap 448 24 M180
SYMATTR InstName C5
SYMATTR Value 100p
SYMBOL PowerProducts\\LTC4449 -848 -904 M0
SYMATTR InstName U3
SYMBOL schottky -736 -1096 M270
SYMATTR Value CMDSH2-3
SYMATTR InstName D2
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL nmos -1168 -1064 M0
SYMATTR InstName M3
SYMATTR Value Si4408DY
SYMBOL nmos -1168 -872 M0
SYMATTR InstName M4
SYMATTR Value Si4408DY
SYMBOL cap -960 -1128 M90
SYMATTR InstName C6
SYMATTR Value .1
SYMBOL PowerProducts\\LTC4449 -848 56 M0
SYMATTR InstName U4
SYMBOL schottky -736 -136 M270
SYMATTR Value CMDSH2-3
SYMATTR InstName D3
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL nmos -1168 -104 M0
SYMATTR InstName M5
SYMATTR Value Si4408DY
SYMBOL nmos -1168 88 M0
SYMATTR InstName M6
SYMATTR Value Si4408DY
SYMBOL cap -960 -168 M90
SYMATTR InstName C8
SYMATTR Value .1
SYMBOL PowerProducts\\LTC4449 752 56 R0
SYMATTR InstName U5
SYMBOL schottky 640 -136 R270
SYMATTR Value CMDSH2-3
SYMATTR InstName D4
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL nmos 992 -104 R0
SYMATTR InstName M7
SYMATTR Value Si4408DY
SYMBOL nmos 992 88 R0
SYMATTR InstName M8
SYMATTR Value Si4408DY
SYMBOL cap 864 -168 R90
SYMATTR InstName C10
SYMATTR Value .1
SYMBOL res 96 1016 R0
SYMATTR InstName R8
SYMATTR Value 42.2K
SYMBOL voltage -1472 -1144 R0
SYMATTR InstName V2
SYMATTR Value 12
SYMBOL res 1280 -568 R0
SYMATTR InstName R9
SYMATTR Value 10K
SYMBOL cap 1120 -552 R0
SYMATTR Value2 Rser=332
SYMATTR Value 3.3n
SYMATTR InstName C3
SYMBOL cap 416 -712 R0
SYMATTR InstName C12
SYMATTR Value .22
SYMBOL ind 1200 72 R270
SYMATTR InstName L4
SYMATTR Value .25
SYMATTR Value2 Rser=.3m
SYMBOL cap 416 248 R0
SYMATTR InstName C13
SYMATTR Value .22
SYMBOL ind -1328 -888 M270
SYMATTR InstName L2
SYMATTR Value .25
SYMATTR Value2 Rser=.3m
SYMBOL cap -640 -712 R0
SYMATTR InstName C14
SYMATTR Value .22
SYMBOL ind -1360 72 M270
SYMATTR InstName L3
SYMATTR Value .25
SYMATTR Value2 Rser=.3m
SYMBOL res -1344 216 M180
SYMATTR InstName R10
SYMATTR Value 3.57K
SYMBOL cap -640 248 R0
SYMATTR InstName C7
SYMATTR Value .22
SYMBOL res 1168 200 M180
SYMATTR InstName R6
SYMATTR Value 3.57K
SYMBOL res 1168 -760 M180
SYMATTR InstName R11
SYMATTR Value 3.57K
SYMBOL res -1328 -760 M180
SYMATTR InstName R2
SYMATTR Value 3.57K