* SPICE netlist
VIN1 IN 0 12
C3 0 VCC 1
C5 N010 0 100p
C9 N013 0 6800p
C18 N009 0 100p
C19 N012 0 6800p
C20 N018 0 1
C21 N016 0 1
L1 SW1 OUT1 0.215 Rser=0.35m
C22 OUT1 0 470 x2 Rser=5m
R12 N007 VCC 1
C23 VCC 0 1
C24 N007 0 10
XU3 VCC PWM1 N011 0 SW2 ISNS2 PWM2 N014 N007 IN SW1 0 ISNS1 N008 N008 LTC7050 RTon=5m RBon=1.2m OV=14.8 ;pnba VCC)PWM1)RUN1)SGND)SW2)ISNS2)PWM2)RUN2)PVCC)VIN)SW1)PGND)ISNS1)FLTB1)FLTB2
R17 VCC N008 10K
C25 OUT1 0 47 x2 Rser=5m
C26 N004 N006 3.3n
R19 N004 N006 150
R20 SW1 N002 43.2K
C27 N002 N004 47p
V3 N006 0 1.5
R21 ISNS1 N004 1m
R22 N015 N018 10K
L2 SW2 OUT2 0.215 Rser=0.35m
C28 OUT2 0 470 x2 Rser=5m
R23 OUT2 0 0.035
C29 OUT2 0 47 x2 Rser=5m
R24 N011 VCC 10K
R25 N014 VCC 10K
R26 N001 SW2 43.2K
C30 N001 N003 47p
V4 N005 0 1.5
R27 ISNS2 N003 1m
C31 N003 N005 3.3n
R28 N003 N005 150
R29 OUT1 0 0.035
R30 N017 N018 10K
XU1 OUT1 0 N003 N005 N013 N010 N004 N006 NC_01 PWM2 NC_02 PWM1 0 OUT2 0 0 N017 N015 IN VCC NC_03 NC_04 NC_05 NC_06 N016 0 NC_07 N018 N009 N012 LTC3884-1 VIN_ON=5.5 VIN_OFF=5 Vout_0=1 Vout_1=1 Ilim0_range=1 Ilim1_range=1 OC_limit0=1 OC_limit1=1 Mode_ll=1 Fault_response=2 Retry_delay=.1m gm0=3m gm1=3m Rth0=5K Rth1=5K LowDcr=0 Freq=500K PHs_0=0 PHs_1=180 Ton0_delay=.3m Ton0_rise=.5m Ton1_delay=.3m Ton1_rise=.5m Toff0_delay=1m Toff0_fall=2m Toff1_delay=.5m Toff1_fall=1m Vout0_range=1 Vout1_range=1 Sync=0 ;pnba Vsense0+)Vsense0-)Isense1+)Isense1-)IthR0)Ith0)Isense0+)Isense0-)PGood0)PWM1)SYNC)PWM0)Vsense1-)Vsense1+)SGND)ExtVcc)Run0)Run1)Vin)IntVcc)Vout_cfg0)Vout_cfg1)Freq_cfg)Phase_cfg)VDD25)PGND)PGood1)VDD33)Ith1)IthR1
.tran 1.5m startup

* LTspice schematic (.asc)
Version 4
SHEET 1 3056 1280
WIRE -1016 -640 -1176 -640
WIRE 392 -640 -1016 -640
WIRE -1176 -624 -1176 -640
WIRE -920 -576 -920 -592
WIRE -824 -544 -856 -544
WIRE -1176 -528 -1176 -544
WIRE -920 -496 -920 -512
WIRE -856 -496 -856 -544
WIRE -856 -496 -920 -496
WIRE -1016 -480 -1016 -640
WIRE -920 -480 -920 -496
WIRE -824 -480 -824 -496
WIRE -728 -480 -728 -496
WIRE -632 -480 -632 -496
WIRE -1480 -432 -1528 -432
WIRE -1336 -432 -1400 -432
WIRE -280 -432 -344 -432
WIRE -136 -432 -200 -432
WIRE -1336 -416 -1336 -432
WIRE -1080 -416 -1112 -416
WIRE -504 -416 -568 -416
WIRE -344 -416 -344 -432
WIRE 968 -384 936 -384
WIRE -1480 -320 -1528 -320
WIRE -1336 -320 -1336 -352
WIRE -1336 -320 -1400 -320
WIRE -1288 -320 -1336 -320
WIRE -1176 -320 -1288 -320
WIRE -1080 -320 -1176 -320
WIRE -472 -320 -568 -320
WIRE -376 -320 -472 -320
WIRE -344 -320 -344 -352
WIRE -344 -320 -376 -320
WIRE -280 -320 -344 -320
WIRE -152 -320 -200 -320
WIRE 392 -320 392 -640
WIRE 472 -320 392 -320
WIRE 936 -320 936 -384
WIRE 936 -320 760 -320
WIRE 1064 -320 936 -320
WIRE 1240 -320 1144 -320
WIRE 1384 -320 1240 -320
WIRE 1496 -320 1384 -320
WIRE 1528 -320 1496 -320
WIRE -1288 -304 -1288 -320
WIRE -1176 -304 -1176 -320
WIRE -472 -304 -472 -320
WIRE -376 -304 -376 -320
WIRE 1240 -304 1240 -320
WIRE 1384 -304 1384 -320
WIRE 1496 -304 1496 -320
WIRE -1080 -224 -1144 -224
WIRE -520 -224 -568 -224
WIRE 56 -224 24 -224
WIRE 120 -224 56 -224
WIRE 264 -224 200 -224
WIRE 472 -224 264 -224
WIRE 856 -224 760 -224
WIRE -1288 -208 -1288 -224
WIRE -1288 -208 -1400 -208
WIRE -1176 -208 -1176 -240
WIRE -1176 -208 -1288 -208
WIRE -1144 -208 -1144 -224
WIRE -1144 -208 -1176 -208
WIRE -520 -208 -520 -224
WIRE -472 -208 -472 -240
WIRE -472 -208 -520 -208
WIRE -376 -208 -376 -224
WIRE -376 -208 -472 -208
WIRE -216 -208 -376 -208
WIRE 264 -208 264 -224
WIRE 1240 -208 1240 -240
WIRE 1384 -208 1384 -240
WIRE 1496 -208 1496 -224
WIRE -216 -192 -216 -208
WIRE -1400 -160 -1400 -208
WIRE -1080 -128 -1128 -128
WIRE -536 -128 -568 -128
WIRE 56 -128 56 -224
WIRE 168 -128 56 -128
WIRE 472 -128 168 -128
WIRE 808 -128 760 -128
WIRE 872 -128 808 -128
WIRE 984 -128 952 -128
WIRE 168 -112 168 -128
WIRE -216 -96 -216 -112
WIRE 1048 -96 984 -96
WIRE -1400 -64 -1400 -80
WIRE -1080 -32 -1112 -32
WIRE -536 -32 -568 -32
WIRE 472 -32 440 -32
WIRE 984 -32 984 -96
WIRE 984 -32 760 -32
WIRE 1064 -32 984 -32
WIRE 1240 -32 1144 -32
WIRE 1384 -32 1240 -32
WIRE 1496 -32 1384 -32
WIRE 1528 -32 1496 -32
WIRE 168 -16 168 -48
WIRE 264 -16 264 -144
WIRE 264 -16 168 -16
WIRE 1240 -16 1240 -32
WIRE 1384 -16 1384 -32
WIRE 1496 -16 1496 -32
WIRE 168 0 168 -16
WIRE -1176 64 -1208 64
WIRE -1080 64 -1112 64
WIRE -536 64 -568 64
WIRE -440 64 -472 64
WIRE 344 64 312 64
WIRE 472 64 424 64
WIRE 856 64 760 64
WIRE 1240 80 1240 48
WIRE 1384 80 1384 48
WIRE 1496 80 1496 64
WIRE -1176 160 -1208 160
WIRE -1080 160 -1112 160
WIRE -536 160 -568 160
WIRE -440 160 -472 160
WIRE 472 160 440 160
WIRE 808 160 808 -128
WIRE 808 160 760 160
WIRE 344 256 312 256
WIRE 472 256 424 256
WIRE 808 256 760 256
WIRE 808 272 808 256
WIRE 616 336 616 304
WIRE -1016 528 -1016 512
WIRE -920 528 -920 512
WIRE -632 528 -632 512
WIRE -920 608 -920 592
WIRE -1112 640 -1128 640
WIRE -1016 640 -1016 608
WIRE -1016 640 -1048 640
WIRE -824 640 -824 512
WIRE -824 640 -1016 640
WIRE -632 640 -632 608
WIRE -632 640 -824 640
FLAG -824 -496 0
FLAG -728 -496 0
FLAG -920 -592 0
FLAG -1176 -640 IN
FLAG -632 -496 0
FLAG -536 -32 0
FLAG -1112 -32 0
FLAG -440 64 0
FLAG -440 160 0
FLAG -1208 64 0
FLAG -1208 160 0
FLAG -1128 640 0
FLAG -920 608 0
FLAG -1176 -528 0
FLAG 1384 -208 0
FLAG 1528 -320 OUT1
FLAG 616 336 0
FLAG 968 -384 SW1
IOPIN 2912 1776 Out
FLAG 856 -224 ISNS1
IOPIN 2800 1936 BiDir
FLAG 808 272 0
FLAG -824 -544 VCC
FLAG 984 -128 VCC
FLAG 1240 -208 0
FLAG -136 -432 SW1
FLAG -216 -96 0
FLAG -152 -320 ISNS1
FLAG 1384 80 0
FLAG 1496 80 0
FLAG 1528 -32 OUT2
FLAG 1048 -96 SW2
IOPIN 2992 2064 Out
FLAG 856 64 ISNS2
IOPIN 2800 2224 BiDir
FLAG 1240 80 0
FLAG 312 64 VCC
FLAG 312 256 VCC
FLAG -1112 -416 PWM2
FLAG 440 160 PWM2
FLAG -1528 -432 SW2
FLAG -1400 -64 0
FLAG -1528 -320 ISNS2
FLAG -1128 -128 OUT2
IOPIN 816 2032 In
FLAG -536 -128 OUT1
IOPIN 1408 2032 In
FLAG -504 -416 PWM1
FLAG 440 -32 PWM1
FLAG 24 -224 VCC
FLAG 1496 -208 0
FLAG 168 0 0
SYMBOL voltage -1176 -640 R0
SYMATTR InstName VIN1
SYMATTR Value 12
SYMBOL cap -936 -576 R0
SYMATTR InstName C3
SYMATTR Value 1
SYMBOL cap -536 48 M90
SYMATTR InstName C5
SYMATTR Value 100p
SYMBOL cap -536 144 M90
SYMATTR InstName C9
SYMATTR Value 6800p
SYMBOL cap -1112 48 R90
SYMATTR InstName C18
SYMATTR Value 100p
SYMBOL cap -1112 144 R90
SYMATTR InstName C19
SYMATTR Value 6800p
SYMBOL cap -1048 624 R90
SYMATTR InstName C20
SYMATTR Value 1
SYMBOL cap -936 528 R0
SYMATTR InstName C21
SYMATTR Value 1
SYMBOL ind 1048 -304 R270
SYMATTR InstName L1
SYMATTR Value 0.215
SYMATTR SpiceLine Rser=0.35m
SYMBOL cap 1368 -304 R0
SYMATTR Value2 x2
SYMATTR Value 470
SYMATTR InstName C22
SYMATTR SpiceLine Rser=5m
SYMBOL res 216 -240 R90
SYMATTR InstName R12
SYMATTR Value 1
SYMBOL cap 152 -112 R0
SYMATTR InstName C23
SYMATTR Value 1
SYMBOL cap 248 -208 R0
SYMATTR InstName C24
SYMATTR Value 10
SYMBOL PowerProducts\\LTC7050 616 -32 R0
SYMATTR InstName U3
SYMBOL res 968 -144 R90
SYMATTR InstName R17
SYMATTR Value 10K
SYMBOL cap 1224 -304 R0
SYMATTR Value2 x2
SYMATTR Value 47
SYMATTR InstName C25
SYMATTR SpiceLine Rser=5m
SYMBOL cap -488 -304 R0
SYMATTR InstName C26
SYMATTR Value 3.3n
SYMBOL res -392 -320 R0
SYMATTR InstName R19
SYMATTR Value 150
SYMBOL res -184 -448 R90
SYMATTR InstName R20
SYMATTR Value 43.2K
SYMBOL cap -360 -416 R0
SYMATTR InstName C27
SYMATTR Value 47p
SYMBOL voltage -216 -208 R0
SYMATTR InstName V3
SYMATTR Value 1.5
SYMBOL res -184 -336 R90
SYMATTR InstName R21
SYMATTR Value 1m
SYMBOL res -1032 512 R0
SYMATTR InstName R22
SYMATTR Value 10K
SYMBOL ind 1048 -16 R270
SYMATTR InstName L2
SYMATTR Value 0.215
SYMATTR SpiceLine Rser=0.35m
SYMBOL cap 1368 -16 R0
SYMATTR Value2 x2
SYMATTR Value 470
SYMATTR InstName C28
SYMATTR SpiceLine Rser=5m
SYMBOL res 1480 -32 R0
SYMATTR InstName R23
SYMATTR Value 0.035
SYMBOL cap 1224 -16 R0
SYMATTR Value2 x2
SYMATTR Value 47
SYMATTR InstName C29
SYMATTR SpiceLine Rser=5m
SYMBOL res 440 48 R90
SYMATTR InstName R24
SYMATTR Value 10K
SYMBOL res 440 240 R90
SYMATTR InstName R25
SYMATTR Value 10K
SYMBOL res -1384 -448 R90
SYMATTR InstName R26
SYMATTR Value 43.2K
SYMBOL cap -1352 -416 R0
SYMATTR InstName C30
SYMATTR Value 47p
SYMBOL voltage -1400 -176 R0
SYMATTR InstName V4
SYMATTR Value 1.5
SYMBOL res -1496 -304 R270
SYMATTR InstName R27
SYMATTR Value 1m
SYMBOL cap -1192 -304 R0
SYMATTR InstName C31
SYMATTR Value 3.3n
SYMBOL res -1304 -320 R0
SYMATTR InstName R28
SYMATTR Value 150
SYMBOL res 1480 -320 R0
SYMATTR InstName R29
SYMATTR Value 0.035
SYMBOL res -648 512 R0
SYMATTR InstName R30
SYMATTR Value 10K
SYMBOL LTC3884-1 -824 -128 R0
SYMATTR InstName U1
SYMATTR SpiceLine VIN_ON=5.5 VIN_OFF=5 Vout_0=1 Vout_1=1 Ilim0_range=1 Ilim1_range=1 OC_limit0=1 OC_limit1=1 Mode_ll=1 Fault_response=2 Retry_delay=.1m gm0=3m gm1=3m Rth0=5K Rth1=5K LowDcr=0
SYMATTR SpiceLine2 Freq=500K PHs_0=0 PHs_1=180 Ton0_delay=.3m Ton0_rise=.5m Ton1_delay=.3m Ton1_rise=.5m Toff0_delay=1m Toff0_fall=2m Toff1_delay=.5m Toff1_fall=1m Vout0_range=1 Vout1_range=1 Sync=0