* SPICE netlist
R1 N008 0 115K
C1 0 N007 1n
C2 N006 0 1n
R2 N002 0 90K
R3 0 N003 20K
C3 OUT1 0 330 x4
C4 OUT2 0 330 x4
C5 OUT1 0 100 x2
R4 OUT1 0 .1
C6 OUT2 0 100 x2
R5 OUT2 0 .12
V1 IN 0 12
XU1 N007 N005 N003 NC_01 NC_02 NC_03 0 N008 Vcc N004 N006 N002 0 MP_04 OUT1 MP_05 NC_06 NC_07 MP_08 MP_09 NC_10 MP_11 N001 IN MP_12 Vcc NC_13 MP_14 MP_15 NC_16 MP_17 MP_18 NC_19 NC_20 MP_21 OUT2 MP_22 0 MP_23 N004 N005 IN IN OUT1 OUT2 LTM4646 ;pnba Track/SS2)Comp2A)Vfb2)PhasMD)Mode/PLLIN)Clkout)SGND)Freq)Vrng)Comp1A)Track/SS1)Vfb1)VoutS1-))Vout1))Run1)Pgood1)))SW1))DRVcc)Cpwr))IntVcc)ExtVcc)))SW2)))Pgood2)Run2))Vout2))VoutS2-))Comp1B)Comp2B)Vin1)Vin2)VoutS1)VoutS2
C7 0 N001 10
.tran .8m startup

* LTspice schematic (.asc)
Version 4
SHEET 1 1664 1136
WIRE -304 -552 -304 -568
WIRE 32 -472 -448 -472
WIRE 512 -472 32 -472
WIRE 160 -456 144 -456
WIRE -304 -440 -304 -488
WIRE 32 -440 32 -472
WIRE 144 -440 144 -456
WIRE -448 -376 -448 -472
WIRE -448 -376 -592 -376
WIRE -416 -376 -448 -376
WIRE 512 -376 512 -472
WIRE 512 -376 480 -376
WIRE -592 -360 -592 -376
WIRE -592 -264 -592 -280
WIRE -704 -184 -816 -184
WIRE -576 -184 -704 -184
WIRE -448 -184 -576 -184
WIRE -416 -184 -448 -184
WIRE 512 -184 480 -184
WIRE 592 -184 512 -184
WIRE 720 -184 592 -184
WIRE 832 -184 720 -184
WIRE -816 -168 -816 -184
WIRE -704 -168 -704 -184
WIRE -576 -168 -576 -184
WIRE 592 -168 592 -184
WIRE 720 -168 720 -184
WIRE 832 -168 832 -184
WIRE -448 -88 -448 -184
WIRE -416 -88 -448 -88
WIRE 512 -88 512 -184
WIRE 512 -88 480 -88
WIRE -816 -72 -816 -88
WIRE -704 -72 -704 -104
WIRE -576 -72 -576 -104
WIRE 592 -72 592 -104
WIRE 720 -72 720 -104
WIRE 832 -72 832 -88
WIRE -416 8 -448 8
WIRE 512 8 480 8
WIRE -512 104 -528 104
WIRE -416 104 -432 104
WIRE 496 104 480 104
WIRE 608 104 576 104
WIRE -416 200 -448 200
WIRE 512 200 480 200
WIRE -448 296 -448 200
WIRE -416 296 -448 296
WIRE 512 296 512 200
WIRE 512 296 480 296
WIRE -496 392 -528 392
WIRE -416 392 -432 392
WIRE 512 392 480 392
WIRE 592 392 576 392
WIRE -304 472 -304 456
WIRE -80 472 -80 456
WIRE 32 472 32 456
WIRE -80 568 -80 552
FLAG 32 472 0
FLAG -80 568 0
FLAG 592 392 0
FLAG -528 392 0
FLAG -528 104 0
FLAG 608 104 0
FLAG -576 -72 0
FLAG 592 -72 0
FLAG -448 8 0
FLAG -704 -72 0
FLAG -816 -72 0
FLAG 720 -72 0
FLAG 832 -72 0
FLAG 512 8 0
FLAG -592 -264 0
FLAG -592 -376 IN
FLAG 160 -456 Vcc
FLAG -304 472 Vcc
FLAG -816 -184 OUT1
FLAG 832 -184 OUT2
FLAG -304 -568 0
SYMBOL res -96 456 R0
SYMATTR InstName R1
SYMATTR Value 115K
SYMBOL cap 576 376 R90
SYMATTR InstName C1
SYMATTR Value 1n
SYMBOL cap -432 376 R90
SYMATTR InstName C2
SYMATTR Value 1n
SYMBOL res -416 88 R90
SYMATTR InstName R2
SYMATTR Value 90K
SYMBOL res 592 88 R90
SYMATTR InstName R3
SYMATTR Value 20K
SYMBOL cap -592 -168 R0
SYMATTR Value2 x4
SYMATTR Value 330
SYMATTR InstName C3
SYMBOL cap 576 -168 R0
SYMATTR Value2 x4
SYMATTR Value 330
SYMATTR InstName C4
SYMBOL cap -720 -168 R0
SYMATTR Value2 x2
SYMATTR Value 100
SYMATTR InstName C5
SYMBOL res -832 -184 R0
SYMATTR InstName R4
SYMATTR Value .1
SYMBOL cap 704 -168 R0
SYMATTR Value2 x2
SYMATTR Value 100
SYMATTR InstName C6
SYMBOL res 816 -184 R0
SYMATTR InstName R5
SYMATTR Value .12
SYMBOL voltage -592 -376 R0
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL PowerProducts\\LTM4646 32 8 R0
SYMATTR InstName U1
SYMBOL cap -320 -552 R0
SYMATTR InstName C7
SYMATTR Value 10