* SPICE netlist
V1 IN 0 12
R3 N008 0 1.2k
L1 swa N005 100 Rser=125m
L2 N005 swb 100 Rser=125m
L3 N003 N006 156 Rser=190m
L4 N006 N007 156 Rser=190m
D1 N003 N004 MBRS1100
D2 N007 N004 MBRS1100
L5 N004 OUT 15.3 Rser=20m
C2 OUT 0 1 Rser=10m
I1 OUT 0 PWL(0 0 1.5m {load}) load
D3 0 N003 MBRS1100
D4 0 N007 MBRS1100
XU2 N001 clk 0 N008 NC_01 0 swb N002 MAX22256 ;pnba VDD)CLKI)_EN)ITH)_FAULT)GND)ST2)ST1
C3 swa N002 1
R1 N001 IN 1m
C4 N001 0 10m
V2 clk 0 PULSE(0 3.3 1u 10n 10n 1u 2u)
K1 L1 L2 L3 L4 0.99854
.tran 3m startup
.param load 1A

* LTspice schematic (.asc)
Version 4.1
SHEET 1 1440 512
WIRE -656 -240 -720 -240
WIRE -608 -240 -656 -240
WIRE -480 -240 -528 -240
WIRE -720 -208 -720 -240
WIRE -480 -176 -480 -240
WIRE -480 -176 -592 -176
WIRE -592 -160 -592 -176
WIRE -480 -144 -480 -176
WIRE -400 -144 -480 -144
WIRE -64 -144 -96 -144
WIRE 48 -144 0 -144
WIRE 176 -144 48 -144
WIRE 320 -144 224 -144
WIRE 480 -144 384 -144
WIRE 512 -144 480 -144
WIRE 624 -144 592 -144
WIRE 720 -144 624 -144
WIRE 624 -128 624 -144
WIRE 720 -128 720 -144
WIRE -720 -112 -720 -128
WIRE 384 -112 384 -144
WIRE 480 -112 480 -144
WIRE -592 -80 -592 -96
WIRE -432 -48 -592 -48
WIRE -400 -48 -432 -48
WIRE -32 -48 -96 -48
WIRE -592 -32 -592 -48
WIRE 176 -32 176 -64
WIRE 224 -32 224 -64
WIRE 624 -32 624 -64
WIRE 720 -32 720 -48
WIRE 320 -16 320 -144
WIRE 384 -16 384 -48
WIRE 384 -16 320 -16
WIRE -400 48 -464 48
WIRE -64 48 -96 48
WIRE -32 48 -32 -48
WIRE 48 48 -32 48
WIRE 176 48 48 48
WIRE 480 48 480 -48
WIRE 480 48 224 48
WIRE -592 64 -592 48
WIRE -464 64 -464 48
WIRE -64 80 -64 48
WIRE 384 96 384 -16
WIRE 480 96 480 48
WIRE -400 144 -496 144
WIRE -496 160 -496 144
WIRE 384 176 384 160
WIRE 480 176 480 160
WIRE -496 256 -496 240
FLAG -64 80 0
FLAG -720 -112 0
FLAG -496 256 0
FLAG 624 -32 0
FLAG 720 -32 0
FLAG -656 -240 IN
FLAG 720 -144 OUT
FLAG 384 176 0
FLAG 480 176 0
FLAG 48 -144 swa
FLAG 48 48 swb
FLAG -592 -80 0
FLAG -464 64 0
FLAG -592 64 0
FLAG -432 -48 clk
SYMBOL voltage -720 -224 R0
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL res -512 144 R0
SYMATTR InstName R3
SYMATTR Value 1.2k
SYMBOL ind2 160 -160 R0
SYMATTR InstName L1
SYMATTR Value 100
SYMATTR Type ind
SYMATTR SpiceLine Rser=125m
SYMBOL ind2 160 -48 R0
SYMATTR InstName L2
SYMATTR Value 100
SYMATTR Type ind
SYMATTR SpiceLine Rser=125m
SYMBOL ind2 240 -160 M0
SYMATTR InstName L3
SYMATTR Value 156
SYMATTR Type ind
SYMATTR SpiceLine Rser=190m
SYMBOL ind2 240 -48 M0
SYMATTR InstName L4
SYMATTR Value 156
SYMATTR Type ind
SYMATTR SpiceLine Rser=190m
SYMBOL schottky 400 -48 R180
SYMATTR InstName D1
SYMATTR Value MBRS1100
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL schottky 496 -48 R180
SYMATTR InstName D2
SYMATTR Value MBRS1100
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL ind 496 -128 R270
SYMATTR InstName L5
SYMATTR Value 15.3
SYMATTR SpiceLine Rser=20m
SYMBOL cap 608 -128 R0
SYMATTR InstName C2
SYMATTR Value 1
SYMATTR SpiceLine Rser=10m
SYMBOL current 720 -128 R0
SYMATTR Value PWL(0 0 1.5m {load})
SYMATTR SpiceLine load
SYMATTR InstName I1
SYMBOL schottky 400 160 R180
SYMATTR InstName D3
SYMATTR Value MBRS1100
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL schottky 496 160 R180
SYMATTR InstName D4
SYMATTR Value MBRS1100
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL PowerProducts\\MAX22256 -240 -32 R0
SYMATTR InstName U2
SYMBOL cap 0 -160 R90
SYMATTR InstName C3
SYMATTR Value 1
SYMBOL res -512 -256 R90
SYMATTR InstName R1
SYMATTR Value 1m
SYMBOL cap -608 -160 R0
SYMATTR InstName C4
SYMATTR Value 10m
SYMBOL voltage -592 -48 M0
SYMATTR Value PULSE(0 3.3 1u 10n 10n 1u 2u)
SYMATTR InstName V2