* SPICE netlist
L1 V_Prim 0 {Xformer} Rser=1
L2 SOURCE_H V_Sec_high {Xformer} Rser=1
R1 0 SOURCE_H 10
V1 V_PACK 0 100V
M1 V_PACK GATE_H SOURCE_H SOURCE_H IPB065N15N3
D1 N005 GATE_H BZX84C15L
V2 PWM_IN 0 PULSE(0 12 0 0 0 10u 20u) Rser=0
C2 N002 N001 {Creset}
R3 GATE_H V_Sec_high 20
D3 0 NC_01 1N5819
R4 N001 PWM_IN 3
L4 V_Prim N002 300n
L3 V_Sec_low 0 {Xformer} Rser=1
M2 SOURCE_H GATE_L 0 0 IPB065N15N3
D4 P001 GATE_L BZX84C15L
R7 GATE_L V_Sec_low 2
C3 V_Sec_high V_Prim 25p
C4 V_Sec_low V_Prim 25p
D6 N005 SOURCE_H 1N5819
D2 P001 0 1N5819
D5 V_Sec_high V_Sec_high 1N5819
D7 V_Sec_low V_Sec_low 1N5819
D8 SOURCE_H NC_02 1N5819
D9 0 NC_03 1N5819
.tran 3m
K L1 L2 L3 1
.param Creset 100n
.param xFormer 300u

* LTspice schematic (.asc)
Version 4
SHEET 1 1808 1280
WIRE -152 -560 -184 -560
WIRE -56 -560 -88 -560
WIRE 200 -480 72 -480
WIRE -824 -448 -904 -448
WIRE -696 -448 -824 -448
WIRE -456 -448 -616 -448
WIRE -344 -448 -392 -448
WIRE -248 -448 -264 -448
WIRE -184 -448 -184 -560
WIRE -184 -448 -248 -448
WIRE -152 -448 -184 -448
WIRE -904 -400 -904 -448
WIRE -56 -400 -56 -560
WIRE -56 -400 -72 -400
WIRE -24 -400 -56 -400
WIRE 72 -400 72 -480
WIRE 72 -400 -24 -400
WIRE 104 -400 72 -400
WIRE 200 -400 200 -480
WIRE 200 -400 168 -400
WIRE 344 -400 200 -400
WIRE 488 -400 424 -400
WIRE 552 -400 488 -400
WIRE -152 -384 -152 -448
WIRE -72 -384 -72 -400
WIRE -120 -304 -120 -384
WIRE -104 -304 -104 -384
WIRE 600 -288 600 -384
WIRE -504 -272 -504 -320
WIRE -152 -272 -152 -304
WIRE 488 -272 488 -400
WIRE 488 -192 488 -208
WIRE -72 -112 -72 -304
WIRE 72 -112 72 -224
WIRE 72 -112 -72 -112
WIRE 488 -112 488 -128
WIRE 488 -112 72 -112
WIRE 600 -112 600 -288
WIRE 600 -112 488 -112
WIRE 600 -16 600 -112
WIRE 712 -16 600 -16
WIRE 904 -16 792 -16
WIRE 904 96 904 -16
WIRE -248 112 -248 -448
WIRE -120 112 -248 112
WIRE -8 112 -56 112
WIRE 600 160 600 -16
WIRE 232 192 72 192
WIRE -24 240 -72 240
WIRE -8 240 -8 112
WIRE -8 240 -24 240
WIRE 72 240 72 192
WIRE 72 240 -8 240
WIRE 104 240 72 240
WIRE 232 240 232 192
WIRE 232 240 168 240
WIRE 344 240 232 240
WIRE 488 240 424 240
WIRE 552 240 488 240
WIRE 600 352 600 256
WIRE 488 368 488 240
WIRE -72 512 -72 320
WIRE 72 512 72 400
WIRE 72 512 -72 512
WIRE 488 512 488 496
WIRE 488 512 72 512
WIRE 600 512 600 352
WIRE 600 512 488 512
WIRE 600 640 600 512
FLAG -152 -272 0
FLAG 904 -544 0
FLAG 904 -624 V_PACK
FLAG 600 -480 V_PACK
FLAG -904 -320 0
FLAG -824 -448 PWM_IN
FLAG 488 -400 GATE_H
FLAG 600 -288 SOURCE_H
FLAG -504 -272 0
FLAG -152 -448 V_Prim
FLAG -24 -400 V_Sec_high
FLAG 600 640 0
FLAG 488 240 GATE_L
FLAG 600 352 SOURCE_L
FLAG -24 240 V_Sec_low
FLAG 904 96 0
SYMBOL ind2 -168 -400 R0
SYMATTR InstName L1
SYMATTR Value {Xformer}
SYMATTR Type ind
SYMATTR SpiceLine Rser=1
SYMBOL ind2 -56 -288 R180
SYMATTR InstName L2
SYMATTR Value {Xformer}
SYMATTR Type ind
SYMATTR SpiceLine Rser=1
SYMBOL res 808 -32 R90
SYMATTR InstName R1
SYMATTR Value 10
SYMBOL voltage 904 -640 R0
SYMATTR InstName V1
SYMATTR Value 100V
SYMBOL nmos 552 -480 R0
SYMATTR InstName M1
SYMATTR Value IPB065N15N3
SYMBOL zener 504 -208 R180
SYMATTR InstName D1
SYMATTR Value BZX84C15L
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL voltage -904 -416 R0
SYMATTR SpiceLine Rser=0
SYMATTR InstName V2
SYMATTR Value PULSE(0 12 0 0 0 10u 20u)
SYMBOL cap -392 -464 R90
SYMATTR InstName C2
SYMATTR Value {Creset}
SYMBOL res 440 -416 R90
SYMATTR InstName R3
SYMATTR Value 20
SYMBOL schottky -488 -320 R180
SYMATTR InstName D3
SYMATTR Value 1N5819
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res -600 -464 R90
SYMATTR InstName R4
SYMATTR Value 3
SYMBOL ind2 -248 -464 R90
SYMATTR InstName L4
SYMATTR Value 300n
SYMATTR Type ind
SYMBOL ind2 -88 224 R0
SYMATTR InstName L3
SYMATTR Value {Xformer}
SYMATTR Type ind
SYMATTR SpiceLine Rser=1
SYMBOL nmos 552 160 R0
SYMATTR InstName M2
SYMATTR Value IPB065N15N3
SYMBOL zener 504 432 R180
SYMATTR InstName D4
SYMATTR Value BZX84C15L
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res 440 224 R90
SYMATTR InstName R7
SYMATTR Value 2
SYMBOL cap -88 -576 R90
SYMATTR InstName C3
SYMATTR Value 25p
SYMBOL cap -56 96 R90
SYMATTR InstName C4
SYMATTR Value 25p
SYMBOL schottky 472 -192 R0
SYMATTR InstName D6
SYMATTR Value 1N5819
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL schottky 472 432 R0
SYMATTR InstName D2
SYMATTR Value 1N5819
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL schottky 104 -384 R270
SYMATTR InstName D5
SYMATTR Value 1N5819
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL schottky 104 256 R270
SYMATTR InstName D7
SYMATTR Value 1N5819
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL schottky 88 -224 R180
SYMATTR InstName D8
SYMATTR Value 1N5819
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL schottky 88 400 R180
SYMATTR InstName D9
SYMATTR Value 1N5819
SYMATTR Description Diode
SYMATTR Type diode