Version 4 SHEET 1 2172 928 WIRE 0 -272 0 -304 WIRE 0 -144 0 -192 WIRE 0 -144 -112 -144 WIRE 0 -80 0 -144 WIRE -48 -64 -112 -64 WIRE 0 48 0 16 WIRE 48 48 0 48 WIRE 176 48 128 48 WIRE 176 80 176 48 WIRE 416 128 256 128 WIRE 448 128 416 128 WIRE 608 128 528 128 WIRE 256 144 256 128 WIRE 416 160 416 128 WIRE 608 160 608 128 WIRE -96 176 -304 176 WIRE 176 176 176 160 WIRE 176 176 -16 176 WIRE 176 192 176 176 WIRE -304 208 -304 176 WIRE 256 256 256 224 WIRE 416 256 416 240 WIRE 416 256 256 256 WIRE 528 256 416 256 WIRE 608 256 608 224 WIRE 608 256 528 256 WIRE -304 304 -304 288 WIRE 48 320 0 320 WIRE 176 320 176 272 WIRE 176 320 128 320 WIRE 0 352 0 320 WIRE -48 432 -112 432 WIRE 528 464 528 256 WIRE 0 512 0 448 WIRE 0 512 -112 512 WIRE 0 624 0 512 FLAG 0 624 0 FLAG 0 -304 0 FLAG -304 304 0 FLAG 528 464 0 SYMBOL ind2 192 288 R180 WINDOW 0 36 80 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName Lpri2 SYMATTR Value 264µH SYMATTR Type ind SYMBOL ind2 192 176 R180 WINDOW 0 36 80 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName Lpri1 SYMATTR Value 264µH SYMATTR Type ind SYMBOL ind2 240 240 M180 WINDOW 0 36 80 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName Lsec SYMATTR Value 6.6mH SYMATTR Type ind SYMBOL voltage -112 -48 R180 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value PULSE(0 3.3 0 0 0 10us 25us 8) SYMBOL voltage -112 416 M0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V2 SYMATTR Value PULSE(0 3.3V 12.5us 0 0 10us 25us 8) SYMBOL cap 592 160 R0 SYMATTR InstName C1 SYMATTR Value 2400pF SYMBOL nmos -48 16 M180 SYMATTR InstName M1 SYMATTR Value BSS138/FAI SYMATTR Prefix X SYMBOL nmos -48 352 R0 SYMATTR InstName M2 SYMATTR Value BSS138/FAI SYMATTR Prefix X SYMBOL voltage -304 192 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName Vcc SYMATTR Value 3.3V SYMBOL res 0 160 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 1 SYMBOL res 32 336 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R2 SYMATTR Value 30 SYMBOL res 144 32 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R3 SYMATTR Value 30 SYMBOL res 544 112 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R6 SYMATTR Value 2 SYMBOL res 400 144 R0 SYMATTR InstName R7 SYMATTR Value 10k SYMBOL res -16 -288 R0 SYMATTR InstName R8 SYMATTR Value 0.001 TEXT 224 328 Left 2 !K1 Lpri1 Lpri2 Lsec 1 TEXT -512 632 Left 2 !.tran 1000us uic TEXT 1120 -432 Left 2 !*BSS138 ELECTRICAL MODEL (SOT-23 Single N-Ch DMOS)\n*-----------------------\n.SUBCKT BSS138/FAI 20 10 30\nRg 10 1 1\nM1 2 1 3 3 DMOS L=1u W=1u\n.MODEL DMOS NMOS (VTO={1.3*{-0.002*TEMP+1.05}} KP={-0.0014*TEMP+0.685} \n+ THETA=0.086 VMAX=2.2E5 LEVEL=3) \nCgs 1 3 40p\nRd 20 4 0.2 TC=0.0065\nDds 3 4 DDS\n.MODEL DDS D(BV={50*{0.00084*TEMP+0.979}} M=0.36 CJO=23p VJ=0.8)\nDbody 3 20 DBODY\n.MODEL DBODY D(IS=1.4E-13 N=1 RS=40m TT=100n)\nRa 4 2 0.3 TC=0.0065\nRs 3 5 10m\nLs 5 30 .5n\nM2 1 8 6 6 INTER\nE2 8 6 4 1 2\n.MODEL INTER NMOS(VTO=0 KP=10 LEVEL=1)\nCgdmax 7 4 68p\nRcgd 7 4 10meg\nDgd 6 4 DGD\nRdgd 4 6 10meg\n.MODEL DGD D(M=0.3 CJO=68p VJ=0.4)\nM3 7 9 1 1 INTER\nE3 9 1 4 1 -2\n.ENDS \n*$