Version 4 SHEET 1 880 680 WIRE 208 -208 144 -208 WIRE 400 -208 336 -208 WIRE 496 -208 464 -208 WIRE 144 -160 144 -208 WIRE 256 -160 256 -208 WIRE 496 -160 496 -208 WIRE 144 -48 144 -80 WIRE 256 -48 256 -80 WIRE 496 -48 496 -80 WIRE 400 96 400 -208 WIRE 272 112 144 112 WIRE 208 144 208 -208 WIRE 144 160 144 112 WIRE 176 160 144 160 WIRE 272 176 272 112 WIRE 272 176 240 176 WIRE 352 176 272 176 WIRE 176 192 -144 192 WIRE -144 224 -144 192 WIRE 400 272 400 192 WIRE -144 320 -144 304 WIRE 144 368 144 336 WIRE 400 464 400 352 WIRE 144 480 144 448 WIRE 208 480 208 208 WIRE 208 480 144 480 FLAG 256 -48 0 FLAG 144 336 0 FLAG -144 320 0 FLAG 400 464 0 FLAG 496 -48 0 FLAG 144 -48 0 SYMBOL Opamps\\LT1028A 208 112 R0 SYMATTR InstName U1 SYMBOL voltage 256 -176 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value 15 SYMBOL voltage 144 352 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V2 SYMATTR Value 15 SYMBOL voltage -144 208 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V3 SYMATTR Value PULSE(0 12 0 0 0 200u 400u) SYMBOL res 384 256 R0 SYMATTR InstName R1 SYMATTR Value 1k SYMBOL nmos 352 96 R0 SYMATTR InstName M1 SYMATTR Value Si4820DY SYMBOL ind 240 -192 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value 130n SYMATTR SpiceLine Ipk=22 Rser=0.00091 Rpar=207 Cpar=680f mfg="Wurth Elektronik" pn="744310013 WE-HCI 7030" SYMBOL polcap 464 -224 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C1 SYMATTR Value 10µ SYMATTR Description Capacitor SYMATTR Type cap SYMATTR SpiceLine V=35 Irms=0 Rser=0.3 Lser=0 mfg="AVX" pn="TPSD106M035R0300" type="Tantalum" SYMBOL voltage 496 -176 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 WINDOW 3 24 44 Left 2 SYMATTR InstName V4 SYMATTR Value SINE(0 1 10k) SYMBOL voltage 144 -176 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V5 SYMATTR Value 15 TEXT -144 488 Left 2 !.tran 0.001