Version 4 SHEET 1 1100 852 WIRE -176 -128 -272 -128 WIRE 32 -128 -176 -128 WIRE 736 -128 464 -128 WIRE -272 -96 -272 -128 WIRE 160 -96 160 -128 WIRE 32 -80 32 -128 WIRE 32 -80 -112 -80 WIRE 464 -80 464 -128 WIRE -112 -64 -112 -80 WIRE 736 -64 736 -128 WIRE -272 16 -272 -16 WIRE -112 16 -112 0 WIRE 160 16 160 -16 WIRE 32 32 32 -80 WIRE 0 48 -48 48 WIRE 464 48 464 0 WIRE 736 48 736 16 WIRE 144 64 64 64 WIRE 208 64 144 64 WIRE -592 80 -656 80 WIRE -448 80 -592 80 WIRE -336 80 -368 80 WIRE 0 80 -336 80 WIRE -656 112 -656 80 WIRE -176 112 -176 -128 WIRE -112 112 -176 112 WIRE 32 112 32 96 WIRE -336 128 -336 80 WIRE -176 128 -176 112 WIRE 208 128 208 64 WIRE -48 160 -48 48 WIRE 48 160 -48 160 WIRE 144 160 144 64 WIRE 144 160 112 160 WIRE 464 160 464 128 WIRE -48 176 -48 160 WIRE -176 208 -176 192 WIRE -656 224 -656 192 WIRE -336 224 -336 192 WIRE 208 240 208 208 WIRE 256 240 208 240 WIRE 368 240 336 240 WIRE 416 240 368 240 WIRE 208 272 208 240 WIRE 368 272 368 240 WIRE 464 272 464 256 WIRE 576 272 464 272 WIRE -112 288 -112 112 WIRE -144 304 -240 304 WIRE 464 304 464 272 WIRE -48 320 -48 256 WIRE -48 320 -80 320 WIRE 32 320 -48 320 WIRE -144 336 -192 336 WIRE -48 336 -48 320 WIRE 32 352 32 320 WIRE -112 368 -112 352 WIRE 208 400 208 352 WIRE 368 400 368 352 WIRE 464 432 464 384 WIRE -240 448 -240 304 WIRE -128 448 -240 448 WIRE -48 448 -48 416 WIRE -48 448 -128 448 WIRE 32 448 32 416 WIRE 32 448 -48 448 WIRE 144 448 144 160 WIRE -48 464 -48 448 WIRE -128 480 -128 448 WIRE -128 560 -128 544 WIRE -48 560 -48 544 WIRE -192 608 -192 336 WIRE 144 608 144 512 WIRE 144 608 -192 608 WIRE 304 608 144 608 WIRE 576 608 576 272 WIRE 576 608 384 608 FLAG 464 432 0 FLAG 368 400 0 FLAG -48 560 0 FLAG -272 16 0 FLAG -656 224 0 FLAG -176 208 0 FLAG -112 16 0 FLAG 736 48 0 FLAG -128 560 0 FLAG 208 400 0 FLAG 160 16 0 FLAG 160 -128 V- FLAG 576 272 vs FLAG -592 80 vc FLAG -112 368 V- FLAG 32 112 V- FLAG -336 224 0 SYMBOL res 448 288 R0 SYMATTR InstName R17 SYMATTR Value .001 SYMATTR SpiceLine tol=.1 pwr=10 SYMBOL res 352 256 R0 SYMATTR InstName R15 SYMATTR Value 2.2k SYMATTR SpiceLine tol=1 pwr=.5 SYMBOL res -64 320 R0 SYMATTR InstName R13 SYMATTR Value 470k SYMATTR SpiceLine tol=.1 pwr=.5 SYMBOL res -64 448 R0 SYMATTR InstName R14 SYMATTR Value 1.5k SYMATTR SpiceLine tol=.1 pwr=1 SYMBOL voltage -272 -112 R0 WINDOW 123 0 0 Left 0 WINDOW 0 -84 52 Left 0 SYMATTR InstName V1 SYMATTR SpiceLine Rser=.00000000001 SYMATTR Value 12 SYMBOL voltage -656 96 R0 WINDOW 3 -11 184 Left 0 WINDOW 39 37 80 Left 0 WINDOW 0 38 47 Left 0 SYMATTR Value PULSE(1 5 10u .1m .1m 1.8m 4m) SYMATTR SpiceLine Rser=1 SYMATTR InstName V2 SYMATTR Value2 AC AC 1 SYMBOL res 448 -96 R0 WINDOW 0 39 52 Left 0 WINDOW 3 44 76 Left 0 SYMATTR InstName R46 SYMATTR Value .24 SYMATTR SpiceLine tol=1 pwr=100 SYMBOL res 448 32 R0 WINDOW 0 44 52 Left 0 WINDOW 3 49 73 Left 0 SYMATTR InstName R47 SYMATTR Value .24 SYMATTR SpiceLine tol=1 pwr=100 SYMBOL nmos 416 160 R0 SYMATTR InstName M1 SYMATTR Value IRFP3703 SYMATTR Prefix X SYMBOL res -64 160 R0 SYMATTR InstName R42 SYMATTR Value 10k SYMATTR SpiceLine tol=1 pwr=.5 SYMBOL cap -128 -64 R0 WINDOW 0 45 34 Left 0 SYMATTR InstName C1 SYMATTR Value .1µ SYMBOL cap -192 128 R0 WINDOW 0 46 25 Left 0 WINDOW 3 30 58 Left 0 SYMATTR InstName C2 SYMATTR Value .1µ SYMBOL res 400 592 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R43 SYMATTR Value 1k SYMATTR SpiceLine tol=1 pwr=1 SYMBOL res 352 224 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R16 SYMATTR Value 150 SYMATTR SpiceLine tol=1 pwr=1 SYMBOL voltage 736 -80 R0 WINDOW 123 0 0 Left 0 WINDOW 0 -84 52 Left 0 WINDOW 3 -41 13 Left 0 SYMATTR InstName V3 SYMATTR Value 12 SYMATTR SpiceLine Rser=.00000000001 SYMBOL res 192 112 R0 SYMATTR InstName R44 SYMATTR Value 470 SYMBOL res 192 256 R0 WINDOW 3 33 76 Left 0 SYMATTR Value 560 SYMATTR InstName R45 SYMBOL cap 128 448 R0 SYMATTR InstName C3 SYMATTR Value 1n SYMBOL cap -144 480 R0 SYMATTR InstName C4 SYMATTR Value 1f SYMBOL voltage 160 -112 R0 SYMATTR InstName V4 SYMATTR Value 0 SYMBOL cap 16 352 R0 SYMATTR InstName C5 SYMATTR Value 100p SYMBOL cap 48 176 R270 WINDOW 0 32 32 VTop 0 WINDOW 3 0 32 VBottom 0 SYMATTR InstName C6 SYMATTR Value 100p SYMBOL Opamps\\LT1218 32 0 R0 SYMATTR InstName U1 SYMBOL Opamps\\LT1218 -112 256 R0 WINDOW 3 -46 155 Left 0 SYMATTR InstName U2 SYMBOL res -464 96 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R1 SYMATTR Value 10k SYMBOL cap -352 128 R0 SYMATTR InstName C7 SYMATTR Value 15n TEXT -656 -56 Left 0 ;.dc V2 0 7.86 .1 TEXT -656 -32 Left 0 !.tran 0 20m 0 20u TEXT -656 -8 Left 0 ;.ac dec 100 1 100k TEXT 512 192 Left 0 !.include irfp3703.lib TEXT -656 16 Left 0 !;op TEXT -616 344 Left 0 ;Voltage Controlled Current Sink TEXT -616 376 Left 0 ;0 - 7.86 volts in = 0 - 25A out TEXT -616 408 Left 0 ;Full Power Bandwidth\n400 Hz @ 100% output 3.3 v \n750 Hz @ 100% output 5 v\n350 Hz @ 100% output 12 v TEXT 488 296 Left 0 ;shunt TEXT 472 -96 Left 0 ;0.24 Ohm full load 12 v TEXT 496 136 Left 0 ;0.24 Ohm full load 12 v TEXT -616 536 Left 0 ;Modeled Stable from idle \nthrough 100% of full current to\nCurrent Mode limiting 400% full load TEXT -656 -80 Left 0 ;VCCS revision[5] TEXT 552 96 Left 0 ;100 Ohms Minimum Load TEXT 552 64 Left 0 ;For All Ranges TEXT 248 -8 Left 0 ;0 - 6.52 v at \nnode R44 - R16\n \n0 - 6.1 v at\nnode R16 - R15 TEXT -184 592 Left 0 ;C4 removed, C5 and C6 added TEXT 208 -128 Left 0 ;0V = single supply TEXT -272 -144 Left 0 ;Keep C5 as small as possible TEXT -480 152 Left 0 ;rise time\nlimiter LINE Normal -80 560 -176 496 LINE Normal -80 496 -176 560 RECTANGLE Normal 96 464 -16 304 RECTANGLE Normal 112 208 48 112 RECTANGLE Normal -288 256 -512 32