Version 4 SHEET 1 2024 1276 WIRE 528 64 160 64 WIRE 528 80 528 64 WIRE 528 80 432 80 WIRE 608 80 528 80 WIRE 160 96 160 64 WIRE 432 96 432 80 WIRE 608 96 608 80 WIRE 160 128 160 96 WIRE 432 176 432 160 WIRE 432 176 384 176 WIRE 608 176 608 160 WIRE 864 176 608 176 WIRE 1024 176 864 176 WIRE 1216 176 1104 176 WIRE 1248 176 1216 176 WIRE 1360 176 1312 176 WIRE 1472 176 1360 176 WIRE 1568 176 1472 176 WIRE 432 192 432 176 WIRE 608 192 608 176 WIRE 864 192 864 176 WIRE 1360 192 1360 176 WIRE 1568 192 1568 176 WIRE 1472 208 1472 176 WIRE 160 224 160 208 WIRE 432 272 432 256 WIRE 528 272 432 272 WIRE 608 272 608 256 WIRE 608 272 528 272 WIRE 160 288 160 224 WIRE 528 288 528 272 WIRE 528 288 160 288 WIRE 768 288 752 288 WIRE 864 288 864 272 WIRE 864 288 832 288 WIRE 992 288 976 288 WIRE 1072 288 1056 288 WIRE 1168 288 1152 288 WIRE 1360 288 1360 272 WIRE 1360 288 1168 288 WIRE 1472 288 1472 272 WIRE 1568 288 1568 272 WIRE 384 304 384 176 WIRE 672 304 384 304 WIRE 1360 304 1360 288 WIRE 384 320 384 304 WIRE 672 336 672 304 WIRE 864 336 864 288 WIRE 1360 400 1360 384 WIRE 384 416 384 400 WIRE 976 416 976 288 WIRE 976 416 944 416 WIRE 1040 416 976 416 WIRE 1168 416 1168 288 WIRE 1168 416 1104 416 WIRE 480 432 464 432 WIRE 592 432 560 432 WIRE 1168 496 1168 416 WIRE 1168 496 944 496 WIRE 1216 496 1216 176 WIRE 320 560 288 560 WIRE 400 560 384 560 WIRE 528 560 480 560 WIRE 592 560 528 560 WIRE 1168 576 944 576 WIRE 528 592 528 560 WIRE 1216 608 1216 592 WIRE 528 672 528 656 WIRE 768 672 768 656 FLAG 768 672 0 FLAG 1216 608 0 FLAG 464 432 0 FLAG 528 672 0 FLAG 288 560 0 FLAG 752 288 0 FLAG 1472 288 0 FLAG 384 416 0 FLAG 1568 288 0 FLAG 1568 176 OUT FLAG 1360 400 0 FLAG 160 96 + FLAG 160 224 - SYMBOL POWERPRODUCTS\\LT1249 768 496 R0 SYMATTR InstName U1 SYMBOL NMOS 1168 496 R0 SYMATTR InstName Q1 SYMATTR Value SUD40N10-25 SYMBOL RES 1056 304 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R1 SYMATTR Value 330K SYMBOL cap 1040 432 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C1 SYMATTR Value .047µ SYMBOL cap 992 272 M90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C2 SYMATTR Value .47µ SYMBOL VOLTAGE 576 432 R90 WINDOW 0 -32 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName V2 SYMATTR Value 17 SYMBOL res 496 544 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 10K SYMBOL cap 512 592 R0 SYMATTR InstName C3 SYMATTR Value 10p SYMBOL cap 384 544 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C4 SYMATTR Value 100p SYMBOL ind 1008 192 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 4 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value 750µ SYMATTR Type ind2 SYMBOL res 848 176 R0 SYMATTR InstName R3 SYMATTR Value 1Meg SYMBOL cap 832 272 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C5 SYMATTR Value 4700p SYMBOL diode 1248 192 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D1 SYMATTR Value MUR460 SYMBOL polcap 1456 208 R0 SYMATTR InstName C6 SYMATTR Value 180µ SYMBOL diode 592 96 R0 WINDOW 3 25 57 Left 2 SYMATTR Value 1N4001 SYMATTR InstName D2 SYMBOL diode 416 192 R0 WINDOW 3 28 55 Left 2 SYMATTR Value 1N4001 SYMATTR InstName D3 SYMBOL diode 416 160 M180 WINDOW 0 36 56 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D4 SYMATTR Value 1N4001 SYMBOL diode 592 256 M180 WINDOW 0 27 53 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D5 SYMATTR Value 1N4001 SYMBOL res 368 304 R0 SYMATTR InstName R4 SYMATTR Value .2 SYMBOL voltage 160 112 R0 SYMATTR InstName V1 SYMATTR Value SINE(0 165 100) SYMBOL res 1344 288 R0 SYMATTR InstName R5 SYMATTR Value 20K SYMBOL res 1344 176 R0 SYMATTR InstName R6 SYMATTR Value 1Meg SYMBOL res 1552 176 R0 SYMATTR InstName Rload SYMATTR Value 2K TEXT 1424 616 Left 2 !.tran 300m startup TEXT 1424 640 Left 2 !.model 1N4001 D TEXT 1112 112 Bottom 2 ;LT1249 - Power Factor Controller\nActive Power Factor Correction for Universal Offline Power Systems\nInput: 90VAC to 270VAC Output: 400VDC TEXT 176 688 Left 2 ;Notes:\n If the simulation model is not found please update with the "Sync Release" command from the "Tools" menu.\n It remains the customer's responsibility to verify proper and reliable operation in the actual application.\n Component substitution and printed circuit board layout may significantly affect circuit performance or reliability.\n Contact your local sales representative for assistance. This circuit is distributed to customers only for use with LTC parts.\n Copyright © 2014 Linear Technology Inc. All rights reserved. TEXT -312 272 Center 2 ;P\nReal Power (W) TEXT -496 352 Left 2 ;Real Power = P = V x I\nApparent Power = |S| = Vrms x Irms\nPower Factor = P/ |S| TEXT -120 168 Left 2 ;Reactive\nPower\n(VAR) TEXT -312 128 Center 2 ;Complex Power (VA)\nS TEXT -496 448 Left 2 ;; Simulator and Save Options:\n.options plotwinsize=0 numdgt=15 \n.save V(+,-) I(V1)\n \n ; Power Factor Calulation:\n.meas start param 300ms\n.meas end param 400ms\n.meas P AVG -V(+,-)*I(V1) from start to end\n.meas Vrms RMS V(+,-) from start to end \n.meas Irms RMS I(V1) from start to end \n.meas S param Vrms*Irms\n.meas PF param P/S LINE Normal -488 256 -136 256 LINE Normal -136 128 -488 256 LINE Normal -136 256 -136 128 RECTANGLE Normal -536 800 64 88 2