Version 4 SHEET 1 1472 1508 WIRE -208 192 -320 192 WIRE 0 192 -208 192 WIRE 400 192 0 192 WIRE 672 192 400 192 WIRE -320 208 -320 192 WIRE 400 224 400 192 WIRE 464 224 400 224 WIRE 880 224 528 224 WIRE 992 224 944 224 WIRE 1072 224 992 224 WIRE 1216 224 1072 224 WIRE 464 240 464 224 WIRE 528 240 528 224 WIRE 1072 240 1072 224 WIRE 1216 240 1216 224 WIRE -320 304 -320 288 WIRE 288 304 288 288 WIRE -208 320 -208 192 WIRE 464 336 464 320 WIRE 528 336 528 320 WIRE 528 336 464 336 WIRE 1072 336 1072 304 WIRE 1216 336 1216 320 WIRE 464 352 464 336 WIRE 0 368 0 192 WIRE 144 368 144 352 WIRE -208 432 -208 400 WIRE -80 432 -208 432 WIRE 416 432 368 432 WIRE -208 448 -208 432 WIRE 672 496 672 192 WIRE 768 496 672 496 WIRE 896 496 832 496 WIRE 992 496 992 224 WIRE 992 496 960 496 WIRE 464 528 464 448 WIRE 464 528 368 528 WIRE 768 528 768 496 WIRE 832 528 832 496 WIRE -208 544 -208 528 WIRE 464 544 464 528 WIRE -80 624 -96 624 WIRE 384 624 368 624 WIRE 768 624 768 608 WIRE 832 624 832 608 WIRE 832 624 768 624 WIRE 464 640 464 624 WIRE 768 640 768 624 WIRE 720 720 368 720 WIRE 768 752 768 736 WIRE 768 752 672 752 WIRE 768 768 768 752 WIRE -176 816 -192 816 WIRE -80 816 -96 816 WIRE 672 816 672 752 WIRE 672 816 368 816 WIRE 768 864 768 848 WIRE 992 880 992 496 WIRE -80 912 -96 912 WIRE 384 912 368 912 WIRE 992 1008 992 960 WIRE 992 1008 368 1008 WIRE 992 1024 992 1008 WIRE 496 1104 368 1104 WIRE 992 1120 992 1104 WIRE -80 1200 -96 1200 WIRE 384 1200 368 1200 WIRE 0 1280 0 1264 WIRE 288 1280 288 1264 FLAG -320 304 0 FLAG 1072 336 0 FLAG 1216 224 OUT FLAG -320 192 IN FLAG 0 1280 0 FLAG -192 816 0 FLAG 992 1120 0 FLAG -208 544 0 FLAG 464 640 0 FLAG 144 288 0 FLAG 288 1280 0 FLAG 448 1200 0 FLAG -96 624 0 FLAG -96 912 0 FLAG -96 1200 0 FLAG 560 1104 0 FLAG 384 624 0 FLAG 384 912 0 FLAG 768 864 0 FLAG 288 288 0 FLAG 1216 336 0 SYMBOL voltage -320 192 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V1 SYMATTR Value 12 SYMBOL ind2 544 224 M0 WINDOW 0 -1 42 Right 0 WINDOW 3 -1 76 Right 0 SYMATTR InstName L1 SYMATTR Value 90µ SYMBOL ind2 448 336 M180 WINDOW 0 -1 68 Right 0 WINDOW 3 0 36 Right 0 SYMATTR InstName L2 SYMATTR Value 10µ SYMBOL cap 1056 240 R0 SYMATTR InstName C1 SYMATTR Value {330µ/10} SYMATTR SpiceLine Rser=0.01 SYMBOL diode 880 240 R270 WINDOW 0 32 32 VTop 0 WINDOW 3 0 32 VBottom 0 SYMATTR InstName D1 SYMATTR Value UPSC600 SYMBOL nmos 416 352 R0 WINDOW 3 64 71 Left 0 WINDOW 0 54 22 Left 0 SYMATTR Value BSC028N06LS3 SYMATTR InstName Q1 SYMBOL res -80 800 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R1 SYMATTR Value 66.5K SYMBOL res 976 864 R0 SYMATTR InstName R2 SYMATTR Value 475K SYMBOL res 976 1008 R0 SYMATTR InstName R3 SYMATTR Value 4.87K SYMBOL res -224 304 R0 SYMATTR InstName R4 SYMATTR Value 84.5K SYMBOL res -224 432 R0 SYMATTR InstName R5 SYMATTR Value 24.9K SYMBOL res 448 528 R0 SYMATTR InstName R6 SYMATTR Value 2m SYMBOL cap 128 288 R0 WINDOW 0 35 18 Left 0 WINDOW 3 33 52 Left 0 SYMATTR InstName C2 SYMATTR Value 4.7µ SYMBOL PowerProducts\\LTC3862 144 768 R0 SYMATTR InstName U1 SYMBOL cap 448 1184 R90 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 SYMATTR InstName C3 SYMATTR Value .001µ SYMBOL cap 272 304 R0 WINDOW 0 35 12 Left 0 WINDOW 3 25 51 Left 0 SYMATTR InstName C4 SYMATTR Value .001µ SYMBOL cap 560 1088 R90 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 WINDOW 39 57 16 VTop 0 SYMATTR InstName C5 SYMATTR Value .01µ SYMATTR SpiceLine Rser=50K Cpar=100p SYMBOL ind2 848 512 M0 WINDOW 0 -7 32 Right 0 WINDOW 3 -10 66 Right 0 SYMATTR InstName L3 SYMATTR Value 90µ SYMBOL ind2 752 624 M180 WINDOW 0 -1 77 Right 0 WINDOW 3 -3 42 Right 0 SYMATTR InstName L4 SYMATTR Value 10µ SYMBOL diode 896 512 R270 WINDOW 0 32 32 VTop 0 WINDOW 3 0 32 VBottom 0 SYMATTR InstName D2 SYMATTR Value UPSC600 SYMBOL nmos 720 640 R0 WINDOW 3 59 66 Left 0 SYMATTR Value BSC028N06LS3 SYMATTR InstName Q2 SYMBOL res 752 752 R0 SYMATTR InstName R7 SYMATTR Value 2m SYMBOL res 1200 224 R0 SYMATTR InstName Rload SYMATTR Value 60 TEXT 496 224 Bottom 0 !K1 L1 L2 1 TEXT 480 136 Bottom 0 ;LTC3862 - Multi-Phase Current Mode Step-Up DC/DC Controller\nHigh Power, High Voltage Boost Converter with Tapped Inductor Topology\nInput: 12V Output: 120V @ 2.0A TEXT 960 1224 Left 0 !.tran 1m startup TEXT 800 496 Bottom 0 !K2 L3 L4 1 TEXT 496 192 Bottom 0 ;1:3 turns ratio TEXT -272 1296 Left 0 ;Notes:\n C1 has been reduced in value to speed up simulation.\n \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 © 2011 Linear Technology Inc. All rights reserved. TEXT 800 464 Bottom 0 ;1:3 turns ratio LINE Normal 496 320 496 240 2 LINE Normal 800 608 800 528 2