Version 4 SHEET 1 2888 1300 WIRE -624 -528 -720 -528 WIRE -480 -528 -624 -528 WIRE -368 -528 -480 -528 WIRE -112 -528 -368 -528 WIRE -48 -528 -112 -528 WIRE 80 -528 32 -528 WIRE 768 -528 80 -528 WIRE 800 -528 768 -528 WIRE 880 -528 864 -528 WIRE -720 -512 -720 -528 WIRE -624 -512 -624 -528 WIRE -368 -496 -368 -528 WIRE 1552 -480 176 -480 WIRE -112 -448 -112 -528 WIRE -96 -448 -112 -448 WIRE -16 -448 -32 -448 WIRE 0 -448 -16 -448 WIRE 80 -448 80 -528 WIRE 1408 -448 272 -448 WIRE -720 -416 -720 -432 WIRE -624 -416 -624 -448 WIRE 368 -384 -560 -384 WIRE 464 -384 368 -384 WIRE 608 -384 464 -384 WIRE 656 -384 608 -384 WIRE -368 -352 -368 -416 WIRE -256 -352 -368 -352 WIRE 464 -352 464 -384 WIRE 608 -352 608 -384 WIRE -368 -336 -368 -352 WIRE -112 -320 -112 -448 WIRE -16 -320 -16 -448 WIRE 80 -320 80 -448 WIRE 176 -320 176 -480 WIRE 272 -320 272 -448 WIRE 368 -320 368 -384 WIRE -480 -256 -480 -528 WIRE -256 -256 -256 -352 WIRE -176 -256 -256 -256 WIRE 464 -256 464 -288 WIRE 464 -256 432 -256 WIRE 976 -256 464 -256 WIRE -368 -240 -368 -256 WIRE -480 -160 -480 -176 WIRE -176 -160 -480 -160 WIRE 608 -160 608 -288 WIRE 608 -160 432 -160 WIRE 1296 -160 1040 -160 WIRE 1408 -160 1408 -448 WIRE 1408 -160 1296 -160 WIRE 1440 -160 1408 -160 WIRE 1552 -160 1552 -480 WIRE 1552 -160 1520 -160 WIRE 1616 -160 1552 -160 WIRE -480 -144 -480 -160 WIRE 608 -144 608 -160 WIRE 768 -144 768 -528 WIRE 1040 -144 1040 -160 WIRE 1616 -144 1616 -160 WIRE 1296 -128 1296 -160 WIRE 1408 -128 1408 -160 WIRE 976 -96 976 -256 WIRE -176 -64 -192 -64 WIRE 720 -64 432 -64 WIRE 1248 -64 1088 -64 WIRE -480 -48 -480 -64 WIRE 1296 -48 1296 -64 WIRE 1408 -48 1408 -64 WIRE 1616 -48 1616 -64 WIRE -176 32 -192 32 WIRE 608 32 608 -80 WIRE 608 32 432 32 WIRE 768 32 768 -48 WIRE 768 32 608 32 WIRE 848 32 768 32 WIRE 976 32 976 -32 WIRE 976 32 928 32 WIRE 1040 32 1040 -48 WIRE 1040 32 976 32 WIRE 1216 32 1040 32 WIRE 768 48 768 32 WIRE 1040 48 1040 32 WIRE -176 128 -192 128 WIRE 720 128 432 128 WIRE -560 224 -560 -384 WIRE -448 224 -560 224 WIRE -176 224 -368 224 WIRE 768 224 768 144 WIRE 768 224 432 224 WIRE 1040 224 1040 144 WIRE 1040 224 768 224 WIRE 768 240 768 224 WIRE -560 320 -560 224 WIRE -448 320 -560 320 WIRE -272 320 -368 320 WIRE -176 320 -272 320 WIRE 768 320 432 320 WIRE 768 336 768 320 WIRE -272 416 -272 320 WIRE -176 416 -272 416 WIRE 448 416 432 416 WIRE -352 512 -368 512 WIRE -272 512 -288 512 WIRE -176 512 -272 512 WIRE 1088 512 1088 128 WIRE 1088 512 432 512 WIRE -272 608 -272 512 WIRE -176 608 -272 608 WIRE 1216 608 1216 32 WIRE 1216 608 432 608 WIRE -272 704 -272 608 WIRE -176 704 -272 704 WIRE 1248 704 1248 -64 WIRE 1248 704 432 704 WIRE -272 736 -272 704 WIRE 1552 736 1552 -160 WIRE -112 784 -112 768 WIRE 48 784 48 768 WIRE 208 784 208 768 WIRE 288 784 288 768 WIRE -272 832 -272 816 WIRE -32 832 -32 768 WIRE -32 832 -272 832 WIRE 128 832 128 768 WIRE 128 832 96 832 WIRE 368 832 368 768 WIRE 1552 832 1552 816 WIRE 1552 832 368 832 WIRE -32 848 -32 832 WIRE 96 848 96 832 WIRE 1552 848 1552 832 WIRE 208 880 208 864 WIRE -32 928 -32 912 WIRE 96 944 96 928 WIRE 1552 944 1552 928 WIRE 208 960 208 944 FLAG -112 784 0 FLAG -32 928 0 FLAG 48 784 0 FLAG 208 960 0 FLAG -720 -416 0 FLAG -368 -240 0 FLAG 720 -384 0 FLAG -480 -48 0 FLAG 96 944 0 FLAG -368 512 0 FLAG 448 416 0 FLAG 768 336 0 FLAG 1552 944 0 FLAG -720 -528 IN FLAG 1616 -160 OUT FLAG 1296 -48 0 FLAG 1408 -48 0 FLAG 1616 -48 0 FLAG 880 -528 0 FLAG -624 -416 0 SYMBOL cap -48 848 R0 SYMATTR InstName C1 SYMATTR Value 33n SYMBOL cap 192 880 R0 SYMATTR Value 10n SYMATTR InstName C2 SYMBOL voltage -720 -528 R0 SYMATTR InstName V1 SYMATTR Value 20 SYMBOL res -64 -512 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R1 SYMATTR Value 3m SYMBOL res -384 -512 R0 SYMATTR InstName R2 SYMATTR Value 499K SYMBOL res -384 -352 R0 SYMATTR InstName R3 SYMATTR Value 56.2K SYMBOL res -16 -432 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R4 SYMATTR Value 50 SYMBOL cap -96 -432 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C3 SYMATTR Value 470n SYMBOL cap 720 -400 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C4 SYMATTR Value 4.7µ SYMBOL res -496 -272 R0 SYMATTR InstName R5 SYMATTR Value 499K SYMBOL res -496 -160 R0 SYMATTR InstName R6 SYMATTR Value 27.4K SYMBOL res 80 832 R0 SYMATTR Value 147K SYMATTR InstName R7 SYMBOL cap -288 496 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C5 SYMATTR Value .1µ SYMBOL nmos 720 -144 R0 WINDOW 0 57 27 Left 2 WINDOW 3 56 60 Left 2 SYMATTR InstName Q1 SYMATTR Value RJK0651DPB SYMBOL nmos 720 48 R0 WINDOW 0 57 30 Left 2 WINDOW 3 57 60 Left 2 SYMATTR InstName Q2 SYMATTR Value RJK0651DPB SYMBOL ind 832 48 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value 10µ SYMATTR SpiceLine Rser=20m Rpar=5K SYMBOL cap 592 -144 R0 SYMATTR InstName C6 SYMATTR Value .1µ SYMBOL schottky 592 -352 R0 SYMATTR InstName D1 SYMATTR Value BAT46WJ SYMATTR Description Diode SYMATTR Type diode SYMBOL cap 960 -96 R0 SYMATTR InstName C7 SYMATTR Value .1µ SYMBOL schottky 448 -352 R0 SYMATTR InstName D2 SYMATTR Value BAT46WJ SYMATTR Description Diode SYMATTR Type diode SYMBOL nmos 1088 -144 M0 WINDOW 0 -1 24 Right 2 WINDOW 3 2 59 Right 2 SYMATTR InstName Q3 SYMATTR Value Si4840DY SYMBOL nmos 1088 48 M0 WINDOW 0 -1 31 Right 2 WINDOW 3 0 61 Right 2 SYMATTR InstName Q4 SYMATTR Value Si4840DY SYMBOL res 752 224 R0 SYMATTR InstName R8 SYMATTR Value 4m SYMBOL res 1536 720 R0 SYMATTR InstName R9 SYMATTR Value 73.2K SYMBOL res 1536 832 R0 SYMATTR InstName R10 SYMATTR Value 3.83K SYMBOL res 1424 -144 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R11 SYMATTR Value 8m SYMBOL cap 1280 -128 R0 WINDOW 123 24 56 Left 2 WINDOW 3 36 31 Left 2 SYMATTR Value2 x2 SYMATTR Value 4.7µ SYMATTR InstName C8 SYMATTR SpiceLine V=50 Irms=0 Rser=0.005 Lser=0 SYMBOL polcap 1392 -128 R0 WINDOW 123 24 78 Left 2 SYMATTR Value 220µ SYMATTR InstName C9 SYMATTR Description Capacitor SYMATTR Type cap SYMATTR SpiceLine V=35 Irms=760m Rser=0.09 Lser=0 mfg="Panasonic" pn="ECA1VFQ221" type="Al electrolytic" SYMBOL res -464 240 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R12 SYMATTR Value 200K SYMBOL res -464 336 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R13 SYMATTR Value 100K SYMBOL res -288 720 R0 SYMATTR InstName R14 SYMATTR Value 100K SYMBOL PowerProducts\\LT3790 128 224 R0 SYMATTR InstName U1 SYMBOL cap 800 -512 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C10 SYMATTR Value 1µ SYMATTR SpiceLine V=100 Rser=.025 SYMBOL cap -640 -512 R0 SYMATTR InstName C11 SYMATTR Value 47µ SYMATTR SpiceLine V=63 Rser=.025 SYMBOL res 192 768 R0 SYMATTR InstName R15 SYMATTR Value 5.1K SYMBOL res 1600 -160 R0 SYMATTR InstName Rload SYMATTR Value 4.8 TEXT 944 944 Left 2 !.tran 2m startup TEXT -496 976 Left 2 ;Note:\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 © 2015 Linear Technology Inc. All rights reserved. TEXT 128 -584 Bottom 2 ;LT3790 - 60V Synchronous 4-Switch Buck-Boost Controller\n120W Buck-Boost Voltage Regulator\nInput: 12V to 57V Output: 24V @ 5A, Fsw = 200kHz