Version 4 SHEET 1 3180 964 WIRE 1376 -576 -848 -576 WIRE -496 -528 -784 -528 WIRE 112 -528 -496 -528 WIRE 912 -528 112 -528 WIRE -784 -512 -784 -528 WIRE 560 -496 -48 -496 WIRE -384 -464 -688 -464 WIRE -288 -464 -320 -464 WIRE -224 -464 -288 -464 WIRE -128 -464 -160 -464 WIRE -32 -464 -128 -464 WIRE 304 -464 -32 -464 WIRE 448 -464 304 -464 WIRE 496 -464 448 -464 WIRE 544 -464 496 -464 WIRE 576 -464 544 -464 WIRE 704 -464 640 -464 WIRE 752 -464 704 -464 WIRE 1072 -464 816 -464 WIRE 496 -448 496 -464 WIRE -496 -432 -496 -528 WIRE 912 -432 912 -528 WIRE -784 -416 -784 -432 WIRE -288 -416 -288 -464 WIRE 704 -416 704 -464 WIRE -48 -400 -48 -496 WIRE 0 -400 -48 -400 WIRE 208 -400 80 -400 WIRE -416 -352 -448 -352 WIRE -48 -352 -48 -400 WIRE -48 -352 -160 -352 WIRE 112 -352 112 -528 WIRE 208 -352 208 -400 WIRE 304 -352 304 -464 WIRE 496 -352 496 -368 WIRE 560 -352 560 -496 WIRE 576 -352 560 -352 WIRE 864 -352 832 -352 WIRE -32 -288 -32 -464 WIRE 0 -288 -32 -288 WIRE 448 -288 448 -464 WIRE 448 -288 416 -288 WIRE -848 -272 -848 -576 WIRE -800 -272 -848 -272 WIRE -688 -272 -688 -464 WIRE -688 -272 -720 -272 WIRE -496 -272 -496 -336 WIRE -496 -272 -688 -272 WIRE -416 -272 -496 -272 WIRE -128 -272 -128 -464 WIRE -128 -272 -160 -272 WIRE 544 -272 544 -464 WIRE 576 -272 544 -272 WIRE 912 -272 912 -336 WIRE 912 -272 832 -272 WIRE 1072 -272 1072 -464 WIRE 1072 -272 912 -272 WIRE 1104 -272 1072 -272 WIRE 1216 -272 1184 -272 WIRE 1264 -272 1216 -272 WIRE 1376 -272 1376 -576 WIRE 1376 -272 1264 -272 WIRE 1488 -272 1376 -272 WIRE 1264 -256 1264 -272 WIRE 1376 -256 1376 -272 WIRE 1488 -256 1488 -272 WIRE -416 -192 -448 -192 WIRE 0 -192 -160 -192 WIRE 576 -192 416 -192 WIRE 864 -192 832 -192 WIRE 1264 -160 1264 -192 WIRE 1376 -160 1376 -192 WIRE 1488 -160 1488 -176 WIRE -496 -144 -496 -176 WIRE 912 -144 912 -176 WIRE -288 -112 -288 -128 WIRE 704 -112 704 -128 WIRE -688 -96 -688 -272 WIRE -656 -96 -688 -96 WIRE -96 -96 -576 -96 WIRE 0 -96 -96 -96 WIRE 480 -96 416 -96 WIRE 912 -96 480 -96 WIRE 1072 -96 1072 -272 WIRE 1072 -96 992 -96 WIRE -96 -80 -96 -96 WIRE 480 -80 480 -96 WIRE -848 0 -848 -272 WIRE -96 0 -96 -16 WIRE -96 0 -848 0 WIRE 0 0 -96 0 WIRE 480 0 480 -16 WIRE 480 0 416 0 WIRE 1216 0 1216 -272 WIRE 1216 0 480 0 WIRE -848 96 -848 0 WIRE 0 96 -848 96 WIRE 704 96 416 96 WIRE 1216 96 1216 0 WIRE 1216 96 704 96 WIRE 0 192 -16 192 WIRE 432 192 416 192 WIRE 0 288 -16 288 WIRE 432 288 416 288 WIRE 448 288 432 288 WIRE 704 288 704 96 WIRE -16 304 -16 288 WIRE 432 304 432 288 WIRE 432 304 -16 304 WIRE 448 304 448 288 WIRE -48 384 -48 -352 WIRE 0 384 -48 384 WIRE 448 384 448 368 WIRE 448 384 416 384 WIRE 704 384 704 352 WIRE 704 384 448 384 WIRE 432 560 -16 560 WIRE -16 576 -16 560 WIRE 0 576 -16 576 WIRE 432 576 432 560 WIRE 432 576 416 576 WIRE 480 576 432 576 WIRE 480 640 480 576 WIRE -48 848 -48 384 WIRE 64 848 64 832 WIRE 64 848 -48 848 WIRE 256 848 256 832 WIRE 352 848 352 832 WIRE 480 848 480 704 WIRE 480 848 352 848 WIRE 64 864 64 848 WIRE 160 864 160 832 WIRE 352 864 352 848 WIRE 480 864 480 848 WIRE 64 944 64 928 WIRE 160 944 160 928 FLAG 1264 -160 0 FLAG 1376 -160 0 FLAG 1488 -160 0 FLAG 1488 -272 OUT FLAG 704 -112 0 FLAG 912 -144 0 FLAG 496 -352 0 FLAG -784 -416 0 FLAG -288 -112 0 FLAG -496 -144 0 FLAG -784 -528 IN FLAG 256 848 0 FLAG 352 864 0 FLAG 64 944 0 FLAG 160 944 0 FLAG 480 864 0 FLAG 432 192 0 FLAG -16 192 0 SYMBOL cap 1248 -256 R0 WINDOW 123 26 65 Left 2 WINDOW 3 41 36 Left 2 SYMATTR Value2 X4 SYMATTR Value 470µ SYMATTR InstName C1 SYMATTR SpiceLine Rser=25m SYMBOL cap 1360 -256 R0 WINDOW 123 21 69 Left 2 WINDOW 3 44 37 Left 2 SYMATTR Value2 X2 SYMATTR Value 100µ SYMATTR InstName C2 SYMATTR SpiceLine Rser=3m SYMBOL PowerProducts\\LTC4449 704 -272 R0 SYMATTR InstName U2 SYMBOL ind 1088 -256 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value .2µ SYMATTR SpiceLine Rser=.3m Rpar=5K SYMBOL res 1008 -112 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 3.09K SYMBOL cap 464 -80 R0 SYMATTR InstName C3 SYMATTR Value .22µ SYMBOL schottky 576 -480 M90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName D1 SYMATTR Value 1N5818 SYMATTR Description Diode SYMATTR Type diode SYMBOL cap 752 -480 M90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C4 SYMATTR Value .22µ SYMBOL voltage 496 -464 R0 SYMATTR InstName V1 SYMATTR Value 5 SYMBOL res 1472 -272 R0 SYMATTR InstName Rload1 SYMATTR Value 82.5m SYMBOL nmos 864 -432 R0 SYMATTR InstName Q1 SYMATTR Value BSC050N04LS SYMBOL nmos 864 -272 R0 SYMATTR InstName Q2 SYMATTR Value BSC017N04NS SYMBOL voltage -784 -528 R0 SYMATTR InstName V2 SYMATTR Value 32 SYMBOL PowerProducts\\LTC4449 -288 -272 M0 SYMATTR InstName U3 SYMBOL nmos -448 -432 M0 SYMATTR InstName Q3 SYMATTR Value BSC050N04LS SYMBOL ind -704 -256 M270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L2 SYMATTR Value .2µ SYMATTR SpiceLine Rser=.3m Rpar=5K SYMBOL res -672 -112 M90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 3.09K SYMBOL cap -80 -80 M0 SYMATTR InstName C5 SYMATTR Value .22µ SYMBOL schottky -160 -480 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName D2 SYMATTR Value 1N5818 SYMATTR Description Diode SYMATTR Type diode SYMBOL cap -320 -480 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C6 SYMATTR Value .22µ SYMBOL nmos -448 -272 M0 SYMATTR InstName Q4 SYMATTR Value BSC017N04NS SYMBOL cap 48 864 R0 SYMATTR InstName C7 SYMATTR Value 2.2µ SYMBOL cap 144 864 R0 SYMATTR InstName C8 SYMATTR Value 1µ SYMBOL cap 464 640 R0 SYMATTR InstName C9 SYMATTR Value 100p SYMBOL cap 688 352 M180 WINDOW 39 29 7 Left 2 WINDOW 3 42 35 Left 2 WINDOW 0 22 59 Left 2 SYMATTR SpiceLine Rser=1.07K SYMATTR Value 200p SYMATTR InstName C10 SYMBOL cap 432 304 R0 WINDOW 39 24 63 Left 2 WINDOW 3 35 34 Left 2 SYMATTR SpiceLine Rser=100K Cpar=11p SYMATTR Value 270p SYMATTR InstName C11 SYMBOL res 96 -416 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R3 SYMATTR Value 2K SYMBOL PowerProducts\\LTC3882-1 208 240 R0 SYMATTR InstName U1 TEXT 1640 -376 Left 2 ;Please read the following notes carefully, since the model presents different user interface\nthan the real part does.\n \n(1) All PMBus communication and memory address related functions and pins are not modeled. \n \n(2) Changes to all parameter values during the simulation running will not be in effect, unless the\nsimulation is stopped and restarted. This is different from the operation of the part, which will\n respond to the commanded changes while running. \n \n(3) Share_clk is not modeled. The default time reference of LTspice is used as the common time \nbase for all time related parameters.\n \n(4) The following parameters can be defined, by right-clicking the symbol of LTC3882. Different \nnomenclature from the datasheet is adopted here. If any value of these parameters are set beyond \nthe scope discribed in the datasheet, the resulting simulation outcomes are not meaningful.\n \n Freq -- in Hz, sets switching frequency as one of values of 250K, 300K, 350K, \n 400K, 450K, 500K, 600K, 750K, 900K, 1000K, 1250K. FREQ_CFG pin needs to float \n (or short to VDD25), to make the value be in effect;\n PHAS_0 & PHAS_1 -- in degree, set phase angle related to SYNC signal. \n Certain combinations are restricted as in datasheet. PHAS_CFG \n pin needs to float (or short to VDD25), to make the value be in effect;\n Ton0_delay & Ton0_rise; Ton1_delay & Ton1_rise -- in sec, set delay and soft-start timers for \n channel0 and channel1. Initialization time is not modeled;\n Toff0_delay & Toff0_fall; Toff1_delay & Toff1_fall -- in sec, set delay and soft-off timers for \n channel0 and channel1;\n Vout_0 & Vout_1 -- in volt, set output voltages respectively. Vout#_CFG pin needs to float \n (or short to VDD25), to make the value be in effect;\n Vout0_range & Vout1_range -- set maximum output range, with value 0\n for 5.5V; value 1 for 2.75V;\n Iout0_fault & Iout1_fault -- in Amper, set maximum inductor peak current value, OC will be triggered \n when the value is exceeded;\n Iout0_warn & Iout1_warn -- in aMper, set the average load current maximum value, which will be used \n with Vout#_AVP to define the AVP operation;\n Iout0_gain & Iout1_gain -- in Ohm, set sensing resistor or inductor DCR values used in the circuit;\n Vout0_AVP & Vout1_AVP -- set the maximum value reference will reduce at Iout#_warn level: TEXT 512 896 Left 2 !.tran 1m startup