Version 4 SHEET 1 3180 964 WIRE 1440 -592 -816 -592 WIRE -752 -560 -768 -560 WIRE -496 -560 -752 -560 WIRE 112 -560 -496 -560 WIRE 960 -560 112 -560 WIRE -768 -528 -768 -560 WIRE 592 -528 -96 -528 WIRE -384 -496 -656 -496 WIRE -288 -496 -320 -496 WIRE -240 -496 -288 -496 WIRE -128 -496 -176 -496 WIRE -32 -496 -128 -496 WIRE 304 -496 -32 -496 WIRE 448 -496 304 -496 WIRE 496 -496 448 -496 WIRE 560 -496 496 -496 WIRE 640 -496 560 -496 WIRE 752 -496 704 -496 WIRE 800 -496 752 -496 WIRE 1136 -496 864 -496 WIRE 496 -480 496 -496 WIRE -496 -464 -496 -560 WIRE 960 -464 960 -560 WIRE -288 -448 -288 -496 WIRE 752 -448 752 -496 WIRE -768 -432 -768 -448 WIRE -96 -432 -96 -528 WIRE 16 -432 -96 -432 WIRE 208 -432 96 -432 WIRE -416 -384 -448 -384 WIRE -96 -384 -96 -432 WIRE -96 -384 -160 -384 WIRE 496 -384 496 -400 WIRE 592 -384 592 -528 WIRE 624 -384 592 -384 WIRE 912 -384 880 -384 WIRE 112 -352 112 -560 WIRE 208 -352 208 -432 WIRE 304 -352 304 -496 WIRE -816 -304 -816 -592 WIRE -768 -304 -816 -304 WIRE -656 -304 -656 -496 WIRE -656 -304 -688 -304 WIRE -496 -304 -496 -368 WIRE -496 -304 -656 -304 WIRE -416 -304 -496 -304 WIRE -128 -304 -128 -496 WIRE -128 -304 -160 -304 WIRE 560 -304 560 -496 WIRE 624 -304 560 -304 WIRE 960 -304 960 -368 WIRE 960 -304 880 -304 WIRE 1136 -304 1136 -496 WIRE 1136 -304 960 -304 WIRE 1168 -304 1136 -304 WIRE 1280 -304 1248 -304 WIRE 1328 -304 1280 -304 WIRE 1440 -304 1440 -592 WIRE 1440 -304 1328 -304 WIRE 1552 -304 1440 -304 WIRE -32 -288 -32 -496 WIRE 0 -288 -32 -288 WIRE 448 -288 448 -496 WIRE 448 -288 416 -288 WIRE 1328 -288 1328 -304 WIRE 1440 -288 1440 -304 WIRE 1552 -288 1552 -304 WIRE -416 -224 -448 -224 WIRE -128 -224 -160 -224 WIRE 624 -224 560 -224 WIRE 912 -224 880 -224 WIRE -128 -192 -128 -224 WIRE 0 -192 -128 -192 WIRE 560 -192 560 -224 WIRE 560 -192 416 -192 WIRE 1328 -192 1328 -224 WIRE 1440 -192 1440 -224 WIRE 1552 -192 1552 -208 WIRE -496 -176 -496 -208 WIRE 960 -176 960 -208 WIRE -288 -144 -288 -160 WIRE 752 -144 752 -160 WIRE -656 -96 -656 -304 WIRE -192 -96 -656 -96 WIRE -64 -96 -112 -96 WIRE 0 -96 -64 -96 WIRE 448 -96 416 -96 WIRE 528 -96 448 -96 WIRE 1136 -96 1136 -304 WIRE 1136 -96 608 -96 WIRE -64 -80 -64 -96 WIRE 448 -80 448 -96 WIRE -816 0 -816 -304 WIRE -64 0 -64 -16 WIRE -64 0 -816 0 WIRE 0 0 -64 0 WIRE 448 0 448 -16 WIRE 448 0 416 0 WIRE 1280 0 1280 -304 WIRE 1280 0 448 0 WIRE -816 96 -816 0 WIRE 0 96 -816 96 WIRE 752 96 416 96 WIRE 1280 96 1280 0 WIRE 1280 96 752 96 WIRE 0 192 -16 192 WIRE 432 192 416 192 WIRE 0 288 -16 288 WIRE 432 288 416 288 WIRE 464 288 432 288 WIRE 752 288 752 96 WIRE 464 304 464 288 WIRE -16 320 -16 288 WIRE 432 320 432 288 WIRE 432 320 -16 320 WIRE -96 384 -96 -384 WIRE 0 384 -96 384 WIRE 464 384 464 368 WIRE 464 384 416 384 WIRE 752 384 752 352 WIRE 752 384 464 384 WIRE 0 576 -16 576 WIRE 432 576 416 576 WIRE 464 576 432 576 WIRE -16 608 -16 576 WIRE 432 608 432 576 WIRE 432 608 -16 608 WIRE 464 640 464 576 WIRE -96 848 -96 384 WIRE 64 848 64 832 WIRE 64 848 -96 848 WIRE 352 848 352 832 WIRE 464 848 464 704 WIRE 464 848 352 848 WIRE 64 864 64 848 WIRE 160 864 160 832 WIRE 256 864 256 832 WIRE 352 864 352 848 WIRE 464 864 464 848 WIRE 64 944 64 928 WIRE 160 944 160 928 FLAG 1328 -192 0 FLAG 1440 -192 0 FLAG 1552 -192 0 FLAG 1552 -304 OUT FLAG 752 -144 0 FLAG 960 -176 0 FLAG 496 -384 0 FLAG -768 -432 0 FLAG -288 -144 0 FLAG -496 -176 0 FLAG -752 -560 IN FLAG 256 864 0 FLAG 352 864 0 FLAG 64 944 0 FLAG 160 944 0 FLAG 464 864 0 FLAG 432 192 0 FLAG -16 192 0 SYMBOL cap 1312 -288 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 1424 -288 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 752 -304 R0 SYMATTR InstName U2 SYMBOL ind 1152 -288 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 624 -112 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 3.09K SYMBOL cap 432 -80 R0 SYMATTR InstName C3 SYMATTR Value .22µ SYMBOL schottky 640 -512 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 800 -512 M90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C4 SYMATTR Value .22µ SYMBOL voltage 496 -496 R0 SYMATTR InstName V1 SYMATTR Value 5 SYMBOL res 1536 -304 R0 SYMATTR InstName Rload1 SYMATTR Value 82.5m SYMBOL nmos 912 -464 R0 SYMATTR InstName Q1 SYMATTR Value BSC050N04LS SYMBOL nmos 912 -304 R0 SYMATTR InstName Q2 SYMATTR Value BSC016N04LS SYMBOL voltage -768 -544 R0 SYMATTR InstName V2 SYMATTR Value 32 SYMBOL PowerProducts\\LTC4449 -288 -304 M0 SYMATTR InstName U3 SYMBOL nmos -448 -464 M0 SYMATTR InstName Q3 SYMATTR Value BSC050N04LS SYMBOL ind -672 -288 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 -208 -80 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R2 SYMATTR Value 3.09K SYMBOL cap -80 -80 R0 SYMATTR InstName C5 SYMATTR Value .22µ SYMBOL schottky -176 -512 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 -512 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C6 SYMATTR Value .22µ SYMBOL nmos -448 -304 M0 SYMATTR InstName Q4 SYMATTR Value BSC016N04LS 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 448 640 R0 SYMATTR InstName C9 SYMATTR Value 100p SYMBOL cap 736 352 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 448 304 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 112 -448 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 1688 -304 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