Version 4 SHEET 1 2732 1188 WIRE -592 -384 -704 -384 WIRE 64 -384 -592 -384 WIRE 976 -384 64 -384 WIRE -704 -368 -704 -384 WIRE -224 -336 -416 -336 WIRE -144 -336 -224 -336 WIRE -48 -336 -80 -336 WIRE 496 -336 464 -336 WIRE 640 -336 560 -336 WIRE 832 -336 640 -336 WIRE 208 -304 208 -320 WIRE -416 -288 -416 -336 WIRE 832 -288 832 -336 WIRE -704 -272 -704 -288 WIRE -592 -256 -592 -384 WIRE 976 -256 976 -384 WIRE -224 -240 -224 -336 WIRE 640 -240 640 -336 WIRE -48 -224 -48 -336 WIRE 208 -224 208 -240 WIRE 208 -224 -48 -224 WIRE 464 -224 464 -336 WIRE 464 -224 208 -224 WIRE -352 -176 -544 -176 WIRE -48 -176 -48 -224 WIRE -48 -176 -96 -176 WIRE 64 -176 64 -384 WIRE 208 -176 208 -224 WIRE 352 -176 352 -192 WIRE 464 -176 464 -224 WIRE 512 -176 464 -176 WIRE 928 -176 768 -176 WIRE -880 -112 -976 -112 WIRE -784 -112 -880 -112 WIRE -768 -112 -784 -112 WIRE -656 -112 -688 -112 WIRE -592 -112 -592 -160 WIRE -592 -112 -656 -112 WIRE -416 -112 -416 -224 WIRE -416 -112 -592 -112 WIRE -48 -112 -48 -176 WIRE 0 -112 -48 -112 WIRE 464 -112 464 -176 WIRE 464 -112 416 -112 WIRE 832 -112 832 -224 WIRE 976 -112 976 -160 WIRE 976 -112 832 -112 WIRE 1056 -112 976 -112 WIRE 1088 -112 1056 -112 WIRE 1184 -112 1168 -112 WIRE 1248 -112 1184 -112 WIRE 1360 -112 1248 -112 WIRE -976 -96 -976 -112 WIRE -880 -96 -880 -112 WIRE -592 -96 -592 -112 WIRE -416 -96 -416 -112 WIRE -352 -96 -416 -96 WIRE -48 -96 -48 -112 WIRE -48 -96 -96 -96 WIRE 464 -96 464 -112 WIRE 512 -96 464 -96 WIRE 832 -96 832 -112 WIRE 832 -96 768 -96 WIRE 976 -96 976 -112 WIRE 1248 -96 1248 -112 WIRE 1360 -96 1360 -112 WIRE -352 -16 -544 -16 WIRE 0 -16 -96 -16 WIRE 512 -16 416 -16 WIRE 928 -16 768 -16 WIRE -976 0 -976 -16 WIRE -880 0 -880 -32 WIRE 1248 0 1248 -32 WIRE 1360 0 1360 -16 WIRE -592 16 -592 0 WIRE 976 16 976 0 WIRE -224 64 -224 48 WIRE 640 64 640 48 WIRE -656 80 -656 -112 WIRE -608 80 -656 80 WIRE -512 80 -528 80 WIRE 0 80 -512 80 WIRE 800 80 416 80 WIRE 912 80 800 80 WIRE 1056 80 1056 -112 WIRE 1056 80 992 80 WIRE -512 96 -512 80 WIRE 800 96 800 80 WIRE -784 176 -784 -112 WIRE -512 176 -512 160 WIRE -512 176 -784 176 WIRE 0 176 -512 176 WIRE 800 176 800 160 WIRE 800 176 416 176 WIRE 1184 176 1184 -112 WIRE 1184 176 800 176 WIRE -784 272 -784 176 WIRE 0 272 -784 272 WIRE 1184 272 1184 176 WIRE 1184 272 416 272 WIRE 448 368 416 368 WIRE -112 464 -128 464 WIRE 0 464 -48 464 WIRE 464 464 416 464 WIRE 544 464 528 464 WIRE -304 512 -304 496 WIRE 720 512 720 496 WIRE 0 560 -96 560 WIRE -304 608 -304 592 WIRE -96 608 -96 560 WIRE -96 608 -304 608 WIRE 720 608 720 592 WIRE 816 608 720 608 WIRE -304 624 -304 608 WIRE 720 624 720 608 WIRE -96 656 -128 656 WIRE 0 656 -16 656 WIRE 432 656 416 656 WIRE 528 656 512 656 WIRE -304 736 -304 704 WIRE 64 736 64 720 WIRE 64 736 -304 736 WIRE 720 736 720 704 WIRE 720 736 64 736 WIRE -304 752 -304 736 WIRE 256 752 256 720 WIRE 352 752 352 720 WIRE 816 752 816 608 WIRE 816 752 352 752 WIRE 80 784 64 784 WIRE 160 784 160 720 WIRE 160 784 144 784 WIRE -304 832 -304 816 WIRE -128 848 -128 656 WIRE 160 848 160 784 WIRE 160 848 -128 848 WIRE 256 848 256 832 WIRE 256 848 160 848 WIRE 528 848 528 656 WIRE 528 848 256 848 FLAG 352 -192 0 FLAG -592 16 0 FLAG -128 464 0 FLAG -880 0 0 FLAG -976 0 0 FLAG -976 -112 OUT1 FLAG -704 -384 IN FLAG -704 -272 0 FLAG -304 496 0 FLAG 720 496 0 FLAG 544 464 0 FLAG 976 16 0 FLAG 1248 0 0 FLAG 1360 0 0 FLAG 1360 -112 OUT0 FLAG 448 368 0 FLAG -304 832 0 FLAG 64 784 0 FLAG 208 -320 0 FLAG -224 64 0 FLAG 640 64 0 SYMBOL voltage -704 -384 R0 SYMATTR InstName V1 SYMATTR Value 12 SYMBOL nmos -544 -256 M0 WINDOW 0 -24 6 Left 2 WINDOW 3 -119 101 Left 2 SYMATTR InstName Q1 SYMATTR Value RJK0305DPB SYMBOL nmos -544 -96 M0 WINDOW 0 2 6 Right 2 WINDOW 3 25 107 Right 2 SYMATTR InstName Q2 SYMATTR Value RJK0301DPB SYMBOL ind 1072 -96 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value .56µ SYMATTR SpiceLine Rser=1.61m SYMBOL cap 784 96 R0 SYMATTR InstName C3 SYMATTR Value .22µ SYMBOL res 1008 96 M270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R1 SYMATTR Value 1.58K SYMBOL cap -48 448 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 WINDOW 39 54 90 VTop 2 SYMATTR InstName C4 SYMATTR Value 2200p SYMATTR SpiceLine Rser=6.04K Cpar=220p SYMBOL cap -896 -96 R0 SYMATTR InstName C5 SYMATTR Value 530µ SYMATTR SpiceLine Rser=5m SYMBOL res -992 -112 R0 SYMATTR InstName R2 SYMATTR Value .165 SYMBOL res -320 608 R0 SYMATTR InstName R3 SYMATTR Value 10K SYMBOL res -320 496 R0 SYMATTR InstName R4 SYMATTR Value 15.8k SYMBOL res -112 672 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R5 SYMATTR Value 10K SYMBOL res 240 736 R0 SYMATTR InstName R6 SYMATTR Value 4.99K SYMBOL res 704 608 R0 SYMATTR InstName R9 SYMATTR Value 30.1K SYMBOL res 704 496 R0 SYMATTR InstName R10 SYMATTR Value 3.57K SYMBOL cap 464 448 M90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 WINDOW 39 54 90 VTop 2 SYMATTR InstName C6 SYMATTR Value 4700p SYMATTR SpiceLine Rser=4.99K Cpar=220p SYMBOL nmos 928 -256 R0 SYMATTR InstName Q3 SYMATTR Value RJK0305DPB SYMBOL nmos 928 -96 R0 WINDOW 0 88 8 Right 2 WINDOW 3 199 91 Right 2 SYMATTR InstName Q4 SYMATTR Value RJK0301DPB SYMBOL ind -672 -96 M270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L2 SYMATTR Value 1µ SYMATTR SpiceLine Rser=2.3m SYMBOL cap 816 -288 R0 SYMATTR InstName C7 SYMATTR Value .1µ SYMBOL schottky 496 -320 R270 WINDOW 3 -4 37 VBottom 2 WINDOW 0 32 32 VTop 2 SYMATTR Value CMDSH2-3 SYMATTR InstName D2 SYMATTR Description Diode SYMATTR Type diode SYMBOL cap -528 96 R0 SYMATTR InstName C8 SYMATTR Value .22µ SYMBOL res -624 96 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R11 SYMATTR Value 2K SYMBOL cap 1232 -96 R0 SYMATTR InstName C9 SYMATTR Value 530µ SYMATTR SpiceLine Rser=5m SYMBOL res 1344 -112 R0 SYMATTR InstName R12 SYMATTR Value .025 SYMBOL res 528 672 M270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R13 SYMATTR Value 10K SYMBOL cap -320 752 R0 SYMATTR InstName C10 SYMATTR Value 1µ SYMBOL cap 144 768 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C11 SYMATTR Value 1µ SYMBOL PowerProducts\\LTC3887-1 208 272 R0 SYMATTR InstName U1 SYMATTR SpiceLine VIN_ON=5.5 VIN_OFF=5 Vout_0=0.5 Vout_1=2.5 Ilim0_range=1 Ilim1_range=1 OC_limit0=1 OC_limit1=1 Mode_ll=2 Fault_response=0 Retry_delay=.1m SYMBOL cap 192 -304 R0 SYMATTR InstName C12 SYMATTR Value 1µ SYMBOL PowerProducts\\LTC4449 640 -96 R0 SYMATTR InstName U2 SYMBOL cap -432 -288 R0 SYMATTR InstName C1 SYMATTR Value .1µ SYMBOL schottky -80 -320 M270 WINDOW 3 -4 37 VBottom 2 WINDOW 0 32 32 VTop 2 SYMATTR Value CMDSH2-3 SYMATTR InstName D1 SYMATTR Description Diode SYMATTR Type diode SYMBOL PowerProducts\\LTC4449 -224 -96 M0 SYMATTR InstName U3 TEXT 584 848 Left 2 !.tran 1.1m startup TEXT 1472 -344 Left 2 ;Please read the following notes carefully, since the model presents different user interface\nthan the real part.\n \n(1) All PMBus communication and memory address related functions and pins are not modeled. \n \n(2) Changes to parameter values during simulation run will not have any 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 LTC3887. 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 VIN_ON & VIN_OFF -- in volts, set the unit start/stop input voltages;\n Freq -- in Hz, sets switching frequency as one of values of 250K, 350K, \n 425K, 500K, 575K, 650K, 750K, 1000K. FREQ_CFG pin needs to float \n (or short to VDD25), to make the value be in effect;\n PHs_0 & PHs_1 -- in degree, set phase angle related to SYNC signal. \n Certain combinations are restricted as in datasheet. FREQ_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;\n Vout0_range & Vout1_range -- set maximum output range, with value 0\n 5.5V; value 1 for 2.75V\n Ilim0_range & Ilim1_range -- set maximum sensed peak current range, with value 0\n for low 50mV, and 1 for high 75mV;\n OC_limit0 & OC_limit1 -- set ratio of peak current limit to the maximum value defined\n by Ilimit_range. It must be one of values: 0.5, 0.572, 0.642, \n 0.714, 0.786, 0.858, 0.928, 1;\n Mode_II -- sets light load operation mode: 0 for discontinuous, 2 for forced continuous;\n Fault_response -- sets the response mode of the unit to occuring faults:\n 0 for ignore, 1 for latch up, 2 for Hiccup after Retry_delay time;\n Retry_delay -- in sec, sets the timer before the unit turns on after a fault;