Version 4 SHEET 1 2732 1188 WIRE 160 -512 160 -528 WIRE 160 -432 160 -448 WIRE 160 -432 -144 -432 WIRE 448 -432 160 -432 WIRE -240 -416 -480 -416 WIRE 64 -416 -240 -416 WIRE 624 -416 64 -416 WIRE -480 -400 -480 -416 WIRE -144 -400 -144 -432 WIRE 448 -400 448 -432 WIRE -240 -384 -240 -416 WIRE 624 -384 624 -416 WIRE 64 -368 64 -416 WIRE 160 -368 160 -432 WIRE 256 -368 256 -384 WIRE 352 -368 352 -384 WIRE -480 -304 -480 -320 WIRE 0 -304 -192 -304 WIRE 576 -304 416 -304 WIRE -240 -208 -240 -288 WIRE -224 -208 -240 -208 WIRE -144 -208 -144 -336 WIRE -144 -208 -160 -208 WIRE 0 -208 -144 -208 WIRE 448 -208 448 -336 WIRE 448 -208 416 -208 WIRE 464 -208 448 -208 WIRE 624 -208 624 -288 WIRE 624 -208 528 -208 WIRE -528 -112 -624 -112 WIRE -432 -112 -528 -112 WIRE -416 -112 -432 -112 WIRE -304 -112 -336 -112 WIRE -240 -112 -240 -208 WIRE -240 -112 -304 -112 WIRE 0 -112 -240 -112 WIRE 624 -112 624 -208 WIRE 624 -112 416 -112 WIRE 704 -112 624 -112 WIRE 736 -112 704 -112 WIRE 832 -112 816 -112 WIRE 896 -112 832 -112 WIRE 1008 -112 896 -112 WIRE -624 -96 -624 -112 WIRE -528 -96 -528 -112 WIRE -240 -96 -240 -112 WIRE 624 -96 624 -112 WIRE 896 -96 896 -112 WIRE 1008 -96 1008 -112 WIRE 0 -16 -192 -16 WIRE 576 -16 416 -16 WIRE -624 0 -624 -16 WIRE -528 0 -528 -32 WIRE 896 0 896 -32 WIRE 1008 0 1008 -16 WIRE -240 16 -240 0 WIRE 624 16 624 0 WIRE -304 80 -304 -112 WIRE -256 80 -304 80 WIRE -160 80 -176 80 WIRE 0 80 -160 80 WIRE 448 80 416 80 WIRE 560 80 448 80 WIRE 704 80 704 -112 WIRE 704 80 640 80 WIRE -160 96 -160 80 WIRE 448 96 448 80 WIRE -432 176 -432 -112 WIRE -160 176 -160 160 WIRE -160 176 -432 176 WIRE 0 176 -160 176 WIRE 448 176 448 160 WIRE 448 176 416 176 WIRE 832 176 832 -112 WIRE 832 176 448 176 WIRE -432 272 -432 176 WIRE 0 272 -432 272 WIRE 832 272 832 176 WIRE 832 272 416 272 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 256 -384 0 FLAG 352 -384 0 FLAG 160 -528 0 FLAG -240 16 0 FLAG -128 464 0 FLAG -528 0 0 FLAG -624 0 0 FLAG -624 -112 OUT1 FLAG -480 -416 IN FLAG -480 -304 0 FLAG -304 496 0 FLAG 720 496 0 FLAG 544 464 0 FLAG 624 16 0 FLAG 896 0 0 FLAG 1008 0 0 FLAG 1008 -112 OUT0 FLAG 448 368 0 FLAG -304 832 0 FLAG 64 784 0 SYMBOL voltage -480 -416 R0 SYMATTR InstName V1 SYMATTR Value 12 SYMBOL cap 144 -512 R0 SYMATTR InstName C1 SYMATTR Value 1µ SYMBOL nmos -192 -384 M0 SYMATTR InstName Q1 SYMATTR Value RJK0305DPB SYMBOL nmos -192 -96 M0 WINDOW 0 0 2 Right 2 WINDOW 3 25 107 Right 2 SYMATTR InstName Q2 SYMATTR Value RJK0301DPB SYMBOL ind 720 -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 -160 -224 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C2 SYMATTR Value .1µ SYMBOL schottky -160 -400 R0 SYMATTR Value CMDSH2-3 SYMATTR InstName D1 SYMATTR Description Diode SYMATTR Type diode SYMBOL cap 432 96 R0 SYMATTR InstName C3 SYMATTR Value .22µ SYMBOL res 656 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 -544 -96 R0 SYMATTR InstName C5 SYMATTR Value 530µ SYMATTR SpiceLine Rser=5m SYMBOL res -640 -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 576 -384 R0 SYMATTR InstName Q3 SYMATTR Value RJK0305DPB SYMBOL nmos 576 -96 R0 WINDOW 0 -3 20 Right 2 WINDOW 3 28 103 Right 2 SYMATTR InstName Q4 SYMATTR Value RJK0301DPB SYMBOL ind -320 -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 464 -224 M90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C7 SYMATTR Value .1µ SYMBOL schottky 432 -400 R0 SYMATTR Value CMDSH2-3 SYMATTR InstName D2 SYMATTR Description Diode SYMATTR Type diode SYMBOL cap -176 96 R0 SYMATTR InstName C8 SYMATTR Value .22µ SYMBOL res -272 96 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R11 SYMATTR Value 2K SYMBOL cap 880 -96 R0 SYMATTR InstName C9 SYMATTR Value 530µ SYMATTR SpiceLine Rser=5m SYMBOL res 992 -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 208 176 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 TEXT 784 384 Left 2 !.tran 1.2m startup TEXT 1112 -424 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 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;