Version 4 SHEET 1 2972 1188 WIRE 32 -288 -448 -288 WIRE 512 -288 448 -288 WIRE -448 -272 -448 -288 WIRE 512 -272 512 -288 WIRE -16 -192 -272 -192 WIRE 32 -192 -16 -192 WIRE 480 -192 448 -192 WIRE 512 -192 512 -208 WIRE 512 -192 480 -192 WIRE 576 -192 512 -192 WIRE 704 -192 656 -192 WIRE 752 -192 704 -192 WIRE 848 -192 752 -192 WIRE 912 -192 848 -192 WIRE -448 -176 -448 -192 WIRE -272 -176 -272 -192 WIRE 752 -176 752 -192 WIRE 848 -176 848 -192 WIRE -144 -96 -160 -96 WIRE -16 -96 -80 -96 WIRE 32 -96 -16 -96 WIRE 512 -96 448 -96 WIRE 512 -80 512 -96 WIRE 752 -80 752 -112 WIRE 848 -80 848 -112 WIRE -272 -64 -272 -96 WIRE -144 0 -160 0 WIRE -32 0 -80 0 WIRE 32 0 -32 0 WIRE 480 0 448 0 WIRE 512 0 512 -16 WIRE 512 0 480 0 WIRE 576 0 512 0 WIRE 704 0 704 -192 WIRE 704 0 656 0 WIRE -256 96 -288 96 WIRE -32 96 -176 96 WIRE 32 96 -32 96 WIRE 912 96 912 -192 WIRE 912 96 448 96 WIRE 912 112 912 96 WIRE -144 192 -160 192 WIRE -32 192 -80 192 WIRE 32 192 -32 192 WIRE 912 192 448 192 WIRE 912 224 912 192 WIRE 32 288 16 288 WIRE 528 288 448 288 WIRE 608 288 528 288 WIRE 784 288 688 288 WIRE -240 384 -352 384 WIRE -96 384 -176 384 WIRE -32 384 -96 384 WIRE 32 384 -32 384 WIRE 528 384 448 384 WIRE 608 384 528 384 WIRE 768 384 688 384 WIRE 784 384 784 288 WIRE 784 384 768 384 WIRE -32 400 -32 384 WIRE -352 432 -352 384 WIRE 160 480 160 464 WIRE 320 480 320 464 WIRE -352 560 -352 512 FLAG 320 480 0 FLAG 160 480 0 FLAG -160 0 0 FLAG -448 -288 IN FLAG -448 -176 0 FLAG 848 -80 0 FLAG 912 -192 OUT FLAG 752 -80 0 FLAG -16 -192 RUN FLAG 512 -288 BOOST0 FLAG 480 -192 SW0 FLAG 480 0 SW1 FLAG 512 -96 BOOST1 FLAG -352 560 0 FLAG -352 384 CLK_EXT FLAG -96 384 SYNC/PWM_CFG FLAG -32 480 0 FLAG 768 384 EXTVCC FLAG 528 384 _ALERT FLAG -32 0 DRVCC FLAG -32 192 INTVCC FLAG -32 96 EXTVCC FLAG 528 288 PGOOD FLAG -160 -96 0 FLAG -16 -96 VDD18 FLAG -160 192 0 FLAG -272 -64 0 FLAG -288 96 0 FLAG 912 224 0 FLAG 16 288 0 SYMBOL voltage -448 -288 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V1 SYMATTR Value 12 SYMBOL cap -144 -16 M90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C6 SYMATTR Value 10µ SYMBOL ind 560 -176 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L0 SYMATTR Value 470n SYMATTR SpiceLine Rser=2.5m SYMBOL cap 832 -176 R0 WINDOW 123 24 77 Left 2 SYMATTR Value2 x2 SYMATTR InstName C2 SYMATTR Value 100µ SYMATTR SpiceLine Rser=5m SYMBOL cap 736 -176 R0 WINDOW 123 24 77 Left 2 SYMATTR Value2 x2 SYMATTR InstName C1 SYMATTR Value 100µ SYMATTR SpiceLine Rser=2m SYMBOL cap 496 -80 R0 SYMATTR InstName C4 SYMATTR Value 0.1µ SYMBOL cap 496 -272 R0 SYMATTR InstName C3 SYMATTR Value 0.1µ SYMBOL voltage -352 416 M0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V3 SYMATTR Value PULSE(0 5 1.8m 1n 1n 500n 1u 500) SYMBOL cap -240 368 M90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C8 SYMATTR Value 1.5n SYMBOL res -16 384 M0 SYMATTR InstName R2 SYMATTR Value 162k SYMBOL res 704 368 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R3 SYMATTR Value 100k SYMBOL res 704 272 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 100k SYMBOL cap -144 -112 M90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C5 SYMATTR Value 4.7µ SYMBOL cap -144 176 M90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C7 SYMATTR Value 10µ SYMBOL voltage -272 -192 M0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V2 SYMATTR Value PWL(500u 0 500.001u 5 2500u 5 2500.001u 0) SYMBOL ind 560 16 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value 470n SYMATTR SpiceLine Rser=2.5m SYMBOL voltage -160 96 M270 WINDOW 123 -74 56 VBottom 2 WINDOW 39 -53 56 VBottom 2 WINDOW 0 32 56 VTop 2 WINDOW 3 -32 56 VBottom 2 SYMATTR InstName V4 SYMATTR Value 5 SYMBOL current 912 112 M0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 WINDOW 3 31 67 Left 2 SYMATTR Value PULSE(0 8 1.2m 100n 100n 300u) SYMATTR InstName I1 SYMBOL LT7170-1 240 0 R0 SYMATTR InstName U1 TEXT 704 472 Left 2 !.tran 3.5m startup TEXT 976 -336 Left 2 ;The following parameters can be defined by right-clicking on the LT7170-1_verify symbol.\n \nFrequency_switch -- in Hz, sets switching frequency\n \nVout_range -- sets maximum output range, 0 for 1.375V, 1 for 2.75V, 2 for 5.5V\n \nVout_command -- in volt, sets output voltage\n \nTon_delay & Ton_rise -- in sec, set ON delay and soft-start time\nToff_delay & Toff_fall -- in sec, set OFF delay and soft-off time \n \nIlim_range -- sets current limit options:\n 0 positive valley current limit of 6A per phase, negative valley current limit of -3.5A\n 1 positive valley current limit of 8A per phase, negative valley current limit of -5A\n 2 positive valley current limit of 10.5A per phase, negative valley current limit of -6A\n 3 positive valley current limit of 13A per phase, negative valley current limit of -7.5A \n \nPulseSkipMode--sets operation mode: 1 for Pulse Skip Mode, 0 for Forced Continuous conduction Mode (FCM)\n \nFCM_DURING_TOFF_FALL-- if set to 1, FCM during soft-off ramp-down, regardless of PulseSkipMode setting\n \nGMEA_control--Sets Error Amp parameters, N=0 to 31\n GmEA = 0.15mS*(n+1)/(2^VOUT_RANGE) (relative to VSENSE inputs)\n ImaxOutEA = 8.5uA*(n+1) \n \nRITH--in ohm, programmable internal compensation\n \nCITH--in Farad, programmable internal compensation\n \nMFR_PWM_PHASE-- in degree, sets the master phase delay in 15-degree increments with respect to the SYNC frequency if present.\n \nOutput_discharge--0 for disabled, 1 for enabled \n \nVout_UV_Fault_Limit and Vout_OV_Fault_Limit --- in volt, set the undervoltage and overvoltage fault limit for the Pgood output\nVout_UV_Warn_Limit and Vout_OV_Warn_Limit-- in volt, set the undervoltage and overvoltage warning limit for the Alert output\n \nDISABLE_SW1--sets to 1 to disable phase 1, sets to 0 to enable phase 1