Version 4
SHEET 1 880 868
WIRE -1648 -672 -1648 -720
WIRE -1552 -672 -1600 -672
WIRE -1552 -656 -1552 -672
WIRE -1648 -640 -1648 -672
WIRE -1600 -640 -1600 -672
WIRE -1984 -592 -2064 -592
WIRE -1664 -592 -1984 -592
WIRE -1344 -592 -1584 -592
WIRE -1296 -592 -1344 -592
WIRE -1136 -592 -1216 -592
WIRE -1056 -592 -1136 -592
WIRE -960 -592 -976 -592
WIRE -784 -592 -960 -592
WIRE -656 -592 -784 -592
WIRE -624 -592 -656 -592
WIRE -1344 -496 -1344 -592
WIRE -960 -496 -960 -592
WIRE -784 -496 -784 -592
WIRE -624 -480 -624 -592
WIRE -2064 -464 -2064 -592
WIRE -2064 -288 -2064 -384
WIRE -1344 -288 -1344 -432
WIRE -1344 -288 -2064 -288
WIRE -960 -288 -960 -432
WIRE -960 -288 -1344 -288
WIRE -784 -288 -784 -416
WIRE -784 -288 -960 -288
WIRE -624 -288 -624 -416
WIRE -624 -288 -784 -288
WIRE -1344 -256 -1344 -288
WIRE -1456 -160 -1456 -192
WIRE -1280 -112 -1328 -112
WIRE -1152 -112 -1200 -112
WIRE -1136 -112 -1152 -112
WIRE -1584 -32 -1616 -32
WIRE -1616 -16 -1616 -32
WIRE -1280 48 -1328 48
WIRE -1152 48 -1200 48
WIRE -1136 48 -1152 48
WIRE -1456 144 -1456 96
WIRE -1440 144 -1456 144
WIRE -1312 144 -1360 144
WIRE -1456 240 -1456 144
WIRE -1424 240 -1456 240
WIRE -1328 240 -1360 240
WIRE -1504 272 -1616 272
WIRE -1504 304 -1504 272
WIRE -1456 304 -1456 240
WIRE -1616 352 -1616 272
WIRE -528 416 -528 336
WIRE -528 416 -672 416
WIRE -672 448 -672 416
WIRE -1120 464 -1216 464
WIRE -896 464 -1056 464
WIRE -1216 544 -1216 464
WIRE -1168 544 -1216 544
WIRE -1056 544 -1104 544
WIRE -896 544 -896 464
WIRE -896 544 -976 544
WIRE -672 560 -672 528
WIRE -528 560 -528 416
WIRE -1648 624 -1680 624
WIRE -1504 624 -1504 608
WIRE -1648 640 -1648 624
WIRE -1504 640 -1504 624
WIRE -1456 640 -1456 400
WIRE -1680 672 -1680 624
WIRE -896 672 -896 544
WIRE -896 672 -976 672
WIRE -672 672 -672 624
WIRE -672 672 -896 672
WIRE -528 672 -528 640
WIRE -528 672 -672 672
WIRE -1520 688 -1648 688
WIRE -1216 688 -1216 544
WIRE -1216 688 -1440 688
WIRE -1040 688 -1216 688
WIRE -1712 704 -1808 704
WIRE -896 704 -976 704
WIRE -1808 720 -1808 704
WIRE -1616 720 -1616 416
WIRE -1616 720 -1648 720
WIRE -1968 736 -1968 688
WIRE -896 752 -896 704
WIRE -1616 768 -1616 720
WIRE -1808 832 -1808 800
FLAG -1344 -256 0
FLAG -1984 -592 Vin
FLAG -656 -592 Vout
FLAG -1552 -656 0
FLAG -1616 848 0
FLAG -1808 832 0
FLAG -1648 640 0
FLAG -1968 816 0
FLAG -1968 688 5V
FLAG -1680 736 5V
FLAG -1808 704 PWM
FLAG -1648 -672 PWM
FLAG -1136 -592 Sense+
FLAG -1616 -16 0
FLAG -1456 -192 5V
FLAG -1152 -112 Sense+
FLAG -1152 48 Vout
FLAG -1504 624 5V
FLAG -1312 144 0
FLAG -1328 240 0
FLAG -896 832 0
FLAG -528 752 0
FLAG -528 336 Vout
FLAG -1008 720 0
FLAG -1008 656 5V
SYMBOL voltage -2064 -480 R0
WINDOW 123 0 0 Left 2
WINDOW 39 24 124 Left 2
SYMATTR InstName Vin1
SYMATTR Value 12
SYMBOL ind -1312 -576 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 91 60 VBottom 2
SYMATTR InstName L1
SYMATTR Value flux = {L*Is}*tanh((x/{Is})**{a})**{1/a}
SYMATTR SpiceLine Ipk=7 Rser=0.001 Rpar=0 Cpar=0
SYMBOL schottky -1328 -432 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D1
SYMATTR Value B530C
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL polcap -976 -496 R0
WINDOW 3 24 56 Left 2
WINDOW 123 24 84 Left 2
SYMATTR Value 47µ
SYMATTR InstName Cout1
SYMATTR Description Capacitor
SYMATTR Type cap
SYMATTR SpiceLine V=35 Rser=0.1
SYMBOL res -800 -512 R0
SYMATTR InstName RLoad1
SYMATTR Value 5
SYMBOL sw -1568 -592 R90
SYMATTR InstName S1
SYMBOL voltage -1616 752 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value PULSE(0 5 0 2999n 1n 0n 3u)
SYMBOL res -1824 704 R0
SYMATTR InstName R5
SYMATTR Value 100k
SYMBOL Opamps\\LTC6247 -1680 704 R180
SYMATTR InstName U1
SYMBOL voltage -1968 720 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value 5V
SYMBOL load -640 -480 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I1
SYMATTR Value PULSE(0 2 1.2m 100n 100n 600u 3m)
SYMBOL PowerProducts\\LT6105 -1456 -32 R90
SYMATTR InstName U3
SYMBOL res -960 -608 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName Rsense
SYMATTR Value 0.1
SYMBOL res -1184 -128 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R7
SYMATTR Value 500
SYMBOL res -1184 32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R8
SYMATTR Value 500
SYMBOL sw -1424 688 R90
SYMATTR InstName S2
SYMATTR Value SW2
SYMBOL res -1344 128 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R9
SYMATTR Value 1k
SYMBOL cap -1360 224 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C4
SYMATTR Value 330p
SYMBOL Digital\\srflop -1408 352 R90
WINDOW 3 0 0 Invisible 2
SYMATTR Value ref = 1V vhigh = 2V
SYMATTR InstName A1
SYMBOL Digital\\inv -1680 416 R270
SYMATTR InstName A2
SYMBOL voltage -896 736 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 2.5
SYMBOL res -544 544 R0
SYMATTR InstName R1
SYMATTR Value 2.6k
SYMBOL res -544 656 R0
SYMATTR InstName R4
SYMATTR Value 2.6k
SYMBOL res -960 528 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 7.383k
SYMBOL cap -1104 528 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 5.54n
SYMBOL Opamps\\LTC6247 -1008 688 M0
SYMATTR InstName U2
SYMBOL cap -1056 448 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value 144p
SYMBOL res -688 432 R0
SYMATTR InstName R3
SYMATTR Value 470
SYMBOL cap -688 560 R0
SYMATTR InstName C2
SYMATTR Value 10n
TEXT -1392 -800 Left 2 !.tran 0 3m 0 10n startup
TEXT -2176 -688 Left 2 !.model SW SW(Ron = 0.001 Vt = 3)
TEXT -2168 -720 Left 2 !.lib opamp.sub
TEXT -2176 -664 Left 2 !.model SW2 SW(Ron = 0.001 Vt = 4)
TEXT -1368 -688 Left 2 !.param L=20uH Is=2A a=1
TEXT -1288 -40 Left 2 ;Isense Vout = Rsense * Isense * Rout/Rin