Version 4 SHEET 1 880 1304 WIRE -2288 80 -2304 80 WIRE -1936 96 -1984 96 WIRE -1840 96 -1872 96 WIRE -1824 96 -1840 96 WIRE -2512 128 -2576 128 WIRE -2480 128 -2512 128 WIRE -2400 128 -2416 128 WIRE -2336 128 -2400 128 WIRE -2304 128 -2304 80 WIRE -1424 128 -1488 128 WIRE -1392 128 -1424 128 WIRE -1280 128 -1312 128 WIRE -1152 128 -1200 128 WIRE -1056 128 -1056 112 WIRE -960 128 -960 112 WIRE -864 128 -864 96 WIRE -768 128 -768 96 WIRE -2576 144 -2576 128 WIRE -1984 160 -1984 96 WIRE -1984 160 -2000 160 WIRE -1952 160 -1984 160 WIRE -1840 160 -1840 96 WIRE -1840 160 -1872 160 WIRE -2064 192 -2064 160 WIRE -2064 192 -2096 192 WIRE -2016 192 -2064 192 WIRE -1840 192 -1840 160 WIRE -1840 192 -1920 192 WIRE -2400 208 -2512 208 WIRE -2336 208 -2400 208 WIRE -1424 208 -1424 192 WIRE -1392 208 -1424 208 WIRE -1280 208 -1312 208 WIRE -2096 224 -2096 192 WIRE -1280 224 -1280 208 WIRE -1152 224 -1152 208 WIRE -1152 224 -1280 224 WIRE -1056 224 -1056 208 WIRE -1056 224 -1152 224 WIRE -960 224 -960 208 WIRE -960 224 -1056 224 WIRE -864 224 -864 208 WIRE -864 224 -960 224 WIRE -768 224 -768 208 WIRE -768 224 -864 224 WIRE -2400 240 -2400 208 WIRE -2304 240 -2304 208 WIRE -2272 240 -2304 240 WIRE -1424 240 -1424 208 WIRE -2000 256 -2000 240 WIRE -768 256 -768 224 WIRE -1312 288 -1344 288 WIRE -1344 304 -1344 288 WIRE -1344 304 -1424 304 WIRE -1072 304 -1152 304 WIRE -2512 320 -2512 304 WIRE -1424 320 -1424 304 WIRE -1344 320 -1344 304 WIRE -1152 320 -1152 304 WIRE -2384 336 -2384 304 WIRE -2576 352 -2576 224 WIRE -2576 352 -2656 352 WIRE -2544 352 -2576 352 WIRE -2384 352 -2464 352 WIRE -976 352 -976 336 WIRE -2656 368 -2656 352 WIRE -2384 368 -2432 368 WIRE -2000 368 -2000 336 WIRE -1072 368 -1072 304 WIRE -2544 384 -2560 384 WIRE -2432 384 -2432 368 WIRE -2384 384 -2432 384 WIRE -2288 384 -2320 384 WIRE -2272 384 -2288 384 WIRE -2432 400 -2432 384 WIRE -2384 400 -2432 400 WIRE -2432 416 -2432 400 WIRE -2368 416 -2368 400 WIRE -2368 416 -2432 416 WIRE -1424 416 -1424 384 WIRE -1344 416 -1344 400 WIRE -1344 416 -1424 416 WIRE -1152 416 -1152 400 WIRE -2528 432 -2528 416 WIRE -2528 432 -2656 432 WIRE -2512 432 -2512 416 WIRE -2512 432 -2528 432 WIRE -2496 432 -2496 416 WIRE -2496 432 -2512 432 WIRE -2464 432 -2496 432 WIRE -2432 432 -2432 416 WIRE -2432 432 -2464 432 WIRE -912 432 -928 432 WIRE -800 432 -832 432 WIRE -2512 448 -2512 432 WIRE -2464 448 -2464 432 WIRE -2352 448 -2464 448 WIRE -2272 448 -2272 384 WIRE -1344 448 -1344 416 WIRE -2352 496 -2416 496 WIRE -1152 512 -1152 480 WIRE -1072 512 -1072 432 WIRE -1072 512 -1152 512 WIRE -976 512 -976 448 WIRE -2352 544 -2400 544 WIRE -2160 544 -2192 544 WIRE -2464 608 -2464 448 WIRE -2272 608 -2272 592 WIRE -2272 608 -2464 608 FLAG -2400 240 0 FLAG -1344 448 0 FLAG -768 256 0 FLAG -2512 128 Isense FLAG -2512 448 0 FLAG -1056 112 Vdd FLAG -960 112 I_lim FLAG -2560 384 I_lim FLAG -2384 304 clk FLAG -2416 496 clk FLAG -2288 384 reset FLAG -2160 544 pwm FLAG -1152 512 snub_L2 FLAG -1152 304 snub_L1 FLAG -976 512 0 FLAG -1152 128 Vin FLAG -2512 304 Vdd FLAG -1312 288 Vout FLAG -864 96 clk FLAG -2400 544 Vdd FLAG -768 96 transient FLAG -1488 128 snub_L1 FLAG -1424 208 snub_L2 FLAG -800 432 transient FLAG -976 336 Vout FLAG -2000 368 pwm FLAG -2288 80 snub_L1 FLAG -1824 96 CT FLAG -2272 240 CT FLAG -2096 224 0 SYMBOL voltage -1152 112 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 WINDOW 0 -14 56 Left 2 WINDOW 3 17 93 Left 2 SYMATTR InstName V2 SYMATTR Value 62.8 SYMBOL voltage -864 112 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 WINDOW 3 -285 100 Invisible 2 WINDOW 0 -12 56 Left 2 SYMATTR Value PULSE(0 12 6.67u 100n 100n 3.u 6.67u) SYMATTR InstName V3 SYMBOL nmos -1920 240 M270 WINDOW 0 -6 55 VLeft 2 WINDOW 3 -9 -48 Invisible 2 SYMATTR InstName M2 SYMATTR Value IPB065N15N3 SYMBOL polcap -1440 320 R0 WINDOW 0 -31 8 Left 2 WINDOW 3 -49 53 Left 2 SYMATTR InstName C1 SYMATTR Value 220µ SYMATTR SpiceLine V=250 SYMBOL diode -1440 240 R0 WINDOW 3 24 64 Invisible 2 SYMATTR Value RFN10NS8D SYMATTR InstName D2 SYMBOL res -1360 304 R0 SYMATTR InstName R2 SYMATTR Value 12.6 SYMBOL ind2 -1408 144 R270 WINDOW 0 34 34 VTop 2 WINDOW 3 60 77 VBottom 2 SYMATTR InstName L1 SYMATTR Value 58µ SYMBOL ind2 -1408 192 M90 WINDOW 0 4 56 VBottom 2 WINDOW 3 -23 99 VTop 2 SYMATTR InstName L2 SYMATTR Value 58µ SYMBOL res -1984 352 R180 WINDOW 0 43 29 VRight 2 WINDOW 3 -12 33 VRight 2 SYMATTR InstName R1 SYMATTR Value 5 SYMBOL polcap -1440 128 R0 WINDOW 0 -30 17 Left 2 WINDOW 3 27 18 Left 2 SYMATTR InstName C2 SYMATTR Value 3µ SYMBOL cap -2000 144 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 20 12 VTop 2 SYMATTR InstName C3 SYMATTR Value 0.0015µ SYMATTR SpiceLine V=250 Irms=0 Rser=0 Lser=0 mfg="Murata" pn="GCM21A5C2E152JX01" type="C0G" SYMBOL res -1968 176 R270 WINDOW 0 36 27 VTop 2 WINDOW 3 61 67 VBottom 2 SYMATTR InstName R4 SYMATTR Value 1K SYMBOL diode -1872 80 R90 WINDOW 0 6 -4 VBottom 2 WINDOW 3 -16 118 Invisible 2 SYMATTR InstName D1 SYMATTR Value RFN10NS8D SYMBOL ind2 -2320 224 M180 WINDOW 0 33 95 Left 2 WINDOW 3 44 70 VLeft 2 SYMATTR InstName L3 SYMATTR Value 5.1µ SYMBOL ind2 -2320 224 R180 WINDOW 0 6 123 Left 2 WINDOW 3 44 14 VRight 2 SYMATTR InstName L4 SYMATTR Value 51.1m SYMBOL res -2384 224 R180 WINDOW 0 -21 110 Left 2 WINDOW 3 43 20 VRight 2 SYMATTR InstName R7 SYMATTR Value 270K SYMBOL schottky -2416 112 R90 WINDOW 0 -4 17 VBottom 2 WINDOW 3 28 56 Invisible 2 SYMATTR InstName D3 SYMATTR Value RB098BM150 SYMBOL res -2496 224 R180 WINDOW 0 -10 34 VRight 2 WINDOW 3 40 35 VRight 2 SYMATTR InstName R8 SYMATTR Value 40 SYMBOL nmos -928 352 M0 WINDOW 0 -12 49 VLeft 2 WINDOW 3 -11 -22 Invisible 2 SYMATTR InstName M1 SYMATTR Value IPB065N15N3 SYMBOL res -816 416 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R5 SYMATTR Value 5 SYMBOL voltage -768 112 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 WINDOW 3 -285 100 Invisible 2 WINDOW 0 -12 56 Left 2 SYMATTR Value PULSE(0 12 12m 100n 100n 11u 22.8u 3) SYMATTR InstName V1 SYMBOL ind2 -1296 144 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 4 56 VBottom 2 SYMATTR InstName L5 SYMATTR Value 4.3µ SYMBOL Digital\\and -2352 304 R0 WINDOW 0 -22 65 Left 2 WINDOW 3 0 0 Invisible 0 SYMATTR InstName A1 SYMATTR Value Vhigh=12 Vlow=0 Ref=1 SYMBOL voltage -1056 112 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 WINDOW 0 -14 56 Left 2 WINDOW 3 17 93 Left 2 SYMATTR InstName V4 SYMATTR Value 5 SYMBOL voltage -960 112 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 WINDOW 0 -14 56 Left 2 WINDOW 3 17 93 Left 2 SYMATTR InstName V5 SYMATTR Value 4.8 SYMBOL Comparators\\LT1712 -2512 368 R0 WINDOW 0 25 41 Left 2 WINDOW 3 9 -48 Left 2 SYMATTR InstName U1 SYMBOL cap -2640 432 R180 WINDOW 0 24 56 Left 2 WINDOW 3 24 8 Left 2 SYMATTR InstName C4 SYMATTR Value 50p SYMATTR SpiceLine V=250 Irms=0 Rser=0 Lser=0 SYMBOL res -2560 240 R180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R9 SYMATTR Value 1K SYMBOL Digital\\dflop -2272 592 M180 WINDOW 3 8 12 Invisible 2 SYMATTR Value Vhigh=12 Vlow=0 Ref=1 SYMATTR InstName A2 SYMBOL res -1168 304 R0 SYMATTR InstName R6 SYMATTR Value 1 SYMBOL cap -1136 480 R180 WINDOW 0 24 56 Left 2 WINDOW 3 24 8 Left 2 SYMATTR InstName C5 SYMATTR Value 1.5µ SYMATTR SpiceLine V=250 Irms=0 Rser=0 Lser=0 SYMBOL zener -1056 432 R180 WINDOW 0 -34 63 Left 2 WINDOW 3 24 0 Invisible 2 SYMATTR InstName D4 SYMATTR Value 1N5378B TEXT -2120 -112 Left 2 !.tran 0 20m 0 50u TEXT -1408 72 Left 2 !K1 L1 L2 1 TEXT -2440 48 Left 2 !K2 L3 L4 1