Version 4 SHEET 1 5116 1832 WIRE 720 -912 576 -912 WIRE 912 -912 784 -912 WIRE 912 -880 912 -912 WIRE 576 -752 576 -912 WIRE 576 -752 -400 -752 WIRE 624 -752 576 -752 WIRE 912 -752 912 -800 WIRE 912 -752 880 -752 WIRE 624 -672 -176 -672 WIRE 1008 -672 880 -672 WIRE 1120 -672 1088 -672 WIRE 624 -592 576 -592 WIRE 912 -592 912 -688 WIRE 912 -592 880 -592 WIRE 960 -592 912 -592 WIRE 1056 -592 1040 -592 WIRE 576 -528 576 -592 WIRE 864 -416 -1024 -416 WIRE 1248 -416 864 -416 WIRE 336 -368 176 -368 WIRE 592 -368 400 -368 WIRE 592 -352 592 -368 WIRE -400 -304 -400 -752 WIRE -400 -304 -544 -304 WIRE 176 -304 176 -368 WIRE 176 -304 -400 -304 WIRE 1952 -304 1824 -304 WIRE 2016 -304 1952 -304 WIRE 2208 -304 2160 -304 WIRE 2304 -304 2208 -304 WIRE 2400 -304 2304 -304 WIRE 2496 -304 2400 -304 WIRE 2304 -288 2304 -304 WIRE 2400 -288 2400 -304 WIRE -544 -272 -544 -304 WIRE 176 -256 176 -304 WIRE 224 -256 176 -256 WIRE 592 -256 592 -272 WIRE 592 -256 480 -256 WIRE 864 -256 864 -416 WIRE 960 -256 864 -256 WIRE 1824 -256 1824 -304 WIRE 1952 -256 1952 -304 WIRE 1248 -240 1248 -416 WIRE 1344 -240 1248 -240 WIRE 1728 -240 1424 -240 WIRE 2208 -240 2208 -304 WIRE 960 -224 960 -256 WIRE 864 -208 864 -256 WIRE 1344 -208 1344 -240 WIRE 1248 -192 1248 -240 WIRE 1696 -192 1552 -192 WIRE 2016 -192 2016 -304 WIRE 2048 -192 2016 -192 WIRE 2160 -192 2160 -304 WIRE 2160 -192 2128 -192 WIRE 2400 -192 2400 -208 WIRE -544 -176 -544 -192 WIRE 224 -176 -96 -176 WIRE 672 -176 480 -176 WIRE 784 -176 752 -176 WIRE 592 -160 592 -256 WIRE 1728 -160 1728 -240 WIRE 1952 -160 1952 -192 WIRE 1952 -160 1728 -160 WIRE 784 -128 784 -176 WIRE 816 -128 784 -128 WIRE 1120 -112 1120 -672 WIRE 1200 -112 1120 -112 WIRE 1696 -112 1696 -192 WIRE 2208 -112 2208 -176 WIRE 2208 -112 1696 -112 WIRE 2304 -112 2304 -208 WIRE 2304 -112 2208 -112 WIRE 2400 -112 2304 -112 WIRE -400 -96 -400 -304 WIRE -400 -96 -608 -96 WIRE 224 -96 176 -96 WIRE 592 -96 480 -96 WIRE 688 -96 592 -96 WIRE 864 -96 864 -112 WIRE 864 -96 768 -96 WIRE 960 -96 960 -160 WIRE 960 -96 864 -96 WIRE 1056 -80 1056 -592 WIRE 1248 -80 1248 -96 WIRE 1248 -80 1056 -80 WIRE 1344 -80 1344 -144 WIRE 1344 -80 1248 -80 WIRE 1424 -80 1424 -240 WIRE 1440 -80 1424 -80 WIRE 1552 -80 1552 -192 WIRE 1552 -80 1520 -80 WIRE 1584 -80 1552 -80 WIRE 1824 -80 1824 -192 WIRE 1824 -80 1664 -80 WIRE -1024 -48 -1024 -416 WIRE -400 -16 -400 -96 WIRE 176 -16 176 -96 WIRE 1824 -16 1824 -80 WIRE 1952 -16 1952 -160 WIRE 2208 -16 2208 -112 WIRE 2304 -16 2304 -112 WIRE 2048 16 2016 16 WIRE 2160 16 2128 16 WIRE -608 32 -608 -96 WIRE -576 32 -608 32 WIRE -96 32 -96 -176 WIRE -96 32 -240 32 WIRE 240 32 -96 32 WIRE 1248 48 1248 -80 WIRE 1520 48 1248 48 WIRE 1648 48 1600 48 WIRE -576 96 -800 96 WIRE -176 96 -176 -672 WIRE -176 96 -240 96 WIRE 512 96 -176 96 WIRE 48 112 -80 112 WIRE 864 112 864 -96 WIRE 1648 112 1648 48 WIRE 1648 112 864 112 WIRE -80 128 -80 112 WIRE 1824 128 1824 48 WIRE 1952 128 1952 48 WIRE 1952 128 1824 128 WIRE 2016 128 2016 16 WIRE 2016 128 1952 128 WIRE 2160 128 2160 16 WIRE 2208 128 2208 48 WIRE 2208 128 2160 128 WIRE 2272 128 2208 128 WIRE 2304 128 2304 64 WIRE 2304 128 2272 128 WIRE 48 144 48 112 WIRE -208 160 -240 160 WIRE 2272 176 2272 128 WIRE 1136 208 1040 208 WIRE 2496 208 2496 -304 WIRE -688 224 -736 224 WIRE -576 224 -608 224 WIRE -80 224 -80 208 WIRE -80 224 -240 224 WIRE 1248 224 1248 48 WIRE 1344 224 1248 224 WIRE 864 240 864 112 WIRE 976 240 864 240 WIRE 1136 240 1136 208 WIRE 2400 240 2400 -112 WIRE 1344 256 1344 224 WIRE 864 272 864 240 WIRE 1248 272 1248 224 WIRE -576 288 -640 288 WIRE 48 288 48 208 WIRE 48 288 -240 288 WIRE 976 288 976 240 WIRE -800 336 -800 96 WIRE -640 336 -640 288 WIRE -496 352 -496 336 WIRE 512 352 512 96 WIRE 560 352 512 352 WIRE 816 352 640 352 WIRE 1136 352 1136 320 WIRE 1200 352 1136 352 WIRE 864 384 864 368 WIRE 976 384 976 352 WIRE 976 384 864 384 WIRE 1248 384 1248 368 WIRE 1344 384 1344 320 WIRE 1344 384 1248 384 WIRE 2400 384 2400 320 WIRE 2400 384 2224 384 WIRE 2496 384 2496 288 WIRE 2496 384 2400 384 WIRE -208 432 -208 160 WIRE 864 432 864 384 WIRE 864 432 -208 432 WIRE 1248 432 1248 384 WIRE 1248 432 864 432 WIRE 2400 448 2400 384 WIRE 864 464 864 432 WIRE -1024 576 -1024 32 WIRE -800 576 -800 400 WIRE -800 576 -1024 576 WIRE -736 576 -736 224 WIRE -736 576 -800 576 WIRE -640 576 -640 400 WIRE -640 576 -736 576 WIRE -496 576 -496 416 WIRE -496 576 -640 576 WIRE -400 576 -400 336 WIRE -400 576 -496 576 WIRE -304 576 -304 336 WIRE -304 576 -400 576 WIRE 864 576 864 544 WIRE 864 576 -304 576 WIRE 2400 576 2400 528 WIRE -496 624 -496 576 WIRE 240 640 240 32 WIRE 1040 640 1040 208 WIRE 1040 640 240 640 WIRE 48 720 48 288 WIRE 2224 720 2224 384 WIRE 2224 720 48 720 FLAG -544 -176 0 FLAG 176 -16 0 FLAG 576 -528 0 FLAG 2400 576 0 FLAG 2400 -192 0 FLAG 2272 176 0 FLAG -496 624 0 SYMBOL PowerProducts\\LTC3721-1 -400 160 R0 SYMATTR InstName U1 SYMBOL nmos 816 -208 R0 WINDOW 3 -9 -147 VRight 2 SYMATTR Value SPA11N60C3 SYMATTR InstName M1 SYMBOL nmos 816 272 R0 WINDOW 3 -99 111 Left 2 SYMATTR Value SPA11N60C3 SYMATTR InstName M2 SYMBOL ind2 1616 32 R90 WINDOW 0 4 56 VBottom 2 WINDOW 3 41 65 VTop 2 SYMATTR InstName L2 SYMATTR Value 4.037m SYMATTR Type ind SYMATTR SpiceLine Rser=0.1 SYMBOL cap -512 352 R0 WINDOW 3 -6 89 Left 2 SYMATTR Value 970p SYMATTR InstName C9 SYMBOL res -704 240 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R11 SYMATTR Value 68k SYMBOL cap -656 336 R0 SYMATTR InstName C10 SYMATTR Value 1p SYMBOL voltage -544 -288 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V2 SYMATTR Value 11 SYMBOL cap -816 336 R0 SYMATTR InstName C12 SYMATTR Value 2µ2 SYMATTR SpiceLine Rser=0.03 SYMBOL schottky 976 -160 R180 WINDOW 0 24 72 Left 2 WINDOW 3 -9 63 VRight 2 SYMATTR InstName D11 SYMATTR Value UPSC600 SYMATTR Description Diode SYMATTR Type diode SYMBOL schottky 992 352 R180 WINDOW 0 24 72 Left 2 WINDOW 3 -8 57 VRight 2 SYMATTR InstName D12 SYMATTR Value UPSC600 SYMATTR Description Diode SYMATTR Type diode SYMBOL PowerProducts\\LTC4440 352 -176 R0 WINDOW 3 6 52 Center 2 SYMATTR InstName U2 SYMBOL schottky 336 -352 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D1 SYMATTR Value MBRS1100 SYMATTR Description Diode SYMATTR Type diode SYMBOL cap 576 -160 R0 SYMATTR InstName C1 SYMATTR Value 2µ2 SYMBOL res 544 368 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R1 SYMATTR Value 2R7 SYMBOL res 656 -160 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R2 SYMATTR Value 2R7 SYMBOL res 784 -112 R90 WINDOW 0 59 98 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R3 SYMATTR Value .001 SYMBOL res 576 -368 R0 SYMATTR InstName R18 SYMATTR Value 0.001 SYMBOL nmos 1200 -192 R0 WINDOW 3 2 -153 VRight 2 SYMATTR Value SPA11N60C3 SYMATTR InstName M3 SYMBOL schottky 1360 -144 R180 WINDOW 0 24 72 Left 2 WINDOW 3 -9 63 VRight 2 SYMATTR InstName D7 SYMATTR Value UPSC600 SYMATTR Description Diode SYMATTR Type diode SYMBOL nmos 1200 272 R0 WINDOW 3 22 -153 VRight 2 SYMATTR Value SPA11N60C3 SYMATTR InstName M4 SYMBOL schottky 1360 320 R180 WINDOW 0 24 72 Left 2 WINDOW 3 -9 63 VRight 2 SYMATTR InstName D8 SYMATTR Value UPSC600 SYMATTR Description Diode SYMATTR Type diode SYMBOL PowerProducts\\LTC4440 752 -672 R0 SYMATTR InstName U5 SYMBOL schottky 720 -896 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D9 SYMATTR Value MBRS1100 SYMATTR Description Diode SYMATTR Type diode SYMBOL cap 896 -752 R0 SYMATTR InstName C2 SYMATTR Value 2µ2 SYMBOL res 992 -656 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R19 SYMATTR Value 2R7 SYMBOL res 1056 -608 R90 WINDOW 0 59 98 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R24 SYMATTR Value .001 SYMBOL res 896 -896 R0 SYMATTR InstName R25 SYMATTR Value 0.001 SYMBOL res 1152 336 R180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R26 SYMATTR Value 2R2 SYMBOL res -96 112 R0 SYMATTR InstName R4 SYMATTR Value 4k7 SYMBOL cap 32 144 R0 WINDOW 3 30 63 Left 2 SYMATTR Value 22n SYMATTR InstName C3 SYMBOL res 2384 224 R0 SYMATTR InstName R7 SYMATTR Value 21340 SYMBOL res 2480 192 R0 SYMATTR InstName R8 SYMATTR Value 43340 SYMBOL res 2384 432 R0 SYMATTR InstName R10 SYMATTR Value 330 SYMBOL voltage -1024 -64 R0 WINDOW 123 0 0 Left 2 WINDOW 39 24 124 Left 2 SYMATTR SpiceLine Rser=0.05 SYMATTR InstName V1 SYMATTR Value 373 SYMBOL diode 1840 -192 R180 WINDOW 0 24 64 Left 2 WINDOW 3 22 0 Left 2 SYMATTR InstName D2 SYMATTR Value UPSC600 SYMBOL diode 1840 48 R180 WINDOW 0 24 64 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D3 SYMATTR Value UPSC600 SYMBOL diode 1968 -192 R180 WINDOW 0 24 64 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D4 SYMATTR Value UPSC600 SYMBOL diode 1968 48 R180 WINDOW 0 24 64 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D5 SYMATTR Value UPSC600 SYMBOL ind2 1536 -96 R90 WINDOW 0 4 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName L1 SYMATTR Value 1.29m SYMATTR Type ind SYMATTR SpiceLine Rser=0.1 SYMBOL ind2 1680 -96 R90 WINDOW 0 4 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName L3 SYMATTR Value 1.29m SYMATTR Type ind SYMATTR SpiceLine Rser=0.1 SYMBOL cap 2192 -240 R0 SYMATTR InstName C4 SYMATTR Value 100µ SYMATTR SpiceLine Rser=0.1 SYMBOL cap 2192 -16 R0 SYMATTR InstName C5 SYMATTR Value 100µ SYMATTR SpiceLine Rser=0.1 SYMBOL res 2288 -304 R0 SYMATTR InstName R9 SYMATTR Value 10 SYMBOL res 2288 -32 R0 SYMATTR InstName R14 SYMATTR Value 10 SYMBOL res 2384 -304 R0 SYMATTR InstName R15 SYMATTR Value 640 SYMBOL ind2 2144 -208 R90 WINDOW 0 4 56 VBottom 2 WINDOW 3 40 45 VTop 2 SYMATTR InstName L4 SYMATTR Value 68µ SYMATTR SpiceLine Rser=0.05 SYMATTR Type ind SYMBOL ind2 2032 32 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 4 56 VBottom 2 SYMATTR InstName L5 SYMATTR Value 68µ SYMATTR SpiceLine Rser=0.05 SYMATTR Type ind SYMBOL res 848 448 R0 SYMATTR InstName R6 SYMATTR Value 0.02 TEXT -264 712 Left 2 !.tran 0 500m 0 startup TEXT 1512 152 Left 2 !K L2 L1 L3 1 TEXT 272 -24 Left 2 ;need different device TEXT 640 -520 Left 2 ;need different device TEXT -768 600 Left 2 ;970p = 70KHz bridge freq TEXT 152 -816 Left 2 ;SIMPLIFIED SCHEMATIC\nFOR SIMULTION SPEED. TEXT 2048 -352 Left 2 !K1 L4 L5 1 TEXT 2264 -40 Left 2 ;CLASS D TEXT 2280 -184 Left 2 ;CLASS D TEXT 2392 -328 Left 2 ;Microprocessor TEXT 1808 480 Left 2 ;Many of the \ndiodes here\nwould need\nchanging. TEXT 2048 -80 Left 2 ;Coupled\ninductors. TEXT 1488 248 Left 2 ;NP/NS NS/NP\n0.884513618 1.130564843 TEXT 1296 -936 Left 7 ;MAGNETISING CURRENT = I(L2)+1.13*I(L1)\n-you can see it by going "add trace" then pasting\nin.... I(L2)+1.13*I(L1) TEXT 384 -1304 Left 7 ;PLAIN FULL BRIDGE TEXT 2720 -488 Left 6 ;Magnetising current has zero DC bias in it here. LINE Normal 1680 0 1424 0 LINE Normal 1680 -16 1424 -16