Version 4 SHEET 1 2248 680 WIRE 1824 -1888 1792 -1888 WIRE 1968 -1888 1904 -1888 WIRE 1984 -1888 1968 -1888 WIRE 1792 -1856 1792 -1888 WIRE 1968 -1856 1968 -1888 WIRE 1792 -1760 1792 -1776 WIRE 1968 -1760 1968 -1792 WIRE 1968 -1760 1792 -1760 WIRE 1792 -1744 1792 -1760 WIRE 1824 -1696 1792 -1696 WIRE 1968 -1696 1904 -1696 WIRE 1984 -1696 1968 -1696 WIRE 1792 -1664 1792 -1696 WIRE 1968 -1664 1968 -1696 WIRE 1792 -1568 1792 -1584 WIRE 1968 -1568 1968 -1600 WIRE 1968 -1568 1792 -1568 WIRE 1792 -1552 1792 -1568 WIRE 1824 -1504 1792 -1504 WIRE 1968 -1504 1904 -1504 WIRE 1984 -1504 1968 -1504 WIRE 1792 -1472 1792 -1504 WIRE 1968 -1472 1968 -1504 WIRE 1792 -1376 1792 -1392 WIRE 1968 -1376 1968 -1408 WIRE 1968 -1376 1792 -1376 WIRE 1792 -1360 1792 -1376 WIRE 256 -1248 176 -1248 WIRE 368 -1248 368 -1280 WIRE 368 -1248 336 -1248 WIRE 528 -1248 368 -1248 WIRE 848 -1248 528 -1248 WIRE 1328 -1248 848 -1248 WIRE 1472 -1248 1328 -1248 WIRE 1728 -1248 1472 -1248 WIRE 1328 -1232 1328 -1248 WIRE 1472 -1232 1472 -1248 WIRE 1728 -1232 1728 -1248 WIRE 176 -1200 176 -1248 WIRE 368 -1184 368 -1248 WIRE 528 -1184 528 -1248 WIRE 624 -1136 592 -1136 WIRE 1472 -1136 1472 -1152 WIRE 1472 -1136 704 -1136 WIRE 368 -1104 368 -1120 WIRE 1472 -1088 1472 -1136 WIRE 176 -1072 176 -1120 WIRE 848 -1072 848 -1248 WIRE 1328 -1040 1328 -1152 WIRE 1408 -1040 1328 -1040 WIRE 1328 -1024 1328 -1040 WIRE 528 -1008 528 -1088 WIRE 848 -976 848 -992 WIRE 848 -976 720 -976 WIRE 976 -976 848 -976 WIRE 720 -944 720 -976 WIRE 976 -944 976 -976 WIRE 528 -896 528 -928 WIRE 640 -896 640 -928 WIRE 640 -896 528 -896 WIRE 656 -896 640 -896 WIRE 1056 -896 1056 -928 WIRE 1056 -896 1040 -896 WIRE 1136 -896 1056 -896 WIRE 1648 -896 1216 -896 WIRE 1728 -896 1728 -1152 WIRE 1728 -896 1648 -896 WIRE 1648 -864 1648 -896 WIRE 1728 -864 1728 -896 WIRE 528 -832 528 -896 WIRE 528 -832 464 -832 WIRE 592 -832 528 -832 WIRE 1136 -800 1120 -800 WIRE 1232 -800 1216 -800 WIRE 1472 -800 1472 -992 WIRE 1472 -800 1296 -800 WIRE 464 -784 464 -832 WIRE 592 -784 592 -832 WIRE 1648 -752 1648 -800 WIRE 1728 -752 1728 -800 WIRE 1728 -752 1648 -752 WIRE 1760 -752 1728 -752 WIRE 1328 -720 1328 -944 WIRE 1472 -688 1472 -800 WIRE 1472 -688 1456 -688 WIRE 1568 -688 1472 -688 WIRE 1728 -688 1728 -752 WIRE 1728 -688 1632 -688 WIRE 1936 -688 1728 -688 WIRE 2032 -688 2016 -688 WIRE 2096 -688 2032 -688 WIRE 2128 -688 2096 -688 WIRE 720 -672 720 -848 WIRE 1120 -672 1120 -800 WIRE 1120 -672 720 -672 WIRE 1264 -672 1120 -672 WIRE 464 -656 464 -720 WIRE 592 -656 592 -704 WIRE 592 -656 464 -656 WIRE 464 -640 464 -656 WIRE 720 -640 720 -672 WIRE 1472 -624 1472 -688 WIRE 1728 -608 1728 -688 WIRE 2032 -608 2032 -688 WIRE 2096 -608 2096 -688 WIRE 720 -496 720 -560 WIRE 848 -496 720 -496 WIRE 976 -496 976 -848 WIRE 976 -496 848 -496 WIRE 1328 -496 1328 -624 WIRE 1328 -496 976 -496 WIRE 1472 -496 1472 -544 WIRE 1472 -496 1328 -496 WIRE 1728 -496 1728 -544 WIRE 1728 -496 1472 -496 WIRE 2032 -496 2032 -544 WIRE 2032 -496 1728 -496 WIRE 2096 -496 2096 -528 WIRE 2096 -496 2032 -496 WIRE 848 -464 848 -496 FLAG 368 -1280 VPos FLAG 1792 -1744 0 FLAG 1984 -1888 PIn FLAG 1792 -1360 0 FLAG 1984 -1504 eff FLAG 1792 -1552 0 FLAG 1984 -1696 POut FLAG 176 -1072 0 FLAG 368 -1104 0 FLAG 1456 -688 V_SW FLAG 1760 -752 VNeg FLAG 2128 -688 VNegFilt FLAG 848 -464 0 FLAG 640 -928 IN1 FLAG 1056 -928 IN2 FLAG 464 -640 0 SYMBOL res 240 -1264 M90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName RIn SYMATTR Value 1 SYMBOL bv 1792 -1872 M0 SYMATTR InstName B1 SYMATTR Value V=V(VPos)*I(RIn) SYMBOL res 1920 -1904 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 10k SYMBOL cap 1952 -1856 R0 SYMATTR InstName C3 SYMATTR Value 10n SYMBOL bv 1792 -1488 M0 SYMATTR InstName B2 SYMATTR Value V=V(Pout)/V(PIn) SYMBOL res 1920 -1520 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 10k SYMBOL cap 1952 -1472 R0 SYMATTR InstName C4 SYMATTR Value 100n SYMBOL bv 1792 -1680 M0 SYMATTR InstName B3 SYMATTR Value V=V(VNegFilt)*I(ROut) SYMBOL res 1920 -1712 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R3 SYMATTR Value 10k SYMBOL cap 1952 -1664 R0 SYMATTR InstName C6 SYMATTR Value 10n SYMBOL voltage 176 -1216 R0 WINDOW 3 43 39 Left 2 WINDOW 123 0 0 Left 2 WINDOW 39 24 124 Left 2 WINDOW 0 40 13 Left 2 SYMATTR Value 20 SYMATTR InstName V2 SYMBOL cap 384 -1120 R180 WINDOW 0 24 56 Left 2 WINDOW 3 24 8 Left 2 SYMATTR InstName C9 SYMATTR Value 1µ SYMBOL pnp 656 -848 M180 SYMATTR InstName Q1 SYMATTR Value BC556B SYMBOL pnp 1040 -848 R180 SYMATTR InstName Q2 SYMATTR Value BC556B SYMBOL res 832 -1088 R0 SYMATTR InstName R5 SYMATTR Value 22k SYMBOL res 704 -656 R0 SYMATTR InstName R6 SYMATTR Value {R6} SYMBOL npn 1264 -720 R0 SYMATTR InstName Q3 SYMATTR Value BC546B SYMBOL pnp 1408 -992 M180 SYMATTR InstName Q5 SYMATTR Value BC556B SYMBOL res 1344 -1248 M0 SYMATTR InstName R8 SYMATTR Value 1k SYMBOL res 1344 -1040 M0 SYMATTR InstName R9 SYMATTR Value {R9} SYMBOL ind 1456 -640 R0 SYMATTR InstName L2 SYMATTR Value 1m SYMATTR SpiceLine Rser=10 SYMBOL cap 1712 -544 M180 WINDOW 0 24 56 Left 2 WINDOW 3 24 8 Left 2 SYMATTR InstName C2 SYMATTR Value 1µ SYMBOL res 2080 -624 R0 SYMATTR InstName RLoad2 SYMATTR Value {6.0/30m} SYMBOL res 1920 -704 M90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName ROut SYMATTR Value 10 SYMBOL cap 2048 -544 R180 WINDOW 0 24 56 Left 2 WINDOW 3 24 8 Left 2 SYMATTR InstName C5 SYMATTR Value 10µ SYMBOL zener 1712 -800 M180 WINDOW 0 24 64 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D2 SYMATTR Value BZX84C6V2L SYMATTR Description Diode SYMATTR Type diode SYMBOL res 1712 -1248 R0 SYMATTR InstName R4 SYMATTR Value {R4} SYMBOL cap 448 -784 R0 SYMATTR InstName C1 SYMATTR Value 2n2 SYMBOL res 576 -800 R0 SYMATTR InstName R11 SYMATTR Value 10k SYMBOL cap 1296 -784 M270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C10 SYMATTR Value {C10} SYMBOL res 1232 -816 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R13 SYMATTR Value {R13} SYMBOL schottky 1632 -704 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName D6 SYMATTR Value PMEG6002EB SYMATTR Description Diode SYMATTR Type diode SYMBOL res 1232 -912 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R15 SYMATTR Value {R15} SYMBOL res 1488 -1248 M0 SYMATTR InstName R16 SYMATTR Value 10 SYMBOL pnp 592 -1088 R180 SYMATTR InstName Q6 SYMATTR Value BC556B SYMBOL res 608 -1152 M90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R18 SYMATTR Value 1k SYMBOL res 544 -1024 M0 SYMATTR InstName R19 SYMATTR Value {R19} SYMBOL cap 1632 -800 M180 WINDOW 0 24 56 Left 2 WINDOW 3 24 8 Left 2 SYMATTR InstName C7 SYMATTR Value 1n TEXT 128 -416 Left 2 !.tran 8m TEXT 128 -448 Left 2 !.ic V(VNeg)=0 I(L2)=0 TEXT 1792 -840 Left 2 ;8.5mW TEXT 1760 -1144 Left 2 ;41mW TEXT 1520 -1184 Left 2 ;0.7mW TEXT 1496 -992 Left 2 ;10.5mW TEXT 1176 -992 Left 2 ;11.1mW TEXT 1384 -536 Left 2 ;3.4mW TEXT 1568 -632 Left 2 ;3.1mW TEXT 1144 -952 Left 2 ;3mW TEXT 1144 -728 Left 2 ;6.3mW TEXT 928 -1040 Left 2 ;39mW TEXT 768 -1912 Left 2 ;Efficiency at 20V, 30V, 40V input:\nOutput 10mA/-6.3V: 42.8%, 30.4%, 22.2%\nOutput 20mA/-6.2V: 55.4%, 44.0%, 34.3% TEXT 320 -1856 Left 2 !#.step param R19 15k 25k 5k\n.param R19 22k TEXT 320 -1784 Left 2 !#.step param R13 500 2k 250\n.param R13 750 TEXT 320 -1712 Left 2 !#.step param C10 100p 250p 50p\n.param C10 68p TEXT 320 -1632 Left 2 !#.step param R9 3k 10k\n.param R9 8k2 TEXT 320 -1552 Left 2 !#.step param R15 50 250 50\n.param R15 100 TEXT 320 -1472 Left 2 !#.step param R4 15k 35k 5k\n.param R4 22k TEXT 1224 -600 Left 2 ;2.7mW TEXT 56 -2056 Left 2 !.model PMEG6002EB D(IS = 7.716E-7 N = 0.981 BV = 66 IBV = 0.001 RS = 1.099 CJO = 2.586E-11 VJ = 0.3612 M = 0.4686 FC = 0.5 EG = 0.69 XTI = 2) TEXT 64 -2384 Left 2 !.model SMBT2907A PNP(\n+ AF= 1.00E+00 BF= 3.08E+02 BR= 2.18E+01 CJC= 1.93E-11\n\n+ CJE= 2.66E-11 CJS= 0.00E+00 EG= 1.11E+00 FC= 5.00E-01\n\n+ IKF= 8.42E-01 IKR= 1.00E+00 IRB= 1.25E-02 IS= 2.32E-13\n\n+ ISC= 1.65E-13 ISE= 6.69E-16 ITF= 3.36E-01 KF= 0.00E+00\n\n+ MJC= 4.65E-01 MJE= 4.60E-01 MJS= 3.30E-01 NC= 1.13E+00\n\n+ NE= 1.09E+00 NF= 1.04E+00 NR= 1.12E+00 PTF= 0.00E+00\n\n+ RB= 4.02E+01 RBM= 1.00E-02 RC= 8.46E-01 RE= 1.00E-02\n\n+ TF= 4.95E-10 TR= 0.00E+00 VAF= 1.41E+02 VAR= 1.35E+01\n\n+ VJC= 3.00E-01 VJE= 3.49E-01 VJS= 7.50E-01 VTF= 6.54E+00\n\n+ XCJC= 1.00E+00 XTB= 0.00E+00 XTF= 1.87E+01 XTI= 3.00E+00) TEXT 456 -1368 Left 2 !#.step param R6 1k 10k 2k\n.param R6 4k7