Version 4
SHEET 1 1072 912
WIRE -896 -1440 -1056 -1440
WIRE -784 -1440 -816 -1440
WIRE -608 -1440 -784 -1440
WIRE -576 -1440 -608 -1440
WIRE -784 -1424 -784 -1440
WIRE -1056 -1392 -1056 -1440
WIRE -1104 -1376 -1232 -1376
WIRE -784 -1344 -784 -1360
WIRE -608 -1296 -608 -1440
WIRE -1104 -1248 -1104 -1328
WIRE -1056 -1248 -1056 -1312
WIRE -784 -1248 -784 -1264
WIRE -1232 -1072 -1232 -1376
WIRE -1184 -1072 -1232 -1072
WIRE -1072 -1072 -1120 -1072
WIRE -960 -1072 -992 -1072
WIRE -896 -1072 -960 -1072
WIRE -752 -1072 -816 -1072
WIRE -608 -1072 -608 -1216
WIRE -608 -1072 -688 -1072
WIRE -1232 -992 -1232 -1072
WIRE -1120 -992 -1232 -992
WIRE -960 -992 -960 -1072
WIRE -960 -992 -1056 -992
WIRE -816 -992 -960 -992
WIRE -608 -992 -608 -1072
WIRE -608 -992 -736 -992
WIRE -576 -992 -608 -992
WIRE -1056 -928 -1152 -928
WIRE -1056 -912 -1056 -928
WIRE -1056 -816 -1056 -832
WIRE -1152 -784 -1152 -928
WIRE -960 -768 -960 -992
WIRE -960 -768 -1120 -768
WIRE -1232 -752 -1232 -992
WIRE -1184 -752 -1232 -752
WIRE -1056 -736 -1120 -736
WIRE -960 -736 -960 -768
WIRE -1056 -720 -1056 -736
WIRE -1152 -608 -1152 -720
WIRE -1056 -608 -1056 -640
WIRE -960 -608 -960 -656
FLAG -1056 -608 0
FLAG -576 -1440 loop_out
IOPIN -576 -1440 Out
FLAG -960 -608 0
FLAG -784 -1248 0
FLAG -1152 -608 0
FLAG -1056 -816 0
FLAG -576 -992 loop_in
IOPIN -576 -992 In
FLAG -1056 -1248 0
FLAG -1104 -1248 0
SYMBOL ind -912 -1424 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L2
SYMATTR Value 33µ
SYMBOL voltage -1056 -736 R0
WINDOW 0 8 2 Left 2
WINDOW 3 7 110 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName Vref
SYMATTR Value 1
SYMBOL cap -800 -1424 R0
SYMATTR InstName C6
SYMATTR Value 1µ0
SYMBOL voltage -608 -1312 R0
WINDOW 0 93 18 Right 2
WINDOW 3 43 66 Left 2
WINDOW 123 105 82 Right 2
WINDOW 39 0 0 Left 2
SYMATTR InstName Vref1
SYMATTR Value ""
SYMATTR Value2 AC 1m
SYMBOL res -944 -640 R180
WINDOW 0 -46 96 Left 2
WINDOW 3 -50 19 Left 2
SYMATTR InstName R6
SYMATTR Value 2k0
SYMBOL res -720 -1008 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL res -976 -1088 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 7k5
SYMBOL res -800 -1088 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 180
SYMBOL res -800 -1360 R0
SYMATTR InstName R4
SYMATTR Value 10m
SYMBOL cap -1120 -1088 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 2n2
SYMBOL cap -1056 -1008 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 49 4 VBottom 2
SYMATTR InstName C2
SYMATTR Value 39p
SYMBOL cap -688 -1088 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value 1n5
SYMBOL UniversalOpamp2 -1152 -752 M0
SYMATTR InstName U1
SYMATTR Value2 Avol=1000Meg GBW=1000Meg Slew=1000Meg
SYMBOL voltage -1056 -928 R0
WINDOW 0 67 1 Right 2
WINDOW 3 37 93 Right 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName Vref3
SYMATTR Value 5
SYMBOL e -1056 -1408 R0
WINDOW 0 46 19 Left 2
WINDOW 3 47 61 Left 2
SYMATTR InstName E1
SYMATTR Value 10
TEXT -864 -768 Left 2 !.ac dec 20 1 10meg
TEXT -1136 -1504 Left 2 ;PWM-Modulator and Power Stage ("Plant")
TEXT -1064 -1152 Left 2 ;Type 3 Compensator
TEXT -1240 -328 Left 2 ;1. zero: R1, C3 @10kHz
TEXT -1240 -280 Left 2 ;2. zero: R2, C1 @10kHz
TEXT -1240 -232 Left 2 ;1. pole: R3, C3 @562kHz
TEXT -1240 -184 Left 2 ;2. pole: R2, C2 @562kHz
TEXT -1232 -384 Left 2 ;integrator: R1, C1
TEXT -1232 -520 Left 2 ;f(L2,C6) = 27,7kHz
TEXT -1232 -480 Left 2 ;fc = 75kHz
TEXT -1232 -432 Left 2 ;f(0dB) = 400Khz mit 60grad Phasenspielraum
TEXT -1432 -1608 Left 3 ;Simulation der Schleifenverstärkung mit Typ3-Kompensator, Beispiel Class-D-Verstärker