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Rework stability compensation of opamp

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This commit is contained in:
Mario Hüttel 2020-02-06 21:36:27 +01:00
parent 20780781e9
commit a67ada8ddf
2 changed files with 461 additions and 239 deletions
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61
frontend.sch
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@ -429,7 +429,7 @@ L Device:C C313
U 1 1 5E2394E4 U 1 1 5E2394E4
P 6250 4650 P 6250 4650
F 0 "C313" V 6502 4650 50 0000 C CNN F 0 "C313" V 6502 4650 50 0000 C CNN
F 1 "10u" V 6411 4650 50 0000 C CNN F 1 "Bridge" V 6411 4650 50 0000 C CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 6288 4500 50 0001 C CNN F 2 "Capacitor_SMD:C_0603_1608Metric" H 6288 4500 50 0001 C CNN
F 3 "~" H 6250 4650 50 0001 C CNN F 3 "~" H 6250 4650 50 0001 C CNN
1 6250 4650 1 6250 4650
@ -691,24 +691,22 @@ Wire Wire Line
4350 5100 4350 4350 4350 5100 4350 4350
Wire Wire Line Wire Wire Line
4350 4350 5600 4350 4350 4350 5600 4350
Wire Wire Line
5600 4350 5600 4250
Connection ~ 4350 4350 Connection ~ 4350 4350
Wire Wire Line Wire Wire Line
4350 4350 4350 4000 4350 4350 4350 4000
$Comp $Comp
L Device:R R314 L Device:R R314
U 1 1 5E3A5DAA U 1 1 5E3A5DAA
P 5600 4100 P 5600 4200
F 0 "R314" H 5670 4146 50 0000 L CNN F 0 "R314" H 5670 4246 50 0000 L CNN
F 1 "5k 0.1%" H 5670 4055 50 0000 L CNN F 1 "5k 0.1%" H 5670 4155 50 0000 L CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 5530 4100 50 0001 C CNN F 2 "Resistor_SMD:R_0603_1608Metric" V 5530 4200 50 0001 C CNN
F 3 "~" H 5600 4100 50 0001 C CNN F 3 "~" H 5600 4200 50 0001 C CNN
1 5600 4100 1 5600 4200
-1 0 0 1 -1 0 0 1
$EndComp $EndComp
Wire Wire Line Wire Wire Line
5600 3950 5600 3900 5600 4050 5600 3900
Connection ~ 5600 3900 Connection ~ 5600 3900
Wire Notes Line Wire Notes Line
5200 3950 5700 3950 5200 3950 5700 3950
@ -930,23 +928,12 @@ L Device:R R317
U 1 1 5DB0C2DA U 1 1 5DB0C2DA
P 6250 4050 P 6250 4050
F 0 "R317" V 6043 4050 50 0000 C CNN F 0 "R317" V 6043 4050 50 0000 C CNN
F 1 "250" V 6134 4050 50 0000 C CNN F 1 "680" V 6134 4050 50 0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 6180 4050 50 0001 C CNN F 2 "Resistor_SMD:R_0603_1608Metric" V 6180 4050 50 0001 C CNN
F 3 "~" H 6250 4050 50 0001 C CNN F 3 "~" H 6250 4050 50 0001 C CNN
1 6250 4050 1 6250 4050
-1 0 0 1 -1 0 0 1
$EndComp $EndComp
$Comp
L Device:C C314
U 1 1 5E82B184
P 6700 4650
F 0 "C314" V 6952 4650 50 0000 C CNN
F 1 "2u2" V 6861 4650 50 0000 C CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 6738 4500 50 0001 C CNN
F 3 "~" H 6700 4650 50 0001 C CNN
1 6700 4650
1 0 0 -1
$EndComp
Wire Wire Line Wire Wire Line
6700 4500 6700 4350 6700 4500 6700 4350
Wire Wire Line Wire Wire Line
@ -1038,9 +1025,37 @@ F 3 "" H 4650 1150 50 0001 C CNN
1 0 0 -1 1 0 0 -1
$EndComp $EndComp
Wire Wire Line Wire Wire Line
5200 3900 5600 3900 5200 3900 5250 3900
Wire Wire Line Wire Wire Line
2050 3600 2450 3600 2050 3600 2450 3600
Wire Wire Line Wire Wire Line
2000 5550 2400 5550 2000 5550 2400 5550
$Comp
L Device:R R319
U 1 1 5E6300E3
P 5400 3900
F 0 "R319" V 5193 3900 50 0000 C CNN
F 1 "100" V 5284 3900 50 0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric" V 5330 3900 50 0001 C CNN
F 3 "~" H 5400 3900 50 0001 C CNN
1 5400 3900
0 -1 -1 0
$EndComp
Wire Wire Line
5550 3900 5600 3900
$Comp
L Device:C C314
U 1 1 5E82B184
P 6700 4650
F 0 "C314" V 6952 4650 50 0000 C CNN
F 1 "DNP" V 6861 4650 50 0000 C CNN
F 2 "Capacitor_SMD:C_0603_1608Metric" H 6738 4500 50 0001 C CNN
F 3 "~" H 6700 4650 50 0001 C CNN
1 6700 4650
1 0 0 -1
$EndComp
Text Notes 5350 4700 0 50 ~ 0
This must be shorted\n
Text Notes 6800 4400 0 50 ~ 0
If the circuit oscillates, try:\nR319 = 0 Ohm\nR317 = 250 Ohm\nC313 = 10 uF\nC314 = 2.2 uF\n
$EndSCHEMATC $EndSCHEMATC

639
reflow-oven-control-pcb.kicad_pcb
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