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schematic.bak
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EESchema Schematic File Version 4
LIBS:schematic-cache
EELAYER 26 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 1 1
Title "Buck Converter"
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L schematic-rescue:IPD50R3K0CE-Transistor_FET Q3
U 1 1 5D80DBEE
P 9000 4750
F 0 "Q3" V 9250 4750 50 0000 C CNN
F 1 "IPP034N03L" V 9341 4750 50 0000 C CNN
F 2 "Package_TO_SOT_SMD:TO-252-2" H 9200 4675 50 0001 L CIN
F 3 "https://www.infineon.com/dgdl/IPx50R3K0CE_2_0.pdf?folderId=db3a3043163797a6011637d4bae7003b&fileId=db3a304339dcf4b10139e7e9ff592ce4" H 8800 5050 50 0001 L CNN
1 9000 4750
0 1 1 0
$EndComp
$Comp
L schematic-rescue:2N3904-Transistor_BJT Q1
U 1 1 5D80DC9E
P 7300 3000
F 0 "Q1" H 7491 3046 50 0000 L CNN
F 1 "2N3904" H 7491 2955 50 0000 L CNN
F 2 "Package_TO_SOT_THT:TO-92_Inline" H 7500 2925 50 0001 L CIN
F 3 "https://www.fairchildsemi.com/datasheets/2N/2N3904.pdf" H 7300 3000 50 0001 L CNN
1 7300 3000
1 0 0 -1
$EndComp
$Comp
L schematic-rescue:2N3906-Transistor_BJT Q2
U 1 1 5D80DD91
P 7500 4200
F 0 "Q2" H 7691 4154 50 0000 L CNN
F 1 "2N3906" H 7691 4245 50 0000 L CNN
F 2 "Package_TO_SOT_THT:TO-92_Inline" H 7700 4125 50 0001 L CIN
F 3 "https://www.fairchildsemi.com/datasheets/2N/2N3906.pdf" H 7500 4200 50 0001 L CNN
1 7500 4200
-1 0 0 1
$EndComp
$Comp
L schematic-rescue:C_Small-Device C2
U 1 1 5D80E077
P 6900 2050
F 0 "C2" H 6750 2100 50 0000 L CNN
F 1 "100nF" H 6600 2000 50 0000 L CNN
F 2 "Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm" H 6900 2050 50 0001 C CNN
F 3 "~" H 6900 2050 50 0001 C CNN
1 6900 2050
1 0 0 -1
$EndComp
$Comp
L schematic-rescue:L-Device L1
U 1 1 5D80E15F
P 9950 3800
F 0 "L1" V 9900 3800 50 0000 C CNN
F 1 "80uH" V 10000 3800 50 0000 C CNN
F 2 "Inductor_THT:L_Radial_D21.0mm_P15.75mm_Vishay_IHB-2" H 9950 3800 50 0001 C CNN
F 3 "~" H 9950 3800 50 0001 C CNN
1 9950 3800
0 1 1 0
$EndComp
$Comp
L schematic-rescue:R-Device R3
U 1 1 5D80EC5F
P 1650 3200
F 0 "R3" V 1750 3200 50 0000 C CNN
F 1 "100k" V 1534 3200 50 0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 1580 3200 50 0001 C CNN
F 3 "~" H 1650 3200 50 0001 C CNN
1 1650 3200
0 1 1 0
$EndComp
$Comp
L schematic-rescue:R-Device R1
U 1 1 5D80ED5D
P 1000 3200
F 0 "R1" V 1100 3200 50 0000 C CNN
F 1 "2k" V 884 3200 50 0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 930 3200 50 0001 C CNN
F 3 "~" H 1000 3200 50 0001 C CNN
1 1000 3200
0 1 1 0
$EndComp
Wire Wire Line
700 3200 850 3200
Wire Wire Line
700 1450 700 3200
Wire Wire Line
2100 4000 2100 3950
$Comp
L schematic-rescue:R-Device RT1
U 1 1 5D81155F
P 2900 4300
F 0 "RT1" H 3000 4300 50 0000 C CNN
F 1 "1.375k" H 3050 4450 50 0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 2830 4300 50 0001 C CNN
F 3 "~" H 2900 4300 50 0001 C CNN
1 2900 4300
-1 0 0 1
$EndComp
$Comp
L schematic-rescue:C_Small-Device CT1
U 1 1 5D811566
P 3200 4300
F 0 "CT1" H 3050 4250 50 0000 C CNN
F 1 "10nF" H 3050 4400 50 0000 C CNN
F 2 "Capacitor_THT:C_Rect_L19.0mm_W11.0mm_P15.00mm_MKS4" H 3200 4300 50 0001 C CNN
F 3 "~" H 3200 4300 50 0001 C CNN
1 3200 4300
-1 0 0 1
$EndComp
Wire Wire Line
7700 4200 7700 4650
Wire Wire Line
6600 3000 7100 3000
$Comp
L schematic-rescue:D_Schottky-Device D1
U 1 1 5D81D350
P 5950 3200
F 0 "D1" H 5950 3416 50 0000 C CNN
F 1 "Schottky" H 5950 3325 50 0000 C CNN
F 2 "Diode_THT:D_5KPW_P7.62mm_Vertical_AnodeUp" H 5950 3200 50 0001 C CNN
F 3 "~" H 5950 3200 50 0001 C CNN
1 5950 3200
1 0 0 -1
$EndComp
$Comp
L schematic-rescue:R-Device R5
U 1 1 5D81D4BD
P 5950 3500
F 0 "R5" V 6050 3500 50 0000 C CNN
F 1 "1.415k" V 5834 3500 50 0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 5880 3500 50 0001 C CNN
F 3 "~" H 5950 3500 50 0001 C CNN
1 5950 3500
0 1 1 0
$EndComp
$Comp
L schematic-rescue:R-Device R4
U 1 1 5D81DE7D
P 5400 3750
F 0 "R4" H 5250 3750 50 0000 L CNN
F 1 "8.33k" H 5450 3750 50 0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 5330 3750 50 0001 C CNN
F 3 "~" H 5400 3750 50 0001 C CNN
1 5400 3750
1 0 0 -1
$EndComp
Wire Wire Line
5800 3500 5400 3500
Wire Wire Line
5800 3200 5400 3200
Wire Wire Line
5400 3200 5400 3500
Connection ~ 5400 3500
Wire Wire Line
5400 3600 5400 3500
$Comp
L schematic-rescue:R-Device R6
U 1 1 5D82B276
P 8150 3500
F 0 "R6" V 8250 3500 50 0000 C CNN
F 1 "15" V 8034 3500 50 0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 8080 3500 50 0001 C CNN
F 3 "~" H 8150 3500 50 0001 C CNN
1 8150 3500
0 1 1 0
$EndComp
Wire Wire Line
8800 4850 8750 4850
$Comp
L schematic-rescue:D_Schottky-Device D2
U 1 1 5D834BF9
P 9500 4350
F 0 "D2" V 9450 4200 50 0000 L CNN
F 1 "Schottky" V 9500 4000 50 0000 L CNN
F 2 "Diode_THT:D_5KPW_P7.62mm_Vertical_AnodeUp" H 9500 4350 50 0001 C CNN
F 3 "~" H 9500 4350 50 0001 C CNN
1 9500 4350
0 1 1 0
$EndComp
$Comp
L schematic-rescue:R-Device R7
U 1 1 5D837E2E
P 10800 4350
F 0 "R7" H 10650 4350 50 0000 L CNN
F 1 "5" H 10850 4350 50 0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 10730 4350 50 0001 C CNN
F 3 "~" H 10800 4350 50 0001 C CNN
1 10800 4350
1 0 0 -1
$EndComp
$Comp
L schematic-rescue:CP1_Small-Device C5
U 1 1 5D838F33
P 10400 4350
F 0 "C5" H 10250 4400 50 0000 L CNN
F 1 "9.4uF" H 10200 4300 50 0000 L CNN
F 2 "Capacitor_THT:CP_Radial_D8.0mm_P2.50mm" H 10400 4350 50 0001 C CNN
F 3 "~" H 10400 4350 50 0001 C CNN
1 10400 4350
1 0 0 -1
$EndComp
$Comp
L schematic-rescue:CP1_Small-Device C3
U 1 1 5D83903E
P 8450 4350
F 0 "C3" H 8300 4400 50 0000 L CNN
F 1 "330uF" H 8200 4300 50 0000 L CNN
F 2 "Capacitor_THT:CP_Radial_D16.0mm_P7.50mm" H 8450 4350 50 0001 C CNN
F 3 "~" H 8450 4350 50 0001 C CNN
1 8450 4350
1 0 0 -1
$EndComp
$Comp
L schematic-rescue:C_Small-Device C4
U 1 1 5D83A137
P 8750 4350
F 0 "C4" H 8650 4400 50 0000 L CNN
F 1 "1uF" H 8600 4300 50 0000 L CNN
F 2 "Capacitor_THT:CP_Radial_D5.0mm_P2.50mm" H 8750 4350 50 0001 C CNN
F 3 "~" H 8750 4350 50 0001 C CNN
1 8750 4350
1 0 0 -1
$EndComp
Wire Wire Line
9000 4550 9000 3500
Wire Wire Line
8300 3500 9000 3500
Wire Wire Line
9800 3800 9500 3800
Wire Wire Line
9500 3800 9500 4200
Wire Wire Line
9500 3800 9500 1450
Connection ~ 9500 3800
Wire Wire Line
9200 4850 9500 4850
Wire Wire Line
10800 4850 10800 4500
Wire Wire Line
10400 4450 10400 4850
Connection ~ 10400 4850
Wire Wire Line
10400 4850 10800 4850
Wire Wire Line
9500 4500 9500 4850
Connection ~ 9500 4850
Wire Wire Line
9500 4850 10400 4850
Wire Wire Line
10100 3800 10400 3800
Wire Wire Line
10800 3800 10800 4200
Wire Wire Line
10400 4250 10400 3800
Connection ~ 10400 3800
Wire Wire Line
10400 3800 10800 3800
Connection ~ 7400 1450
Wire Wire Line
7400 1450 9500 1450
Wire Wire Line
8450 4450 8450 4850
Connection ~ 8450 4850
Wire Wire Line
8450 4850 7400 4850
Wire Wire Line
8750 4450 8750 4850
Connection ~ 8750 4850
Wire Wire Line
8750 4850 8450 4850
Wire Wire Line
8750 4250 8750 3800
Wire Wire Line
8750 3800 8450 3800
Wire Wire Line
8450 3800 8450 4250
Wire Wire Line
7400 1450 7400 1800
$Comp
L schematic-rescue:C_Small-Device C1
U 1 1 5D80E6BB
P 2100 3850
F 0 "C1" H 2300 3850 50 0000 R CNN
F 1 "1uF" H 2000 3850 50 0000 R CNN
F 2 "Capacitor_THT:C_Rect_L11.5mm_W7.8mm_P10.00mm_MKT" H 2100 3850 50 0001 C CNN
F 3 "~" H 2100 3850 50 0001 C CNN
1 2100 3850
-1 0 0 1
$EndComp
Wire Wire Line
6900 1950 6900 1800
Wire Wire Line
6900 1800 7400 1800
Connection ~ 7400 1800
Wire Wire Line
7400 1800 7400 2800
Wire Wire Line
7400 4400 7400 4850
Wire Wire Line
7700 4650 6600 4650
Wire Wire Line
7400 3200 7400 3500
Wire Wire Line
8000 3500 7400 3500
Connection ~ 7400 3500
Wire Wire Line
7400 3500 7400 4000
Wire Wire Line
8750 3800 9500 3800
Connection ~ 8750 3800
$Comp
L schematic-rescue:R_POT-Device Rpot1
U 1 1 5D81E745
P 1300 3500
F 0 "Rpot1" H 1230 3546 50 0000 R CNN
F 1 "200" H 1230 3455 50 0000 R CNN
F 2 "Potentiometer_THT:Potentiometer_Bourns_3339P_Vertical" H 1300 3500 50 0001 C CNN
F 3 "~" H 1300 3500 50 0001 C CNN
1 1300 3500
1 0 0 -1
$EndComp
Wire Wire Line
1150 3200 1300 3200
Wire Wire Line
1450 3500 1500 3500
Wire Wire Line
1500 3500 1500 3300
Wire Wire Line
1500 3300 1300 3300
Wire Wire Line
1300 3300 1300 3350
Wire Wire Line
1300 3300 1300 3200
Connection ~ 1300 3300
Connection ~ 1300 3200
Wire Wire Line
1300 3200 1500 3200
Wire Wire Line
6900 2150 6900 2200
$Comp
L schematic-rescue:R-Device R2
U 1 1 5D95055A
P 1300 3900
F 0 "R2" V 1400 3900 50 0000 C CNN
F 1 "800" V 1184 3900 50 0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 1230 3900 50 0001 C CNN
F 3 "~" H 1300 3900 50 0001 C CNN
1 1300 3900
-1 0 0 1
$EndComp
Wire Wire Line
1300 3650 1300 3750
Wire Wire Line
1800 3200 2100 3200
Wire Wire Line
2100 3700 2100 3750
$Comp
L schematic-rescue:R_POT-Device Rf1
U 1 1 5D97698D
P 2100 3550
F 0 "Rf1" H 2030 3596 50 0000 R CNN
F 1 "500k" H 2030 3505 50 0000 R CNN
F 2 "Potentiometer_THT:Potentiometer_Bourns_3339P_Vertical" H 2100 3550 50 0001 C CNN
F 3 "~" H 2100 3550 50 0001 C CNN
1 2100 3550
1 0 0 -1
$EndComp
Wire Wire Line
2250 3550 2300 3550
Wire Wire Line
2300 3550 2300 3350
Wire Wire Line
2300 3350 2100 3350
Wire Wire Line
2100 3350 2100 3400
Wire Wire Line
2100 3200 2100 3350
Connection ~ 2100 3350
Wire Wire Line
2100 4000 2500 4000
$Comp
L schematic-rescue:TL494-Regulator_Controller U1
U 1 1 5D992892
P 3900 3400
F 0 "U1" H 3900 3550 50 0000 C CNN
F 1 "TL494" H 3900 3400 50 0000 C CNN
F 2 "TL494_:DIL16" H 3900 3400 50 0001 C CNN
F 3 "" H 3900 3400 50 0001 C CNN
1 3900 3400
1 0 0 -1
$EndComp
Wire Wire Line
5400 3500 4400 3500
Wire Wire Line
4400 3300 4500 3300
Wire Wire Line
4500 3200 4400 3200
Wire Wire Line
4500 3200 4500 2650
Wire Wire Line
3200 3400 3200 3100
Wire Wire Line
3400 3200 2100 3200
Connection ~ 2100 3200
Wire Wire Line
3400 3300 2500 3300
Wire Wire Line
2500 3300 2500 4000
Wire Wire Line
3400 3800 3200 3800
Wire Wire Line
3200 3800 3200 4200
Wire Wire Line
3400 3700 2900 3700
Wire Wire Line
2900 3700 2900 4150
Wire Wire Line
6600 3000 6600 3200
Wire Wire Line
6100 3200 6600 3200
Connection ~ 6600 3200
Wire Wire Line
6600 3200 6600 3500
Wire Wire Line
6100 3500 6600 3500
Connection ~ 6600 3500
Wire Wire Line
6600 3500 6600 4650
Wire Wire Line
3200 3400 3400 3400
Wire Wire Line
3900 2700 3900 2650
Wire Wire Line
3900 2650 4500 2650
Connection ~ 4500 2650
Wire Wire Line
4500 2650 4500 1450
Wire Wire Line
3150 3000 600 3000
Connection ~ 3150 2900
Wire Wire Line
3150 2900 3400 2900
Connection ~ 7400 4850
Wire Wire Line
6900 2200 3150 2200
Wire Wire Line
3150 2900 3150 3000
Wire Wire Line
3200 4400 3200 4850
Connection ~ 3200 4850
Wire Wire Line
2900 4450 2900 4850
Connection ~ 2900 4850
Wire Wire Line
600 4850 1300 4850
Wire Wire Line
1300 4050 1300 4850
Connection ~ 1300 4850
Wire Wire Line
1300 4850 2600 4850
Wire Wire Line
3400 3600 2700 3600
Wire Wire Line
2700 3600 2700 4850
Connection ~ 2700 4850
Wire Wire Line
2700 4850 2900 4850
Wire Wire Line
3400 3500 2600 3500
Wire Wire Line
2600 3500 2600 4850
Connection ~ 2600 4850
Wire Wire Line
2600 4850 2700 4850
Wire Wire Line
2900 4850 3200 4850
Wire Wire Line
4500 1450 7400 1450
Connection ~ 4500 1450
Wire Wire Line
700 1450 4500 1450
Wire Wire Line
3400 3000 3150 3000
Wire Wire Line
3400 3100 3200 3100
Wire Wire Line
3150 2200 3150 2900
Wire Wire Line
600 3000 600 4850
Connection ~ 3150 3000
Wire Wire Line
3200 4850 3900 4850
Connection ~ 3900 4850
Wire Wire Line
3900 4850 4500 4850
Wire Wire Line
3900 4000 3900 4850
Wire Wire Line
5400 3900 5400 4850
Connection ~ 5400 4850
Wire Wire Line
5400 4850 7400 4850
Connection ~ 4500 4850
Wire Wire Line
4500 4850 5400 4850
Wire Wire Line
4500 3300 4500 3600
Wire Wire Line
4400 3600 4500 3600
Connection ~ 4500 3600
Wire Wire Line
4500 3600 4500 4850
$EndSCHEMATC