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EESchema Schematic File Version 4
LIBS:MPPT_charger_20A-cache
EELAYER 26 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 2 6
Title "MPPT Charger 20A"
Date "2018-01-18"
Rev "0.10"
Comp "Libre Solar"
Comment1 "Author: Martin Jäger"
Comment2 "Website: http://libre.solar"
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L power:GND #PWR02
U 1 1 58A7DE0D
P 7900 5500
F 0 "#PWR02" H 7900 5250 50 0001 C CNN
F 1 "GND" H 7900 5350 50 0000 C CNN
F 2 "" H 7900 5500 50 0000 C CNN
F 3 "" H 7900 5500 50 0000 C CNN
1 7900 5500
1 0 0 -1
$EndComp
$Comp
L power:GND #PWR03
U 1 1 58A8409D
P 6700 3300
F 0 "#PWR03" H 6700 3050 50 0001 C CNN
F 1 "GND" H 6700 3150 50 0000 C CNN
F 2 "" H 6700 3300 50 0000 C CNN
F 3 "" H 6700 3300 50 0000 C CNN
1 6700 3300
1 0 0 -1
$EndComp
$Comp
L Project:C C10
U 1 1 58A85D67
P 9800 5100
F 0 "C10" H 9820 5170 50 0000 L CNN
F 1 "100n" H 9820 5030 50 0000 L CNN
F 2 "LibreSolar:C_0603_1608" H 9800 5100 50 0001 C CNN
F 3 "" H 9800 5100 50 0000 C CNN
F 4 "Murata" H 4600 1200 50 0001 C CNN "Manufacturer"
F 5 "GRM188R71H104KA93D" H 4600 1200 50 0001 C CNN "PartNumber"
1 9800 5100
1 0 0 -1
$EndComp
$Comp
L power:GND #PWR04
U 1 1 58A99690
P 4800 2700
F 0 "#PWR04" H 4800 2450 50 0001 C CNN
F 1 "GND" H 4800 2550 50 0000 C CNN
F 2 "" H 4800 2700 50 0000 C CNN
F 3 "" H 4800 2700 50 0000 C CNN
1 4800 2700
1 0 0 -1
$EndComp
$Comp
L Project:R R3
U 1 1 58A9A2AE
P 5700 2800
F 0 "R3" V 5630 2800 50 0000 C CNN
F 1 "3.3" V 5770 2800 50 0000 C CNN
F 2 "LibreSolar:R_0805_2012" H 5700 2800 50 0001 C CNN
F 3 "" H 5700 2800 50 0000 C CNN
F 4 "Yageo" H 150 300 50 0001 C CNN "Manufacturer"
F 5 "RC0805FR-073R3L" H 150 300 50 0001 C CNN "PartNumber"
1 5700 2800
0 1 1 0
$EndComp
$Comp
L Project:R R1
U 1 1 58A9AA64
P 5800 2100
F 0 "R1" V 5730 2100 50 0000 C CNN
F 1 "3.3" V 5870 2100 50 0000 C CNN
F 2 "LibreSolar:R_0805_2012" H 5800 2100 50 0001 C CNN
F 3 "" H 5800 2100 50 0000 C CNN
F 4 "Yageo" H 200 300 50 0001 C CNN "Manufacturer"
F 5 "RC0805FR-073R3L" H 200 300 50 0001 C CNN "PartNumber"
1 5800 2100
0 1 1 0
$EndComp
$Comp
L Project:R R10
U 1 1 58A9B6EE
P 9500 4900
F 0 "R10" V 9430 4900 50 0000 C CNN
F 1 "3.3" V 9570 4900 50 0000 C CNN
F 2 "LibreSolar:R_0805_2012" H 9500 4900 50 0001 C CNN
F 3 "" H 9500 4900 50 0000 C CNN
F 4 "Yageo" H 4575 1200 50 0001 C CNN "Manufacturer"
F 5 "RC0805FR-073R3L" H 4575 1200 50 0001 C CNN "PartNumber"
1 9500 4900
0 1 1 0
$EndComp
$Comp
L Project:R R9
U 1 1 58A9DC80
P 2700 4900
F 0 "R9" V 2630 4900 50 0000 C CNN
F 1 "56k" V 2770 4900 50 0000 C CNN
F 2 "LibreSolar:R_0603_1608" H 2700 4900 50 0001 C CNN
F 3 "" H 2700 4900 50 0000 C CNN
F 4 "Yageo" H 150 -50 50 0001 C CNN "Manufacturer"
F 5 "RC0603FR-0756KL" H 150 -50 50 0001 C CNN "PartNumber"
1 2700 4900
0 1 1 0
$EndComp
$Comp
L Project:R R12
U 1 1 58A9E677
P 3350 5100
F 0 "R12" V 3280 5100 50 0000 C CNN
F 1 "2.2k" V 3420 5100 50 0000 C CNN
F 2 "LibreSolar:R_0603_1608" H 3350 5100 50 0001 C CNN
F 3 "" H 3350 5100 50 0000 C CNN
F 4 "Yageo" H 200 0 50 0001 C CNN "Manufacturer"
F 5 "RC0603FR-072K2L" H 200 0 50 0001 C CNN "PartNumber"
1 3350 5100
0 1 1 0
$EndComp
$Comp
L Project:R R13
U 1 1 58A9EAD2
P 2200 5400
F 0 "R13" V 2130 5400 50 0000 C CNN
F 1 "2.2k" V 2270 5400 50 0000 C CNN
F 2 "LibreSolar:R_0603_1608" H 2200 5400 50 0001 C CNN
F 3 "" H 2200 5400 50 0000 C CNN
F 4 "Yageo" H 175 0 50 0001 C CNN "Manufacturer"
F 5 "RC0603FR-072K2L" H 175 0 50 0001 C CNN "PartNumber"
1 2200 5400
0 1 1 0
$EndComp
$Comp
L Project:R R17
U 1 1 58AA028C
P 1900 5900
F 0 "R17" V 1830 5900 50 0000 C CNN
F 1 "2m" V 1970 5900 50 0000 C CNN
F 2 "LibreSolar:R_Bourns_CRE2512" H 1900 5900 50 0001 C CNN
F 3 "" H 1900 5900 50 0000 C CNN
F 4 "Bourns" H 150 0 50 0001 C CNN "Manufacturer"
F 5 "CRE2512-FZ-R002E-3" H 150 0 50 0001 C CNN "PartNumber"
1 1900 5900
0 -1 1 0
$EndComp
$Comp
L Project:R R16
U 1 1 58AA0F0C
P 2600 5600
F 0 "R16" V 2530 5600 50 0000 C CNN
F 1 "10k" V 2670 5600 50 0000 C CNN
F 2 "LibreSolar:R_0603_1608" H 2600 5600 50 0001 C CNN
F 3 "" H 2600 5600 50 0000 C CNN
F 4 "Yageo" H 150 -50 50 0001 C CNN "Manufacturer"
F 5 "RC0603FR-0710KL" H 150 -50 50 0001 C CNN "PartNumber"
1 2600 5600
1 0 0 1
$EndComp
$Comp
L Project:R R6
U 1 1 58AA6BF1
P 8900 3200
F 0 "R6" V 8830 3200 50 0000 C CNN
F 1 "2m" V 8970 3200 50 0000 C CNN
F 2 "LibreSolar:R_Bourns_CRE2512" H 8900 3200 50 0001 C CNN
F 3 "" H 8900 3200 50 0000 C CNN
F 4 "Bourns" H 400 150 50 0001 C CNN "Manufacturer"
F 5 "CRE2512-FZ-R002E-3" H 400 150 50 0001 C CNN "PartNumber"
1 8900 3200
0 -1 1 0
$EndComp
$Comp
L Project:C C8
U 1 1 58AC52BA
P 2600 2100
F 0 "C8" H 2620 2170 50 0000 L CNN
F 1 "1u" H 2620 2030 50 0000 L CNN
F 2 "LibreSolar:C_0805_2012" H 2600 2100 50 0001 C CNN
F 3 "" H 2600 2100 50 0000 C CNN
F 4 "Murata" H 500 350 50 0001 C CNN "Manufacturer"
F 5 "GRJ21BC72A105KE11L" H 500 350 50 0001 C CNN "PartNumber"
F 6 "100V, X7S" H 0 0 60 0001 C CNN "Remarks"
1 2600 2100
1 0 0 -1
$EndComp
$Comp
L Project:C C4
U 1 1 58AC5948
P 4700 2100
F 0 "C4" H 4720 2170 50 0000 L CNN
F 1 "4.7u" H 4720 2030 50 0000 L CNN
F 2 "LibreSolar:C_1210_3225" H 4700 2100 50 0001 C CNN
F 3 "" H 4700 2100 50 0000 C CNN
F 4 "Murata" H 100 300 50 0001 C CNN "Manufacturer"
F 5 "GRJ32DC72A475KE11L" H 100 300 50 0001 C CNN "PartNumber"
F 6 "100V, X7S" H 0 0 60 0001 C CNN "Remarks"
1 4700 2100
1 0 0 -1
$EndComp
$Comp
L Project:C C6
U 1 1 58AC7446
P 7100 2950
F 0 "C6" H 7125 3025 50 0000 L CNN
F 1 "1n" H 7125 2875 50 0000 L CNN
F 2 "LibreSolar:C_0603_1608" H 7100 2750 50 0001 C CNN
F 3 "" H 7125 3025 50 0000 C CNN
F 4 "NP0/C0G" H 7200 2950 50 0000 L CNN "Remarks"
F 5 "Murata" H 200 150 50 0001 C CNN "Manufacturer"
F 6 "GRM1885C2A102JA01D" H 200 150 50 0001 C CNN "PartNumber"
1 7100 2950
1 0 0 -1
$EndComp
$Comp
L Project:R R4
U 1 1 58AC810E
P 7100 2650
F 0 "R4" V 7030 2650 50 0000 C CNN
F 1 "2.2" V 7170 2650 50 0000 C CNN
F 2 "LibreSolar:R_1206_3216" H 7100 2650 50 0001 C CNN
F 3 "" H 7100 2650 50 0000 C CNN
F 4 "Yageo" H 300 350 50 0001 C CNN "Manufacturer"
F 5 "RC1206FR-072R2L" H 300 350 50 0001 C CNN "PartNumber"
1 7100 2650
1 0 0 1
$EndComp
$Comp
L Device:L_Core_Iron L1
U 1 1 58ACD441
P 7600 2400
F 0 "L1" V 7725 2400 50 0000 C CNN
F 1 "22uH" V 7525 2400 50 0000 C CNN
F 2 "LibreSolar:L-FERYSTER-DTMSS-27" V 7800 2400 50 0001 C CNN
F 3 "" H 7600 2400 50 0001 C CNN
F 4 "Feryster" H 200 350 50 0001 C CNN "Manufacturer"
F 5 "DTMSS-27/0,022/30-H" H 200 350 50 0001 C CNN "PartNumber"
F 6 "Feryster" H 7600 2400 60 0001 C CNN "Supplier"
1 7600 2400
0 -1 -1 0
$EndComp
$Comp
L Transistor_BJT:BC817 T1
U 1 1 58ACF046
P 2900 5400
F 0 "T1" H 3100 5475 50 0000 L CNN
F 1 "MMBT3904" H 3100 5400 50 0000 L CNN
F 2 "LibreSolar:SOT-23" H 3100 5325 50 0001 L CIN
F 3 "" H 2900 5400 50 0001 L CNN
F 4 "Diodes Inc." H 150 0 50 0001 C CNN "Manufacturer"
F 5 "MMBT3904-7-F" H 150 0 50 0001 C CNN "PartNumber"
1 2900 5400
1 0 0 -1
$EndComp
$Comp
L Project:C C12
U 1 1 58AD9379
P 7900 5200
F 0 "C12" H 7920 5270 50 0000 L CNN
F 1 "2.2u" H 7920 5130 50 0000 L CNN
F 2 "LibreSolar:C_0603_1608" H 7900 5200 50 0001 C CNN
F 3 "" H 7900 5200 50 0000 C CNN
F 4 "Murata" H 4700 1150 50 0001 C CNN "Manufacturer"
F 5 "GRM188R61E225KA12D" H 0 0 60 0001 C CNN "PartNumber"
F 6 "25V, X5R" H 0 0 60 0001 C CNN "Remarks"
1 7900 5200
1 0 0 -1
$EndComp
$Comp
L Project:Screw_Terminal_1x02 J3
U 1 1 58A7CE11
P 10000 2800
F 0 "J3" H 10000 3050 50 0000 C TNN
F 1 "BAT" H 10100 2600 50 0000 R TNN
F 2 "LibreSolar:Phoenix_Contact_MKDS_5-2-952" H 10000 2575 50 0001 C CNN
F 3 "" H 9975 2800 50 0001 C CNN
F 4 "Phoenix Contact" H 0 0 60 0001 C CNN "Manufacturer"
F 5 "1714971" H 0 0 60 0001 C CNN "PartNumber"
1 10000 2800
-1 0 0 1
$EndComp
$Comp
L Project:Screw_Terminal_1x02 J1
U 1 1 58A7E35A
P 1650 2100
AR Path="/58A7E35A" Ref="J1" Part="1"
AR Path="/58A68DC9/58A7E35A" Ref="J1" Part="1"
F 0 "J1" H 1650 2350 50 0000 C TNN
F 1 "SOLAR" H 1600 1900 50 0000 L TNN
F 2 "LibreSolar:Phoenix_Contact_MKDS_5-2-952" H 1650 1875 50 0001 C CNN
F 3 "" H 1625 2100 50 0001 C CNN
F 4 "Phoenix Contact" H 1650 2100 60 0001 C CNN "Manufacturer"
F 5 "1714971" H 1650 2100 60 0001 C CNN "PartNumber"
1 1650 2100
1 0 0 1
$EndComp
$Comp
L Project:Screw_Terminal_1x02 J2
U 1 1 58A7FE07
P 6300 5800
F 0 "J2" H 6300 6050 50 0000 C TNN
F 1 "LOAD" H 6300 5600 50 0000 C TNN
F 2 "LibreSolar:Phoenix_Contact_MKDS_5-2-952" H 6300 5575 50 0001 C CNN
F 3 "" H 6275 5800 50 0001 C CNN
F 4 "Phoenix Contact" H -3600 400 60 0001 C CNN "Manufacturer"
F 5 "1714971" H -3600 400 60 0001 C CNN "PartNumber"
1 6300 5800
-1 0 0 -1
$EndComp
$Comp
L Device:CP_Small C2
U 1 1 58A857B0
P 4000 2100
F 0 "C2" H 4025 2175 50 0000 L CNN
F 1 "1000u" H 4025 2025 50 0000 L CNN
F 2 "Capacitor_THT:CP_Radial_D16.0mm_P7.50mm" H 4025 1875 50 0001 L CNN
F 3 "" H 4025 2175 50 0000 C CNN
F 4 "United Chemi-Con" H 600 300 50 0001 C CNN "Manufacturer"
F 5 "EKYB630ELL102ML25S" H 600 300 50 0001 C CNN "PartNumber"
F 6 "63V, 2.74A, 16x25" H 0 0 60 0001 C CNN "Remarks"
1 4000 2100
1 0 0 -1
$EndComp
$Comp
L Device:CP_Small C5
U 1 1 58A85EB1
P 8000 2800
F 0 "C5" H 8020 2870 50 0000 L CNN
F 1 "820u" H 8020 2720 50 0000 L CNN
F 2 "Capacitor_THT:CP_Radial_D10.0mm_P5.00mm" H 8000 2800 50 0001 C CNN
F 3 "" H 8000 2800 50 0000 C CNN
F 4 "Panasonic" H 4200 1000 50 0001 C CNN "Manufacturer"
F 5 "EEU-FR1V821L" H 4200 1000 50 0001 C CNN "PartNumber"
F 6 "35V, 2.47A" H 0 0 60 0001 C CNN "Remarks"
1 8000 2800
1 0 0 -1
$EndComp
$Comp
L Project:C C3
U 1 1 58A8683F
P 4400 2100
F 0 "C3" H 4420 2170 50 0000 L CNN
F 1 "4.7u" H 4420 2030 50 0000 L CNN
F 2 "LibreSolar:C_1210_3225" H 4400 2100 50 0001 C CNN
F 3 "" H 4400 2100 50 0000 C CNN
F 4 "Murata" H 200 300 50 0001 C CNN "Manufacturer"
F 5 "GRJ32DC72A475KE11L" H 200 300 50 0001 C CNN "PartNumber"
F 6 "100V, X7S" H 0 0 60 0001 C CNN "Remarks"
F 7 "" H 0 0 60 0001 C CNN "Alternative"
1 4400 2100
1 0 0 -1
$EndComp
$Comp
L Project:D D1
U 1 1 58A87233
P 4200 3000
F 0 "D1" H 4200 3100 50 0000 C CNN
F 1 "1N4148" H 4200 2900 50 0000 C CNN
F 2 "LibreSolar:D_SOD-123" V 4200 3000 50 0001 C CNN
F 3 "" V 4200 3000 50 0000 C CNN
F 4 "Diodes Inc." H 150 200 50 0001 C CNN "Manufacturer"
F 5 "1N4148W-7-F" H 150 200 50 0001 C CNN "PartNumber"
1 4200 3000
1 0 0 -1
$EndComp
$Comp
L Device:Fuse_Small F1
U 1 1 58AA3600
P 8900 2400
AR Path="/58AA3600" Ref="F1" Part="1"
AR Path="/58A68DC9/58AA3600" Ref="F1" Part="1"
F 0 "F1" H 8900 2475 50 0000 C CNN
F 1 "25A" H 8900 2325 50 0000 C CNN
F 2 "LibreSolar:KEYSTONE-FUSE-3557-2" H 8900 2400 50 0001 C CNN
F 3 "" H 8900 2400 50 0000 C CNN
F 4 "Keystone" H -100 350 50 0001 C CNN "Manufacturer"
F 5 "3557-2" H -100 350 50 0001 C CNN "PartNumber"
1 8900 2400
1 0 0 -1
$EndComp
$Comp
L Project:+10V #PWR05
U 1 1 58BE9B73
P 2500 4800
F 0 "#PWR05" H 2500 4650 50 0001 C CNN
F 1 "+10V" H 2500 4940 50 0000 C CNN
F 2 "" H 2500 4800 50 0000 C CNN
F 3 "" H 2500 4800 50 0000 C CNN
1 2500 4800
1 0 0 -1
$EndComp
$Comp
L Project:+10V #PWR06
U 1 1 58BEA73B
P 7900 4900
F 0 "#PWR06" H 7900 4750 50 0001 C CNN
F 1 "+10V" H 7900 5040 50 0000 C CNN
F 2 "" H 7900 4900 50 0000 C CNN
F 3 "" H 7900 4900 50 0000 C CNN
1 7900 4900
1 0 0 -1
$EndComp
$Comp
L Project:R R2
U 1 1 58BEC59A
P 3400 2800
F 0 "R2" V 3330 2800 50 0000 C CNN
F 1 "1M" V 3470 2800 50 0000 C CNN
F 2 "LibreSolar:R_0603_1608" H 3400 2800 50 0001 C CNN
F 3 "" H 3400 2800 50 0000 C CNN
F 4 "Yageo" H 200 250 50 0001 C CNN "Manufacturer"
F 5 "RC0603FR-071ML" H 200 250 50 0001 C CNN "PartNumber"
1 3400 2800
1 0 0 -1
$EndComp
$Comp
L Project:LM5107 U1
U 1 1 58C054FE
P 8900 5200
F 0 "U1" H 8900 5550 50 0000 C CNN
F 1 "LM5107" H 8900 4850 50 0000 C CNN
F 2 "LibreSolar:SOIC-8_3.9x4.9mm_Pitch1.27mm" H 8950 5200 60 0001 C CNN
F 3 "" H 8950 5200 60 0001 C CNN
F 4 "Texas Instruments" H 4700 1150 50 0001 C CNN "Manufacturer"
F 5 "LM5107MAX/NOPB" H 4700 1150 50 0001 C CNN "PartNumber"
1 8900 5200
1 0 0 -1
$EndComp
$Comp
L Project:Q_NMOS Q1
U 1 1 58C3E2A8
P 6200 2100
F 0 "Q1" H 6400 2150 50 0000 L CNN
F 1 "CSD18540Q5B" H 6400 2050 50 0000 L CNN
F 2 "LibreSolar:5X6_MOSFET" H 6400 2200 50 0001 C CNN
F 3 "" H 6200 2100 50 0001 C CNN
F 4 "Texas Instruments" H 200 300 50 0001 C CNN "Manufacturer"
F 5 "CSD18540Q5BT" H 200 300 50 0001 C CNN "PartNumber"
1 6200 2100
1 0 0 -1
$EndComp
$Comp
L Project:Q_NMOS Q4
U 1 1 58C40039
P 6200 2800
F 0 "Q4" H 6400 2850 50 0000 L CNN
F 1 "CSD18540Q5B" H 6400 2750 50 0000 L CNN
F 2 "LibreSolar:5X6_MOSFET" H 6400 2900 50 0001 C CNN
F 3 "" H 6200 2800 50 0001 C CNN
F 4 "Texas Instruments" H 200 300 50 0001 C CNN "Manufacturer"
F 5 "CSD18540Q5BT" H 200 300 50 0001 C CNN "PartNumber"
1 6200 2800
1 0 0 -1
$EndComp
$Comp
L Project:Q_NMOS Q2
U 1 1 58C41D81
P 3000 2700
AR Path="/58C41D81" Ref="Q2" Part="1"
AR Path="/58A68DC9/58C41D81" Ref="Q2" Part="1"
F 0 "Q2" H 3200 2750 50 0000 L CNN
F 1 "CSD18540Q5B" H 3200 2650 50 0000 L CNN
F 2 "LibreSolar:5X6_MOSFET" H 3200 2800 50 0001 C CNN
F 3 "" H 3000 2700 50 0001 C CNN
F 4 "Texas Instruments" H 400 250 50 0001 C CNN "Manufacturer"
F 5 "CSD18540Q5BT" H 400 250 50 0001 C CNN "PartNumber"
1 3000 2700
0 -1 -1 0
$EndComp
$Comp
L Project:Q_NMOS Q3
U 1 1 58C43871
P 3700 5800
F 0 "Q3" H 3900 5850 50 0000 L CNN
F 1 "CSD18540Q5B" H 3900 5750 50 0000 L CNN
F 2 "LibreSolar:5X6_MOSFET" H 3900 5900 50 0001 C CNN
F 3 "" H 3700 5800 50 0001 C CNN
F 4 "Texas Instruments" H 150 0 50 0001 C CNN "Manufacturer"
F 5 "CSD18540Q5BT" H 150 0 50 0001 C CNN "PartNumber"
1 3700 5800
0 1 1 0
$EndComp
Text Notes 1450 2650 0 50 ~ 0
Solar Panel\nVoltage: 16-55 V
Text Notes 6600 1450 0 100 ~ 0
DC/DC power stage
Text Notes 3000 4500 0 100 ~ 0
Load output
Text Notes 8400 4500 0 100 ~ 0
MOSFET driver
Text Notes 3400 4900 0 50 ~ 0
Alternative: 330R at MOSFET gate\n--> 10.4/330 = 31 mA max
Text Notes 5100 7600 0 50 ~ 0
If not stated otherwise, all MLCC 50V X7R
Text Label 5000 5900 2 50 ~ 0
LOAD-
Text Notes 5975 6175 0 50 ~ 0
MKDS_5/2-9,52
Text Notes 1300 1700 0 50 ~ 0
MKDS_5/2-9,52
Text Notes 9850 3150 0 50 ~ 0
MKDS_5/2-9,52
Text HLabel 8500 5100 0 50 Input ~ 0
PWM_HS
Text HLabel 8500 5200 0 50 Input ~ 0
PWM_LS
Text Label 9600 5400 2 50 ~ 0
LS_DRV
Text Label 5350 2100 0 50 ~ 0
HS_DRV
Text Label 9600 5200 2 50 ~ 0
HS_DRV
Text Label 5300 2800 0 50 ~ 0
LS_DRV
Text Label 9600 5300 2 50 ~ 0
SW_NODE
Text HLabel 1950 5400 0 50 Input ~ 0
~LOAD_EN
Text Label 6550 2400 0 50 ~ 0
SW_NODE
Text Label 1950 2200 0 50 ~ 0
SOLAR-
Text Label 1950 2000 0 50 ~ 0
SOLAR+
Text HLabel 8600 2300 1 50 Output ~ 0
DCDC_OUT
Text HLabel 5400 1600 1 50 Output ~ 0
DCDC_IN
Text HLabel 5100 5500 0 50 Input ~ 0
DCDC_OUT
Text HLabel 9100 3300 3 50 Output ~ 0
BAT-
Text HLabel 2100 6000 3 50 Output ~ 0
LOAD-SW
Text HLabel 1700 5900 0 50 Input ~ 0
BAT-
Text HLabel 8700 3300 3 50 Output ~ 0
DCDC-
Text Label 9100 2400 0 50 ~ 0
BAT+
$Comp
L Device:CP_Small C1
U 1 1 59108F15
P 3600 2100
F 0 "C1" H 3625 2175 50 0000 L CNN
F 1 "1000u" H 3625 2025 50 0000 L CNN
F 2 "Capacitor_THT:CP_Radial_D16.0mm_P7.50mm" H 3625 1875 50 0001 L CNN
F 3 "" H 3625 2175 50 0000 C CNN
F 4 "United Chemi-Con" H 200 300 50 0001 C CNN "Manufacturer"
F 5 "EKYB630ELL102ML25S" H 200 300 50 0001 C CNN "PartNumber"
F 6 "63V, 2.74A, 16x25" H 0 0 60 0001 C CNN "Remarks"
1 3600 2100
1 0 0 -1
$EndComp
Wire Wire Line
7900 4900 7900 5000
Wire Wire Line
8600 5000 7900 5000
Wire Wire Line
2500 4900 2600 4900
Wire Wire Line
9000 2400 9400 2400
Wire Wire Line
9000 3200 9100 3200
Wire Wire Line
1700 5900 1800 5900
Wire Wire Line
3000 5900 3000 5600
Wire Wire Line
2600 5900 2600 5700
Wire Wire Line
2600 2000 2600 1700
Wire Wire Line
7750 2400 8000 2400
Wire Wire Line
8600 2400 8600 2300
Wire Wire Line
8600 5400 7900 5400
Wire Wire Line
7900 5300 7900 5400
Wire Wire Line
6700 3300 6700 3200
Wire Wire Line
4700 2600 4700 2200
Wire Wire Line
4000 2600 4000 2200
Wire Wire Line
4400 2600 4400 2200
Wire Wire Line
4800 2600 4800 2700
Wire Wire Line
9400 4900 9300 4900
Wire Wire Line
9300 4900 9300 5000
Wire Wire Line
9300 5000 9200 5000
Wire Wire Line
9200 5200 9600 5200
Wire Wire Line
5700 2100 5350 2100
Wire Wire Line
9200 5400 9600 5400
Wire Wire Line
5300 2800 5600 2800
Wire Wire Line
9600 4900 9800 4900
Wire Wire Line
9800 4900 9800 5000
Wire Wire Line
3000 4900 3000 5100
Wire Wire Line
3000 5100 3250 5100
Wire Wire Line
2800 4900 3000 4900
Wire Wire Line
2300 5400 2600 5400
Wire Wire Line
2600 5400 2600 5500
Wire Wire Line
2600 2600 2600 2200
Wire Wire Line
9800 5300 9800 5200
Wire Wire Line
8600 5100 8500 5100
Wire Wire Line
8600 5200 8500 5200
Wire Wire Line
1950 5400 2100 5400
Wire Wire Line
2300 1700 2300 2000
Wire Wire Line
2300 2000 1850 2000
Wire Wire Line
1850 2200 2300 2200
Wire Wire Line
2300 2200 2300 2600
Wire Wire Line
9200 5300 9800 5300
Wire Wire Line
2500 4800 2500 4900
Wire Wire Line
2300 1700 2600 1700
Wire Wire Line
5900 2100 6000 2100
Wire Wire Line
4700 1700 4700 2000
Wire Wire Line
4400 2000 4400 1700
Wire Wire Line
4000 2000 4000 1700
Wire Wire Line
3400 2700 3400 2600
Wire Wire Line
3400 2900 3400 3000
Wire Wire Line
6300 2400 7100 2400
Wire Wire Line
6100 5700 6000 5700
Wire Wire Line
9700 2400 9700 2700
Wire Wire Line
9700 2900 9800 2900
Wire Wire Line
9700 2700 9800 2700
Wire Wire Line
3450 5100 3700 5100
Wire Wire Line
6300 1700 6300 1900
Wire Wire Line
5800 2800 5900 2800
Wire Wire Line
5900 3000 5900 2800
Wire Wire Line
4300 3000 5900 3000
Wire Wire Line
6300 2300 6300 2400
Wire Wire Line
6300 3200 6300 3000
Wire Wire Line
2300 2600 2600 2600
Wire Wire Line
3200 2600 3400 2600
Wire Wire Line
3000 2900 3000 3000
Wire Wire Line
3000 3000 3400 3000
Wire Wire Line
3900 5900 4100 5900
Wire Wire Line
2000 5900 2100 5900
Wire Wire Line
3700 5100 3700 5300
Wire Wire Line
5400 1700 5400 1600
Connection ~ 7900 5000
Connection ~ 3000 5900
Connection ~ 2600 5900
Connection ~ 2600 1700
Connection ~ 8600 2400
Connection ~ 7900 5400
Connection ~ 6700 3200
Connection ~ 4000 2600
Connection ~ 4700 2600
Connection ~ 4400 2600
Connection ~ 3400 2600
Connection ~ 3400 3000
Connection ~ 3000 5100
Connection ~ 2600 5400
Connection ~ 2600 2600
Connection ~ 4700 1700
Connection ~ 4400 1700
Connection ~ 4000 1700
Connection ~ 5900 2800
Connection ~ 6300 2400
Connection ~ 5400 1700
Wire Wire Line
9700 3200 9700 2900
Wire Wire Line
2100 6000 2100 5900
Connection ~ 2100 5900
Wire Wire Line
8700 3200 8700 3300
Connection ~ 8700 3200
Wire Wire Line
9100 3300 9100 3200
Connection ~ 9100 3200
Wire Wire Line
3600 2000 3600 1700
Connection ~ 3600 1700
Wire Wire Line
3600 2200 3600 2600
Connection ~ 3600 2600
Wire Wire Line
8000 2700 8000 2400
Connection ~ 8000 2400
Wire Wire Line
8000 2900 8000 3200
Connection ~ 8000 3200
Wire Wire Line
6300 3200 6700 3200
Wire Wire Line
7100 2400 7100 2550
Connection ~ 7100 2400
Wire Wire Line
7100 3050 7100 3200
Connection ~ 7100 3200
Wire Wire Line
7100 2750 7100 2850
$Comp
L Device:D_Zener_Small D5
U 1 1 5A2D4B0C
P 5200 5700
F 0 "D5" V 5154 5768 50 0000 L CNN
F 1 "SMBJ36A" V 5245 5768 50 0000 L CNN
F 2 "LibreSolar:D_SMB" V 5200 5700 50 0001 C CNN
F 3 "https://en.wikipedia.org/wiki/Zener_diode" V 5200 5700 50 0001 C CNN
F 4 "Bourns" H 5200 5700 60 0001 C CNN "Manufacturer"
F 5 "SMBJ36A" H 5200 5700 60 0001 C CNN "PartNumber"
1 5200 5700
0 1 1 0
$EndComp
Wire Wire Line
6000 5700 6000 5500
Wire Wire Line
5100 5500 5200 5500
Wire Wire Line
5200 5600 5200 5500
Connection ~ 5200 5500
Wire Wire Line
5200 5800 5200 5900
Connection ~ 5200 5900
$Comp
L Project:C C7
U 1 1 5A2E653B
P 9400 2800
F 0 "C7" H 9420 2870 50 0000 L CNN
F 1 "1u" H 9420 2730 50 0000 L CNN
F 2 "LibreSolar:C_0805_2012" H 9400 2800 50 0001 C CNN
F 3 "" H 9400 2800 50 0000 C CNN
F 4 "Murata" H 7300 1050 50 0001 C CNN "Manufacturer"
F 5 "GRJ21BC72A105KE11L" H 7300 1050 50 0001 C CNN "PartNumber"
F 6 "100V, X7S" H 0 0 60 0001 C CNN "Remarks"
1 9400 2800
1 0 0 -1
$EndComp
Wire Wire Line
9400 2700 9400 2400
Connection ~ 9400 2400
Wire Wire Line
9400 2900 9400 3200
Connection ~ 9400 3200
$Comp
L Project:C C27
U 1 1 5A314523
P 5700 5700
F 0 "C27" H 5720 5770 50 0000 L CNN
F 1 "1u" H 5720 5630 50 0000 L CNN
F 2 "LibreSolar:C_0805_2012" H 5700 5700 50 0001 C CNN
F 3 "" H 5700 5700 50 0000 C CNN
F 4 "Murata" H 3600 3950 50 0001 C CNN "Manufacturer"
F 5 "GRJ21BC72A105KE11L" H 3600 3950 50 0001 C CNN "PartNumber"
F 6 "100V, X7S" H 0 0 60 0001 C CNN "Remarks"
1 5700 5700
1 0 0 -1
$EndComp
Wire Wire Line
5700 5600 5700 5500
Connection ~ 5700 5500
Wire Wire Line
5700 5800 5700 5900
Connection ~ 5700 5900
$Comp
L Project:C C28
U 1 1 5A336B6E
P 4100 5600
F 0 "C28" H 4120 5670 50 0000 L CNN
F 1 "10n" H 4120 5530 50 0000 L CNN
F 2 "LibreSolar:C_0603_1608" H 4100 5600 50 0001 C CNN
F 3 "" H 4100 5600 50 0000 C CNN
F 4 "Murata" H 2000 3850 50 0001 C CNN "Manufacturer"
F 5 "GRM188R71H103KA01J" H 2000 3850 50 0001 C CNN "PartNumber"
1 4100 5600
1 0 0 -1
$EndComp
Wire Wire Line
4100 5500 4100 5300
Wire Wire Line
4100 5300 3700 5300
Connection ~ 3700 5300
Wire Wire Line
4100 5700 4100 5900
Connection ~ 4100 5900
Wire Wire Line
7900 5000 7900 5100
Wire Wire Line
3000 5900 3500 5900
Wire Wire Line
2600 5900 3000 5900
Wire Wire Line
2600 1700 3600 1700
Wire Wire Line
8600 2400 8800 2400
Wire Wire Line
7900 5400 7900 5500
Wire Wire Line
6700 3200 7100 3200
Wire Wire Line
4000 2600 4400 2600
Wire Wire Line
4700 2600 4800 2600
Wire Wire Line
4400 2600 4700 2600
Wire Wire Line
3400 2600 3600 2600
Wire Wire Line
3400 3000 4100 3000
Wire Wire Line
3000 5100 3000 5200
Wire Wire Line
2600 5400 2700 5400
Wire Wire Line
2600 2600 2800 2600
Wire Wire Line
4700 1700 5400 1700
Wire Wire Line
4400 1700 4700 1700
Wire Wire Line
4000 1700 4400 1700
Wire Wire Line
5900 2800 6000 2800
Wire Wire Line
6300 2400 6300 2600
Wire Wire Line
5400 1700 6300 1700
Wire Wire Line
2100 5900 2600 5900
Wire Wire Line
8700 3200 8800 3200
Wire Wire Line
9100 3200 9400 3200
Wire Wire Line
3600 1700 4000 1700
Wire Wire Line
3600 2600 4000 2600
Wire Wire Line
8000 2400 8600 2400
Wire Wire Line
8000 3200 8700 3200
Wire Wire Line
7100 2400 7450 2400
Wire Wire Line
7100 3200 8000 3200
Wire Wire Line
5200 5500 5700 5500
Wire Wire Line
5200 5900 5700 5900
Wire Wire Line
9400 2400 9700 2400
Wire Wire Line
9400 3200 9700 3200
Wire Wire Line
5700 5500 6000 5500
Wire Wire Line
5700 5900 6100 5900
Wire Wire Line
3700 5300 3700 5600
Wire Wire Line
4100 5900 5200 5900
Text Notes 2250 1200 0 50 ~ 0
typisch: 1-10 nF + 10 uF
$EndSCHEMATC