EESchema Schematic File Version 2
LIBS:power
LIBS:device
LIBS:transistors
LIBS:conn
LIBS:linear
LIBS:regul
LIBS:74xx
LIBS:cmos4000
LIBS:adc-dac
LIBS:memory
LIBS:xilinx
LIBS:microcontrollers
LIBS:dsp
LIBS:microchip
LIBS:analog_switches
LIBS:motorola
LIBS:texas
LIBS:intel
LIBS:audio
LIBS:interface
LIBS:digital-audio
LIBS:philips
LIBS:display
LIBS:cypress
LIBS:siliconi
LIBS:opto
LIBS:atmel
LIBS:contrib
LIBS:valves
LIBS:stm32
LIBS:bytewerk-drivers
LIBS:bytewerk-opamp
LIBS:bytewerk-diodes
LIBS:SolarLader-cache
EELAYER 25 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 3 3
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L INDUCTOR L302
U 1 1 575B1308
P 5500 2650
F 0 "L302" V 5450 2650 50  0000 C CNN
F 1 "1mH" V 5600 2650 50  0000 C CNN
F 2 "PowerInductors:CustomCore_27x20.5mm" H 5500 2650 50  0001 C CNN
F 3 "" H 5500 2650 50  0000 C CNN
	1    5500 2650
	0    1    1    0   
$EndComp
Wire Wire Line
	4950 3250 4950 3450
Wire Wire Line
	5050 3450 5050 3250
Wire Wire Line
	5000 2450 5000 2850
Wire Wire Line
	4150 2650 5200 2650
$Comp
L R R302
U 1 1 575B14F1
P 5250 3900
F 0 "R302" V 5330 3900 50  0000 C CNN
F 1 "R010" V 5250 3900 50  0000 C CNN
F 2 "Resistors_SMD:R_1206_HandSoldering" V 5180 3900 50  0001 C CNN
F 3 "" H 5250 3900 50  0000 C CNN
	1    5250 3900
	0    1    1    0   
$EndComp
Wire Wire Line
	5000 3450 5000 3950
$Comp
L GND #PWR025
U 1 1 575B1572
P 5000 3950
F 0 "#PWR025" H 5000 3700 50  0001 C CNN
F 1 "GND" H 5000 3800 50  0000 C CNN
F 2 "" H 5000 3950 50  0000 C CNN
F 3 "" H 5000 3950 50  0000 C CNN
	1    5000 3950
	1    0    0    -1  
$EndComp
$Comp
L CP C304
U 1 1 575B159B
P 5950 3150
F 0 "C304" H 5975 3250 50  0000 L CNN
F 1 "470uF" H 5975 3050 50  0000 L CNN
F 2 "Capacitors_Elko_ThroughHole:Elko_vert_25x12.5mm_RM5" H 5988 3000 50  0001 C CNN
F 3 "" H 5950 3150 50  0000 C CNN
	1    5950 3150
	1    0    0    -1  
$EndComp
Wire Wire Line
	5950 3300 5950 4350
Connection ~ 5000 3900
Wire Wire Line
	5950 3000 5950 2650
Text HLabel 6800 3900 2    60   Output ~ 0
Bat-
Connection ~ 5950 2650
Text HLabel 6800 2650 2    60   Output ~ 0
Bat+
Connection ~ 5950 3900
$Comp
L Q_NMOS_GDS Q302
U 1 1 575B16B6
P 4900 2250
F 0 "Q302" H 5200 2300 50  0000 R CNN
F 1 "Q_NMOS_GDS" H 5550 2200 50  0000 R CNN
F 2 "SMD_Packages:DPAK-2" H 5100 2350 50  0001 C CNN
F 3 "" H 4900 2250 50  0000 C CNN
	1    4900 2250
	1    0    0    -1  
$EndComp
Connection ~ 5000 2650
$Comp
L INDUCTOR L301
U 1 1 575B1760
P 3650 1100
F 0 "L301" V 3600 1100 50  0000 C CNN
F 1 "100uH" V 3750 1100 50  0000 C CNN
F 2 "PowerInductors:LPV2023-101KL" H 3650 1100 50  0001 C CNN
F 3 "" H 3650 1100 50  0000 C CNN
	1    3650 1100
	0    1    1    0   
$EndComp
$Comp
L CP C303
U 1 1 575B17F1
P 4150 1350
F 0 "C303" H 4175 1450 50  0000 L CNN
F 1 "100uF" H 4175 1250 50  0000 L CNN
F 2 "Capacitors_ThroughHole:C_Radial_D10_L13_P5" H 4188 1200 50  0001 C CNN
F 3 "" H 4150 1350 50  0000 C CNN
	1    4150 1350
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR026
U 1 1 575B1833
P 4150 1600
F 0 "#PWR026" H 4150 1350 50  0001 C CNN
F 1 "GND" H 4150 1450 50  0000 C CNN
F 2 "" H 4150 1600 50  0000 C CNN
F 3 "" H 4150 1600 50  0000 C CNN
	1    4150 1600
	1    0    0    -1  
$EndComp
Wire Wire Line
	4150 1600 4150 1500
Wire Wire Line
	3950 1100 5000 1100
Wire Wire Line
	4150 1100 4150 1200
Wire Wire Line
	5000 1100 5000 2050
Connection ~ 4150 1100
Text HLabel 2600 1100 0    60   Input ~ 0
Vpanel
Text Label 4350 4350 0    60   ~ 0
CurrentSenseDirect
Text Label 6150 2650 0    60   ~ 0
VOutDirect_N
Text Label 4550 1100 0    60   ~ 0
VInDirect
Text Notes 8150 950  0    60   ~ 0
Spannungsmessung:
$Comp
L R R303
U 1 1 575B25FD
P 9000 1450
F 0 "R303" V 9080 1450 50  0000 C CNN
F 1 "100k" V 9000 1450 50  0000 C CNN
F 2 "Resistors_SMD:R_0603_HandSoldering" V 8930 1450 50  0001 C CNN
F 3 "" H 9000 1450 50  0000 C CNN
	1    9000 1450
	1    0    0    -1  
$EndComp
$Comp
L R R304
U 1 1 575B26C0
P 9000 1850
F 0 "R304" V 9080 1850 50  0000 C CNN
F 1 "10k" V 9000 1850 50  0000 C CNN
F 2 "Resistors_SMD:R_0603_HandSoldering" V 8930 1850 50  0001 C CNN
F 3 "" H 9000 1850 50  0000 C CNN
	1    9000 1850
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR027
U 1 1 575B26FC
P 9000 2100
F 0 "#PWR027" H 9000 1850 50  0001 C CNN
F 1 "GND" H 9000 1950 50  0000 C CNN
F 2 "" H 9000 2100 50  0000 C CNN
F 3 "" H 9000 2100 50  0000 C CNN
	1    9000 2100
	1    0    0    -1  
$EndComp
Wire Wire Line
	9000 1200 9000 1300
Wire Wire Line
	9000 1600 9000 1700
Wire Wire Line
	9000 2000 9000 2100
Text Label 8550 1200 0    60   ~ 0
VInDirect
Wire Wire Line
	8550 1200 9000 1200
Text Notes 8150 1250 0    60   ~ 0
0..36.3V
Text Notes 9150 1650 0    60   ~ 0
0..3.3V
Wire Wire Line
	9000 1650 9700 1650
Connection ~ 9000 1650
Text HLabel 9700 1650 2    60   Output ~ 0
VInSense
$Comp
L R R306
U 1 1 575B318A
P 9850 3100
F 0 "R306" V 9930 3100 50  0000 C CNN
F 1 "12k" V 9850 3100 50  0000 C CNN
F 2 "Resistors_SMD:R_0603_HandSoldering" V 9780 3100 50  0001 C CNN
F 3 "" H 9850 3100 50  0000 C CNN
	1    9850 3100
	1    0    0    -1  
$EndComp
$Comp
L R R305
U 1 1 575B31F0
P 9850 2700
F 0 "R305" V 9930 2700 50  0000 C CNN
F 1 "100k" V 9850 2700 50  0000 C CNN
F 2 "Resistors_SMD:R_0603_HandSoldering" V 9780 2700 50  0001 C CNN
F 3 "" H 9850 2700 50  0000 C CNN
	1    9850 2700
	1    0    0    -1  
$EndComp
Text Label 9250 2500 0    60   ~ 0
VOutDirect_N
Wire Wire Line
	9250 2500 9850 2500
Wire Wire Line
	9850 2850 9850 2950
Text Notes 9950 2900 0    60   ~ 0
0..3.3V
Wire Wire Line
	9850 2900 10400 2900
Connection ~ 9850 2900
Text HLabel 10400 2900 2    60   Output ~ 0
VOutSense
Text Notes 8750 2550 0    60   ~ 0
0..30.8V
Wire Notes Line
	8100 800  8100 3600
Wire Notes Line
	8100 3600 11000 3600
Wire Notes Line
	11000 3600 11000 800 
Wire Notes Line
	11000 800  8100 800 
$Comp
L MIC4604YM U301
U 1 1 575B3D7F
P 2850 2800
F 0 "U301" H 2850 2500 60  0000 C CNN
F 1 "MIC4604YM" H 2850 3100 60  0000 C CNN
F 2 "SMD_Packages:SOIC-8-W" H 2950 2700 60  0001 C CNN
F 3 "" H 2950 2700 60  0000 C CNN
	1    2850 2800
	-1   0    0    -1  
$EndComp
Wire Wire Line
	3300 2850 4050 2850
Wire Wire Line
	4050 2850 4050 2250
Wire Wire Line
	4050 2250 4700 2250
Wire Wire Line
	3300 2950 4150 2950
Wire Wire Line
	4150 2950 4150 2650
$Comp
L CP C302
U 1 1 575B40E6
P 3700 2650
F 0 "C302" H 3725 2750 50  0000 L CNN
F 1 "22uF" H 3725 2550 50  0000 L CNN
F 2 "Capacitors_SMD:C_0805_HandSoldering" H 3738 2500 50  0001 C CNN
F 3 "" H 3700 2650 50  0000 C CNN
	1    3700 2650
	1    0    0    -1  
$EndComp
Wire Wire Line
	3300 2750 3500 2750
Wire Wire Line
	3500 2750 3500 2450
Wire Wire Line
	3500 2450 3700 2450
Wire Wire Line
	3700 2450 3700 2500
Wire Wire Line
	3700 2800 3700 2950
Connection ~ 3700 2950
$Comp
L C C301
U 1 1 575B423F
P 1650 2500
F 0 "C301" H 1675 2600 50  0000 L CNN
F 1 "100nF" H 1675 2400 50  0000 L CNN
F 2 "Capacitors_SMD:C_0603_HandSoldering" H 1688 2350 50  0001 C CNN
F 3 "" H 1650 2500 50  0000 C CNN
	1    1650 2500
	1    0    0    -1  
$EndComp
Wire Wire Line
	1650 2350 1650 2200
Wire Wire Line
	1650 2200 3350 2200
Wire Wire Line
	3350 2200 3350 2650
Wire Wire Line
	3350 2650 3300 2650
$Comp
L +12V #PWR028
U 1 1 575B436F
P 2800 2100
F 0 "#PWR028" H 2800 1950 50  0001 C CNN
F 1 "+12V" H 2800 2240 50  0000 C CNN
F 2 "" H 2800 2100 50  0000 C CNN
F 3 "" H 2800 2100 50  0000 C CNN
	1    2800 2100
	1    0    0    -1  
$EndComp
Wire Wire Line
	2800 2100 2800 2200
Connection ~ 2800 2200
Wire Wire Line
	1550 2750 2400 2750
$Comp
L GND #PWR029
U 1 1 575B4430
P 1400 2650
F 0 "#PWR029" H 1400 2400 50  0001 C CNN
F 1 "GND" H 1400 2500 50  0000 C CNN
F 2 "" H 1400 2650 50  0000 C CNN
F 3 "" H 1400 2650 50  0000 C CNN
	1    1400 2650
	1    0    0    -1  
$EndComp
Wire Wire Line
	1400 2650 1400 2600
Wire Wire Line
	1400 2600 1550 2600
Wire Wire Line
	1550 2600 1550 2750
Connection ~ 1650 2750
Text HLabel 1700 2950 0    60   Input ~ 0
SW_on
Wire Wire Line
	1700 2950 2400 2950
$Comp
L MCP6001 U302
U 1 1 575B4C3B
P 9450 4500
F 0 "U302" H 9500 4700 50  0000 C CNN
F 1 "MCP6001" H 9650 4300 50  0000 C CNN
F 2 "SMD_Packages:SOT-23-5" H 9400 4600 50  0001 C CNN
F 3 "" H 9500 4700 50  0000 C CNN
	1    9450 4500
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR030
U 1 1 575B4F2F
P 9350 4900
F 0 "#PWR030" H 9350 4650 50  0001 C CNN
F 1 "GND" H 9350 4750 50  0000 C CNN
F 2 "" H 9350 4900 50  0000 C CNN
F 3 "" H 9350 4900 50  0000 C CNN
	1    9350 4900
	1    0    0    -1  
$EndComp
Wire Wire Line
	9350 4900 9350 4800
$Comp
L +3.3V #PWR031
U 1 1 575B4FB3
P 9350 3950
F 0 "#PWR031" H 9350 3800 50  0001 C CNN
F 1 "+3.3V" H 9350 4090 50  0000 C CNN
F 2 "" H 9350 3950 50  0000 C CNN
F 3 "" H 9350 3950 50  0000 C CNN
	1    9350 3950
	1    0    0    -1  
$EndComp
Wire Wire Line
	9350 3950 9350 4200
$Comp
L R R307
U 1 1 575B5038
P 9950 4750
F 0 "R307" V 10030 4750 50  0000 C CNN
F 1 "33k" V 9950 4750 50  0000 C CNN
F 2 "Resistors_SMD:R_0603_HandSoldering" V 9880 4750 50  0001 C CNN
F 3 "" H 9950 4750 50  0000 C CNN
	1    9950 4750
	1    0    0    -1  
$EndComp
$Comp
L R R308
U 1 1 575B50AB
P 9950 5500
F 0 "R308" V 10030 5500 50  0000 C CNN
F 1 "1k" V 9950 5500 50  0000 C CNN
F 2 "Resistors_SMD:R_0603_HandSoldering" V 9880 5500 50  0001 C CNN
F 3 "" H 9950 5500 50  0000 C CNN
	1    9950 5500
	1    0    0    -1  
$EndComp
Wire Wire Line
	9950 4900 9950 5350
Wire Wire Line
	9950 4600 9950 4500
Wire Wire Line
	9750 4500 10150 4500
Wire Wire Line
	9950 5200 9000 5200
Wire Wire Line
	9000 5200 9000 4600
Wire Wire Line
	9000 4600 9150 4600
Connection ~ 9950 5200
$Comp
L GND #PWR032
U 1 1 575B5203
P 9950 5750
F 0 "#PWR032" H 9950 5500 50  0001 C CNN
F 1 "GND" H 9950 5600 50  0000 C CNN
F 2 "" H 9950 5750 50  0000 C CNN
F 3 "" H 9950 5750 50  0000 C CNN
	1    9950 5750
	1    0    0    -1  
$EndComp
Wire Wire Line
	9950 5750 9950 5650
Text Label 8250 4400 0    60   ~ 0
CurrentSenseDirect
Wire Wire Line
	8250 4400 9150 4400
Text Notes 8500 4250 0    60   ~ 0
100 mV @ 10A
Wire Wire Line
	5950 4350 4350 4350
Text HLabel 10150 4500 2    60   Output ~ 0
CurrentSense
Connection ~ 9950 4500
Text Notes 9800 4400 0    60   ~ 0
3.3V @ 9.7A
Wire Wire Line
	5800 2650 6800 2650
Wire Wire Line
	4950 3450 5050 3450
Connection ~ 5000 3450
Wire Wire Line
	4650 3900 5100 3900
Wire Wire Line
	5400 3900 6800 3900
Wire Wire Line
	4650 3250 4650 2650
Connection ~ 4650 2650
Wire Wire Line
	4650 3650 4650 3900
Text Notes 4300 3250 0    60   ~ 0
BC850
Text Notes 2900 4150 0    60   ~ 0
Bootstrap-Transistor:\nkurze Pulse anlegen, um Bootstrap-\nKondensator zu laden.\nZ.B.: 5 μs an, 50 μs aus, dann\nSchaltwandler anwerfen.
$Comp
L R R301
U 1 1 575DD02D
P 4050 3450
F 0 "R301" V 4130 3450 50  0000 C CNN
F 1 "1k" V 4050 3450 50  0000 C CNN
F 2 "Resistors_SMD:R_0603_HandSoldering" V 3980 3450 50  0001 C CNN
F 3 "" H 4050 3450 50  0000 C CNN
	1    4050 3450
	0    1    1    0   
$EndComp
Wire Wire Line
	4200 3450 4350 3450
Text HLabel 3500 3450 0    60   Input ~ 0
BootstrapPulse
Wire Wire Line
	3500 3450 3900 3450
$Comp
L GND #PWR033
U 1 1 575DE546
P 9850 3350
F 0 "#PWR033" H 9850 3100 50  0001 C CNN
F 1 "GND" H 9850 3200 50  0000 C CNN
F 2 "" H 9850 3350 50  0000 C CNN
F 3 "" H 9850 3350 50  0000 C CNN
	1    9850 3350
	1    0    0    -1  
$EndComp
Wire Wire Line
	9850 3250 9850 3350
Wire Wire Line
	9850 2500 9850 2550
Text Notes 8150 3800 0    60   ~ 0
Strommessung:
Wire Notes Line
	8100 3650 8100 6450
Wire Notes Line
	11000 6450 11000 3650
Wire Notes Line
	11000 3650 8100 3650
Wire Notes Line
	8100 6450 11000 6450
$Comp
L Q_NMOS_GDS Q303
U 1 1 5769CC83
P 6550 3600
F 0 "Q303" H 6850 3650 50  0000 R CNN
F 1 "Q_NMOS_GDS" H 7200 3550 50  0000 R CNN
F 2 "SMD_Packages:DPAK-2" H 6750 3700 50  0001 C CNN
F 3 "" H 6550 3600 50  0000 C CNN
	1    6550 3600
	1    0    0    -1  
$EndComp
Wire Wire Line
	6650 3800 6650 3900
Connection ~ 6650 3900
Text HLabel 6800 3000 2    60   Output ~ 0
Load+
Text HLabel 6800 3150 2    60   Output ~ 0
Load-
Wire Wire Line
	6800 3000 6650 3000
Wire Wire Line
	6650 3000 6650 2650
Connection ~ 6650 2650
Wire Wire Line
	6800 3150 6650 3150
Wire Wire Line
	6650 3150 6650 3400
Wire Wire Line
	1650 2750 1650 2650
Text HLabel 1700 2850 0    60   Input ~ 0
LOAD_on
Wire Wire Line
	1700 2850 2400 2850
Text Label 1950 2650 0    60   ~ 0
LoadDrive
Wire Wire Line
	1950 2650 2400 2650
Text Label 6000 3600 0    60   ~ 0
LoadDrive
Wire Wire Line
	6000 3600 6350 3600
$Comp
L Q_NPN_BEC Q301
U 1 1 576AFC6F
P 4550 3450
F 0 "Q301" H 4850 3500 50  0000 R CNN
F 1 "Q_NPN_BEC" H 5150 3400 50  0000 R CNN
F 2 "SMD_Packages:SOT-23" H 4750 3550 50  0001 C CNN
F 3 "" H 4550 3450 50  0000 C CNN
	1    4550 3450
	1    0    0    -1  
$EndComp
$Comp
L D D301
U 1 1 576B0104
P 3000 1100
F 0 "D301" H 3000 1200 50  0000 C CNN
F 1 "D" H 3000 1000 50  0000 C CNN
F 2 "Discret:R3-LARGE_PADS" H 3000 1100 50  0001 C CNN
F 3 "" H 3000 1100 50  0000 C CNN
	1    3000 1100
	-1   0    0    1   
$EndComp
Wire Wire Line
	3150 1100 3350 1100
Wire Wire Line
	2850 1100 2600 1100
Text Notes 2800 950  0    60   ~ 0
Optional
$Comp
L SCH-TO-277 D302
U 1 1 576C4566
P 5000 3050
F 0 "D302" H 5000 3150 50  0000 C CNN
F 1 "SCH-TO-277" H 5000 2950 50  0000 C CNN
F 2 "TO-SMD:TO-277" H 5000 3050 50  0001 C CNN
F 3 "" H 5000 3050 50  0000 C CNN
	1    5000 3050
	0    1    1    0   
$EndComp
$Comp
L CP C305
U 1 1 57743353
P 9700 4000
F 0 "C305" H 9725 4100 50  0000 L CNN
F 1 "1uF" H 9725 3900 50  0000 L CNN
F 2 "Capacitors_SMD:C_0805_HandSoldering" H 9738 3850 50  0001 C CNN
F 3 "" H 9700 4000 50  0000 C CNN
	1    9700 4000
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR034
U 1 1 57743537
P 9700 4200
F 0 "#PWR034" H 9700 3950 50  0001 C CNN
F 1 "GND" H 9700 4050 50  0000 C CNN
F 2 "" H 9700 4200 50  0000 C CNN
F 3 "" H 9700 4200 50  0000 C CNN
	1    9700 4200
	1    0    0    -1  
$EndComp
Wire Wire Line
	9700 4200 9700 4150
Wire Wire Line
	9700 3850 9700 3800
Wire Wire Line
	9700 3800 9550 3800
Wire Wire Line
	9550 3800 9550 4000
Wire Wire Line
	9550 4000 9350 4000
Connection ~ 9350 4000
$EndSCHEMATC