EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 5 6
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L Amplifier_Operational:LM358 U400
U 1 1 62527821
P 3350 3950
F 0 "U400" H 3350 4317 50  0000 C CNN
F 1 "LM358" H 3350 4226 50  0000 C CNN
F 2 "Package_SO:SO-8_3.9x4.9mm_P1.27mm" H 3350 3950 50  0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/lm2904-n.pdf" H 3350 3950 50  0001 C CNN
	1    3350 3950
	1    0    0    1   
$EndComp
$Comp
L Amplifier_Operational:LM358 U400
U 3 1 62528341
P 3350 3950
F 0 "U400" H 3308 3996 50  0000 L CNN
F 1 "LM358" H 3308 3905 50  0000 L CNN
F 2 "Package_SO:SO-8_3.9x4.9mm_P1.27mm" H 3350 3950 50  0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/lm2904-n.pdf" H 3350 3950 50  0001 C CNN
	3    3350 3950
	1    0    0    -1  
$EndComp
$Comp
L Device:R R400
U 1 1 6252AA40
P 2600 4050
F 0 "R400" V 2393 4050 50  0000 C CNN
F 1 "47k" V 2484 4050 50  0000 C CNN
F 2 "Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder" V 2530 4050 50  0001 C CNN
F 3 "~" H 2600 4050 50  0001 C CNN
	1    2600 4050
	0    1    1    0   
$EndComp
Wire Wire Line
	3050 4050 2850 4050
$Comp
L Device:C C400
U 1 1 62530F17
P 2850 4300
F 0 "C400" H 2965 4346 50  0000 L CNN
F 1 "10uF" H 2965 4255 50  0000 L CNN
F 2 "Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder" H 2888 4150 50  0001 C CNN
F 3 "~" H 2850 4300 50  0001 C CNN
	1    2850 4300
	1    0    0    -1  
$EndComp
Wire Wire Line
	2850 4150 2850 4050
Connection ~ 2850 4050
Wire Wire Line
	2850 4050 2750 4050
Wire Wire Line
	2850 4450 2850 4500
$Comp
L power:GND #PWR0141
U 1 1 6253577E
P 2850 4550
F 0 "#PWR0141" H 2850 4300 50  0001 C CNN
F 1 "GND" H 2855 4377 50  0000 C CNN
F 2 "" H 2850 4550 50  0001 C CNN
F 3 "" H 2850 4550 50  0001 C CNN
	1    2850 4550
	1    0    0    -1  
$EndComp
Wire Wire Line
	2450 4050 2400 4050
Wire Wire Line
	2850 4500 3250 4500
Wire Wire Line
	3250 4500 3250 4250
Connection ~ 2850 4500
Wire Wire Line
	2850 4500 2850 4550
$Comp
L power:VBUS #PWR0142
U 1 1 62541FB6
P 3250 3550
F 0 "#PWR0142" H 3250 3400 50  0001 C CNN
F 1 "VBUS" H 3265 3723 50  0000 C CNN
F 2 "" H 3250 3550 50  0001 C CNN
F 3 "" H 3250 3550 50  0001 C CNN
	1    3250 3550
	1    0    0    -1  
$EndComp
Wire Wire Line
	3250 3650 3250 3550
Wire Wire Line
	3050 3850 2950 3850
Wire Wire Line
	2950 3850 2950 3300
Wire Wire Line
	2950 3300 3750 3300
Wire Wire Line
	3750 3300 3750 3950
Wire Wire Line
	3750 3950 3650 3950
Connection ~ 3750 3950
Text GLabel 5300 2600 1    50   Input ~ 0
Vdcflt
$Comp
L Device:R R401
U 1 1 625474BB
P 5300 3050
F 0 "R401" H 5370 3096 50  0000 L CNN
F 1 "10k" H 5370 3005 50  0000 L CNN
F 2 "Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder" V 5230 3050 50  0001 C CNN
F 3 "~" H 5300 3050 50  0001 C CNN
	1    5300 3050
	1    0    0    -1  
$EndComp
$Comp
L Device:R R402
U 1 1 62547F7D
P 5300 3550
F 0 "R402" H 5370 3596 50  0000 L CNN
F 1 "10k" H 5370 3505 50  0000 L CNN
F 2 "Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder" V 5230 3550 50  0001 C CNN
F 3 "~" H 5300 3550 50  0001 C CNN
	1    5300 3550
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0143
U 1 1 6254865E
P 5300 3850
F 0 "#PWR0143" H 5300 3600 50  0001 C CNN
F 1 "GND" H 5305 3677 50  0000 C CNN
F 2 "" H 5300 3850 50  0001 C CNN
F 3 "" H 5300 3850 50  0001 C CNN
	1    5300 3850
	1    0    0    -1  
$EndComp
Wire Wire Line
	5300 3850 5300 3700
Wire Wire Line
	5300 3400 5300 3300
Text GLabel 5450 3300 2    50   Input ~ 0
ADC0
Wire Wire Line
	5450 3300 5300 3300
Connection ~ 5300 3300
Wire Wire Line
	5300 3300 5300 3200
$Comp
L misc-mcus:DS1803 U401
U 1 1 6255530A
P 6650 4200
F 0 "U401" H 6650 4981 50  0000 C CNN
F 1 "DS1803" H 6650 4890 50  0000 C CNN
F 2 "Package_SO:TSSOP-14_4.4x5mm_P0.65mm" H 6850 3550 50  0001 C CNN
F 3 "" H 6250 4100 50  0001 C CNN
	1    6650 4200
	1    0    0    -1  
$EndComp
Text GLabel 7150 4500 2    50   Input ~ 0
DPOT_LO
Text GLabel 7150 4400 2    50   Input ~ 0
DPOT_W
Text GLabel 7150 4300 2    50   Input ~ 0
DPOT_HI
Wire Wire Line
	7150 4300 7050 4300
Wire Wire Line
	7050 4400 7150 4400
Wire Wire Line
	7150 4500 7050 4500
$Comp
L power:+3V3 #PWR0144
U 1 1 62571F0D
P 6900 3100
F 0 "#PWR0144" H 6900 2950 50  0001 C CNN
F 1 "+3V3" H 6915 3273 50  0000 C CNN
F 2 "" H 6900 3100 50  0001 C CNN
F 3 "" H 6900 3100 50  0001 C CNN
	1    6900 3100
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0145
U 1 1 6257376C
P 6650 4900
F 0 "#PWR0145" H 6650 4650 50  0001 C CNN
F 1 "GND" H 6655 4727 50  0000 C CNN
F 2 "" H 6650 4900 50  0001 C CNN
F 3 "" H 6650 4900 50  0001 C CNN
	1    6650 4900
	1    0    0    -1  
$EndComp
Wire Wire Line
	6650 4700 6650 4800
Wire Wire Line
	6650 4800 6650 4900
Wire Wire Line
	7050 3900 7200 3900
Wire Wire Line
	7050 4100 7650 4100
Wire Wire Line
	7650 4100 7650 4250
$Comp
L power:GND #PWR0146
U 1 1 6257D4F0
P 7650 4250
F 0 "#PWR0146" H 7650 4000 50  0001 C CNN
F 1 "GND" H 7655 4077 50  0000 C CNN
F 2 "" H 7650 4250 50  0001 C CNN
F 3 "" H 7650 4250 50  0001 C CNN
	1    7650 4250
	1    0    0    -1  
$EndComp
Text GLabel 7950 4000 2    50   Input ~ 0
Vdclo
Wire Wire Line
	7050 4000 7800 4000
Text GLabel 6150 3950 0    50   Input ~ 0
DPOT_CLK
Text GLabel 6150 4050 0    50   Input ~ 0
DPOT_DAT
Wire Wire Line
	6250 3950 6150 3950
Wire Wire Line
	6150 4050 6250 4050
Wire Wire Line
	6900 3100 6900 3350
$Comp
L power:VBUS #PWR0147
U 1 1 6258CDD8
P 6650 3450
F 0 "#PWR0147" H 6650 3300 50  0001 C CNN
F 1 "VBUS" H 6665 3623 50  0000 C CNN
F 2 "" H 6650 3450 50  0001 C CNN
F 3 "" H 6650 3450 50  0001 C CNN
	1    6650 3450
	1    0    0    -1  
$EndComp
Wire Wire Line
	6650 3700 6650 3450
Wire Wire Line
	6150 4800 6150 4500
Wire Wire Line
	6150 4500 6250 4500
Wire Wire Line
	6250 4400 6150 4400
Wire Wire Line
	6150 4400 6150 4500
Connection ~ 6150 4500
Wire Wire Line
	6250 4300 6150 4300
Wire Wire Line
	6150 4300 6150 4400
Connection ~ 6150 4400
$Comp
L Device:R R403
U 1 1 625A082E
P 7800 4250
F 0 "R403" H 7870 4296 50  0000 L CNN
F 1 "10k" H 7870 4205 50  0000 L CNN
F 2 "Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder" V 7730 4250 50  0001 C CNN
F 3 "~" H 7800 4250 50  0001 C CNN
	1    7800 4250
	1    0    0    -1  
$EndComp
$Comp
L Device:R R404
U 1 1 625A0834
P 7800 4750
F 0 "R404" H 7870 4796 50  0000 L CNN
F 1 "10k" H 7870 4705 50  0000 L CNN
F 2 "Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder" V 7730 4750 50  0001 C CNN
F 3 "~" H 7800 4750 50  0001 C CNN
	1    7800 4750
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0148
U 1 1 625A083A
P 7800 5050
F 0 "#PWR0148" H 7800 4800 50  0001 C CNN
F 1 "GND" H 7805 4877 50  0000 C CNN
F 2 "" H 7800 5050 50  0001 C CNN
F 3 "" H 7800 5050 50  0001 C CNN
	1    7800 5050
	1    0    0    -1  
$EndComp
Wire Wire Line
	7800 5050 7800 4900
Wire Wire Line
	7800 4600 7800 4500
Wire Wire Line
	7800 4100 7800 4000
Text GLabel 7950 4500 2    50   Input ~ 0
ADC1
Wire Wire Line
	7950 4500 7800 4500
Connection ~ 7800 4500
Wire Wire Line
	7800 4500 7800 4400
Connection ~ 7800 4000
Wire Wire Line
	7800 4000 7950 4000
Text Notes 2650 3200 0    50   ~ 0
Use a (shitty) active RC filter to\nfilter out ripple (or PWM signal)\nfrom the unfiltered DCDC output
$Comp
L misc-mcus:Jumper_4 JP400
U 1 1 6267A25D
P 4700 2750
F 0 "JP400" V 4654 2817 50  0000 L CNN
F 1 "Jumper_4" V 4745 2817 50  0000 L CNN
F 2 "chip-bo:Jumper4_PinHeader" H 4700 2750 50  0001 C CNN
F 3 "~" H 4700 2750 50  0001 C CNN
	1    4700 2750
	1    0    0    -1  
$EndComp
Text GLabel 2250 2800 0    50   Input ~ 0
Vdcraw
Wire Wire Line
	7200 2750 7200 3900
Wire Wire Line
	4900 2750 5300 2750
Wire Wire Line
	3750 3950 4400 3950
Wire Wire Line
	5300 2900 5300 2750
Connection ~ 5300 2750
Wire Wire Line
	5300 2750 7200 2750
Wire Wire Line
	5300 2750 5300 2600
Text Notes 1500 2650 0    50   ~ 0
Use filtered or raw DCDC output\ndepending on PSU used: use raw\nif using PSU4 (LDO), otherwise\nuse filtered.
Wire Wire Line
	4400 3950 4400 2900
Wire Wire Line
	4400 2900 4500 2900
Wire Wire Line
	2250 2800 2400 2800
Wire Wire Line
	2400 4050 2400 2800
Connection ~ 2400 2800
Wire Wire Line
	2400 2800 4500 2800
$Comp
L power:+3V3 #PWR0108
U 1 1 62BDA8CE
P 4150 2450
F 0 "#PWR0108" H 4150 2300 50  0001 C CNN
F 1 "+3V3" H 4165 2623 50  0000 C CNN
F 2 "" H 4150 2450 50  0001 C CNN
F 3 "" H 4150 2450 50  0001 C CNN
	1    4150 2450
	1    0    0    -1  
$EndComp
$Comp
L power:VBUS #PWR0109
U 1 1 62BDB43F
P 4400 2450
F 0 "#PWR0109" H 4400 2300 50  0001 C CNN
F 1 "VBUS" H 4415 2623 50  0000 C CNN
F 2 "" H 4400 2450 50  0001 C CNN
F 3 "" H 4400 2450 50  0001 C CNN
	1    4400 2450
	1    0    0    -1  
$EndComp
Wire Wire Line
	4400 2600 4400 2450
Wire Wire Line
	4400 2600 4500 2600
Wire Wire Line
	4150 2700 4150 2450
Wire Wire Line
	4150 2700 4500 2700
NoConn ~ 6900 3350
Connection ~ 6650 4800
Wire Wire Line
	6150 4800 6650 4800
$EndSCHEMATC