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 3700 2050
F 0 "U400" H 3700 2417 50  0000 C CNN
F 1 "LM358" H 3700 2326 50  0000 C CNN
F 2 "Package_SO:SO-8_3.9x4.9mm_P1.27mm" H 3700 2050 50  0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/lm2904-n.pdf" H 3700 2050 50  0001 C CNN
	1    3700 2050
	1    0    0    1   
$EndComp
$Comp
L Amplifier_Operational:LM358 U400
U 3 1 62528341
P 3700 2050
F 0 "U400" H 3658 2096 50  0000 L CNN
F 1 "LM358" H 3658 2005 50  0000 L CNN
F 2 "Package_SO:SO-8_3.9x4.9mm_P1.27mm" H 3700 2050 50  0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/lm2904-n.pdf" H 3700 2050 50  0001 C CNN
	3    3700 2050
	1    0    0    -1  
$EndComp
$Comp
L Device:R R400
U 1 1 6252AA40
P 2950 2150
F 0 "R400" V 2743 2150 50  0000 C CNN
F 1 "47k" V 2834 2150 50  0000 C CNN
F 2 "Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder" V 2880 2150 50  0001 C CNN
F 3 "~" H 2950 2150 50  0001 C CNN
	1    2950 2150
	0    1    1    0   
$EndComp
Wire Wire Line
	3400 2150 3200 2150
$Comp
L Device:C C400
U 1 1 62530F17
P 3200 2400
F 0 "C400" H 3315 2446 50  0000 L CNN
F 1 "10uF" H 3315 2355 50  0000 L CNN
F 2 "Capacitor_THT:CP_Radial_D4.0mm_P2.00mm" H 3238 2250 50  0001 C CNN
F 3 "~" H 3200 2400 50  0001 C CNN
	1    3200 2400
	1    0    0    -1  
$EndComp
Wire Wire Line
	3200 2250 3200 2150
Connection ~ 3200 2150
Wire Wire Line
	3200 2150 3100 2150
Wire Wire Line
	3200 2550 3200 2600
$Comp
L power:GND #PWR0141
U 1 1 6253577E
P 3200 2650
F 0 "#PWR0141" H 3200 2400 50  0001 C CNN
F 1 "GND" H 3205 2477 50  0000 C CNN
F 2 "" H 3200 2650 50  0001 C CNN
F 3 "" H 3200 2650 50  0001 C CNN
	1    3200 2650
	1    0    0    -1  
$EndComp
Text GLabel 2650 2150 0    50   Input ~ 0
Vdcraw
Wire Wire Line
	2800 2150 2650 2150
Wire Wire Line
	3200 2600 3600 2600
Wire Wire Line
	3600 2600 3600 2350
Connection ~ 3200 2600
Wire Wire Line
	3200 2600 3200 2650
$Comp
L power:VBUS #PWR0142
U 1 1 62541FB6
P 3600 1650
F 0 "#PWR0142" H 3600 1500 50  0001 C CNN
F 1 "VBUS" H 3615 1823 50  0000 C CNN
F 2 "" H 3600 1650 50  0001 C CNN
F 3 "" H 3600 1650 50  0001 C CNN
	1    3600 1650
	1    0    0    -1  
$EndComp
Wire Wire Line
	3600 1750 3600 1650
Wire Wire Line
	3400 1950 3300 1950
Wire Wire Line
	3300 1950 3300 1400
Wire Wire Line
	3300 1400 4100 1400
Wire Wire Line
	4100 1400 4100 2050
Wire Wire Line
	4100 2050 4000 2050
Connection ~ 4100 2050
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_1206_3216Metric_Pad1.30x1.75mm_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_1206_3216Metric_Pad1.30x1.75mm_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 Potentiometer_Digital:DS1882E 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-16_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 6650 3350
F 0 "#PWR0144" H 6650 3200 50  0001 C CNN
F 1 "+3V3" H 6665 3523 50  0000 C CNN
F 2 "" H 6650 3350 50  0001 C CNN
F 3 "" H 6650 3350 50  0001 C CNN
	1    6650 3350
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0145
U 1 1 6257376C
P 6600 4950
F 0 "#PWR0145" H 6600 4700 50  0001 C CNN
F 1 "GND" H 6605 4777 50  0000 C CNN
F 2 "" H 6600 4950 50  0001 C CNN
F 3 "" H 6600 4950 50  0001 C CNN
	1    6600 4950
	1    0    0    -1  
$EndComp
Wire Wire Line
	6650 4800 6650 4850
Wire Wire Line
	6650 4850 6600 4850
Wire Wire Line
	6550 4850 6550 4800
Wire Wire Line
	6600 4850 6600 4950
Connection ~ 6600 4850
Wire Wire Line
	6600 4850 6550 4850
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 3900 0    50   Input ~ 0
DPOT_CLK
Text GLabel 6150 4000 0    50   Input ~ 0
DPOT_DAT
Wire Wire Line
	6250 3900 6150 3900
Wire Wire Line
	6150 4000 6250 4000
Wire Wire Line
	6650 3350 6650 3600
$Comp
L power:VBUS #PWR0147
U 1 1 6258CDD8
P 6550 3350
F 0 "#PWR0147" H 6550 3200 50  0001 C CNN
F 1 "VBUS" H 6565 3523 50  0000 C CNN
F 2 "" H 6550 3350 50  0001 C CNN
F 3 "" H 6550 3350 50  0001 C CNN
	1    6550 3350
	1    0    0    -1  
$EndComp
Wire Wire Line
	6550 3600 6550 3350
Wire Wire Line
	6550 4850 6150 4850
Wire Wire Line
	6150 4850 6150 4600
Wire Wire Line
	6150 4600 6250 4600
Connection ~ 6550 4850
Wire Wire Line
	6250 4500 6150 4500
Wire Wire Line
	6150 4500 6150 4600
Connection ~ 6150 4600
Wire Wire Line
	6250 4400 6150 4400
Wire Wire Line
	6150 4400 6150 4500
Connection ~ 6150 4500
Wire Wire Line
	6150 4400 6150 4200
Connection ~ 6150 4400
Wire Wire Line
	6150 4200 6250 4200
$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_1206_3216Metric_Pad1.30x1.75mm_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_1206_3216Metric_Pad1.30x1.75mm_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 3000 1300 0    50   ~ 0
Use a (shitty) active RC filter to\nfilter out ripple (or PWM signal)\nfrom the unfiltered DCDC output
$Comp
L Jumper:Jumper_3_Bridged12 JP400
U 1 1 6267A25D
P 4750 2750
F 0 "JP400" V 4704 2817 50  0000 L CNN
F 1 "Jumper_3_Bridged12" V 4795 2817 50  0000 L CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical" H 4750 2750 50  0001 C CNN
F 3 "~" H 4750 2750 50  0001 C CNN
	1    4750 2750
	0    -1   1    0   
$EndComp
Wire Wire Line
	4750 2500 4750 2050
Wire Wire Line
	4750 3000 4750 3400
Wire Wire Line
	4750 3400 4300 3400
Text GLabel 4300 3400 0    50   Input ~ 0
Vdcraw
Wire Wire Line
	7200 2750 7200 3900
Wire Wire Line
	4900 2750 5300 2750
Wire Wire Line
	4100 2050 4750 2050
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 3450 3250 0    50   ~ 0
Use filtered or raw DCDC output\ndepending on PSU used: use raw\nif using PSU4 (LDO), otherwise\nuse filtered.
$EndSCHEMATC