EESchema Schematic File Version 4 EELAYER 30 0 EELAYER END $Descr A4 11693 8268 encoding utf-8 Sheet 8 8 Title "" Date "" Rev "" Comp "" Comment1 "" Comment2 "" Comment3 "" Comment4 "" $EndDescr $Comp L power:+12V #PWR0138 U 1 1 60E341D3 P 4150 3400 F 0 "#PWR0138" H 4150 3250 50 0001 C CNN F 1 "+12V" H 4165 3573 50 0000 C CNN F 2 "" H 4150 3400 50 0001 C CNN F 3 "" H 4150 3400 50 0001 C CNN 1 4150 3400 1 0 0 -1 $EndComp $Comp L power:GND #PWR0139 U 1 1 60E344EB P 4150 5000 F 0 "#PWR0139" H 4150 4750 50 0001 C CNN F 1 "GND" H 4155 4827 50 0000 C CNN F 2 "" H 4150 5000 50 0001 C CNN F 3 "" H 4150 5000 50 0001 C CNN 1 4150 5000 1 0 0 -1 $EndComp $Comp L Device:Q_NPN_BEC Q8 U 1 1 60F73A02 P 4050 4500 F 0 "Q8" H 4240 4546 50 0000 L CNN F 1 "PMBT3904" H 4240 4455 50 0000 L CNN F 2 "Package_TO_SOT_SMD:SOT-23" H 4250 4600 50 0001 C CNN F 3 "~" H 4050 4500 50 0001 C CNN 1 4050 4500 1 0 0 -1 $EndComp $Comp L Device:R R127 U 1 1 60F7CC07 P 4150 3850 F 0 "R127" H 4220 3896 50 0000 L CNN F 1 "10k" H 4220 3805 50 0000 L CNN F 2 "Resistor_SMD:R_0402_1005Metric" V 4080 3850 50 0001 C CNN F 3 "~" H 4150 3850 50 0001 C CNN 1 4150 3850 1 0 0 -1 $EndComp $Comp L Device:R R126 U 1 1 60F8DC46 P 3700 4700 F 0 "R126" V 3907 4700 50 0000 C CNN F 1 "10k" V 3816 4700 50 0000 C CNN F 2 "Resistor_SMD:R_0402_1005Metric" V 3630 4700 50 0001 C CNN F 3 "~" H 3700 4700 50 0001 C CNN 1 3700 4700 -1 0 0 1 $EndComp $Comp L Device:R R125 U 1 1 60F8FB89 P 3400 4500 F 0 "R125" H 3470 4546 50 0000 L CNN F 1 "1k" H 3470 4455 50 0000 L CNN F 2 "Resistor_SMD:R_0402_1005Metric" V 3330 4500 50 0001 C CNN F 3 "~" H 3400 4500 50 0001 C CNN 1 3400 4500 0 -1 -1 0 $EndComp Wire Wire Line 5350 3700 5450 3700 Wire Wire Line 5450 3700 5450 3600 Wire Wire Line 5450 3400 5350 3400 Wire Wire Line 5350 3500 5450 3500 Connection ~ 5450 3500 Wire Wire Line 5450 3500 5450 3400 Wire Wire Line 5350 3600 5450 3600 Connection ~ 5450 3600 Wire Wire Line 5450 3600 5450 3500 Wire Wire Line 4750 3500 4650 3500 Wire Wire Line 4650 3500 4650 3600 Wire Wire Line 4650 3700 4750 3700 Wire Wire Line 4750 3600 4650 3600 Connection ~ 4650 3600 Wire Wire Line 4650 3600 4650 3700 Wire Wire Line 4150 3700 4150 3600 Wire Wire Line 4150 3400 4150 3600 Connection ~ 4150 3600 Wire Wire Line 4150 4000 4150 4100 Wire Wire Line 4950 4100 4950 4000 Connection ~ 4150 4100 Wire Wire Line 4150 4700 4150 4900 Wire Wire Line 3550 4500 3700 4500 Wire Wire Line 3700 4850 3700 4900 Wire Wire Line 3700 4900 4150 4900 Connection ~ 4150 4900 Wire Wire Line 4150 4900 4150 5000 Wire Wire Line 3700 4550 3700 4500 Connection ~ 3700 4500 Wire Wire Line 3700 4500 3850 4500 Text HLabel 3100 4500 0 50 Input ~ 0 12V_SW Wire Wire Line 3250 4500 3100 4500 $Comp L Device:R R131 U 1 1 628EB7FE P 6150 3400 F 0 "R131" H 6220 3446 50 0000 L CNN F 1 "10k" H 6220 3355 50 0000 L CNN F 2 "Resistor_SMD:R_0402_1005Metric" V 6080 3400 50 0001 C CNN F 3 "~" H 6150 3400 50 0001 C CNN 1 6150 3400 0 -1 -1 0 $EndComp $Comp L Device:LED D22 U 1 1 628EC8B3 P 5750 3400 F 0 "D22" V 5789 3282 50 0000 R CNN F 1 "LED_12V_OUT" V 5698 3282 50 0000 R CNN F 2 "LED_SMD:LED_0603_1608Metric" H 5750 3400 50 0001 C CNN F 3 "~" H 5750 3400 50 0001 C CNN 1 5750 3400 -1 0 0 1 $EndComp $Comp L power:GND #PWR0140 U 1 1 628F2CF4 P 6450 3550 F 0 "#PWR0140" H 6450 3300 50 0001 C CNN F 1 "GND" H 6455 3377 50 0000 C CNN F 2 "" H 6450 3550 50 0001 C CNN F 3 "" H 6450 3550 50 0001 C CNN 1 6450 3550 1 0 0 -1 $EndComp Wire Wire Line 5450 3400 5600 3400 Connection ~ 5450 3400 Wire Wire Line 5900 3400 6000 3400 Wire Wire Line 6300 3400 6450 3400 Wire Wire Line 6450 3400 6450 3550 Wire Wire Line 4150 4100 4950 4100 Wire Wire Line 4150 3600 4650 3600 Wire Wire Line 4150 4100 4150 4300 Text GLabel 5350 5400 0 50 Input ~ 0 +12V_OUT Wire Wire Line 5350 5400 5450 5400 $Comp L Device:R R128 U 1 1 60FB945B P 5450 4650 F 0 "R128" V 5243 4650 50 0000 C CNN F 1 "0.05/1%/3W" V 5334 4650 50 0000 C CNN F 2 "Resistor_SMD:R_2010_5025Metric" V 5380 4650 50 0001 C CNN F 3 "~" H 5450 4650 50 0001 C CNN 1 5450 4650 -1 0 0 1 $EndComp Connection ~ 5450 3700 Wire Wire Line 8000 4700 7900 4700 Wire Wire Line 7900 4600 8000 4600 NoConn ~ 7100 4500 $Comp L TestAutomation:INA190 U15 U 1 1 622227F5 P 7500 4500 F 0 "U15" H 7500 4135 50 0000 C CNN F 1 "INA190A1" H 7500 4226 50 0000 C CNN F 2 "Package_TO_SOT_SMD:TSOT-23-8" H 7500 4500 50 0001 C CNN F 3 "https://www.ti.com/lit/ds/symlink/ina190.pdf" H 7500 4500 50 0001 C CNN 1 7500 4500 -1 0 0 1 $EndComp $Comp L power:GND #PWR0144 U 1 1 62250711 P 8350 4400 F 0 "#PWR0144" H 8350 4150 50 0001 C CNN F 1 "GND" V 8355 4272 50 0000 R CNN F 2 "" H 8350 4400 50 0001 C CNN F 3 "" H 8350 4400 50 0001 C CNN 1 8350 4400 0 -1 -1 0 $EndComp $Comp L power:+3V3 #PWR0141 U 1 1 6225459A P 6800 3050 F 0 "#PWR0141" H 6800 2900 50 0001 C CNN F 1 "+3V3" H 6815 3223 50 0000 C CNN F 2 "" H 6800 3050 50 0001 C CNN F 3 "" H 6800 3050 50 0001 C CNN 1 6800 3050 1 0 0 -1 $EndComp $Comp L Device:L L7 U 1 1 62254B17 P 7150 3200 F 0 "L7" V 7340 3200 50 0000 C CNN F 1 "10uH" V 7249 3200 50 0000 C CNN F 2 "Inductor_SMD:L_0603_1608Metric" H 7150 3200 50 0001 C CNN F 3 "~" H 7150 3200 50 0001 C CNN 1 7150 3200 0 -1 -1 0 $EndComp Wire Wire Line 6800 3200 7000 3200 Wire Wire Line 8400 4700 8150 4700 Wire Wire Line 8350 4400 8150 4400 $Comp L Device:C C49 U 1 1 62283944 P 8150 4550 F 0 "C49" H 8265 4596 50 0000 L CNN F 1 "0.1uF" H 8265 4505 50 0000 L CNN F 2 "Capacitor_SMD:C_0402_1005Metric" H 8188 4400 50 0001 C CNN F 3 "~" H 8150 4550 50 0001 C CNN 1 8150 4550 1 0 0 -1 $EndComp Wire Wire Line 8000 4600 8000 4700 Connection ~ 8150 4400 Wire Wire Line 8150 4700 8000 4700 Connection ~ 8150 4700 Connection ~ 8000 4700 $Comp L Device:C C46 U 1 1 6228F6B8 P 6050 4650 F 0 "C46" H 6165 4696 50 0000 L CNN F 1 "1000pF" H 6165 4605 50 0000 L CNN F 2 "Capacitor_SMD:C_0402_1005Metric" H 6088 4500 50 0001 C CNN F 3 "~" H 6050 4650 50 0001 C CNN 1 6050 4650 1 0 0 -1 $EndComp $Comp L Device:R R129 U 1 1 6228FFFD P 5800 4300 F 0 "R129" V 5593 4300 50 0000 C CNN F 1 "2k" V 5684 4300 50 0000 C CNN F 2 "Resistor_SMD:R_0402_1005Metric" V 5730 4300 50 0001 C CNN F 3 "~" H 5800 4300 50 0001 C CNN 1 5800 4300 0 1 1 0 $EndComp $Comp L Device:R R130 U 1 1 622966C0 P 5800 5000 F 0 "R130" V 5593 5000 50 0000 C CNN F 1 "2k" V 5684 5000 50 0000 C CNN F 2 "Resistor_SMD:R_0402_1005Metric" V 5730 5000 50 0001 C CNN F 3 "~" H 5800 5000 50 0001 C CNN 1 5800 5000 0 1 1 0 $EndComp Wire Wire Line 6050 4500 6050 4300 Wire Wire Line 6050 4800 6050 5000 Wire Wire Line 6400 5000 6400 4700 Wire Wire Line 6400 4600 6400 4300 Wire Wire Line 6400 4600 7100 4600 Wire Wire Line 6400 4700 7100 4700 Text HLabel 7650 5200 2 50 Input ~ 0 12V_CURRENT $Comp L Amplifier_Operational:LMV321 U16 U 1 1 622C2DA6 P 8550 3350 F 0 "U16" H 8894 3396 50 0000 L CNN F 1 "LMV321" H 8894 3305 50 0000 L CNN F 2 "Package_TO_SOT_SMD:SOT-23-5" H 8550 3350 50 0001 L CNN F 3 "http://www.ti.com/lit/ds/symlink/lmv324.pdf" H 8550 3350 50 0001 C CNN 1 8550 3350 -1 0 0 -1 $EndComp Wire Wire Line 7900 4400 8150 4400 $Comp L Device:R R133 U 1 1 622D7C74 P 9150 3050 F 0 "R133" H 9220 3096 50 0000 L CNN F 1 "10k/1%" H 9220 3005 50 0000 L CNN F 2 "Resistor_SMD:R_0402_1005Metric" V 9080 3050 50 0001 C CNN F 3 "~" H 9150 3050 50 0001 C CNN 1 9150 3050 1 0 0 -1 $EndComp $Comp L Device:R R134 U 1 1 622D8703 P 9150 3450 F 0 "R134" H 9220 3496 50 0000 L CNN F 1 "10k/1%" H 9220 3405 50 0000 L CNN F 2 "Resistor_SMD:R_0402_1005Metric" V 9080 3450 50 0001 C CNN F 3 "~" H 9150 3450 50 0001 C CNN 1 9150 3450 1 0 0 -1 $EndComp Wire Wire Line 9150 3200 9150 3250 Connection ~ 9150 3250 Wire Wire Line 9150 3250 9150 3300 Wire Wire Line 8850 3250 9150 3250 Wire Wire Line 8250 3350 8000 3350 Wire Wire Line 8950 3450 8850 3450 Wire Wire Line 8950 3850 8950 3450 Wire Wire Line 8000 3350 8000 3850 Wire Wire Line 8000 3850 8950 3850 Wire Wire Line 7900 4500 8000 4500 Wire Wire Line 8000 4500 8000 3850 Connection ~ 8000 3850 Wire Wire Line 6800 3200 6800 3050 Text Label 7550 3200 0 50 ~ 0 +3V3A $Comp L Device:C C47 U 1 1 62308E49 P 7400 3350 F 0 "C47" H 7515 3396 50 0000 L CNN F 1 "10uF" H 7515 3305 50 0000 L CNN F 2 "Capacitor_SMD:C_0402_1005Metric" H 7438 3200 50 0001 C CNN F 3 "~" H 7400 3350 50 0001 C CNN 1 7400 3350 1 0 0 -1 $EndComp $Comp L power:GND #PWR0142 U 1 1 6230C6C8 P 7400 3600 F 0 "#PWR0142" H 7400 3350 50 0001 C CNN F 1 "GND" H 7405 3427 50 0000 C CNN F 2 "" H 7400 3600 50 0001 C CNN F 3 "" H 7400 3600 50 0001 C CNN 1 7400 3600 1 0 0 -1 $EndComp Wire Wire Line 7300 3200 7400 3200 Connection ~ 7400 3200 Wire Wire Line 7400 3200 7550 3200 Wire Wire Line 7400 3500 7400 3600 Text Label 8400 4700 0 50 ~ 0 +3V3A Text Label 9150 2750 0 50 ~ 0 +3V3A Wire Wire Line 9150 2900 9150 2850 Wire Wire Line 8650 3050 8650 2850 Wire Wire Line 8650 2850 9150 2850 Connection ~ 9150 2850 Wire Wire Line 9150 2850 9150 2750 Wire Wire Line 8650 3650 8650 3750 Wire Wire Line 8650 3750 9150 3750 Wire Wire Line 9150 3750 9150 3600 $Comp L power:GND #PWR0145 U 1 1 623172E5 P 9150 3850 F 0 "#PWR0145" H 9150 3600 50 0001 C CNN F 1 "GND" H 9155 3677 50 0000 C CNN F 2 "" H 9150 3850 50 0001 C CNN F 3 "" H 9150 3850 50 0001 C CNN 1 9150 3850 1 0 0 -1 $EndComp Wire Wire Line 9150 3750 9150 3850 Connection ~ 9150 3750 $Comp L Device:C C48 U 1 1 6232E952 P 7500 5450 F 0 "C48" H 7615 5496 50 0000 L CNN F 1 "1uF" H 7615 5405 50 0000 L CNN F 2 "Capacitor_SMD:C_0402_1005Metric" H 7538 5300 50 0001 C CNN F 3 "~" H 7500 5450 50 0001 C CNN 1 7500 5450 1 0 0 -1 $EndComp $Comp L Device:R R132 U 1 1 62330B74 P 7200 5200 F 0 "R132" V 6993 5200 50 0000 C CNN F 1 "1k" V 7084 5200 50 0000 C CNN F 2 "Resistor_SMD:R_0402_1005Metric" V 7130 5200 50 0001 C CNN F 3 "~" H 7200 5200 50 0001 C CNN 1 7200 5200 0 1 1 0 $EndComp $Comp L power:GND #PWR0143 U 1 1 62338366 P 7500 5700 F 0 "#PWR0143" H 7500 5450 50 0001 C CNN F 1 "GND" H 7505 5527 50 0000 C CNN F 2 "" H 7500 5700 50 0001 C CNN F 3 "" H 7500 5700 50 0001 C CNN 1 7500 5700 1 0 0 -1 $EndComp Wire Wire Line 7500 5300 7500 5200 Connection ~ 7500 5200 Wire Wire Line 7500 5200 7350 5200 Wire Wire Line 7500 5200 7650 5200 Wire Wire Line 7050 5200 6900 5200 Wire Wire Line 6900 5200 6900 4400 Wire Wire Line 6900 4400 7100 4400 Wire Wire Line 7500 5600 7500 5700 $Comp L TestAutomation:SI4425DDY-T1-GE3 Q9 U 1 1 62724742 P 4950 4100 F 0 "Q9" V 5831 4000 50 0000 C CNN F 1 "SI4425DDY-T1-GE3" V 5740 4000 50 0000 C CNN F 2 "TestAutomation:SI4425DDY-Vishay-C-06527-09_2006-I-0" H 4950 4600 50 0001 L CNN F 3 "http://www.vishay.com/docs/64732/si4425dd.pdf" H 4950 4700 50 0001 L CNN F 4 "Trans" H 4950 4800 50 0001 L CNN "category" F 5 "-13A" H 4950 4900 50 0001 L CNN "continuous drain current" F 6 "Discrete Semiconductors" H 4950 5000 50 0001 L CNN "device class L1" F 7 "Transistors" H 4950 5100 50 0001 L CNN "device class L2" F 8 "MOSFETs" H 4950 5200 50 0001 L CNN "device class L3" F 9 "MOSFET P-CH 30V 19.7A 8-SOIC" H 4950 5300 50 0001 L CNN "digikey description" F 10 "SI4425DDY-T1-GE3CT-ND" H 4950 5400 50 0001 L CNN "digikey part number" F 11 "-30V" H 4950 5500 50 0001 L CNN "drain to source breakdown voltage" F 12 "0.0081Ω" H 4950 5600 50 0001 L CNN "drain to source resistance" F 13 "-30V" H 4950 5700 50 0001 L CNN "drain to source voltage" F 14 "20V" H 4950 5800 50 0001 L CNN "gate to source voltage" F 15 "1.75mm" H 4950 5900 50 0001 L CNN "height" F 16 "2610pF @ -15V" H 4950 6000 50 0001 L CNN "input capacitace at vds" F 17 "yes" H 4950 6100 50 0001 L CNN "lead free" F 18 "e8ffa996ad20234c" H 4950 6200 50 0001 L CNN "library id" F 19 "Vishay" H 4950 6300 50 0001 L CNN "manufacturer" F 20 "+150°C" H 4950 6400 50 0001 L CNN "max junction temp" F 21 "MOSFET 30V 19.7A 5.7W 9.8mohm @ 10V" H 4950 6500 50 0001 L CNN "mouser description" F 22 "781-SI4425DDY-GE3" H 4950 6600 50 0001 L CNN "mouser part number" F 23 "1" H 4950 6700 50 0001 L CNN "number of P channels" F 24 "1" H 4950 6800 50 0001 L CNN "number of channels" F 25 "SO-8" H 4950 6900 50 0001 L CNN "package" F 26 "2.5W" H 4950 7000 50 0001 L CNN "power dissipation" F 27 "yes" H 4950 7100 50 0001 L CNN "rohs" F 28 "0.1mm" H 4950 7200 50 0001 L CNN "standoff height" F 29 "MOSFET" H 4950 7300 50 0001 L CNN "technology" F 30 "+150°C" H 4950 7400 50 0001 L CNN "temperature range high" F 31 "-55°C" H 4950 7500 50 0001 L CNN "temperature range low" F 32 "-1.2V" H 4950 7600 50 0001 L CNN "threshold vgs" F 33 "42ns" H 4950 7700 50 0001 L CNN "turn off delay time" F 34 "12ns" H 4950 7800 50 0001 L CNN "turn on delay time" 1 4950 4100 0 -1 -1 0 $EndComp Wire Wire Line 5450 4800 5450 5000 Wire Wire Line 5450 3700 5450 4300 Wire Wire Line 5950 4300 6050 4300 Connection ~ 6050 4300 Wire Wire Line 6050 4300 6400 4300 Wire Wire Line 5650 4300 5450 4300 Connection ~ 5450 4300 Wire Wire Line 5450 4300 5450 4500 Wire Wire Line 5650 5000 5450 5000 Connection ~ 5450 5000 Wire Wire Line 5450 5000 5450 5400 Wire Wire Line 5950 5000 6050 5000 Connection ~ 6050 5000 Wire Wire Line 6050 5000 6400 5000 $EndSCHEMATC