295 lines
7.2 KiB
Plaintext
295 lines
7.2 KiB
Plaintext
EESchema Schematic File Version 4
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EELAYER 30 0
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EELAYER END
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$Descr A4 11693 8268
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encoding utf-8
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Sheet 4 5
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Title ""
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Date ""
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Rev ""
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Comp ""
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Comment1 ""
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Comment2 ""
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Comment3 ""
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Comment4 ""
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$EndDescr
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Text HLabel 1100 1800 0 50 Input ~ 0
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5V
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Text HLabel 1150 2900 0 50 Input ~ 0
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GND
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Text HLabel 5850 1800 2 50 Output ~ 0
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3.3V
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$Comp
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L Regulator_Switching:TPS62823DLC U401
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U 1 1 626BA926
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P 2450 2100
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F 0 "U401" H 2450 2667 50 0000 C CNN
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F 1 "TPS62823DLC" H 2450 2576 50 0000 C CNN
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F 2 "Package_DFN_QFN:Texas_VSON-HR-8_1.5x2mm_P0.5mm" H 2600 1750 50 0001 L CNN
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F 3 "http://www.ti.com/lit/ds/symlink/tps62823.pdf" H 2450 2650 50 0001 C CNN
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1 2450 2100
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1 0 0 -1
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$EndComp
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$Comp
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L Device:L L401
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U 1 1 6287F4E4
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P 3250 1800
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F 0 "L401" H 3400 1700 50 0000 C CNN
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F 1 "470n 20% 32R; muRata DFE201610E-R47M=P2" H 3400 1600 50 0000 C CNN
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F 2 "Inductor_SMD:L_0805_2012Metric_Pad1.15x1.40mm_HandSolder" H 3250 1800 50 0001 C CNN
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F 3 "~" H 3250 1800 50 0001 C CNN
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1 3250 1800
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0 -1 -1 0
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$EndComp
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$Comp
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L Device:R R402
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U 1 1 62880161
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P 3650 2600
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F 0 "R402" V 3950 2550 50 0000 L CNN
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F 1 "43k2 1% 100 mW; Multicomp MCWR06X4322FTL" V 4050 1700 50 0000 L CNN
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F 2 "Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder" V 3580 2600 50 0001 C CNN
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F 3 "~" H 3650 2600 50 0001 C CNN
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1 3650 2600
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1 0 0 -1
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$EndComp
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Wire Wire Line
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3650 2850 3650 2750
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Wire Wire Line
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3650 2450 3650 2350
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Wire Wire Line
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3650 2350 3400 2350
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Wire Wire Line
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3400 2350 3400 2000
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Wire Wire Line
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3400 2000 2850 2000
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Connection ~ 3650 2350
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Wire Wire Line
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3650 2350 3650 2200
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Wire Wire Line
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2850 1800 3100 1800
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Wire Wire Line
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3400 1800 3650 1800
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Wire Wire Line
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4250 1800 4250 1900
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Wire Wire Line
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3650 1900 3650 1800
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Connection ~ 3650 1800
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Wire Wire Line
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3650 1800 4250 1800
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$Comp
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L Device:C C402
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U 1 1 62880DDF
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P 4250 2050
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F 0 "C402" V 4450 2050 50 0000 L CNN
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F 1 "1n2 50V X7R Yageo CC0402KRX7R9BB122" V 4550 500 50 0000 L CNN
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F 2 "Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder" H 4288 1900 50 0001 C CNN
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F 3 "~" H 4250 2050 50 0001 C CNN
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1 4250 2050
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1 0 0 -1
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$EndComp
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Wire Wire Line
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3650 2350 4250 2350
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Wire Wire Line
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4250 2350 4250 2200
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$Comp
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L Device:C C403
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U 1 1 6288137A
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P 4750 2050
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F 0 "C403" V 4950 2050 50 0000 L CNN
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F 1 "10u 25V X7R Kemet C1206X106M3RACTU" V 5050 550 50 0000 L CNN
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F 2 "Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder" H 4788 1900 50 0001 C CNN
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F 3 "~" H 4750 2050 50 0001 C CNN
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1 4750 2050
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1 0 0 -1
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$EndComp
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Wire Wire Line
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4250 1800 4750 1800
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Connection ~ 4250 1800
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Wire Wire Line
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5600 1900 5600 1800
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Connection ~ 5600 1800
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Wire Wire Line
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4750 1900 4750 1800
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Connection ~ 4750 1800
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Wire Wire Line
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4750 1800 5150 1800
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Wire Wire Line
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4750 2350 4750 2200
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Wire Wire Line
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5600 2200 5600 2350
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$Comp
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L power:GND #PWR0404
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U 1 1 62883423
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P 5600 2350
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F 0 "#PWR0404" H 5600 2100 50 0001 C CNN
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F 1 "GND" H 5605 2177 50 0000 C CNN
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F 2 "" H 5600 2350 50 0001 C CNN
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F 3 "" H 5600 2350 50 0001 C CNN
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1 5600 2350
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1 0 0 -1
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$EndComp
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$Comp
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L power:GND #PWR0403
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U 1 1 628835E8
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P 4750 2350
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F 0 "#PWR0403" H 4750 2100 50 0001 C CNN
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F 1 "GND" H 4755 2177 50 0000 C CNN
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F 2 "" H 4750 2350 50 0001 C CNN
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F 3 "" H 4750 2350 50 0001 C CNN
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1 4750 2350
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1 0 0 -1
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$EndComp
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Text Label 3000 2000 0 50 ~ 0
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3.3V_FB
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$Comp
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L power:GND #PWR0406
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U 1 1 62885018
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P 2550 2650
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F 0 "#PWR0406" H 2550 2400 50 0001 C CNN
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F 1 "GND" H 2555 2477 50 0000 C CNN
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F 2 "" H 2550 2650 50 0001 C CNN
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F 3 "" H 2550 2650 50 0001 C CNN
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1 2550 2650
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1 0 0 -1
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$EndComp
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Wire Wire Line
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2550 2650 2550 2500
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$Comp
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L power:GND #PWR0405
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U 1 1 62885AD9
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P 2350 2650
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F 0 "#PWR0405" H 2350 2400 50 0001 C CNN
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F 1 "GND" H 2355 2477 50 0000 C CNN
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F 2 "" H 2350 2650 50 0001 C CNN
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F 3 "" H 2350 2650 50 0001 C CNN
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1 2350 2650
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1 0 0 -1
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$EndComp
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Wire Wire Line
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2350 2650 2350 2500
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$Comp
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L Device:C C401
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U 1 1 628860E2
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P 1400 2050
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F 0 "C401" V 1600 2000 50 0000 L CNN
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F 1 "10u 25V X7R Kemet C1206X106M3RACTU" V 1700 550 50 0000 L CNN
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F 2 "Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder" H 1438 1900 50 0001 C CNN
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F 3 "~" H 1400 2050 50 0001 C CNN
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1 1400 2050
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1 0 0 -1
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$EndComp
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Wire Wire Line
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2050 1800 1900 1800
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Wire Wire Line
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1400 1900 1400 1800
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Connection ~ 1400 1800
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Wire Wire Line
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1400 1800 1100 1800
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Wire Wire Line
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1400 2200 1400 2350
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$Comp
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L power:GND #PWR0402
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U 1 1 628872B6
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P 1400 2350
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F 0 "#PWR0402" H 1400 2100 50 0001 C CNN
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F 1 "GND" H 1405 2177 50 0000 C CNN
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F 2 "" H 1400 2350 50 0001 C CNN
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F 3 "" H 1400 2350 50 0001 C CNN
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1 1400 2350
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1 0 0 -1
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$EndComp
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Wire Wire Line
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1400 2900 1400 3050
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$Comp
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L power:GND #PWR0407
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U 1 1 62887736
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P 1400 3050
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F 0 "#PWR0407" H 1400 2800 50 0001 C CNN
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F 1 "GND" H 1405 2877 50 0000 C CNN
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F 2 "" H 1400 3050 50 0001 C CNN
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F 3 "" H 1400 3050 50 0001 C CNN
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1 1400 3050
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1 0 0 -1
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$EndComp
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Wire Wire Line
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1400 2900 1150 2900
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Wire Wire Line
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2050 1900 1900 1900
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Wire Wire Line
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1900 1900 1900 1800
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Connection ~ 1900 1800
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Wire Wire Line
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1900 1800 1400 1800
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Text Notes 1150 6250 0 50 ~ 0
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Vout = 3.3 V\nR2 = 10 kOhm\nR1 = R2 * (Vout / 0.6 V - 1) = 45 kOhm --> R1 = 47 kOhm\nR1a = 43.1 kOhm, R1b = 2 kOhm\n\nVout = ((R1a + R1b) / R2 + 1) * 0.6 = 3.25 / 3.31 / 3.37 V (min / typ / max)\n\nVin = 4 / 5 / 5.5 V\nL = 470 nH\nf_sw = 2.2 MHz\nDelta_IL_max = Vout * (1 - Vout / Vin) * (L_min * f_sw) = 0.624 / 1.35 / 1.66 A\nIout_max = 2 A\nIpeak = Iout_max + Delta_IL_max / 2 = 2.31 / 2.68 / 2.83 A\n
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$Comp
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L Device:R R403
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U 1 1 62890114
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P 3650 3000
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F 0 "R403" V 3750 2950 50 0000 L CNN
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F 1 "2k 1% 100 mW; Yageo RC0603FR-072KL" V 3850 1600 50 0000 L CNN
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F 2 "Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder" V 3580 3000 50 0001 C CNN
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F 3 "~" H 3650 3000 50 0001 C CNN
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1 3650 3000
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1 0 0 -1
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$EndComp
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$Comp
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L power:GND #PWR0408
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U 1 1 6289011A
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P 3650 3250
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F 0 "#PWR0408" H 3650 3000 50 0001 C CNN
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F 1 "GND" H 3655 3077 50 0000 C CNN
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F 2 "" H 3650 3250 50 0001 C CNN
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F 3 "" H 3650 3250 50 0001 C CNN
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1 3650 3250
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1 0 0 -1
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$EndComp
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Wire Wire Line
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3650 3250 3650 3150
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$Comp
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L Device:C C404
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U 1 1 6289B891
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P 5600 2050
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F 0 "C404" V 5800 2050 50 0000 L CNN
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F 1 "10u 25V X7R Kemet C1206X106M3RACTU" V 5900 550 50 0000 L CNN
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F 2 "Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder" H 5638 1900 50 0001 C CNN
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F 3 "~" H 5600 2050 50 0001 C CNN
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1 5600 2050
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1 0 0 -1
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$EndComp
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$Comp
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L Device:R R?
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U 1 1 629D0CF5
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P 3650 2050
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AR Path="/6224BD36/629D0CF5" Ref="R?" Part="1"
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AR Path="/6219F0E9/629D0CF5" Ref="R401" Part="1"
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F 0 "R401" V 3750 2050 50 0000 C CNN
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F 1 "10k 1% 100 mW; Multicomp MCWR06X1002FTL" V 3850 2500 50 0000 C CNN
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F 2 "Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder" V 3580 2050 50 0001 C CNN
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F 3 "~" H 3650 2050 50 0001 C CNN
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1 3650 2050
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1 0 0 -1
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$EndComp
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Wire Wire Line
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2050 2200 1900 2200
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NoConn ~ 1900 2200
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$Comp
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L power:PWR_FLAG #FLG0101
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U 1 1 62DFC072
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P 5150 1700
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F 0 "#FLG0101" H 5150 1775 50 0001 C CNN
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F 1 "PWR_FLAG" H 5150 1873 50 0000 C CNN
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F 2 "" H 5150 1700 50 0001 C CNN
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F 3 "~" H 5150 1700 50 0001 C CNN
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1 5150 1700
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1 0 0 -1
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$EndComp
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Wire Wire Line
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5150 1700 5150 1800
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Connection ~ 5150 1800
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Wire Wire Line
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5150 1800 5600 1800
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Wire Wire Line
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5600 1800 5850 1800
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$EndSCHEMATC
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