step-down.sch - The Racket code generates a schematic diagr…

/hardware/step-down.sch

http://github.com/Tinkerforge/step-down-powersupply · Racket · 702 lines · 702 code · 0 blank · 0 comment · 0 complexity · 046447cb695a563c6d77cfb8ecc84fa8 MD5 · raw file

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:special
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:tinkerforge
LIBS:step-down-cache
EELAYER 27 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 1 2
Title "Step Down Powersupply"
Date "2 dec 2013"
Rev "1.2"
Comp "Tinkerforge GmbH"
Comment1 "Licensed under CERN OHL v.1.1"
Comment2 "Copyright (©) 2012, B.Nordmeyer <bastian@tinkerforge.com>"
Comment3 ""
Comment4 ""
$EndDescr
Wire Wire Line
	9850 4200 9850 3750
Wire Wire Line
	5850 3650 4650 3650
Wire Wire Line
	8550 3750 7650 3750
Wire Wire Line
	2100 4950 2100 4300
Wire Wire Line
	3650 4950 3650 3500
Wire Wire Line
	3450 2750 3600 2750
Wire Wire Line
	3900 4100 4000 4100
Wire Wire Line
	2750 3250 2750 3550
Wire Wire Line
	5750 3950 5850 3950
Wire Wire Line
	2300 3550 2100 3550
Wire Wire Line
	3650 2650 3600 2650
Wire Wire Line
	3600 2650 3600 2750
Wire Wire Line
	4650 4950 4650 4350
Connection ~ 5700 3650
Wire Wire Line
	5700 3650 5700 3750
Wire Wire Line
	5700 3750 5850 3750
Connection ~ 4650 3650
Wire Wire Line
	5000 3650 5000 3950
Wire Wire Line
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Wire Wire Line
	7050 3450 7050 3750
Wire Wire Line
	7050 3750 6650 3750
Wire Wire Line
	4650 3950 4650 2750
Wire Wire Line
	5750 4500 5750 4450
Connection ~ 8350 3750
Connection ~ 7800 3750
Wire Wire Line
	8050 3750 8050 3950
Wire Wire Line
	8050 4950 8050 4350
Wire Wire Line
	7800 4350 7800 4250
Wire Wire Line
	6900 4950 6900 4350
Wire Wire Line
	7800 4950 7800 4850
Wire Wire Line
	6900 3950 6900 3750
Connection ~ 6900 3750
Connection ~ 7800 4300
Wire Wire Line
	8350 4950 8350 4350
Wire Wire Line
	8350 3750 8350 3950
Connection ~ 8050 3750
Wire Wire Line
	1800 3050 1800 2750
Wire Wire Line
	6650 3850 6750 3850
Wire Wire Line
	6750 3850 6750 4450
Wire Wire Line
	6750 4450 7100 4450
Wire Wire Line
	7100 4450 7100 4300
Wire Wire Line
	7100 4300 7800 4300
Wire Wire Line
	6650 4950 6650 3950
Wire Wire Line
	6650 3650 6650 3450
Connection ~ 7050 3750
Wire Wire Line
	5850 3850 5300 3850
Wire Wire Line
	5300 3850 5300 3950
Wire Wire Line
	5750 4950 5750 4900
Wire Wire Line
	4150 2650 4200 2650
Wire Wire Line
	4200 2650 4200 2750
Connection ~ 4200 2750
Connection ~ 3600 2750
Wire Wire Line
	1800 3350 1800 3250
Connection ~ 2100 3550
Wire Wire Line
	5000 4350 5000 4950
Wire Wire Line
	2300 2750 2300 3050
Connection ~ 2300 2750
Connection ~ 5000 3650
Connection ~ 4400 2750
Wire Wire Line
	2750 3550 2950 3550
Wire Wire Line
	3900 3600 3900 3500
Connection ~ 2750 3550
Wire Wire Line
	4200 2750 4650 2750
Wire Wire Line
	4400 2550 4400 3200
Wire Wire Line
	1800 2750 3050 2750
Connection ~ 2750 2750
Wire Wire Line
	2100 3550 2100 3900
Wire Wire Line
	2750 4050 2750 4950
Wire Wire Line
	1800 3750 1800 4950
Wire Wire Line
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Wire Wire Line
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$Comp
L GND #PWR01
U 1 1 4F02FE4B
P 9850 4950
F 0 "#PWR01" H 9850 4950 30  0001 C CNN
F 1 "GND" H 9850 4880 30  0001 C CNN
F 2 "" H 9850 4950 60  0001 C CNN
F 3 "" H 9850 4950 60  0001 C CNN
	1    9850 4950
	1    0    0    -1  
$EndComp
$Comp
L +5V #PWR02
U 1 1 4F02FE47
P 9850 3750
F 0 "#PWR02" H 9850 3840 20  0001 C CNN
F 1 "+5V" H 9850 3840 30  0000 C CNN
F 2 "" H 9850 3750 60  0001 C CNN
F 3 "" H 9850 3750 60  0001 C CNN
	1    9850 3750
	1    0    0    -1  
$EndComp
$Comp
L CONN_2 P2
U 1 1 4F02FE35
P 10200 4300
F 0 "P2" V 10150 4300 40  0000 C CNN
F 1 "Green" V 10250 4300 40  0000 C CNN
F 2 "OQ_2P" H 10200 4300 60  0001 C CNN
F 3 "" H 10200 4300 60  0001 C CNN
	1    10200 4300
	1    0    0    -1  
$EndComp
Text Notes 7050 6200 0    40   ~ 0
Copyright Tinkerforge GmbH 2012.\nThis documentation describes Open Hardware and is licensed under the\nCERN OHL v. 1.1.\nYou may redistribute and modify this documentation under the terms of the\nCERN OHL v.1.1. (http://ohwr.org/cernohl). This documentation is distributed\nWITHOUT ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING OF\nMERCHANTABILITY, SATISFACTORY QUALITY AND FITNESS FOR A\nPARTICULAR PURPOSE. Please see the CERN OHL v.1.1 for applicable\nconditions\n
Text Notes 3550 2150 0    60   ~ 0
6.6A -> 3.3V output
$Comp
L GND #PWR03
U 1 1 4D95C9F8
P 2100 4950
F 0 "#PWR03" H 2100 4950 30  0001 C CNN
F 1 "GND" H 2100 4880 30  0001 C CNN
F 2 "" H 2100 4950 60  0001 C CNN
F 3 "" H 2100 4950 60  0001 C CNN
	1    2100 4950
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR04
U 1 1 4D776A2F
P 2750 4950
F 0 "#PWR04" H 2750 4950 30  0001 C CNN
F 1 "GND" H 2750 4880 30  0001 C CNN
F 2 "" H 2750 4950 60  0001 C CNN
F 3 "" H 2750 4950 60  0001 C CNN
	1    2750 4950
	1    0    0    -1  
$EndComp
Text GLabel 4000 4100 2    60   Output ~ 0
CURRENT
$Comp
L GND #PWR05
U 1 1 4D7769F0
P 3650 4950
F 0 "#PWR05" H 3650 4950 30  0001 C CNN
F 1 "GND" H 3650 4880 30  0001 C CNN
F 2 "" H 3650 4950 60  0001 C CNN
F 3 "" H 3650 4950 60  0001 C CNN
	1    3650 4950
	1    0    0    -1  
$EndComp
$Comp
L ZXCT1087 U1
U 1 1 4D7769CC
P 3900 3250
F 0 "U1" H 3700 3650 60  0000 C CNN
F 1 "ZXCT1086" H 3900 3400 60  0000 C CNN
F 2 "SOT23-5" H 3900 3250 60  0001 C CNN
F 3 "" H 3900 3250 60  0001 C CNN
	1    3900 3250
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR06
U 1 1 4D776078
P 1800 4950
F 0 "#PWR06" H 1800 4950 30  0001 C CNN
F 1 "GND" H 1800 4880 30  0001 C CNN
F 2 "" H 1800 4950 60  0001 C CNN
F 3 "" H 1800 4950 60  0001 C CNN
	1    1800 4950
	1    0    0    -1  
$EndComp
Text Notes 1850 3900 0    60   ~ 0
VGS = 20V max
Text Notes 2900 3100 0    60   ~ 0
Divider 1/11
$Comp
L DIODESCH D4
U 1 1 4D263E79
P 8750 3750
F 0 "D4" H 8750 3850 40  0000 C CNN
F 1 "PMEG4050BEP" H 8750 3650 40  0000 C CNN
F 2 "SOD-128" H 8750 3750 60  0001 C CNN
F 3 "" H 8750 3750 60  0001 C CNN
	1    8750 3750
	1    0    0    -1  
$EndComp
$Comp
L DIODESCH D3
U 1 1 4D263E66
P 6900 4150
F 0 "D3" H 6900 4250 40  0000 C CNN
F 1 "PMEG4050BEP" H 6900 4050 40  0000 C CNN
F 2 "SOD-128" H 6900 4150 60  0001 C CNN
F 3 "" H 6900 4150 60  0001 C CNN
	1    6900 4150
	0    -1   -1   0   
$EndComp
$Comp
L GND #PWR07
U 1 1 4D25E7A2
P 8350 4950
F 0 "#PWR07" H 8350 4950 30  0001 C CNN
F 1 "GND" H 8350 4880 30  0001 C CNN
F 2 "" H 8350 4950 60  0001 C CNN
F 3 "" H 8350 4950 60  0001 C CNN
	1    8350 4950
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR08
U 1 1 4D25E7A1
P 8050 4950
F 0 "#PWR08" H 8050 4950 30  0001 C CNN
F 1 "GND" H 8050 4880 30  0001 C CNN
F 2 "" H 8050 4950 60  0001 C CNN
F 3 "" H 8050 4950 60  0001 C CNN
	1    8050 4950
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR09
U 1 1 4D25E7A0
P 7800 4950
F 0 "#PWR09" H 7800 4950 30  0001 C CNN
F 1 "GND" H 7800 4880 30  0001 C CNN
F 2 "" H 7800 4950 60  0001 C CNN
F 3 "" H 7800 4950 60  0001 C CNN
	1    7800 4950
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR010
U 1 1 4D25E79F
P 6900 4950
F 0 "#PWR010" H 6900 4950 30  0001 C CNN
F 1 "GND" H 6900 4880 30  0001 C CNN
F 2 "" H 6900 4950 60  0001 C CNN
F 3 "" H 6900 4950 60  0001 C CNN
	1    6900 4950
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR011
U 1 1 4D25E79C
P 6650 4950
F 0 "#PWR011" H 6650 4950 30  0001 C CNN
F 1 "GND" H 6650 4880 30  0001 C CNN
F 2 "" H 6650 4950 60  0001 C CNN
F 3 "" H 6650 4950 60  0001 C CNN
	1    6650 4950
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR012
U 1 1 4D25E79B
P 5750 4950
F 0 "#PWR012" H 5750 4950 30  0001 C CNN
F 1 "GND" H 5750 4880 30  0001 C CNN
F 2 "" H 5750 4950 60  0001 C CNN
F 3 "" H 5750 4950 60  0001 C CNN
	1    5750 4950
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR013
U 1 1 4D25E799
P 5300 4950
F 0 "#PWR013" H 5300 4950 30  0001 C CNN
F 1 "GND" H 5300 4880 30  0001 C CNN
F 2 "" H 5300 4950 60  0001 C CNN
F 3 "" H 5300 4950 60  0001 C CNN
	1    5300 4950
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR014
U 1 1 4D25E798
P 5000 4950
F 0 "#PWR014" H 5000 4950 30  0001 C CNN
F 1 "GND" H 5000 4880 30  0001 C CNN
F 2 "" H 5000 4950 60  0001 C CNN
F 3 "" H 5000 4950 60  0001 C CNN
	1    5000 4950
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR015
U 1 1 4D25E796
P 4650 4950
F 0 "#PWR015" H 4650 4950 30  0001 C CNN
F 1 "GND" H 4650 4880 30  0001 C CNN
F 2 "" H 4650 4950 60  0001 C CNN
F 3 "" H 4650 4950 60  0001 C CNN
	1    4650 4950
	1    0    0    -1  
$EndComp
$Comp
L ZENER D1
U 1 1 4D1A2726
P 2100 4100
F 0 "D1" H 2100 4000 50  0000 C CNN
F 1 "Z12V" H 2100 4200 40  0000 C CNN
F 2 "SOD-123" H 2100 4100 60  0001 C CNN
F 3 "" H 2100 4100 60  0001 C CNN
	1    2100 4100
	0    -1   -1   0   
$EndComp
$Comp
L R R1
U 1 1 4D1A2712
P 2300 3300
F 0 "R1" V 2400 3300 50  0000 C CNN
F 1 "100k" V 2300 3300 50  0000 C CNN
F 2 "0402" H 2300 3300 60  0001 C CNN
F 3 "" H 2300 3300 60  0001 C CNN
	1    2300 3300
	1    0    0    -1  
$EndComp
$Comp
L MOSFET_N Q1
U 1 1 4D1A26BF
P 1900 3550
F 0 "Q1" H 1910 3720 60  0000 R CNN
F 1 "FDS8449" H 1950 3350 60  0000 R CNN
F 2 "SOIC-8-MOSFET" H 1900 3550 60  0001 C CNN
F 3 "" H 1900 3550 60  0001 C CNN
	1    1900 3550
	-1   0    0    -1  
$EndComp
Text Notes 1350 2750 0    60   ~ 0
max 27V\n5A
$Comp
L R R4
U 1 1 4D0239B1
P 3900 2650
F 0 "R4" V 4000 2650 50  0000 C CNN
F 1 "0.01" V 3900 2650 50  0000 C CNN
F 2 "1206" H 3900 2650 60  0001 C CNN
F 3 "" H 3900 2650 60  0001 C CNN
	1    3900 2650
	0    1    1    0   
$EndComp
$Comp
L R R5
U 1 1 4D02377F
P 3900 3850
F 0 "R5" V 3800 3850 50  0000 C CNN
F 1 "10k" V 3900 3850 50  0000 C CNN
F 2 "0402" H 3900 3850 60  0001 C CNN
F 3 "" H 3900 3850 60  0001 C CNN
	1    3900 3850
	1    0    0    -1  
$EndComp
Text Notes 5300 3500 0    60   ~ 0
max. 25V
$Comp
L C C3
U 1 1 4CCC05D3
P 5300 4150
F 0 "C3" H 5350 4250 50  0000 L CNN
F 1 "1µF/10V" H 5300 4050 50  0000 L CNN
F 2 "0402" H 5300 4150 60  0001 C CNN
F 3 "" H 5300 4150 60  0001 C CNN
	1    5300 4150
	1    0    0    -1  
$EndComp
$Comp
L C C5
U 1 1 4CCC05AB
P 6850 3450
F 0 "C5" V 6750 3550 50  0000 L CNN
F 1 "100nF" V 6950 3450 50  0000 L CNN
F 2 "0603" H 6850 3450 60  0001 C CNN
F 3 "" H 6850 3450 60  0001 C CNN
	1    6850 3450
	0    1    1    0   
$EndComp
$Comp
L AOZ1212 U2
U 1 1 4CCC016E
P 6250 4050
F 0 "U2" H 5950 4600 60  0000 C CNN
F 1 "AOZ1212" H 6250 4050 60  0000 C CNN
F 2 "SO-8" H 6250 4050 60  0001 C CNN
F 3 "" H 6250 4050 60  0001 C CNN
	1    6250 4050
	1    0    0    -1  
$EndComp
$Comp
L CONN_2 P1
U 1 1 4CCA03E4
P 1450 3150
F 0 "P1" V 1400 3150 40  0000 C CNN
F 1 "Black" V 1500 3150 40  0000 C CNN
F 2 "OQ_2P" H 1450 3150 60  0001 C CNN
F 3 "" H 1450 3150 60  0001 C CNN
	1    1450 3150
	-1   0    0    -1  
$EndComp
$Comp
L +5V #PWR016
U 1 1 4CCA0251
P 9150 3750
F 0 "#PWR016" H 9150 3840 20  0001 C CNN
F 1 "+5V" H 9150 3840 30  0000 C CNN
F 2 "" H 9150 3750 60  0001 C CNN
F 3 "" H 9150 3750 60  0001 C CNN
	1    9150 3750
	1    0    0    -1  
$EndComp
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L CP1 C1
U 1 1 4CC9FEDA
P 4650 4150
F 0 "C1" H 4700 4250 50  0000 L CNN
F 1 "220µF/35V" H 4450 4050 50  0000 L CNN
F 2 "ELKO_83" H 4650 4150 60  0001 C CNN
F 3 "" H 4650 4150 60  0001 C CNN
	1    4650 4150
	1    0    0    -1  
$EndComp
$Comp
L C C2
U 1 1 4CC9FE9E
P 5000 4150
F 0 "C2" H 5050 4250 50  0000 L CNN
F 1 "100nF" H 5000 4050 50  0000 L CNN
F 2 "0603" H 5000 4150 60  0001 C CNN
F 3 "" H 5000 4150 60  0001 C CNN
	1    5000 4150
	1    0    0    -1  
$EndComp
$Comp
L R R6
U 1 1 4CC9FE69
P 5750 4200
F 0 "R6" V 5650 4200 50  0000 C CNN
F 1 "10k" V 5750 4200 50  0000 C CNN
F 2 "0402" H 5750 4200 60  0001 C CNN
F 3 "" H 5750 4200 60  0001 C CNN
	1    5750 4200
	-1   0    0    1   
$EndComp
$Comp
L C C4
U 1 1 4CC9FE2D
P 5750 4700
F 0 "C4" H 5800 4800 50  0000 L CNN
F 1 "1nF" H 5750 4600 50  0000 L CNN
F 2 "0402" H 5750 4700 60  0001 C CNN
F 3 "" H 5750 4700 60  0001 C CNN
	1    5750 4700
	1    0    0    -1  
$EndComp
$Comp
L C C6
U 1 1 4CC9FDEE
P 8050 4150
F 0 "C6" H 8100 4250 50  0000 L CNN
F 1 "100nF" H 8050 4050 50  0000 L CNN
F 2 "0603" H 8050 4150 60  0001 C CNN
F 3 "" H 8050 4150 60  0001 C CNN
	1    8050 4150
	1    0    0    -1  
$EndComp
$Comp
L DRILL U4
U 1 1 4CC88840
P 10650 6700
F 0 "U4" H 10700 6750 60  0001 C CNN
F 1 "DRILL" H 10650 6700 60  0000 C CNN
F 2 "DRILL_NP" H 10650 6700 60  0001 C CNN
F 3 "" H 10650 6700 60  0001 C CNN
	1    10650 6700
	1    0    0    -1  
$EndComp
$Comp
L DRILL U3
U 1 1 4CC8883E
P 10650 6500
F 0 "U3" H 10700 6550 60  0001 C CNN
F 1 "DRILL" H 10650 6500 60  0000 C CNN
F 2 "DRILL_NP" H 10650 6500 60  0001 C CNN
F 3 "" H 10650 6500 60  0001 C CNN
	1    10650 6500
	1    0    0    -1  
$EndComp
$Comp
L R R2
U 1 1 4CB54095
P 2750 3000
F 0 "R2" V 2830 3000 50  0000 C CNN
F 1 "10k" V 2750 3000 50  0000 C CNN
F 2 "0402" H 2750 3000 60  0001 C CNN
F 3 "" H 2750 3000 60  0001 C CNN
	1    2750 3000
	1    0    0    -1  
$EndComp
$Comp
L R R3
U 1 1 4CB5408F
P 2750 3800
F 0 "R3" V 2650 3800 50  0000 C CNN
F 1 "1k" V 2750 3800 50  0000 C CNN
F 2 "0402" H 2750 3800 60  0001 C CNN
F 3 "" H 2750 3800 60  0001 C CNN
	1    2750 3800
	1    0    0    -1  
$EndComp
Text GLabel 2950 3550 2    60   Output ~ 0
VOLTAGE
$Comp
L VPP #PWR5
U 1 1 4CB30F42
P 4400 2550
F 0 "#PWR5" H 4400 2750 40  0001 C CNN
F 1 "VPP" H 4400 2700 40  0000 C CNN
F 2 "" H 4400 2550 60  0001 C CNN
F 3 "" H 4400 2550 60  0001 C CNN
	1    4400 2550
	1    0    0    -1  
$EndComp
$Comp
L DRILL U6
U 1 1 4CB2EEA5
P 11000 6700
F 0 "U6" H 11050 6750 60  0001 C CNN
F 1 "DRILL" H 11000 6700 60  0000 C CNN
F 2 "DRILL_NP" H 11000 6700 60  0001 C CNN
F 3 "" H 11000 6700 60  0001 C CNN
	1    11000 6700
	1    0    0    -1  
$EndComp
$Comp
L DRILL U5
U 1 1 4CB2EEA1
P 11000 6500
F 0 "U5" H 11050 6550 60  0001 C CNN
F 1 "DRILL" H 11000 6500 60  0000 C CNN
F 2 "DRILL_NP" H 11000 6500 60  0001 C CNN
F 3 "" H 11000 6500 60  0001 C CNN
	1    11000 6500
	1    0    0    -1  
$EndComp
$Sheet
S 600  6750 900  900 
U 4CB2EE6B
F0 "stack" 60
F1 "stack.sch" 60
$EndSheet
$Comp
L R R8
U 1 1 4CB2E991
P 7800 4600
F 0 "R8" V 7700 4600 50  0000 C CNN
F 1 "10k" V 7800 4600 50  0000 C CNN
F 2 "0402" H 7800 4600 60  0001 C CNN
F 3 "" H 7800 4600 60  0001 C CNN
	1    7800 4600
	1    0    0    -1  
$EndComp
$Comp
L R R7
U 1 1 4CB2E96D
P 7800 4000
F 0 "R7" V 7700 4000 50  0000 C CNN
F 1 "57.6k" V 7800 4000 50  0000 C CNN
F 2 "0402" H 7800 4000 60  0001 C CNN
F 3 "" H 7800 4000 60  0001 C CNN
	1    7800 4000
	1    0    0    -1  
$EndComp
$Comp
L CP1 C7
U 1 1 4CB2E8D7
P 8350 4150
F 0 "C7" H 8400 4250 50  0000 L CNN
F 1 "470µF/16V" H 8400 4050 50  0000 L CNN
F 2 "ELKO_83" H 8350 4150 60  0001 C CNN
F 3 "" H 8350 4150 60  0001 C CNN
	1    8350 4150
	1    0    0    -1  
$EndComp
$Comp
L DIODESCH D2
U 1 1 4CB2E89F
P 3250 2750
F 0 "D2" H 3250 2850 40  0000 C CNN
F 1 "PMEG4050BEP" H 3250 2650 40  0000 C CNN
F 2 "SOD-128" H 3250 2750 60  0001 C CNN
F 3 "" H 3250 2750 60  0001 C CNN
	1    3250 2750
	1    0    0    -1  
$EndComp
$Comp
L INDUCTOR L1
U 1 1 4CB2E88E
P 7350 3750
F 0 "L1" V 7300 3750 40  0000 C CNN
F 1 "10µH" V 7450 3750 40  0000 C CNN
F 2 "SRP7030" H 7350 3750 60  0001 C CNN
F 3 "SRP7030-100M" H 7350 3750 60  0001 C CNN
	1    7350 3750
	0    -1   -1   0   
$EndComp
$EndSCHEMATC