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rusefi/hardware/power_supply_kb1gtt/PWR_buck_12V_switcher.sch

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EESchema Schematic File Version 2
LIBS:KICAD_Older_Version
LIBS:power
LIBS:device
LIBS:conn
LIBS:linear
LIBS:regul
LIBS:74xx
LIBS:cmos4000
LIBS:adc-dac
LIBS:memory
LIBS:xilinx
LIBS:microcontrollers
LIBS:microchip
LIBS:analog_switches
LIBS:motorola
LIBS:intel
LIBS:audio
LIBS:interface
LIBS:digital-audio
LIBS:philips
LIBS:display
LIBS:cypress
LIBS:siliconi
LIBS:contrib
LIBS:lm2596
LIBS:mos_p_numbered-pins
LIBS:mos_n_numbered-pins
LIBS:PWR_buck_12V_switcher-cache
EELAYER 25 0
EELAYER END
$Descr A 11000 8500
encoding utf-8
Sheet 1 1
Title "PWR buck 12V switcher regulator"
Date "2017-02-12"
Rev "0.5"
Comp "https://sourceforge.net/p/rusefi/"
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
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1 8600 6750
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1 9350 6450
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F 3 "~" H 8300 6650 60 0000 C CNN
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$EndComp
Text Label 6800 6400 0 60 ~ 0
VBAT
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FB
Text Label 8200 6450 0 60 ~ 0
OUT
$Comp
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1 7450 6900
1 0 0 -1
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F 3 "~" H 5350 6500 60 0000 C CNN
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F 5 "Newark,64T4128" H 5350 6500 60 0001 C CNN "VEND1,VEND1#"
F 6 "Mouser,78-SQ2301ES-T1_GE3" H 5350 6500 60 0001 C CNN "VEND2,VEND2#"
1 5350 6500
0 -1 -1 0
$EndComp
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F 3 "" H 5900 6700 60 0001 C CNN
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1 5900 6700
0 -1 -1 0
$EndComp
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F 1 "7.5V" H 5650 6400 30 0000 C CNN
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F 3 "~" H 5650 6500 60 0000 C CNN
F 4 "diodesinc,BZT52C7V5-7-F" H 5650 6500 60 0001 C CNN "MFG,MFG#"
F 5 "DIGI,BZT52C7V5-FDICT-ND" H 5650 6500 60 0001 C CNN "VEND1,VEND1#"
F 6 "sky-macau.com,5633100308" H 5650 6500 60 0001 C CNN "VEND2,VEND2#"
1 5650 6500
0 -1 -1 0
$EndComp
$Comp
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F 1 "5A" H 3750 6350 40 0000 C CNN
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F 3 "~" H 3850 6400 60 0000 C CNN
F 4 "0R,jumperwire" H 3850 6400 60 0001 C CNN "MFG,MFG#"
F 5 "0R,jumperwire" H 3850 6400 60 0001 C CNN "VEND1,VEND1#"
1 3850 6400
1 0 0 -1
$EndComp
$Comp
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F 3 "~" H 8100 6650 60 0000 C CNN
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F 5 "sky-macau.com,1438219496" H 8100 6650 60 0001 C CNN "VEND1,VEND1#"
1 8100 6650
0 -1 -1 0
$EndComp
Text Notes 7700 7150 0 60 ~ 0
ALT DIODE FOR CHINA ASSEMBLER\nLIMITS OUTPUT TO 2.3A
Text Label 4100 6400 0 60 ~ 0
Vf
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F 3 "" H 9050 6650 60 0001 C CNN
F 4 "kemet,T491D227K016AT" H 9050 6650 60 0001 C CNN "MFG,MFG#"
F 5 "DIGI,399-10429-1-ND" H 9050 6650 60 0001 C CNN "VEND1,VEND1#"
F 6 "sky-macau.com,8702041755" H 9050 6650 60 0001 C CNN "VEND2,VEND2#"
1 9050 6650
-1 0 0 -1
$EndComp
Text HLabel 9650 6450 1 60 Input ~ 0
5V-REG
$Comp
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F 1 "220uF 16V" H 9200 6500 50 0000 L CNN
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F 3 "" H 9650 6650 60 0001 C CNN
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$EndComp
$Comp
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0 -1 -1 0
$EndComp
$Comp
L ZENERsmall D2
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F 5 "DIGI,P100KDACT-ND" V -20 2500 60 0001 C CNN "VEND1,VEND1#"
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0 -1 -1 0
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Connection ~ 9050 6850
Connection ~ 7450 6850
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Connection ~ 6150 6850
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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$Comp
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F 6 "sky-macau.com,0533550982" H 6350 6500 60 0001 C CNN "VEND2,VEND2#"
1 6350 6500
0 -1 -1 0
$EndComp
Wire Wire Line
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Wire Wire Line
5650 6600 5650 6700
Text Label 5000 6400 0 60 ~ 0
Vs2
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Vs1
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Connection ~ 4600 6600
Text Notes 2825 5900 0 60 ~ 0
Brief overview\n-- F1 is a fuse, you should have an up stream fuse at the source, but in the event you over draw this board, this fuse will blow before traces burn off.\n-- Q2, R3, D2 preform an active transient protection. It will suppress voltages up to 200V, down to 19V.\n-- Q1, R1, D1 preform a reverse polarity protection. If the input signal is the wrong polarity, the gate will not conduct which will prevent current from flowing. \n-- L3 is an RF choke\n-- D3 is a second transient suppressor, it would catch faster transients allowing a brief amount of time for Q2 to preform it's duty. \n-- C1 is a bulk cap, it simply stores energy locally such that the regulator can draw large currents in short periods of time. \n-- U1, D6 L1, C2 are a buck style switching regulator, that will pull the 5V line up to 5V.\n-- R2, D5 is a power indicator, which simply shows you have power\n-- L2, C3 is a low pass filter which prevents RF ripple from getting onto the 5V node.
Text Label 3600 6400 2 60 ~ 0
Vin
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GND
$Comp
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0 -1 -1 0
$EndComp
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$Comp
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1 9650 6850
-1 0 0 1
$EndComp
$Comp
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0 -1 -1 0
$EndComp
$Comp
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F 3 "~" H 4800 6500 60 0000 C CNN
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1 4800 6500
0 -1 -1 0
$EndComp
Wire Bus Line
4711 6470 4889 6470
$EndSCHEMATC
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