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/Modules/PowerSupply/BATPOWER04B/SCH_PCB/BATPOWER04B_PCB2.pdf |
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/Modules/PowerSupply/BATPOWER04C/PrjInfo.txt |
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0,0 → 1,16 |
[InfoShortDescription.en] |
Stepdown converter |
[InfoShortDescription.cs] |
Snižující měnič |
[InfoLongDescription.en] |
Converter module uses LM3485. Acceptable input voltage range is 4.5 V - 16V. Output voltage can be selected in fixed values 3,3 V 5 V or adjusted by trimmer. This module is especially suited for battery powered applications. |
[InfoLongDescription.cs] |
Měnič využívá obvodu LM3485. Vstupní napětí může být v rozsahu 4,5 V - 16V. Výstupní napětí 3,3 V, 5 V nebo laditelné trimrem. Je vhodný pro napájení z akumulátorů. |
[InfoBuyUST] |
[End] |
/Modules/PowerSupply/BATPOWER04C/SCH_PCB/BATPOWER04C-cache.lib |
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0,0 → 1,263 |
EESchema-LIBRARY Version 2.3 |
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#End Library |
/Modules/PowerSupply/BATPOWER04C/SCH_PCB/BATPOWER04C.bak |
---|
0,0 → 1,691 |
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 |
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LIBS:analog_switches |
LIBS:motorola |
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LIBS:digital-audio |
LIBS:philips |
LIBS:display |
LIBS:cypress |
LIBS:siliconi |
LIBS:opto |
LIBS:atmel |
LIBS:contrib |
LIBS:valves |
LIBS:Jumpers |
LIBS:MLAB_D |
LIBS:MLAB_IO |
LIBS:MLAB_T |
EELAYER 24 0 |
EELAYER END |
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/Modules/PowerSupply/BATPOWER04C/SCH_PCB/BATPOWER04C.pro |
---|
0,0 → 1,67 |
update=27.11.2014 10:18:36 |
version=1 |
last_client=kicad |
[cvpcb] |
version=1 |
NetIExt=net |
[cvpcb/libraries] |
EquName1=devcms |
[pcbnew] |
version=1 |
LastNetListRead= |
UseCmpFile=1 |
PadDrill=0.600000000000 |
PadDrillOvalY=0.600000000000 |
PadSizeH=1.500000000000 |
PadSizeV=1.500000000000 |
PcbTextSizeV=1.500000000000 |
PcbTextSizeH=1.500000000000 |
PcbTextThickness=0.300000000000 |
ModuleTextSizeV=1.000000000000 |
ModuleTextSizeH=1.000000000000 |
ModuleTextSizeThickness=0.150000000000 |
SolderMaskClearance=0.000000000000 |
SolderMaskMinWidth=0.000000000000 |
DrawSegmentWidth=0.200000000000 |
BoardOutlineThickness=0.100000000000 |
ModuleOutlineThickness=0.150000000000 |
[general] |
version=1 |
[eeschema] |
version=1 |
LibDir=../../../../../library/KiCAD/symbols |
[eeschema/libraries] |
LibName1=power |
LibName2=device |
LibName3=transistors |
LibName4=conn |
LibName5=linear |
LibName6=regul |
LibName7=74xx |
LibName8=cmos4000 |
LibName9=adc-dac |
LibName10=memory |
LibName11=xilinx |
LibName12=special |
LibName13=microcontrollers |
LibName14=dsp |
LibName15=microchip |
LibName16=analog_switches |
LibName17=motorola |
LibName18=texas |
LibName19=intel |
LibName20=audio |
LibName21=interface |
LibName22=digital-audio |
LibName23=philips |
LibName24=display |
LibName25=cypress |
LibName26=siliconi |
LibName27=opto |
LibName28=atmel |
LibName29=contrib |
LibName30=valves |
LibName31=Jumpers |
LibName32=MLAB_D |
LibName33=MLAB_IO |
LibName34=MLAB_T |
/Modules/PowerSupply/BATPOWER04C/SCH_PCB/BATPOWER04C.sch |
---|
0,0 → 1,691 |
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:Jumpers |
LIBS:MLAB_D |
LIBS:MLAB_IO |
LIBS:MLAB_T |
EELAYER 24 0 |
EELAYER END |
$Descr A4 11693 8268 |
encoding utf-8 |
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/Modules/PowerSupply/BATPOWER04C/TODO.txt |
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Problém s účinností měniče byl v této verzi vyřešen přidáním dalšího kapacitoru 470pF do zpětné napěťové vazby. Důvod nutnosti jeho přidání je pravděpodobně v tom, že do zpětné vazby se indukuje parazitní napětí, které znemožňuje správnou funkci regulace.. Tento kondenzátor vazbu tlumí. |
Primární důvod nutnosti jeho přidání je pravděpodobně layout PCB, který aktuálně neakceptuje doporučení uvedená v datasheetu obvodu. |
Ve skutečnosti je tak potřeba přepracovat většinu layoutu PCB. Jde o vedení POWERGND a GND, umístění shottky diody a prokovy. |
Dále je pravděpodobně zbytečně složitě řešeno přěpínání výstupních napětí. Protože reálně by mělo stačit přepínat pouze spodní stranu odporového děliče. Nevýhodou aktuálního řešení je skutečnost, že v případě náhodného nezapojení jumperu na výstup je aktuálně nedefinovaná hodnota výstupního napětí. |
/Modules/PowerSupply/BATPOWER04C/pdf/15mq040n.pdf |
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