Cov txheej txheem:

Tsis Tau Lwm Qhov Me Me Tswj Tswj SMPS (Tsis Muaj SMD): 8 Cov Kauj Ruam
Tsis Tau Lwm Qhov Me Me Tswj Tswj SMPS (Tsis Muaj SMD): 8 Cov Kauj Ruam

Video: Tsis Tau Lwm Qhov Me Me Tswj Tswj SMPS (Tsis Muaj SMD): 8 Cov Kauj Ruam

Video: Tsis Tau Lwm Qhov Me Me Tswj Tswj SMPS (Tsis Muaj SMD): 8 Cov Kauj Ruam
Video: Txhob tu siab Qhov koj tsis tau kuv Tub tswb vwj nkauj tshiab.MV 2021-2022 2024, Kaum ib hlis
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Tseem Muaj Lwm Yam Me Me Tswj Tswj SMPS (Tsis Muaj SMD)
Tseem Muaj Lwm Yam Me Me Tswj Tswj SMPS (Tsis Muaj SMD)

Lub npe tag nrho txoj haujlwm:

Tseem muaj lwm lub ntiaj teb kev tswj hwm qis tshaj plaws DC rau DC hloov pauv hloov lub zog siv THT (los ntawm lub tshuab thev naus laus zis) thiab tsis muaj SMD (cov cuab yeej teeb tsa saum npoo)

OK, ok, Koj tau txais kuv. Tej zaum nws tsis me dua qhov no tsim los ntawm Murata Manufacturing tuam txhab tab sis twv yuav raug hu ib yam dab tsi Koj tuaj yeem tsim los ntawm koj tus kheej hauv tsev siv cov khoom siv tau yooj yim thiab cov cuab yeej.

Kuv lub tswv yim yog los tsim qhov hloov pauv hloov pauv lub zog siv hluav taws xob rau kuv qhov kev tswj hwm microcontroller me.

Txoj haujlwm no tseem yog ib hom kev qhia yuav ua li cas los tsim txoj hauv kev ntawm PCB siv cov hlau ruaj khov es tsis txhob tsim txoj hauv kev nrog cov laug.

Cia peb ua nws!

Kauj Ruam 1: Tsim

Tsim
Tsim

Koj tuaj yeem pom ntau lub hnab ntim khoom siv hluav taws xob tsim qauv tsim, tab sis feem ntau ntawm lawv kuv pom muaj 2 qhov tsis zoo tshaj plaws:

  • Lawv yog cov khoom siv hluav taws xob tawm, txhais tau tias lawv tsis muaj txiaj ntsig zoo,
  • Lawv tsis yog tswj hwm lossis tswj hwm hauv cov kauj ruam

Kuv cov kauj ruam hloov pauv yog hloov pauv lub zog siv hluav taws xob nrog kev tswj hwm qhov tso tawm qhov hluav taws xob zoo (ntawm kev tswj hwm tus tiv thaiv). Yog tias koj xav nyeem ntxiv, muaj cov ntaub ntawv zoo heev ntawm microchip.com uas piav qhia ntau yam kev tsim vaj tsev, qhov zoo thiab qhov tsis zoo ntawm kev siv SMPSs.

Raws li lub hauv paus IC nti rau kuv qhov hloov pauv lub zog siv hluav taws xob Kuv tau xaiv nrov thiab feem ntau muaj cov nti MC34063. Nws tuaj yeem siv los tsim cov kauj ruam-nqis (phaw), nce qib (txhawb nqa) hloov pauv lossis hloov pauv hluav taws xob tsuas yog ntxiv qee cov ntsiab lus sab nraud. Kev piav qhia zoo heev yuav ua li cas tsim SMPS siv MC34063 tau ua tiav los ntawm Dave Jones hauv Nws YouTube video. Kuv pom zoo kom Koj saib nws thiab ua raws kev suav rau qhov tseem ceeb ntawm txhua lub caij.

Yog tias koj tsis xav ua nws tus kheej, Koj tuaj yeem siv lub laij lej online rau MC34063 kom haum koj cov kev xav tau. Koj tuaj yeem siv qhov no los ntawm Madis Kaal lossis tus tsim los rau qhov siab dua ntawm changpuak.ch.

Kuv khaws cov ntsiab lus tsuas yog ua raws li cov lus teb:

Kuv khaws cov capacitors loj tshaj uas tuaj yeem haum rau ntawm lub rooj tsavxwm. Kev tawm tswv yim thiab tso tawm lub zog yog 220µF 16V. Kuv Koj xav tau cov zis hluav taws xob ntau dua lossis xav tau qhov hluav taws xob ntau dua, xaiv cov capacitors uas haum

  • Inductor L: 100µH, qhov no tsuas yog ib qho kuv tau txais nrog qhov loj ntawm nti nws tus kheej.
  • Kuv siv diode 1N4001 (1A, 50V) Hloov chaw ntawm qee qhov Shotky diode. Qhov hloov pauv zaus ntawm cov diode no yog 15kHz uas tsawg dua qhov hloov pauv kuv tau siv, tab sis ua li cas tag nrho cov Circuit Court ua haujlwm tau zoo.
  • Hloov lub capacitor Ct: 1nF (nws muab hloov zaus ~ 26kHz)
  • Tam sim no tiv thaiv resistor Rsc: 0.22Ω
  • Qhov sib txawv resistor uas sawv cev rau kev sib piv piv R2 rau R1: 20kΩ

TIPS

  • Xaiv qhov hloov pauv zaus (los ntawm kev xaiv qhov hloov pauv hloov pauv tau zoo) hauv thaj tsam ntawm Koj li diode (los ntawm kev xaiv Shotky's diode tsis yog lub hom phiaj dav dav ib qho).
  • Xaiv cov capacitors nrog ntau qhov hluav taws xob ntau tshaj li qhov koj xav muab raws li cov tswv yim (cov khoom siv hluav taws xob) lossis tau txais ntawm cov zis (tso tawm cov hluav taws xob). Piv txwv li 16V capacitor ntawm cov tswv yim (nrog lub peev xwm siab dua) thiab 50V capacitor ntawm cov zis (nrog lub peev xwm tsawg dua), tab sis ob qho tib si kuj zoo ib yam.

Kauj Ruam 2: Cov Khoom Siv thiab Cov Cuab Yeej

Cov ntaub ntawv kuv tau siv, tab sis qhov txiaj ntsig tseeb qhov sib txawv nyob ntawm koj qhov xav tau:

  • Chip MC34063 (Amazon)
  • Kev hloov pauv capacitor: 1nF
  • Kev tawm tswv yim: 16V, 220µF
  • Cov zis hluav taws xob: 16V, 220µF (Kuv pom zoo 50V, 4.7µF)
  • Kev hloov pauv nrawm: 1N4001 (Qee qhov Shotky diode tau nrawm dua)
  • Resistor: 180Ω (tus nqi tsis xav tau)
  • Kev tiv thaiv: 0.22Ω
  • Kuj tsis paub meej resistor: 0-20kΩ, tab sis Koj tuaj yeem siv 0-50kΩ
  • Inductor: 100 µH
  • Tsab ntawv PCB pawg thawj coj saib (BangGood.com)
  • Qee cov kab hluav taws xob luv

Cov cuab yeej xav tau:

  • Qhov chaw nres tsheb Soldering (thiab cov khoom siv hluav taws xob nyob ib puag ncig nws: solder hlau, cob yog tias xav tau, qee yam los ntxuav lub taub, thiab lwm yam …)
  • Pliers, kab pheeb ces kaum kab/sab txiav
  • Pom lossis tig cov cuab yeej los txiav lub rooj tsavxwm
  • Cov ntaub ntawv
  • Cov kab xev (yog, raws li cov cuab yeej, tsis yog khoom siv)
  • Koj

Kauj Ruam 3: Tso Chaw - Pib

Tso Chaw - Pib
Tso Chaw - Pib
Tso Chaw - Pib
Tso Chaw - Pib
Tso Chaw - Pib
Tso Chaw - Pib
Tso Chaw - Pib
Tso Chaw - Pib

Kuv siv sijhawm ntau los npaj cov ntsiab lus ntawm pawg thawj coj hauv kev teeb tsa zoo li no, yog li nws nyob qis dua qhov chaw li sai tau. Tom qab ntau qhov kev sim thiab ua tsis tiav, txoj haujlwm no nthuav tawm yam kuv tau xaus nrog. Lub sijhawm no, Kuv xav tias qhov no yog qhov kev pom zoo tshaj plaws ntawm cov khoom siv tsuas yog 1 sab ntawm lub rooj tsavxwm.

Kuv tau txiav txim siab muab cov ntsiab lus ntawm ob sab, tab sis tom qab ntawd:

  • soldering yuav nyuaj heev
  • Nws tsis nyob tsawg dua qhov chaw
  • SMPS yuav muaj qee qhov tsis xwm yeem, ua kom nws nce mus rau hauv xws li bog lossis ntawm 9V roj teeb nyuaj ua kom tiav

Txhawm rau txuas cov nodes Kuv tau siv cov txheej txheem ntawm siv cov hlau liab qab, khoov nws hauv qhov kev cia siab ntawm txoj hauv kev thiab tom qab ntawd muab nws txuas rau ntawm lub rooj tsavxwm. Kuv nyiam cov txheej txheem no tsis txhob siv cov laug, vim:

  • Siv cov laug los "txuas cov dots" ntawm PCB Kuv xav tias vwm thiab qee yam tsis tsim nyog. Niaj hnub no cov xaim hluav taws xob muaj cov yas uas siv los deoxidize cov kab laug sab thiab saum npoo. Tab sis siv cov kab laug sab ua tus tsim txoj hauv kev, ua rau cov kua nplaum ua pa tawm thiab tawm qee qhov chaw oxidized raug, uas kuv xav tias tsis zoo rau hauv Circuit Court nws tus kheej.
  • Ntawm PCB Kuv tau siv, txuas 2 "dots" nrog tus neeg muag khoom yog qhov yuav luag tsis yooj yim sua. Cov kab laug sab lo rau "dots" yam tsis muaj kev sib txuas ntawm lawv. Yog tias koj siv PCB qhov twg "dots" tau ua los ntawm tooj liab thiab lawv nyob ze rau ib leeg, tom qab ntawd nws zoo li yooj yim dua rau kev sib txuas.
  • Siv cov laug los tsim txoj hauv kev siv tsuas yog… kom ntau dua. Siv xov hlau tsuas yog tsawg dua "kim".
  • Thaum ua yuam kev, nws tuaj yeem nyuaj heev kom tshem txoj hauv kev qub qub thiab hloov nws nrog qhov tshiab. Siv txoj kab hlau nws yog qhov haujlwm yooj yim dua.
  • Kev siv cov xov hlau ua rau muaj kev ntseeg tau zoo dua qub.

Qhov tsis zoo yog tias nws siv sijhawm ntau dua los tsim cov hlau thiab muab nws tso rau. Tab sis yog tias koj tau txais qee qhov kev paub nws tsis nyuaj ua haujlwm ntxiv lawm. Tsawg kawg kuv tsuas yog siv rau nws.

Lub tswv yim

  • Txoj cai tseem ceeb los tso cov ntsiab lus yog txiav ob txhais ceg zoo nyob rau lwm sab ntawm lub rooj tsavxwm, kom ze rau ntawm lub rooj tsavxwm li sai tau. Nws yuav pab peb tom qab thaum peb yuav tso cov hlau los tsim txoj hauv kev.
  • Tsis txhob siv cov ceg ceg los tsim txoj hauv kev. Feem ntau nws yog lub tswv yim zoo los ua nws, tab sis yog tias koj ua yuam kev, lossis Koj lub hauv paus yuav tsum tau hloov (piv txwv li nws tau tawg) ces nws nyuaj heev ua nws. Koj yuav tsum tau txiav txoj hauv kev-xaim ib qho thiab vim tias ob txhais ceg tau khoov, nws tuaj yeem nyuaj rau rub tawm lub hauv paus los ntawm pawg thawj coj.
  • Sim tsim txoj hauv kev los ntawm sab hauv ntawm Circuit mus rau sab nraud, lossis los ntawm ib sab mus rau lwm qhov. Sim zam qhov xwm txheej, thaum Koj xav tau los tsim txoj hauv kev, tab sis lwm txoj hauv kev ib puag ncig twb tau tsim lawm. Nws tuaj yeem nyuaj rau tuav txoj hauv kev-xaim.
  • Tsis txhob txiav txoj hauv kev-xaim mus rau qhov ntev kawg/cov duab ua ntej yuav siv tau. Kev siv txoj kab ntev dua, xaim nws, siv daim kab xev los tuav txoj hauv kev-xaim nyob rau hauv ib txoj haujlwm ntawm lub rooj tsavxwm, muab tshuaj txhuam nws thiab thaum kawg txiav nws ntawm qhov xav tau (kos duab).

Kauj Ruam 4: Tso Cov Ntsiab Lus - Txoj Haujlwm Tseem Ceeb

Tso Chaw - Cov Haujlwm Tseem Ceeb
Tso Chaw - Cov Haujlwm Tseem Ceeb
Tso Chaw - Cov Haujlwm Tseem Ceeb
Tso Chaw - Cov Haujlwm Tseem Ceeb
Tso Chaw - Cov Haujlwm Tseem Ceeb
Tso Chaw - Cov Haujlwm Tseem Ceeb
Tso Chaw - Cov Haujlwm Tseem Ceeb
Tso Chaw - Cov Haujlwm Tseem Ceeb

Koj tsuas yog yuav tsum tau ua raws li cov txheej txheem thiab tso cov khoom ib los ntawm ib qho, txiav cov ceg ntau dhau, ua kom nws nyob ze rau ntawm lub rooj tsav xwm ntau li ntau tau, hloov txoj hauv kev-xaim, muab nws txuas thiab txiav. Rov ua dua nrog lwm lub ntsiab lus.

Tswv yim:

Koj tuaj yeem tshawb xyuas ntawm daim duab uas kuv tau tso rau txhua lub caij. Sim ua raws li cov phiaj xwm muab. Hauv qee qhov xwm txheej nyuaj cuam tshuam nrog kev siv ntau zaus thiab lwm yam, cov khoom siv hluav taws xob tau muab sib cais ntawm lub rooj tsav khoom vim yog cov hlau nplaum uas tuaj yeem cuam tshuam nrog lwm cov ntsiab lus. Tab sis hauv peb txoj haujlwm peb tsuas yog tsis quav ntsej txog rooj plaub no. Tias yog vim li cas kuv tso tus inductor ncaj qha rau saum MC34063 nti thiab kuv tsis quav ntsej txog kev cuam tshuam dab tsi

Kauj Ruam 5: Txiav Board

Txiav Board
Txiav Board
Txiav Board
Txiav Board
Txiav Board
Txiav Board

Koj yuav tsum paub ua ntej, tias PCB cov laug cam nyuaj heev thiab vim qhov nyuaj rau txiav. Kuv tau sim ua ntej los siv cov cuab yeej teb (duab). Cov kab txiav yog du heev, tab sis nws tau siv sijhawm ntev heev los txiav nws. Kuv txiav txim siab hloov mus rau ib qho kev pom txiav cov hlau thiab rau kuv nws tau ua haujlwm feem ntau zoo.

Lub tswv yim:

  • Txiav lub rooj tsavxwm ua ntej siv tag nrho cov ntsiab lus. Ua ntej tso tag nrho cov ntsiab lus (tsis muaj soldering), kos cov ntsiab lus txiav, tshem tawm txhua lub ntsiab lus, txiav lub rooj tsavxwm thiab tom qab ntawd muab cov ntsiab lus rov qab thiab muab tshuaj txhuam rau lawv. Thaum lub sijhawm txiav Koj yuav tsum tau saib xyuas cov khoom uas twb tau siv lawm.
  • Kuv xav xum siv pom tsis siv cov cuab yeej teb, tab sis qhov no tej zaum yog ib yam khoom.

Kauj ruam 6: Shaping

Zoo
Zoo
Zoo
Zoo
Zoo
Zoo
Zoo
Zoo

Tom qab txiav, Kuv tau siv cov ntaub ntawv los ua kom du thiab tig cov ces kaum.

Qhov kawg ntawm pawg thawj coj yog 2.5cm ntev, 2cm dav thiab 1.5cm qhov siab.

Txoj haujlwm hauv nws daim ntawv ntxhib yog ua tiav. Sijhawm rau kev sim…

Kauj Ruam 7: Xeem Kev Ua Haujlwm

Kev Xeem Ua Haujlwm
Kev Xeem Ua Haujlwm

Kuv tau txuas lub rooj tsavxwm mus rau kab txaij LED (12 LEDs) uas xav tau 12V lub zog siv. Kuv Teeb 5V cov tswv yim (ntiag tug los ntawm USB chaw nres nkoj) thiab siv cov tswj kev tiv thaiv Kuv teeb tsa 12V cov zis. Nws ua haujlwm zoo kawg nkaus. Vim tias qhov kev sib tw siab tam sim no, MC34063 nti tau sov. Kuv tawm ntawm lub Circuit Court nrog LED kab txaij rau qee feeb thiab nws ruaj khov.

Kauj Ruam 8: Qhov Kawg

Zaum Kawg
Zaum Kawg

Kuv xav tias nws yog qhov ua tiav loj uas SMPS me me tuaj yeem ua kom muaj zog zoo li qhov kos tam sim no zoo li 12 LEDs.

Pom zoo: