Kune akawanda asina ruzivo mainjiniya muindasitiri yemagetsi.Mabhodhi ePCB akagadzirwa anowanzova nezvinetso zvakasiyana-siyana nekuda kwekuregeredza mamwe macheki muchikamu chekupedzisira chekugadzira, senge kusakwana kwemutsara upamhi, chikamu label silk screen kudhinda paburi, socket Padhuze, masaini zvishwe, etc. , matambudziko emagetsi kana matambudziko ekugadzirisa anokonzerwa, uye mumatambudziko akakomba, bhodhi inoda kudhindwa zvakare, zvichiita kuti iparadze.Imwe yematanho akanyanya kukosha mune inotevera nhanho yePCB dhizaini ndeyekuongorora.
Pane zvakawanda zvakawanda mumashure-cheki yePCB board dhizaini:
1. Component packaging
(1) Padhi spacing
Kana chiri chishandiso chitsva, unofanirwa kudhirowa chikamu pasuru wega kuti uve nechokwadi chekufamba kwakaringana.Iyo pad spacing inokanganisa zvakananga kushambadzira kwezvikamu.
(2) Via size (kana iripo)
Pamidziyo yeplug-in, saizi yeburi rinofanirwa kunge iine muganho wakakwana, uye zvakafanira kuchengetera isingasviki 0.2mm.
(3) Rondedzera kudhinda sirika skrini
Iyo yekudhindisa skrini yekudhinda yemudziyo iri nani pane saizi chaiyo kuona kuti mudziyo unogona kuiswa zvakanaka.
2. PCB bhodhi marongerwo
(1) IC haifanire kunge iri padyo nemupendero webhodhi.
(2) Zvishandiso zveimwe module module zvinofanirwa kuiswa padyo nemumwe
Semuenzaniso, iyo decoupling capacitor inofanira kunge iri pedyo nepini yemagetsi ye IC, uye zvigadziro zvinoumba dhipatimendi rimwe chete rinoshanda rinofanira kuiswa munzvimbo imwe chete kutanga, nezvikamu zvakajeka kuti zvive nechokwadi chekuzadzikiswa kwebasa racho.
(3) Ronga nzvimbo ye socket maererano nekuiswa chaiko
Iwo masokisi ese anotungamirwa kune mamwe ma module.Maererano nechimiro chaicho, kuitira kuti zvive nyore kuisa, nheyo yekuswededza inowanzoshandiswa kuronga nzvimbo yesokisi, uye inowanzova pedyo nemucheto webhodhi.
(4) Teerera kune kutungamirirwa kwesoketi
Iwo masokisi ese akananga, kana gwara rikadzoserwa, waya ichafanirwa kugadzirwa.Kune zvigadziko zveplagi, kutungamira kwesoketi kunofanirwa kunge kuri kunze kwebhodhi.
(5) Panofanira kunge pasina michina munzvimbo yeKeep Out
(6) Kunobva kuvhiringidza kunofanira kuchengetwa kure nemasekete anonetseka
Zviratidzo zvekumhanya-mhanya, wachi dzepamusoro-soro kana masaini ekuchinja-azvino zvese zvinokonzeresa uye zvinofanirwa kuchengetwa kure nemasekete anonzwisa tsitsi, akadai sereset maseketi uye analog maseketi.Flooring inogona kushandiswa kuvaparadzanisa.
3. PCB bhodhi wiring
(1) Mutsara wakafara saizi
Uhupamhi hwemutsara hunofanira kusarudzwa maererano nemaitiro uye ikozvino kutakura simba.Mutsetse mudiki mutsara haugone kuve diki pane diki mutsara wakafara wePCB board mugadziri.Panguva imwecheteyo, kutakura kwazvino kunovimbiswa, uye upamhi hwemutsara hwakakodzera hunowanzo kusarudzwa pa1mm/A.
(2) Mutsara wechiratidzo chakasiyana
Kune mitsara yekusiyanisa yakadai se USB neEthernet, cherechedza kuti mitsara inofanira kuva yehurefu hwakaenzana, yakafanana, uye pane imwe ndege, uye nzvimbo yacho inotarirwa ne impedance.
(3) Nyatsoteerera nzira yekudzoka yemitsara yepamusoro-speed
Mitsetse inomhanya-mhanya inokwanisa kugadzira mwaranzi yemagetsi.Kana nzvimbo yakaumbwa nenzira yekufambisa uye nzira yekudzoka yakakura zvikuru, imwe-turn-turn coil ichaumbwa kuti ibudise kupindira kwemagetsi, sezvinoratidzwa mumufananidzo 1. Nokudaro, paunenge uchifambisa, teerera kune nzira yekudzoka pedyo nayo.Iyo yakawanda-layer board inopiwa neine simba uye ndege yepasi, iyo inogona kunyatsogadzirisa dambudziko iri.
(4) Teerera kumutsara wechiratidzo cheanalogi
Mutsara wechiratidzo cheanalogi unofanirwa kuparadzaniswa kubva pachiratidzo chedhijitari, uye wiring inofanira kudziviswa kusvika painobvira kubva kune inopindira sosi (yakadai sewachi, DC-DC magetsi emagetsi), uye wiring inofanira kunge ipfupi sezvinobvira.
4. Electromagnetic kuenderana (EMC) uye chiratidzo chekuvimbika kwePCB mabhodhi
(1) Kugumisa kuramba
Kune mitsetse yepamusoro-yekumhanya kana mitsetse yedhijitari ine frequency yakakwira uye mitsetse yakareba, zviri nani kuisa inopikisa resistor munhevedzano kumagumo.
(2) Mutsara wekuisa chiratidzo wakabatanidzwa mukufanana nediki capacitor
Zviri nani kubatanidza mutsara wemutsara wechiratidzo kubva kune imwe nzvimbo pedyo nekugadzirisa uye kubatanidza picofarad capacitor duku.Ukuru hwe capacitor hunotarirwa maererano nesimba uye nguva yakawanda yechiratidzo, uye haifaniri kunge yakakura zvikuru, kana zvisina kudaro kutendeseka kwechiratidzo kuchakanganiswa.Kune masaini-anomhanyisa masaini masaini, akadai sekiyi yekupinza, diki capacitor ye330pF inogona kushandiswa, sezvakaratidzwa mumufananidzo 2.
Mufananidzo 2: PCB board design_input sign line yakabatana nediki capacitor
Mufananidzo 2: PCB board design_input sign line yakabatana nediki capacitor
(3) Kugona kutyaira
Semuenzaniso, chiratidzo chekuchinja chine hombe yekutyaira ikozvino inogona kufambiswa netriode;kune bhazi rine nhamba huru ye fan-outs, buffer inogona kuwedzerwa.
5. Screen kudhindwa kwePCB board
(1) Bhodhi zita, nguva, PN kodhi
(2) Kuisa mazita
Maka mapini kana makiyi masaini emamwe mainterfaces (senge arrays).
(3) Chikamu chinyorwa
Mapepa echikamu anofanirwa kuiswa munzvimbo dzakakodzera, uye dense component malebels anogona kuiswa mumapoka.Chenjerera kuti urege kuiisa panzvimbo yevia.
6. Maka poindi yePCB board
Kune PCB mabhodhi anoda muchina solder, maviri kusvika matatu Mako mapoinzi anoda kuwedzerwa.
Nguva yekutumira: Aug-11-2022