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Kuongororwa kweTekinoroji yeKudhonza Musana muKugadzira PCB Yekukurumidza
2020-04-08
Sei tichifanira kugadzira Backdrill design?
Chekutanga, zvikamu zvekubatanidza kwekukurumidza kwekubatanidza ndeizvi:
① Kutumira chip yekupedzisira (kurongedza uye PCB kuburikidza)
② Waya dzePCB dzekadhi repasi
③ Chinobatanidza kadhi repasi
④ Waya dzePCB dzemusana
⑤ Chinobatanidza kadhi repasi rakapesana
⑥ Waya dzePCB dzekadhi repadivi rakapesana
⑦ AC coupling capacitance
⑧ Chip yekugamuchira (kurongedza uye PCB kuburikidza)
Kubatana kwechiratidzo chekumhanya kwepamusoro-soro kwezvigadzirwa zvemagetsi kwakaoma, uye matambudziko ekusawirirana kweimpedance anowanzo kuitika panzvimbo dzakasiyana dzekubatanidza zvikamu, zvichikonzera kubuda kwechiratidzo.
Nzvimbo dzakajairika dzekusagadzikana kweimpedance muzvinobatanidza zvinomhanya zvakanyanya:
(1) Kurongedza machipisi: Kazhinji, upamhi hwePCB wiring mukati mechikamu chekurongedza machipisi hwakatetepa kupfuura hwePCB yenguva dzose, zvichiita kuti kudzora impedance kuve kwakaoma;
(2) PCB via: PCB via inowanzo kuve capacitive effects ine low characteristic impedance, uye inofanira kunge yakanyanya kutariswa uye yakagadziriswa mukugadzirwa kwePCB;
(3) Chinobatanidza: Dhizaini yechinobatanidza chemhangura mukati mechinobatanidza inoenderana nekuvimbika kwemuchina uye mashandiro emagetsi, saka inofanira kutsvaga chiyero pakati pezviviri izvi.
PCB via inowanzogadzirwa semaburi anoburitswa (kubva pamusoro kusvika pasi). Kana mutsetse wePCB unobatanidza via ukaendeswa pedyo nepamusoro, "kupatsanurwa" kuchaitika padivi pePCB connection link, zvichikonzera kuratidzwa kwechiratidzo uye zvichikanganisa kunaka kwechiratidzo. Kukanganisa uku kune simba guru pazviratidzo zvinomhanya zvakanyanya.
Kutanga Nzira Dzekugadzirisa Backdrill
Tekinoroji yekuboora kumashure inoreva kushandiswa kwenzira dzekuboora dzakadzika, uchishandisa nzira yechipiri yekuboora kuboora madziro egomba reStub reconnector kana chiratidzo kuburikidza.
Sezvakaratidzwa mumufananidzo uri pazasi, mushure mekunge gomba remuchina ragadzirwa, Stub yakawandisa yegomba remuchina wePCB inobviswa nekuboorwa kwechipiri kubva "kurutivi rwekumashure". Ehe, dhayamita yebhatiri rekumashure rinofanira kunge rakakura kupfuura saizi yegomba remuchina, uye mwero wekushivirira kudzika kwemaitiro ekuboorwa unofanirwa kunge wakavakirwa panheyo yekuti "usakuvadze kubatana kuri pakati pegomba rePCB newaya", zvichiita kuti "hurefu hwestub yasara huve hudiki sezvinobvira", iyo inonzi "kuboorwa kwekudzika".
Dhayagiramu yechidimbu cheBackDrill chinoburitswa neburi
Zviri pamusoro apa idhayagiramu yechikamu cheBackDrill chinobuda nepaburi. Rutivi rweruboshwe idhayagiramu yakajairika yeburi rinobuda nepaburi, kurudyi kune dhayagiramu yeburi rinobuda nepaburi mushure meBackDrill, zvichiratidza kuboorwa kubva pasi kusvika padandara rechiratidzo uko trace iri.
Tekinoroji yekuboorera kumashure inogona kubvisa simba remaparasite rinokonzerwa nemaburi emadziro, zvichiita kuti waya nesimbi zvienderane zvakanaka paburi riri muchiteshi, zvichideredza kuratidzwa kwechiratidzo, uye nokudaro zvichivandudza kunaka kwechiratidzo.
Parizvino Backdrill ndiyo tekinoroji inodhura zvakanyanya iyo inonyanya kushanda pakuvandudza mashandiro ekutumira machaneli. Kushandiswa kwetekinoroji yekuboorera kumashure kuchawedzera mutengo wekugadzira PCB kusvika pamwero wakati.
Kupatsanurwa kweKuboorera Kwemusana Kwebhodhi Rimwe Chete
Kuboorera kumashure kune mhando mbiri: kuboorera kumashure kune divi rimwe chete uye kuboorera kumashure kune mativi maviri.
Kuboorera kwemativi maviri kunogona kukamurwa kuita kuchera kumashure kubva pamusoro kana pasi. Buri rePIN re connector plug pin rinogona kungoboorerwa kumashure kubva kudivi rakatarisana nechiso pane chinongedzo. Kana zvinongedzo zvesignal zvinomhanya zvakanyanya zvakarongwa pamusoro nepazasi pePCB, kuchera kumashure kwemativi maviri kunodiwa.
Zvakanakira zvekuboorera kumashure
1) Deredza kukanganiswa kweruzha;
2) Kuvandudza kuvimbika kwechiratidzo;
3) Ukobvu hwebhodhi remunharaunda hunoderera;
4) Deredza kushandiswa kwemuchina wekuvhara/kupofumadza kuti uderedze kuoma kwekugadzirwa kwePCB.
Basa rekuboora musana nderei?
Basa rekuboorera kumashure nderekuboorera zvikamu zvine maburi asina kubatana kana basa rekutumira kuti zvisaratidzike, kupararira, kunonoka, nezvimwewo mukutumirwa kwechiratidzo nekukurumidza.
Maitiro ekuboorera kumashure
a. Kune maburi ekumisa paPCB, ayo anoshandiswa pakuboorera kwekutanga uye pakuboorera kwekutanga kwePCB;
b. Pcb inoiswa nemagetsi mushure mekuboorwa kwegomba rekutanga, uye firimu rakaoma rinovhara gomba rekuisa gomba risati raiswa nemagetsi;
c. Gadzira pateni yekunze paPCB yakaputirwa nemagetsi;
d. Ita patani yemagetsi paPCB mushure mekuumba patani yekunze kwechikamu;
e. Shandisa gomba rekuisa nzvimbo rakashandiswa neboka rekutanga rekuboorera kumashure, uye shandisa banga rekuboorera kumashure;
f. Geza gomba rekumashure rakaboorwa nemvura kubvisa marara ese asara ari mukati.
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