Iyo CCL (Copper Clad Laminate) ndeyekutora nzvimbo yakasara paPCB sereferensi nhanho, woizadza nemhangura yakasimba, inozivikanwawo sekudururwa kwemhangura.
Kukosha kweCCL sekuzasi:
- kuderedza pasi impedance uye kunatsiridza anti-kupindira kugona
- kuderedza kudonha kwevoltage uye kunatsiridza kugona kwemagetsi
- yakabatana pasi uye inogonawo kuderedza nzvimbo yechiuno.
Sechinhu chakakosha chinongedzo chePCB dhizaini, zvisinei neyemumba Qingyue Feng PCB dhizaini software, zvakare vamwe vatorwa Protel, PowerPCB vakapa yakangwara mhangura basa, saka mashandisiro emhangura yakanaka, ini ndichagovera dzimwe pfungwa dzangu newe, tariro yekuunza. mabhenefiti kuindasitiri.
Zvino kuitira kugadzira PCB welding kusvika kure sezvinobvira pasina deformation, vazhinji vanogadzira PCB vanozodawo kuti PCB mugadziri azadze nzvimbo yakavhurika yePCB nemhangura kana grid-yakafanana newaya yepasi. Kana iyo CCL ikasabatwa nemazvo, inotungamira kune zvimwe zvakaipa mhedzisiro. Ko iyo CCL "yakanaka pane kukuvadza" kana "yakanyanya kuipa pane kunaka"?
Pasi pemamiriro epamusoro frequency, ichashanda pane yakadhindwa yedunhu bhodhi wiring capacitance, kana kureba kuri kupfuura 1/20 yeruzha frequency inoenderana wavelength, ipapo inogona kuburitsa iyo antenna mhedzisiro, ruzha rwunobva rwabuda kuburikidza newaya, kana. kune yakashata grounding CCL muPCB, CCL yakava mudziyo wekutapurirana ruzha, saka, mune yakakwira frequency redunhu, usatenda kuti kana ukabatanidza waya yepasi kune imwe nzvimbo, iyi ndiyo "ivhu", Chaizvoizvo. , inofanira kunge iri shoma kudarika nzvimbo ye λ/20, rova gomba mu cabling uye multilayer pasi ndege "yakanyatsogadziriswa". Kana iyo CCL ichibatwa zvakanaka, haingogone kuwedzera ikozvino, asiwo kutamba maviri maviri ekudzivirira kupindira.
Pane nzira mbiri dzekutanga dzeCCL, dzinoti nzvimbo hombe yemhangura yemhangura uye mesh mhangura, inowanzo bvunzwawo, ndeipi yakanyanya kunaka, zvakaoma kutaura. Sei? Nzvimbo yakakura yeCCL, nekuwedzera kwezvino uye kudzivirira basa rehuviri, asi kune nzvimbo yakakura yeCCL, bhodhi inogona kutenderera, kunyange kuputika kana kuburikidza nemafungu ekutengesa. inoputika mhangura,Iyo mesh CCL inonyanya kudzivirira, kuwedzera basa rezvino rinodzikiswa, Kubva pakuona kwekupisa kupisa, grid ine mabhenefiti (inoderedza kupisa kwemhangura) uye yakaita rimwe basa rekudzivirira kwemagetsi. Asi zvinofanirwa kutaurwa kuti giredhi inogadzirwa nekuchinjana kutungamira kwekumhanya, isu tinoziva kuti mutsara wakafara weiyo frequency yebasa redunhu bhodhi rine inowirirana "magetsi" kureba kwe (saizi chaiyo yakakamurwa nekushanda frequency yedhijitari inoenderana. kakawanda, mabhuku ekrete), kana nguva yekushanda isiri yakakwirira, zvichida basa remitsara yegridi haisi pachena, kamwe chete urefu hwemagetsi uye kushanda kwehuwandu hwekushanda, hwakaipa kwazvo, uchaona kuti dunhu harizoshandi zvakanaka, emission signal interference system inoshanda kwese kwese.Naizvozvo, kune avo vanoshandisa grid, zano rangu nderekusarudza zvinoenderana nemamiriro ekushanda edhizaini bhodhi redhizaini, pane kubatisisa chinhu chimwe chete.Naizvozvo, yakakwirira frequency circuit anti-interference zvinodiwa zve Multi-purpose grid, low frequency circuit ine high current circuit uye mamwe anowanzoshandiswa akazara artificial copper.
PaCCL, kuitira kuti iite kuti iite zvatinotarisira kuita, ipapo maCCL maficha anofanirwa kutarisisa kuti ndeapi matambudziko:
1. Kana pasi PCB yakawanda, vane SGND, AGND, GND, zvichingodaro, zvichange zvichienderana nechinzvimbo chePCB bhodhi chiso, zvichiteerana kuita iyo huru "ivhu" sereferensi yenzvimbo yeCCL yakazvimirira, kudhijitari uye. analogi kuparadzanisa mhangura , asati abudisa CCL, kutanga kune zvose, tambo dzakashinga dzinoenderana netambo: 5.0 V, 3.3 V, nezvimwewo, nenzira iyi, nhamba yezvimiro zvakasiyana inoumbwa yakawanda deformation chimiro.
2. Kune imwe nzvimbo yekubatanidza nzvimbo dzakasiyana, nzira ndeyekubatanidza kuburikidza ne0 ohm resistance kana magnetic bead kana inductance;
3. CCL pedyo nekristaro oscillator. Iyo crystal oscillator mudunhu ndeye yakakwira frequency emission sosi. Iyo nzira ndeyekukomberedza kristaro oscillator nemhangura cladding uye wobva wagadzika goko rekristaro oscillator zvakasiyana.
4.Dambudziko renzvimbo yakafa, kana ichinzwa yakakura kwazvo, wobva wawedzera pasi kuburikidza pairi.
5. Pakutanga kwe wiring, inofanira kubatwa zvakaenzana kune pasi wiring, tinofanira kuisa pasi zvakanaka kana wiring, hatigoni kuvimba nekuwedzera vias kana wapedza CCL kubvisa pini yepasi yekubatanidza, izvi zvinonyanya kukosha. zvakaipa.
6. Zviri nani kuti usava neAngle inopinza pabhodhi (= 180 °), nokuti kubva pakuona kwe electromagnetism, izvi zvinogadzira antenna inotumira, saka ndinokurudzira kushandisa micheto yearc.
7. Multilayer yepakati layer wiring spare area, usaite mhangura, nekuti zvakaoma kuita kuti CCL "idzikame"
8.iyo simbi mukati memidziyo, senge simbi radiator, simbi yekusimbisa tambo, inofanira kuwana "yakanaka pasi".
9.Iyo inotonhorera yesimbi block ye-tatu-terminal voltage stabilizer uye bhandi rekuzviparadzanisa nepasi pedyo nekristaro oscillator inofanira kunge yakanyatsodzika. Mushoko: iyo CCL paPCB, kana dambudziko repasi rakabatwa nemazvo, rinofanira kunge "rakanaka pane rakaipa", rinogona kuderedza chiratidzo chemutsetse wekudzokera kumashure, kuderedza chiratidzo chekunze kwemagetsi kupindira.