Izisombululo ze-PCB ze-4-Layer: I-EMC kunye neMpembelelo yeMfezeko yoMqondiso

Impembelelo yebhodi yesekethe enemigangatho emi-4 kunye nesithuba sombane ekuhambelaneni ne-electromagnetic kunye nemfezeko yomqondiso ihlala idala imingeni ebalulekileyo kwiinjineli kunye nabayili. Ukujongana nale miba ngokufanelekileyo kubalulekile ekuqinisekiseni ukusebenza kakuhle kunye nokusebenza kakuhle kwezixhobo zombane.Kule post yeblogi, siza kuxubusha indlela yokusombulula ingxaki yempembelelo ye-4-layer yebhodi yesekethe i-wiring kunye ne-spacing ye-maleko ehambelana ne-electromagnetic kunye nengqibelelo yesignali.

Xa kufikwa kwimpembelelo ye-4-layer yebhodi yesekethe kwindlela ehambelana ne-electromagnetic comppatibility (EMC) kunye nengqibelelo yomqondiso, enye yezona zinto zixhalabisayo kukungqubana okunokwenzeka.I-Crosstalk ludibaniso olungafunekiyo lwamandla ombane we-electromagnetic phakathi kwemikhondo ekufutshane okanye izinto ezikwi-PCB, ezibangela ukugqwetheka komqondiso kunye nokuthotywa. Ukugquma okufanelekileyo kunye nezithuba phakathi kweetrayisi kunokunciphisa kakhulu le ngxaki.

Ukwandisa i-EMC kunye nemfezeko yomqondiso, kubalulekile ukusebenzisa isoftware yoyilo enokwenza ukulinganisa okuchanekileyo kunye nohlalutyo.Ngokusebenzisa izixhobo zesoftware ezifana nezisombululi zentsimi ye-electromagnetic, abaqulunqi banokuvavanya ukubakho kwe-crosstalk kwindawo ebonakalayo ngaphambi kokuqhubeka neprototyping ebonakalayo. Le ndlela yonga ixesha, inciphisa iindleko, kwaye iphucula umgangatho woyilo jikelele.

Omnye umba omawuqwalaselwe kukhetho lwezixhobo zokubeka iPCB.Ukudityaniswa kwemathiriyeli ye-dielectric elungileyo kunye nobukhulu obufanelekileyo kunokuchaphazela kakhulu indlela yokuziphatha ye-electromagnetic yePCB. Izixhobo ezikumgangatho ophezulu ezinelahleko ephantsi ye-dielectric kunye nepropathi elawulwayo ye-impedance inceda ukomeleza imfezeko yomqondiso kunye nokunciphisa ukukhutshwa kwe-electromagnetic.

Ukongeza, isithuba somaleko ngaphakathi kwebhodi yesekethe ye-4 inokuchaphazela kakhulu i-EMC kunye nengqibelelo yomqondiso.Ngokunqwenelekayo, isithuba phakathi kweeleya ze-PCB ezimeleneyo kufuneka ziphuculwe ukuze kuncitshiswe uphazamiseko lwe-electromagnetic kunye nokuqinisekisa usasazo olufanelekileyo lwesignali. Imigangatho yoshishino kunye nezikhokelo zoyilo kufuneka zilandelwe xa kumiselwa izithuba ezifanelekileyo zomaleko kwisicelo esithile.

Ukujongana nale mingeni, ezi zicwangciso-qhinga zilandelayo zingasetyenziswa:

1. Ukubekwa kwecandelo ngononophelo:Ukubekwa kwecandelo okusebenzayo kunceda ukunciphisa i-crosstalk kwi-PCB. Ngokubeka izinto ngobuchule, abaqulunqi banokucutha ubude bezalathisi ezinesantya esiphezulu kunye nokunciphisa ukuphazamiseka okunokwenzeka kombane. Le ndlela ibaluleke kakhulu xa ujongene namacandelo abalulekileyo kunye neesekethe ezibuthathaka.

2. Uyilo lomaleko omhlaba:Ukufezekisa umaleko oqinileyo womhlaba yitekhnoloji ebalulekileyo yokulawula i-EMC kunye nokuphucula ingqibelelo yesiginali. Umaleko womhlaba usebenza njengekhaka, unciphisa ukusasazeka kwamaza e-electromagnetic kwaye uthintele ukuphazamiseka phakathi kweempawu zeempawu ezahlukeneyo. Kubalulekile ukuqinisekisa ubuchule obufanelekileyo bomhlaba, kubandakanywa ukusebenzisa ii-vias ezininzi ukudibanisa iindiza zomhlaba kwiileya ezahlukeneyo.

3. Uyilo lwe-stackup ye-multilayer:Uyilo olulolona lugciniweyo lubandakanya ukukhetha umaleko ofanelekileyo wolandelelwano lwesiginali, umhlaba, kunye nemigangatho yamandla. I-stackups eyilwe ngononophelo inceda ukufezekisa i-impedance elawulwayo, ukunciphisa i-crosstalk, kunye nokuphucula imfezeko yomqondiso. Izibonakaliso zesantya esiphezulu zinokuhanjiswa kwinqanaba elingaphakathi ukuphepha ukuphazamiseka kwimithombo yangaphandle.

Ubungcali beCapel ekuphuculeni i-EMC kunye nomqondiso wemfezeko:

Ngeminyaka eyi-15 yamava, iCapel iyaqhubeka nokuphucula iinkqubo zayo zokuvelisa kwaye iqeshe ubugcisa obuphezulu bokuphucula i-EMC kunye nomqondiso wengqibelelo. Iimbalasane zaseCapel zezi zilandelayo:
- UPhando oluBanzi:UCapel utyala imali kuphando olucokisekileyo ukuchonga iindlela ezivelayo kunye nemingeni kuyilo lwePCB ukuze uhlale uphambi kwegophe.
-Izixhobo ezikumgangatho ophezulu:I-Capel isebenzisa izixhobo zanamhlanje ukwenza ii-PCB eziguquguqukayo kunye nee-PCB eziguquguqukayo eziqinileyo, ziqinisekisa ukuchaneka okuphezulu kunye nomgangatho.
-Abasebenzi abanezakhono:I-Capel ineqela leengcali ezinamava kunye nobuchule obunzulu kwintsimi, inika ulwazi oluxabisekileyo kunye nenkxaso yokuphucula i-EMC kunye nomqondiso wengqibelelo.

Isishwankathelo

Ukuqonda ifuthe lebhodi yesekethe enemigangatho emi-4 kunye nesithuba sombane ekuhambelaneni kombane kunye nemfezeko yomqondiso kubalulekile kuyilo oluyimpumelelo lwesixhobo sombane. Ngokusebenzisa ukulinganisa okuphezulu, ukusebenzisa izixhobo ezifanelekileyo, kunye nokuphumeza izicwangciso ezisebenzayo zokuyila, iinjineli ziyakwazi ukunqoba le mingeni kwaye ziqinisekise ukusebenza kwe-PCB ngokubanzi kunye nokuthembeka.Ngamava amaninzi kunye nokuzibophezela ekugqweseni, uCapel uhlala ungumlingane othembekileyo ekunqobeni le mingeni. Ngokusebenzisa ubuchule obusebenzayo kubume bebhodi, ukusekwa kunye nomzila womqondiso, ngelixa besebenzisa ubuchule beCapel, abaqulunqi banokunciphisa i-EMI, baphucule imfezeko yomqondiso, kunye nokwakha iibhodi ezithembekileyo nezisebenzayo.