Lapho uklama i-PCB, omunye wombuzo oyisisekelo okufanele ucabangele ukusebenzisa izidingo zemisebenzi yesekethe kudingeka ukuthi ungqimba lwe-wiring, bese uphrinta izindiza zamandla, ukuphrinta izindiza zamandla, ubuqotho be-EMI, EMI, EMI, EMI, EMI.
Ngemiklamo eminingi, kunezidingo eziningi eziphikisanayo kwizidingo zokusebenza kwe-PCB, izindleko eziqondiwe, ubuchwepheshe bokukhiqiza, kanye nobunzima bohlelo. Umklamo we-PCB we-lamonated uvame ukuba yisinqumo sokuyekethisa ngemuva kokubheka izici ezahlukahlukene. Imibuthano yedijithali ephezulu yedijithali nemijikelezo ye-whisker imvamisa yakhelwe ngamabhodi we-multilayer.
Nazi izimiso eziyisishiyagalombili zokwakheka kwe-cascading:
1. Disiyalo
Ku-PCB ye-multilayer, kuvame ukuba nezimpawu zesiginali (ama), ukuhanjiswa kwamandla (p) indiza neplanethi (GND). Indiza yamandla nendiza yomhlabathi imvamisa izindiza eziqinile ezakhiwe ezizonikeza indlela enhle yokubuyisa yamanje yamanje yendawo yamanje yezimpawu zesiginali eziseduze.
Izendlalelo eziningi zesiginali zitholakala phakathi kwemithombo yamandla noma izingqimba zereferensi yenhlabathi, zakha imigqa ye-symmetric noma ye-asymmetric. Izendlalelo eziphezulu nezangaphansi ze-PCB ye-multilayer zivame ukusetshenziswa ukubeka izingxenye kanye nenani elincane le-wiring. I-wiring yalezi zimpawu akufanele ibe yinde kakhulu ukunciphisa imisebe eqondile ebangelwa i-wiring.
2. Thola indiza eyodwa yamandla ereferensi
Ukusetshenziswa kwama-capacitors aqothulayo kuyindlela ebalulekile yokuxazulula ubuqotho bemandla. Ama-capacitors wokuwa angabekwa phezulu nangaphansi kwe-PCB. Umzila we-capacitor yokuzithoba, i-soler pad, futhi i-hole Pass izothinta kakhulu umphumela we-capacitor yokukhohlisa, edinga ukuthi umklamo kufanele ube mfushane futhi unobubanzi ngangokunokwenzeka, futhi ucingo oluxhunywe emgodini kufanele futhi lube mfushane ngangokunokwenzeka. Isibonelo, kwisekethe sedijithali enesivinini esiphakeme, kungenzeka ukubeka i-capacitor ekhohlisayo ku-PCB ephezulu ye-PCB, unikeze ungqimba wesifunda esinejubane (njengeprosesa 3 njengesendlalelo sesigcawu esinejubane ledijithali.
Ngaphezu kwalokho, kuyadingeka ukuthi uqinisekise ukuthi umzila wesiginali oqhutshwa yidivaysi efanayo yedijithali ephezulu ethatha ungqimba wamandla afanayo nepline yesethenjwa, futhi lolu handla lwamandla luyinto yokunikeza amandla yedivayisi yedijithali ephezulu yedijithali.
3. Thola indiza yamandla amaningi
Indiza yesethenjwa yamandla amaningi izohlukaniswa ibe yizindawo eziqinile eziningana ezinama-voltages ahlukile. Uma ungqimba lwesiginali lusondelene nesendlalelo esinamandla amaningi, isiginali yamanje engxenyeni yesiginali eseduze izohlangabezana nendlela yokubuyisa engagculisi, ezoholela ezingubeni zokubuyisa indlela.
Ngezimpawu ezinesivinini sejubane ledijithali, lo mklamo wendlela yokubuyisa engenangqondo ungadala izinkinga ezinkulu, ngakho-ke kuyadingeka ukuthi i-wiring yesiginali yedijithali ephezulu kufanele ibe kude nendiza yereferensi yamandla amaningi.
4.Nquma izindiza eziningi zereferensi zomhlaba
Izindiza eziningi zereferensi yomhlaba (izindiza eziphansi) zinganikeza indlela enhle yokubuyisa yamanje, enganciphisa imodi evamile ye-EML. Indiza yomhlaba nendiza yamandla kufanele ihlanganiswe ngokuqinile, futhi ungqimba lwesiginali kufanele luhlanganiswe ngokuqinile endizeni eseduze nesethenjwa. Lokhu kungatholakala ngokunciphisa ubukhulu be-medium phakathi kwezendlalelo.
5. Inhlanganisela ye-wiring wiring ngokunengqondo
Lezi zingqimba ezimbili ze-SPNAND zendlela yesiginali zibizwa ngokuthi "inhlanganisela ye-wiring". Inhlanganisela engcono kakhulu ye-wiring yakhelwe ukugwema ukubuyisa okugelezayo okuvela kwireferensi eyodwa kuya kwenye, kepha esikhundleni salokho kugeleza iphuzu elilodwa (ubuso) yereferensi eyodwa. Ukuze uqedele i-wiring eyinkimbinkimbi, ukuguqulwa kwe-wiring akunakugwenywa. Lapho isinali liguqulwa phakathi kwezendlalelo, ukubuya kwamanje kufanele kuqinisekwe ukugeleza kahle kusuka kwireferensi eyodwa kuya kwenye. Emklamweni, kunengqondo ukubheka izingqimba eziseduze njengenhlanganisela ye-wiring.
Uma indlela yesiginali idinga ukuhambisa izingqimba eziningi, imvamisa akuyona into efanelekile yokuyisebenzisa njengenhlanganisela ye-wiring, ngoba indlela ngokusebenzisa izingqimba eziningi akuyona i-patch ye-patch ye-return. Yize intwasahlobo ingancishiswa ngokubeka i-capacitor edubula eduze komgodi noma ukunciphisa ubukhulu be-medium phakathi kwezindiza zereferensi, akulona umklamo omuhle.
6.Ukusetha ukuqondiswa kwentambo
Lapho ukuqondiswa kwe-wiring kusethwe engxenyeni efanayo yesiginali, kufanele kuqinisekiswe ukuthi izinkomba eziningi zokunikela ngezintambo ziyaguquguquka, futhi kufanele kube yi-orthogonal ezinkombeni ze-wiring zezendlalelo zesiginali eziseduze. Isibonelo, ukuqondiswa kwentambo kongqimba olulodwa lwesiginali kungasethelwa ku-"Y-axis" ukuqondiswa, futhi ukuqondiswa kwentambo kolunye ungqimba lwesiginali oluseduze kungasetwe ku-"X-Axis".
7. Aukhiphe isakhiwo sesendlalelo
Ingatholakala kusuka kwi-PCB Lamination eklanyelwe ukuthi i-Classical Lamination Design icishe ibe yizo zonke izingqimba, kunezendlalelo ezingajwayelekile, le nto ibangelwa yizici ezahlukahlukene.
Ukusuka kwinqubo yokukhiqiza yebhodi yokujikeleza ephrintiwe, singazi ukuthi lonke ungqimba oluphethe ebhodini lesekethe, okuqukethwe kwe-core ungqimba ngokuvamile i-cladding board, lapho ungqimba oluphelele lwebhodi yesekethe eliphrintiwe
Ngisho namabhodi wesifunda ephrintiwe abhaliwe anezindleko zezinzuzo. Ngenxa yokungabikho kwengqimba ye-Media and Copper Clodding, izindleko zezendlalelo ezinamanani angajwayelekile ze-PCB Raw Izinto eziphansi kancane kunezendlalelo zezendlalelo ze-PCB. Kodwa-ke, izindleko zokulungiselela ze-PCB engajwayelekile ziphakeme kakhulu kunaleso se-PCB enobungqingili ngoba i-PCB engaqondakali idinga ukwengeza inqubo yokuvuselelwa kwe-latenandid yorer Uma kuqhathaniswa nokwakheka okujwayelekile kwesendlalelo, ukwengeza ukufakwa kwethusi ngaphandle kwesakhiwo sesendlalelo esiyisisekelo kuzoholela ekusebenzeni kahle kokukhiqiza kanye nomjikelezo wokukhiqiza omude. Ngaphambi kokugcona, ungqimba oluyinhloko lwangaphandle ludinga ukucutshungulwa okwengeziwe, okukhulisa ubungozi bokumabala nokuzenzisa ungqimba lwangaphandle. Ukuphathwa okwandisiwe kwangaphandle kuzokhulisa kakhulu izindleko zokukhiqiza.
Lapho izingqimba zangaphakathi nezangaphandle zebhodi yesekethe eliphrintiwe ziphonswe ngemuva kwenqubo yokuhlanganisa isizungu esinemibuthano, ukungezwani okuhlukile kokushisa kuzokhiqiza amazinga ahlukile wokugoba ibhodi yesekethe ephrintiwe. Futhi njengoba ubukhulu bebhodi bukhuphuka, ubungozi bokugoba ibhodi yesifunda ephrintiwe ephrintiwe enezinhlaka ezimbili ezahlukene. Amabhodi wesifunda angajwayelekile kulula ukugoba, ngenkathi ngisho namabhodi wesifunda ephrintiwe aphelile angakugwema ukugoba.
Uma ibhodi yesekethe ephrintiwe yenzelwe inani elingajwayelekile lezendlalelo zamandla kanye nenombolo yezendlalelo zesiginali, indlela yokungeza izingqimba zamandla ingathathwa. Enye indlela elula ukwengeza ungqimba oluyisisekelo phakathi kwesitaki ngaphandle kokushintsha ezinye izilungiselelo. Okusho ukuthi, i-PCB inentambo ngenani lezendlalelo ezingajwayelekile, bese ungqimba oluyisisekelo luphindwe kabili phakathi.
8. Ukucatshangelwa Kwezindleko
Ngokwezindleko zokukhiqiza, amabhodi wesifunda ama-multilayer nakanjani abiza kakhulu kunamabhodi wesifunda elilodwa futhi aphindwe kabili e-PCB endaweni efanayo, kanye nezendlalelo eziningi, kukhuphuka izindleko. Kodwa-ke, lapho ubheka ukugcwaliseka kwemisebenzi yesekethe kanye ne-miniaturization yesekethe yesekethe, ukuqinisekisa ubuqotho besiginali, i-EML, EMC kanye nezinye izinkomba zokusebenza, amabhodi wesifunda ahlukahlukene kufanele asetshenziswe ngangokunokwenzeka. Sekukonke, umehluko wezindleko phakathi kwamabhodi wesifunda ahlukahlukene kanye nongqimba olulodwa namabhodi wesifunda amabili akuphezulu kakhulu kunalokho obekulindelwe