PCB design process and steps to improve wiring efficiency

Wiring ke karolo ea bohlokoa haholo ea PCB moralo, o tla ama ka kotloloho ts’ebetso ea PCB. Nakong ea moralo oa PCB, lienjineri tse fapaneng tsa moralo li na le kutloisiso ea tsona ea sebopeho sa PCB, empa lienjineri tsohle tsa moralo li lumellana ka mokhoa oa ho ntlafatsa ts’ebetso ea wiring, e sa boloke feela potoloho ea projeke ea moreki, empa hape e eketsa boleng bo netefalitsoeng le theko. Tse latelang li hlalosa ts’ebetso ea moralo oa PCB le mehato ea ho ntlafatsa ts’ebetso ea wiring.

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1, fumana palo ea le dikarolo PCB

Litekanyo tsa boto le likarolo tsa wiring li hloka ho khethoa qalong ea tšebetso ea moralo. Haeba moralo o hloka ts’ebeliso ea likarolo tsa grid (BGA) ea “high-density ball”, palo e tlase ea likarolo tsa wiring tse hlokahalang ho tsamaisa likarolo tsena e lokela ho tsotelloa. The number of wiring layers and the layering method directly affect the wiring and impedance of printed wiring. Boholo ba boto bo thusa ho tseba bopaka le bophara ba mola ho fihlela moralo o lakatsehang.

2. Melao ea moralo le meeli

Sesebelisoa sa othomathike ka bosona ha se tsebe hore na se etseng. Ho phethela mesebetsi ea ho tsamaisa, lisebelisoa tsa ho tsamaisa litsela li hloka ho sebetsa ka har’a melao le lithibelo tse nepahetseng. Different signal lines have different wiring requirements, and all special requirements of signal lines are classified, and different design classifications are different. Each signal class should have priority. Ha ntho e tlang pele e le holimo, molao o thata ho feta. Rules concerning trace width, maximum number of through-holes, parallelism, interaction between signal lines, and layer limits have a great impact on the performance of routing tools. Careful consideration of design requirements is an important step in successful wiring.

3. Sebopeho sa likarolo

Lokisa lits’ebetso tsa kopano le melao ea meralo ea tlhahiso (DFM) ho beha litšitiso ho likarolo tsa karolo. If the assembly department allows components to move, the circuit can be optimized to automate wiring more easily. Melao le lithibelo tse hlalositsoeng li ama moralo oa moralo.

4. Fan tsoa moralo

Nakong ea karolo ea moralo oa fan, bakeng sa lisebelisoa tse iketsang tsa marang-rang tse hokelang lithakhisa tsa karolo, pini e ngoe le e ngoe ea sesebelisoa sa holim’a metsi e lokela ho ba le bonyane lesoba le le leng e le hore boto e khone ho etsa lera la kahare ha ho hlokahala likhokelo tse ling. Khokahano, liteko tsa inthaneteng (ICT) le phetolo ea potoloho.

For the automatic routing tool to be most effective, the largest possible through-hole size and printed line must be used, with an interval of 50 mils preferred. Sebelisa mofuta oa VIA o eketsang palo ea litsela. Ha u etsa meralo ea fan, nahana ka liteko tsa inthanete tsa potoloho. Lisebelisoa tsa liteko li ka ba theko e boima ‘me hangata li odaroa ha li se li loketse tlhahiso e felletseng. Ho se ho le morao haholo hore o nahane ka ho eketsa li-node ho fihlela liteko tsa 100%.

5, wiring ea letsoho le ts’ebetso ea senotlolo

Le ha sengoloa sena se shebane le ho tsamaisa ka boiketsetso, ho tsamaisoa ka matsoho ke mohato oa bohlokoa ho moralo oa hona joale le oa nakong e tlang oa PCB. Tsamaiso ea matsoho e thusa lisebelisoa tse iketsang tsa ho tsamaisa litsela. Ho sa tsotelehe palo ea lipontšo tse mahlonoko, lipontšo tsena li ka tsamaisoa pele, ka letsoho, kapa tsa sebelisoa hammoho le lisebelisoa tse iketsetsang tsela. Lipontšo tse mahlonoko hangata li tlameha ho raloa ka hloko ho fihlela ts’ebetso e batloang. Ho bonolo haholo bakeng sa basebetsi ba boenjiniere ho lekola likhoele tsa motlakase kamora hore wiring e phetheloe. Ts’ebetso ena e batla e le bonolo. Kamora tlhahlobo, terata e tsitsitse, ‘me matšoao a mang a itsamaisa ka bo eona.

6, jarolla ka ho iketsa wiring

Wiring ea lipontšo tse mahlonoko e hloka ho nahanoa ka ho laola mekhahlelo e meng ea motlakase nakong ea wiring, joalo ka ho fokotsa inductance e abuoeng le EMC, mme ho ts’oaroa ka wiring bakeng sa matšoao a mang hoa tšoana. Barekisi bohle ba EDA ba fana ka mekhoa ea ho laola mekhahlelo ena. Boleng ba wiring e ikemetseng bo ka netefatsoa ho isa bohōleng bo itseng kamora ho tseba mekhahlelo ea ho kenya sesebelisoa sa wiring ka boiketsetso le tšusumetso ea bona ho wiring.

7, ponahalo ea boto

Moralo oa pejana o ne o lula o shebile ponahalo ea boto, empa joale e fapane. Boto ea potoloho e iketselitseng ka boeona ha e ntle ho feta moralo oa matsoho, empa e fihlela litlhokahalo tsa litšobotsi tsa elektroniki mme e netefatsa bots’epehi ba moralo.

Bakeng sa lienjineri tsa moralo, theknoloji e sa sebetseng ha ea lokela ho ahloloa ke palo ea likarolo le lebelo feela. Ke feela ha palo ea likarolo e lekana le lebelo la lets’oao le maemo a mang, sebaka se senyenyane, likarolo tse fokolang, theko e tlase. Boto ea PCB e etselitsoe hantle ho netefatsa ts’ebetso e ntle le botle. Hona ke monghali.