General pcb basic dhizaini maitiro anotevera:

Chekutanga gadziriro → pcb dhizaini dhizaini rondedzero runyorwa → mutemo kumisikidza → pcb dhizaini → wiring → wiring optimization uye silika skrini → network uye DRC cheki uye chimiro cheki → kuburitsa mwenje kudhirowa → mwenje kudhiza ongororo → pcb bhodhi kugadzirwa / proofing data → pcb bhodhi fekitori chirongwa EQ simbiso → chigamba dhata kuburitsa → chirongwa kupera.

1: Kugadzirira

Izvi zvinosanganisira kugadzirira mapakeji maraibhurari uye maschematics. asati Pcb dhizaini, we should first prepare the logic package of schematic SCH and the package library of PCB. Mapakeji maraibhurari anokwanisa kuuya nePADS, asi zvinonetsa kuwana maraibhurari akakodzera kazhinji. Zvakanakisa kugadzira ako epakeji maraibhurari zvichienderana neyakaenzana saizi ruzivo rweasarudzo akasarudzwa. In principle, the PCB packaging library should be done first, and then the SCH logic packaging should be done. PCB packaging library has high requirements, which directly affects the board installation; SCH zvine musoro zvekupakata zvinodikanwa hazvina kusununguka, sekureba sekutsanangurwa kwehunhu hwepini uye hukama hunoenderana nePCB yekuisa pamutsetse. PS: Cherekedza mapini akavanzika muraibhurari yakajairwa. Zvino ndiko kuronga kwekugadzirira, kwakagadzirira kuita pcb dhizaini.

2. Pcb mamiriro dhizaini

In ino nhanho, zvinoenderana nedunhu bhodhi saizi uye mechiniki Positioning, pcb bhodhi pamusoro inodhonzwa muPCBY dhizaini nharaunda, uye zvinongedzo, mabhatani / switch, sikuruu maburi, gungano maburi uye zvichingodaro zvinoiswa zvinoenderana nekumisikidza zvinodiwa. And fully consider and determine the wiring area and non-wiring area (such as how much of the screw hole around the non-wiring area).

3: tungamira network tafura

Inokurudzirwa kuendesa tafura yemambure mubhodhi furemu kutanga. Import a board enclosure in DXF format or EMN format

4: Rule setting

Mitemo inonzwisisika inogona kusetwa zvinoenderana neyakajeka pcb design. Iyi mitemo ndeya PADS yekumanikidza mamaneja, ayo anogona kushandiswa kudzikisira mutsetse upamhi uye nzvimbo dzakachengeteka chero nguva mune dhizaini maitiro. Nzvimbo dzisiri-dzinoenderana dzinoiswa neDRC mamaki panguva yeSUBSEQUENT DRC kuyedzwa.

The general rule setting is placed before the layout, because sometimes some fanout work needs to be completed during the layout, so the rules should be set well before the FANout. When the design project is larger, the design can be completed more efficiently. Ongorora: mitemo yakatarwa yekuita zvirinani uye nekukurumidza dhizaini, mune mamwe mazwi, kuitira nyore kwevagadziri. Zvakajairika Zvirongwa ndezvekuti: 1. Default mutsetse upamhi / mutsetse kupatsanurana kwezvinowanikwa zviratidzo. Sarudza uye gadzika gomba. 3. Gadza upamhi hwemutsara uye ruvara rwezvakakosha zviratidzo nemagetsi. 4. Bhodhi denderedzwa Zvirongwa.

5: pcb marongerwo

Inoda kubhadhara zvakanyanya kune, panzvimbo yezvinhu, zvikamu zvinofanirwa kutariswa kana saizi chaiyo (munzvimbo uye nekukwirira) uye chinzvimbo pakati pezvinhu, kuona kuti magetsi emagetsi uye kugadzirwa kwedunhu rekumisikidza bhodhi zviri nyore uye zvichikwanisika bonde panguva imwe chete, inofanirwa kunge iri pamberi pechivimbiso chirevo chiri pamusoro kuratidza, chakakodzera shanduko mudziyo, kuigadzira uye yakanaka, Semuenzaniso, mudziyo mumwe chete unofanirwa kuiswa zvakanyatsonaka uye nenzira imwechete, kwete “kutenderedzwa zvisina kurongeka”. Iyi nhanho ine chekuita nekuoma kwebhodhi rakabatana chimiro uye rinotevera wiring degree, kuda kushandisa rakakura basa kufunga kudaro. Kana marongero, anogona kugadzira yekutanga wiring kutanga kwete kunyatsosimbisa nzvimbo, kukwana kwakaringana.

6: wiring

Wiring ndiyo inonyanya kukosha maitiro muPCB dhizaini. Izvi zvichaita zvakananga kukanganisa mashandiro ePBB board. Mukuita kwePCB dhizaini, wiring kazhinji ine matatu nhanho dzekupatsanura: yekutanga kugovaniswa, inova ndiyo inonyanya kukosha pcb magadzirirwo. If the line is not cloth, get everywhere is flying line, it will be a unqualified board, can say that there is no entry.

Chechipiri ndiko kugutsikana kwekuita kwemagetsi. Uyu ndiwo muyero wekuyera kana rakadhindwa redunhu bhodhi rinokodzera. Izvi zviri mushure mekuparadzirwa, nyatso gadziridza iyo wiring, kuti igone kugona kwakanakisa kwemagetsi mashandiro. Ikozve kune aesthetics. Kana jira rako rewiring rakange rakabatana, zvakare hauna nzvimbo iyo inokanganisa mashandisirwo emagetsi, asi tarisa zvakapfuura zvakashata, wedzera zvine mavara, zvine mavara, zvinoverengera mashandisiro anoita mudziyo wako wemagetsi zvakanaka, uchiri marara mune vamwe ziso. Izvi zvinounza kusagadzikana kukuru kuyedza uye kugadzirisa. Wiring inofanirwa kuve yakashambidzika uye yakafanana, kwete crisscross isina mitemo. Zvese izvi zvinofanirwa kuzadzikiswa muchimiro chekuona mashandiro emagetsi uye kusangana nezvimwe zvinodiwa nemunhu, zvikasadaro ndeye kusiya icho chinhu.

Wiring inonyanya kuitiswa maererano nemisimboti inotevera: (1) Kazhinji, tambo yemagetsi netambo yepasi inofanirwa kuve newaya kutanga kuona mashandiro emagetsi ebhodhi redunhu. Mune chiyero chemamiriro ezvinhu tendera, kusvika pazvinobvira kuwedzera upamhi hwesimba remagetsi, waya yepasi, iyo yepamusoro tambo yepasi yakafara kupfuura tambo yemagetsi, hukama hwayo ndewe: waya yepasi> simba tambo> tambo yechiratidzo, kazhinji chiratidzo chemutsara nde: 0.2 ~ 0.3mm (anenge 8-12mil), iyo yakatetepa upamhi kusvika ku0.05 ~ 0.07mm (2-3mil), tambo yesimba kazhinji 1.2 ~ 2.5mm (50-100mil). Iyo PCB yedunhu redhijitari inogona kushandiswa sedunhu riine hupamhi pasi ma conductor, ndiko kuti, pasi network (analog dunhu pasi harigone kushandiswa nenzira iyi). (2) pamberi pezvinonyanya kudikanwa zvemutsara (senge yakakwira frequency tambo) wiring, yekuisa uye yekuburitsa padivi mutsetse inofanirwa kudzivirira iri pedyo yakafanana, kuti isaburitse kuratidzira kupindirana. Kana zvichidikanwa, tambo yepasi inofanira kuwedzerwa kuzviparadzanisa, uye wiring yezvikamu zviviri zviri padhuze inofanirwa kuve yakatendeseka kune imwe neimwe, izvo zviri nyore kuburitsa hutachiona hwehukama hwakafanana. (3) the oscillator shell is grounded, and the clock line should be as short as possible, and it can’t be everywhere. Pazasi peiyo wachi oscillation wedunhu, yakakosha yepamusoro-yekumusoro pfungwa wedunhu inofanirwa kuwedzera nzvimbo yevhu, uye haifanire kuenda kune mamwe mairaini mitsara, kuitira kuti iyo yakapoteredzwa magetsi magetsi inowanzoita zero;

(4) Shandisa 45 ° yakaputsika mutsetse wiring sezvazvinogona, kwete 90 ° yakatsemurwa mutsetse, kuitira kudzikisira mwaranzi yeiyo yepamusoro-frequency chiratidzo; (5) Chero tambo yechiratidzo haifanire kuita chiuno, kana chisingadzivike, chiuno chinofanira kunge chiri chidiki sezvinobvira; Mutsara wechiratidzo kuburikidza negomba unofanirwa kunge uri zvishoma sezvinobvira; (6) Tambo yakakosha inofanirwa kunge iri pfupi uye gobvu sezvinobvira, uye ivhu rekudzivirira rinofanira kuwedzerwa pamativi ese. (7) kana uchipfuudza maseru anonzwika uye masaini emumunda nematare akatetepa, zvinofanirwa kushandisa nzira ye “mutsara wepasi – chiratidzo – mutsetse wepasi”. (8) Pfungwa dzekuyedza dzinofanirwa kuve dzakachengeterwa makiyi akakosha kuti agadzirise kugadzirwa uye kugadzirisa kuyedza. (9) Mushure mekugadzirisa wiring kwapera, wiring inofanirwa kukwidziridzwa; Panguva imwecheteyo, mushure mekutanga kwecheki cheki uye cheki yeDRC iri chokwadi, waya yepasi inozadzwa munzvimbo isina wiring, uye nzvimbo hombe yemhangura rukoko inoshandiswa sewaya yepasi, uye nzvimbo dzisina kushandiswa dzakabatana nepasi se waya yepasi pane yakadhindwa bhodhi. Kana kuti riite rakawanda-bhodhi bhodhi, magetsi, tambo yekumisikidza yega yega inogara nhete.

(1) Mutsara Kazhinji, iyo tambo yemutsara upamhi ndeye 0.3mm (12mil), uye tambo yemagetsi upamhi ndeye 0.77mm (30mil) kana 1.27mm (50mil); Daro pakati petambo newaya uye pakati petambo nepad rinofanira kuve rakakura kudarika kana rakaenzana ne0.33mm (13mil). Mukushandisa kunoshanda, inofanirwa kutaridzirwa kuwedzera daro kana mamiriro ezvinhu achibvumidza; Kana huwandu hwenhabvu hukwirira, zvinokurudzirwa (asi hazvikurudzirwe) kushandisa tambo mbiri pakati pembambo dzeIC. Hupamhi hwetambo ndi 0.254mm (10mil), uye chinhambwe pakati petambo hachisi pasi pe 0.254mm (10mil). Pasi pemamiriro ezvinhu akasarudzika, kana pini yechigadzirwa iri dete uye hupamhi hwakatetepa, hupamhi hwemitsara uye nzvimbo yakatsemuka inogona kuderedzwa nenzira kwayo. (2) PAD (PAD) PAD (PAD) uye gomba rekushandura (VIA) izvo zvakakosha zvinodiwa ndeizvi: dhayamita yedisk kupfuura dhayamita yegomba rakakura kupfuura 0.6mm; Semuenzaniso, yepasipini pini mhando resistors, capacitors uye akasanganiswa maseketi, uchishandisa dhisiki / gomba saizi 1.6mm /0.8mm (63mil / 32mil), soketi, pini uye diode 1N4007, uchishandisa 1.8mm / 1.0mm (71mil / 39mil). Mukushandisa kunoshanda, inofanirwa kutemerwa zvinoenderana nesaizi yezvinhu chaizvo. Kana mamiriro ezvinhu aripo, saizi yepadhi inogona kuwedzerwa nenzira kwayo. Iko kumisikidzwa kwekumisikidza kwezvinhu zvakagadzirwa paPCB kunofanirwa kunge kuri kuita 0.2 ~ 0.4mm (8-16mil) yakakura kupfuura saizi chaiyo yezvipinha zvezvinhu zvacho. (3) Iyo perforation (VIA) kazhinji 1.27mm / 0.7mm (50mil / 28mil); Kana iyo wiring density yakakwira, iyo saizi saizi inogona kuderedzwa nenzira kwayo, asi isiri diki kwazvo, inogona kufunga 1.0mm / 0.6mm (40mil / 24mil). PAD uye VIA: ≥ 0.3mm (12mil) PAD uye PAD: ≥ 0.3mm (12mil) PAD uye TRACK: ≥ 0.3mm (12mil) TRACK uye TRACK: ≥ 0.3mm (12mil) ≥ 0.3mm (12mil) PAD uye VIA: ≥ 0.254mm (10mil) PAD uye TRACK: ≥ 0.254mm (10mil) PAD uye TRACK: ≥ 0.254mm (10mil) TRACK uye TRACK: ≥ 0.254mm (10mil)

7: wiring optimization and screen printing

“Hapana chakanakisa, chete zvirinani”! Kunyangwe uine simba rakawanda sei raunoisa mukugadzira, kana wapedza, tarisa pairi zvakare, uye iwe ucharamba uchinzwa kuti unogona kuchinja zvakanyanya. A general design mutemo wechigunwe ndeyekuti yakakwana wiring inotora zvakapetwa kareba sekutanga wiring. Mushure mekunzwa kuti hapana chinoda kuchinjwa, unogona kuisa mhangura. Kuisa mhangura kazhinji kuisa pasi waya (teerera kupatsanurwa kweanalog uye nedhijitari pasi), multilayer bhodhi ingangodawo kuisa simba. Zvekudhinda zvechidzitiro, isu tinofanirwa kutarisisa kuti isavharwe nemudziyo kana kubviswa negomba nepadhi. Panguva imwecheteyo, dhizaini yekutarisana nechinhu chepamusoro, pasi peIzwi rinofanira kunge riri girazi rinogadzira, kuti irege kuvhiringidza danho.

8: Network, DRC uye chimiro chekuongorora

Pamberi pekupenda kwechiedza, zvinowanzodiwa kuti utarise. Kambani yega yega ine yayo Yekutarisa Chinyorwa, inosanganisira izvo zvinodiwa musimboti, dhizaini, kugadzirwa uye zvimwe zvinongedzo. Izvi zvinotevera sumo kune maviri makuru ekuongorora mabasa anopiwa ne software. DRC cheki:

9: kuburitsa mwenje kupenda

Pamberi pekuburitsa kwechiedza kupenda, ita shuwa kuti iyo veneer ndiyo yazvino vhezheni yakapedzwa uye inosangana nezvinodiwa dhizaini. Iyo inoburitsa faira yemwenje kupenda inoshandiswa kugadzirwa kwebhodhi mufekitori yeplate, kugadzirwa kwesimbi mambure mune yesimbi mambure fekitori, uye yekugadzira maitiro faira mune yekumonera fekitori.

The output files are as follows (take the four-layer board as an example) : 1). Wiring layer: refers to the conventional signal layer, mainly wiring. Iwo akatumidzwa zita rekuti L1, L2, L3, Uye L4, uko L inomiririra iyo nhete yeiyo wiring layer.

2). Screen yekudhinda dura: inoreva iyo dura mune dhizaini gwaro iyo inopa ruzivo rwekugadziriswa kwescreen kudhinda. Kazhinji, pachave neepamusoro skrini yekudhinda uye yepazasi yekudhinda skrini kana paine zvishandiso kana mamaki kumusoro nepamusoro ezasi. Kutumidza: iyo yepamusoro dura inonzi SILK_TOP; Zita repasi iSILK_BOTTOM.