Pcb bhodhi dhizaini inoda kupa ruzivo:

(1) Schematic dhizaini: yakazara yemagetsi gwaro fomati iyo inogona kuburitsa chaiyo netlist (netlist);

(2) Mashini saizi: kupa kuzivikanwa kwenzvimbo yakatarwa uye kutungamira kwechigadziro chekumisikidza, pamwe nekuzivikanwa kwenzvimbo yakatarwa yekukwirira nzvimbo nzvimbo;

(3) BOM rondedzero: inonyanya kugadza uye yekutarisa yakatsanangurwa pasuru ruzivo rweiyo michina pane schematic dhizaini;

(4) Wiring gwara: tsananguro yezvakanangana nezvinodiwa zvehumwe masaini, pamwe neimedance, lamination uye zvimwe zvigadzirwa zvekugadzira.

Iyo yakakosha dhizaini maitiro epcb board iri seinotevera:

Gadzirira – & gt; Pcb mamiriro dhizaini – & GT; Pcb mamiriro – & GT; Wiring – & gt; Kugadzirisa kugadziridza uye skrini -> Network uye DRC kuongororwa uye kuongorora kwechimiro -> Pcb bhodhi.

1: Kugadzirira kwekutanga

1) Izvi zvinosanganisira kugadzirira zvemaraibhurari uye maschematics. “Kana uchida kuita chinhu chakanaka, unofanira kutanga warodza maturusi ako.” Kuti ugadzire yakanaka bhodhi, pamusoro pekugadzira mazano, iwe unofanirwa kudhirowa zvakanaka. Usati waenderera nePCB dhizaini, iwe unofanirwa kutanga wagadzirira iyo schematic SCH chikamu raibhurari uye iyo PCB chikamu raibhurari (iri ndiro danho rekutanga – rakakosha kwazvo). Chikamu chemaraibhurari chinogona kushandisa maraibhurari anouya neProtel, asi zvinowanzoomera kuwana chaicho. Zviri nani kuvaka rako raibhurari yezvinhu zvinoenderana neyakaenzana saizi dhata kune yako yaunosarudza chishandiso.

Mukutaura, ita raibhurari yezvinhu zvePCB kutanga, uyezve maSch. Pcb chinoumba raibhurari ine yakanyanya kudiwa, iyo inokanganisa zvakananga kuiswa kwePCB. Iyo SCH yezvinhu raibhurari haina kurerukirwa, chero bedzi iwe uchichenjerera kutsanangura pini hunhu uye kwavo kunyorerana kune PCB zvikamu.

PS: Cherekedza mapini akavanzika muraibhurari yakajairwa. Zvino kunouya kurongeka kwekugadzira, uye kana yagadzirira, dhizaini yePBB inogona kutanga.

2) Paunenge uchigadzira raibhurari raibhurari, cherekedza kana hoko dzacho dzakabatana nezvinobuda / zvinobuda pcb board uye tarisa raibhurari.

2. Pcb mamiriro dhizaini

Iyi nhanho inokwevera pcb pamusoro pePCB dhizaini nharaunda maererano neyakagadziriswa bhodhi zviyero uye akasiyana masisitimu nzvimbo, uye inoisa zvinoda zvinongedzo, mabhatani / switch, nixie machubhu, zvinongedzo, zvigadzirwa, uye zvinobuda zvinoenderana nezvinodiwa pakuisa. , sikuruu gomba, gomba rekumisikidza, nezvimwewo, funga zvizere uye sarudza wiring nzvimbo uye isiri-wiring nzvimbo (senge chiyero cheguru gomba isiri-wiring nzvimbo).

Kunyanya kutariswa kunofanirwa kubhadharwa kune chaiko saizi (inogarwa nharaunda nekukwirira) kwezvinhu zvekubhadhara, chinzvimbo chakatarisana pakati pezvinhu – saizi yenzvimbo, uye pamusoro pakaiswa michina yekuona mashandiro emagetsi ebhodhi redunhu. . Ndichiri kuona kugona nekureruka kwekugadzirwa uye kumisikidzwa, zvigadziridzo zvakafanira zvinofanirwa kuitwa kumidziyo kuti igare yakachena apa ichiona kuti zvirevo zviri pamusoro izvi zvinoonekwa. Kana mudziyo mumwe chete ukaiswa zvakanaka uye nenzira imwechete, haugone kuiswa. Icho chigamba. “

3. Marongerwo pcb

1) Ita shuwa kuti dhizaini yedhisheni iri pamberi pegadziriro – izvi zvakakosha zvikuru! —- – yakakosha!

Schematic dhizaini yapera. Tarisa zvinhu ndeizvi: gidhi remagetsi, grid repasi, nezvimwe.

2) Iyo dhizaini inoteerera kuisirwa pekuisa pamusoro pemidziyo (kunyanya plug-ins, nezvimwewo) uye kuiswa kwemidziyo (yakatwasanidzwa yakaiswa yakatwasuka kana yakatwasuka kuiswa), kuve nechokwadi chekugona uye kurerukirwa kwekuisirwa.

3) Isa chishandiso pane redunhu bhodhi ine chena dhizaini. Panguva ino, kana zvese izvi zvataurwa pamusoro zvapera, unogona kugadzira tafura yenetiwe (dhizaini-gt; CreateNetlist), wobva waendesa kunze kwetafura tafura (Dhizaini-> LoadNets) pane iyo PCB. Ndiri kuona chakazara chishandiso chemidziyo, ine inobhururuka waya yekukurumidza kubatana pakati pemapini, uyezve dhizaini dhizaini.

Kurongeka kwese kunoenderana nemisimboti inotevera:

Mune marongero pandinenge ndakarara pasi, unofanirwa kuona nzvimbo yekuisa mudziyo: kazhinji, zvigamba zvinofanirwa kuiswa kudivi rimwe chete, uye ma plug-ins anofanirwa kutsvaga zvakanangana.

1) Zvinoenderana nechikamu chinonzwisisika chemagetsi mashandiro, anowanzo kuve akapatsanurwa kuita: dunhu redhijitari dunhu (kupindirana, kupindirwa), nzvimbo yedunhu reanalogog (kutya kupindirwa), simba drive nzvimbo (yekupindirana sosi);

2) Maseketi ane basa rakafanana anofanirwa kuiswa padhuze sezvinobvira, uye zvinoriumba zvinofanirwa kugadziriswa kuve nechokwadi chekubatana kuri nyore; Panguva imwecheteyo, chinja chinongedzo chinenge chiri pakati pemabhuroko ebasa, kuitira kuti kubatana pakati pemabhuroko emabasa kuve kwakapfupika;

3) Kune akakwirira zvikamu, iyo yekumisikidza chinzvimbo uye yekumisikidza yakasimba inofanirwa kutariswa;Zvinhu zvekudziya zvinofanirwa kuiswa zvakaparadzana kubva kune tembiricha inonzwisisika zvinhu uye, kana zvichidikanwa, matanho ekupisa emagetsi anofanirwa kutariswa;

5) Iyo jenareta yewachi (semuenzaniso kristaro kana wachi) inofanirwa kunge iri padhuze nepadiki pane mudziyo uchishandisa wachi;

6) Marongero anodikanwa anofanirwa kuve akaenzana, mashoma uye akarongeka, kwete kumusoro-kurema kana kunyura.

4. Wiring

Wiring ndiyo inonyanya kukosha maitiro muPCB dhizaini. Izvi zvinokanganisa zvakananga mashandiro ePBB. Mukugadzirwa kwePCB, wiring kazhinji ine nhanho nhatu dzekupatsanura: yekutanga ndiko kubatana, uyezve izvo zvakanyanya kukosha zvePCB dhizaini. Kana pasina wiring yakaiswa uye iyo wiring iri kubhururuka, ipapo ichave iri yepasi-bhodhi bhodhi. Zvakachengeteka kutaura kuti haisati yatanga. Chechipiri kugutsikana kwemagetsi kuita. Ichi chiyero cheakadhindwa wedunhu bhodhi inoenderana index. Izvi zvakabatana mushure mekungwarira kuchinjika kweiyo wiring kuti uwane kugona kwakakwana kwemagetsi, uchiteverwa neaesthetics. Kana yako wiring yakabatana, saka hapana nzvimbo inokanganisa mashandiro emagetsi, asi mukutarisa kwakapfuura, kune akawanda akajeka, ane mavara, saka kunaka kwako kuita kwemagetsi, mumaziso evamwe kuchiri chidimbu chemarara . Izvi zvinounza kusagadzikana kukuru kuyedza uye kugadzirisa. Wiring inofanirwa kuve yakashambidzika uye yakafanana, isina mitemo nemirau. Izvi zvinofanirwa kuzadzikiswa uchisimbisa mashandiro emagetsi uye zvimwe zvinodiwa pamunhu.

Wiring inoitwa maererano nemitemo inotevera:

1) Mumamiriro ezvinhu akajairika, tambo yemagetsi uye waya yepasi inofanirwa kuve newaya kutanga kuverengera mashandiro emagetsi ebhodhi redunhu. Mukati meaya mamiriro, edza kuwedzera simba rekupa uye yepasi waya waya. Tambo dzepasi dziri nani kupfuura tambo dzemagetsi. Hukama hwavo ndewe: waya yepasi> Tambo yemagetsi & gt; Mitsara yechiratidzo. Kazhinji, iyo tambo yemutsara upamhi ndeye 0.2 ~ 0.3mm. Iyo yakatetepa yakafara inogona kusvika 0.05 ~ 0.07mm, uye tambo yemagetsi inowanzo kuve 1.2 ~ 2.5mm. Yedhijitari PCBS, yakafara ivhu waya inogona kushandiswa kugadzira zvishwe kune iyo grounding network (analog grounding haigone kushandiswa seizvi);

2) Kugadzirira-kugadzirisa kwepamusoro zvinodiwa (senge yakakwira frequency mutsara), yekuisa uye yekubuda micheto inofanirwa kudzivirira iri padyo yakafanana, kuitira kudzivirira kuratidzira kupindirwa. Kana zvichidikanwa, pamwe nekumisikidza, zvikamu zviviri zvepedyo zvewiring zvinofanirwa kunge zvakaringana kune mumwe nemumwe, zvakafanana kutarisana nekubatana kweparasiti;

3) Imba yeascillator yakavakirwa pasi, uye mutsetse wewachi unofanirwa kuve mupfupi sezvinobvira uye haugone kutaurwa chero kupi. Pazasi peiyo wachi oscillation wedunhu, yakakosha yepamhanyisa -mhedzisiro logic wedunhu chikamu chinofanira kuwedzera nzvimbo yevhu, haifanire kushandisa mimwe mitsara yemasaini, kuitira kuti denderedzwa remagetsi munda usvike zero;

4) Shandisa 45 ° polyline zvakanyanya sezvinobvira, usashandise 90 ° polyline kudzikisira mwaranzi yeakakwira frequency chiratidzo; (mutsetse wepamusoro unodikanwa kushandisa arc yakapetwa);

5) Usasunure pane chero mitsara yemasaini. Kana zvisingadzivisike, chiuno chinofanira kunge chiri chidiki sezvinobvira; Huwandu hwemakomba-emaburi etambo dzemasaini unofanirwa kuve mudiki sezvinobvira.

6) Iyo yakakosha tambo inofanirwa kuve ipfupi uye gobvu sezvinobvira, uye dziviriro inofanira kuwedzerwa pamativi ese maviri;

7) Kana uchipfuudza maseru anonzwika uye masaini emumunda nematare akapetana, anofanirwa kuburitswa kuburikidza ne “pasi chiratidzo – Ground waya”;

8) Masaini akakosha anofanirwa kuve akachengeterwa mapoinzi ebvunzo kuti agadzirise kukanganisa, kugadzirwa uye kuyedzwa kwekuchengetedza;

9) Mushure mekugadzirisa wiring kwapera, wiring inofanirwa kukwidziridzwa. Panguva imwecheteyo, mushure mekutanga kwetiweki cheki uye cheki yeDRC iri chokwadi, kuvakwa kwenzvimbo isina waya kunoitwa, uye hombe yemhangura inoshandiswa senzvimbo yepasi, uye bhodhi redunhu rakadhindwa rinoshandiswa. Nzvimbo dzisina kushandiswa dzakabatana nevhu sevhu. Kana kugadzira multi-layer board, magetsi, kumisikidza yega yega yakaverengerwa dura.

5. Wedzera misodzi

Musodzi ndiko kubatana kunodonhedza pakati pepadhi netambo kana pakati petambo negomba rekutungamira. Chinangwa cheye misodzi ndeyekudzivirira kusangana pakati petambo nepadhi kana pakati petambo negomba rekutungamira kana bhodhi raiswa pasi pesimba rakakura. Uye zvakare, yakatemwa, misodzi yemisodzi inogona kuita kuti bhodhi rePCB riwedzere kutsvinda.

Mune dhizaini dhizaini dhizaini, kuitira kuti iyo pad isimbise uye kudzivirira mechiniki ndiro, yekumisikidza pad uye yekunamatira waya pakati pekutsemuka, yekumisikidza pad uye waya inowanzo kumisikidzwa pakati pechinjiso tambo yemhangura firimu, chimiro senge misodzi, saka zviri Kazhinji inonzi misodzi.

6. Nekudaro, cheki yekutanga ndeyekutarisa maturakiti eGaroutout, yepamusoro dura, yepamusoro topoverlay uye yepasi kufukidza.

7. Yemagetsi kutonga cheki: kuburikidza neburi (0 kuburikidza mugomba – zvisingaite kwazvo; 0.8 muganho), kunyangwe paine yakaputsika gridhi, mashoma spacing (10mil), pfupi dunhu (paramende yega yega yakaongororwa imwe neimwe)

8. Tarisa tambo dzemagetsi netambo dzepasi – kupindira. (Sefa capacitance inofanirwa kuve padyo neiyo chip)

9. Mushure mekupedza iyo pcb, resa patsva mucherechedzo mucherechedzo kuti uone kana iyo netlist yashandurwa – inoshanda mushe.

10. Mushure mekupedzisa pcbb, tarisa dunhu rezvigadzirwa zvepakati kuti uone kunyatsoita.