PCB dhizaini yekugadzira inofanirwa kutevedzera zvinotevera misimboti:

a) Zvinonzwisisika kuronga nzvimbo yezvikamu uye kuwedzera kuwanda kwezvikamu zvakanyanya sezvinobvira kuitira kuderedza urefu hwetambo, kudzora crosstalk uye kuderedza ukuru hwebhodhi rakadhindwa;

b) Zvishandiso zvine musoro zvine zvikwangwani zvinopinda nekubuda mubhodhi rakadhindwa zvinofanirwa kuiswa padyo nekubatanidza sezvinobvira uye zvakarongwa muhurongwa hwehukama hwekubatanidza wedunhu zvakanyanya sezvinobvira;

c) Kurongeka kwenzvimbo. Zvinoenderana neiyo logic level, chiratidzo chekushandura nguva, kushivirira kweruzha uye logic yekubatanidza yezvikamu zvinoshandiswa, zviyero zvakaita seyehukama kana kupatsanurwa kwakasimba kwezvishwe zvinogamuchirwa kudzora ruzha rwecrosstalk yemagetsi, pasi uye chiratidzo;

d) Shandisa zvakaenzana. Kurongeka kwezvikamu pabhodhi rose repamusoro rinofanira kuva rakanaka uye rakarongeka. Kugoverwa kwezvikamu zvekupisa uye wiring density inofanira kunge yakafanana;

e) Sangana nezvinodiwa zvekupisa kupisa. Nokuda kwekutonhodza kwemhepo kana kuwedzera masingi ekupisa, mhepo yemhepo kana nzvimbo yakakwana yekupisa kupisa inofanira kuchengetwa; kune kutonhora kwemvura, zvinodiwa zvinoenderana zvinofanirwa kusangana;

f) Thermal components haifaniri kuiswa kumativi e-high-power components, uye chinhambwe chakakwana chinofanira kuchengetwa kubva kune zvimwe zvikamu;

g) Kana zvinhu zvinorema zvinoda kuiswa, zvinofanirwa kurongeka sepedyo nenzvimbo yekutsigira yebhodhi rakadhindwa sezvinobvira;

h) Inofanirwa kusangana nezvinodiwa zvekuisa chikamu, kugadzirisa uye kuyedzwa;

i) Zvakawanda zvinhu zvakaita sedhizaini nemitengo yekugadzira zvinofanirwa kutariswa zvizere.

PCB wiring mitemo

1. Wiring nzvimbo

Zvinhu zvinotevera zvinofanirwa kutariswa pakusarudza nzvimbo ye wiring:

a) Huwandu hwemhando dzezvikamu zvinofanirwa kuisirwa uye wiring nzira dzinodiwa kubatanidza izvi zvikamu;

b) Chinhambwe chiri pakati peiyo conductive pateni (kusanganisira dhizaini yemagetsi uye yepasi layer) yeakadhindwa conductor wiring nzvimbo isingabate yakadhindwa wiring nzvimbo panguva yekugadzira rondedzero haifanire kunge isingasviki 1.25mm kubva pabhodhi rakadhindwa furemu;

c) Chinhambwe chiri pakati peiyo conductive pateni yedenga repamusoro uye gwara regiyo haifanire kunge iri pasi pe2.54mm. Kana njanji yakashandiswa kugadzira pasi, waya yepasi ichashandiswa sefuremu.

2. Wiring mitemo

Iyo yakadhindwa bhodhi wiring inofanirwa kutevedzera inotevera mitemo:

a) Nhamba yeakadhindwa conductor wiring layers inotarwa zvinoenderana nezvinodiwa. Iyo wiring inogara chiteshi reshiyo inofanirwa kunge iri kupfuura 50%;

b) Zvinoenderana nemamiriro ekuita uye wiring density, zvine musoro sarudza hupamhi hwewaya uye waya spacing, uye edza kune yunifomu wiring mukati meiyo dhizaini, uye wiring density yechikamu chimwe nechimwe chakafanana, kana zvichidikanwa, anobatsira asiri-anoshanda ekubatanidza mapedhi kana waya dzakadhindwa dzinofanira. kuwedzerwa kushayikwa kwenzvimbo dze wiring;

c) Maviri ari padyo akaturikidzana ewaya anofanirwa kuiswa kunze perpendicular kune mumwe nemumwe uye diagonally kana kukotama kuderedza parasitic capacitance;

d) Wiring yemakondukita akadhindwa anofanirwa kunge ari mapfupi sezvinobvira, kunyanya kune ma-high-frequency masaini uye mitsara yechiratidzo inonzwisisika; kune mitsara yechiratidzo yakakosha sewachi, kunonoka wiring kunofanirwa kutariswa kana zvichidikanwa;

e) Kana akawanda masimba emagetsi (matanho) kana pasi (matanho) akarongwa pachikamu chimwe chete, kureba kwekuparadzanisa hakufanirwe kunge kuri pasi pe1mm;

f) Kune yakakura nzvimbo conductive mapatani akakura kupfuura 5 × 5mm2, mahwindo anofanira kuvhurwa zvishoma;

g) A thermal isolation design inofanira kuitwa pakati pemagirafu makuru-enzvimbo yemagetsi ekugadzirisa magetsi uye pasi pevhu uye mapedhi avo ekubatanidza, sezvinoratidzwa muMufananidzo 10, kuitira kuti irege kukanganisa kunaka kwewelding;

h) Izvo zvakakosha zvinodikanwa zvemamwe maseketi zvichaenderana nemirairo yakakodzera.

3. Wiring kutevedzana

Kuti uwane yakanakisa wiring yebhodhi rakadhindwa, kutevedzana kwewaya kunofanirwa kutariswa zvinoenderana nekunzwa kweakasiyana mitsara yemasaini kuyambuka uye zvinodiwa zvekunonoka kutapurirana waya. Mitsetse yechiratidzo chekutanga wiring inofanira kunge ipfupi sezvinobvira kuita kuti mitsetse yavo yekubatanidza ive pfupi sezvinobvira. Kazhinji, wiring inofanira kunge iri muhurongwa hunotevera:

a) Analogi diki chiratidzo mutsara;

b) Mitsetse yezviratidzo uye mitsetse midiki yemasaini inonyanya kunzwisiswa kune crosstalk;

c) Sistimu wachi chiratidzo mutsara;

d) Mitsetse yechiratidzo ine zvakakwirira zvinodiwa zvekunonoka kutapurirana waya;

e) General chiratidzo mutsetse;

f) Static inogona mutsara kana mamwe mitsara yekubatsira.