1. Kuumbwa kwemaslots panguva yePCB dhizaini maitiro anosanganisira:
Slotting inokonzerwa nekuparadzaniswa kwemasimba kana pasi ndege; kana paine akawanda akasiyana magetsi ekushandisa kana zvikonzero paPCB, kazhinji hazvigoneke kugovera ndege yakakwana kune yega yega magetsi network uye pasi network. Nzira yakajairika ndeyeKuita kana kuita kupatsanura simba kana kupatsanura pasi pandege dzakawanda. Slots inoumbwa pakati pezvikamu zvakasiyana pane imwe ndege.
Iyo kuburikidza nemakomba yakanyanya kukora kuti iite mitsetse (kuburikidza nemakomba anosanganisira mapedhi uye vias); kana maburi achipfuura nepasi pevhu kana dura remagetsi pasina kubatanidza magetsi kwavari, imwe nzvimbo inoda kusiiwa yakatenderedza nemaburi ekuzviparadzanisa nemagetsi; asi kana maburi kana maburi anyanya kuswedera pedyo, mhete ye spacer inopindirana, mitsetse inogadzira.
2. Mhedzisiro yekutsvedza paEMC kuita kwePCB vhezheni
Grooving ichave neimwe mhedzisiro pane EMC kuita kwePCB board. Izvi zvinogona kuva zvakaipa kana zvakanaka. Kutanga tinoda kunzwisisa kugoverwa kwepamusoro-soro kwepamusoro-speed zviratidzo uye zviratidzo zvishoma. Pakumhanya kwakaderera, ikozvino inoyerera ichifamba munzira yekushomeka kwakaderera. Mufananidzo uri pasi apa unoratidza kuti kana yakaderera-speed ikozvino inoyerera kubva kuA kusvika kuB, chiratidzo chayo chekudzoka chinodzoka kubva pasi pasi kusvika kune chitubu. Panguva ino, kugoverwa kwepamusoro ikozvino kwakakura.
Pakumhanya kwakanyanya, mhedzisiro ye inductance panzira yekudzoka chiratidzo ichapfuura mhedzisiro yekupikisa. High-speed kudzoka masaini anoyerera munzira yeyakaderera impedance. Panguva ino, kugoverwa kwepamusoro ikozvino kwakatetepa, uye chiratidzo chekudzoka chakanyanyisa pasi pemutsara wechiratidzo mune bundle.
Kana paine maseketi asingaenderane paPCB, "kuparadzaniswa kwepasi" kunodiwa, ndiko kuti, ndege dzepasi dzinoiswa zvakasiyana maererano nemagetsi akasiyana emagetsi, madhijitari uye analogi zviratidzo, kukurumidza-kumhanya uye kuderera-kumhanya masaini, uye yakakwirira-ikozvino. uye zviratidzo zvakaderera-zvino. Kubva pakugoverwa kweyepamusoro-yekumhanya chiratidzo uye yakaderera-yekumhanyisa chiratidzo chekudzoka kwakapihwa pamusoro, zvinogona kunzwisiswa zviri nyore kuti yakaparadzana pasi inogona kudzivirira superposition yezviratidzo zvekudzoka kubva kumasekete asingaenderane uye kudzivirira yakajairika yepasi mutsara impedance coupling.
Asi zvisinei nemasaini ekumhanya-mhanya kana masaini-anomhanya-pasi, kana mitsetse yechiratidzo ichiyambuka nhandare yemagetsi kana ndege yepasi, matambudziko mazhinji akakomba achaitika, anosanganisira:
Kuwedzera iyo yazvino loop nzvimbo kunowedzera loop inductance, ichiita yakabuda waveform nyore kuita oscillate;
Kune mitsara yekumhanya-yepamusoro-yekumhanya inoda kuomesera impedance control uye inofambiswa zvinoenderana neiyo stripline modhi, iyo stripline modhi ichaparadzwa nekuda kwekutsemuka kweyepamusoro ndege kana ndege yepasi kana ndege dzepamusoro nedzepasi, zvichikonzera kusaenderera mberi uye kukanganisa kwakakomba. chiratidzo chekuvimbika. matambudziko epabonde;
Inowedzera kubuda kwemwaranzi munzvimbo uye inotarirwa nekukanganiswa kubva muchadenga magineti minda;
Iyo yakakwira-frequency voltage inodonha pane loop inductance inoumba yakajairwa-modhi radiation sosi, uye yakajairika-modhi radiation inogadzirwa kuburikidza netambo dzekunze;
Wedzera mukana weiyo yakakwira-frequency chiratidzo crosstalk nemamwe maseketi pabhodhi.
Kana paine maseketi asingaenderane paPCB, "kuparadzaniswa kwepasi" kunodiwa, ndiko kuti, ndege dzepasi dzinoiswa zvakasiyana maererano nemagetsi akasiyana emagetsi, madhijitari uye analogi zviratidzo, kukurumidza-kumhanya uye kuderera-kumhanya masaini, uye yakakwirira-ikozvino. uye zviratidzo zvakaderera-zvino. Kubva pakugoverwa kweyepamusoro-yekumhanya chiratidzo uye yakaderera-yekumhanyisa chiratidzo chekudzoka kwakapihwa pamusoro, zvinogona kunzwisiswa zviri nyore kuti yakaparadzana pasi inogona kudzivirira superposition yezviratidzo zvekudzoka kubva kumasekete asingaenderane uye kudzivirira yakajairika yepasi mutsara impedance coupling.
Asi zvisinei nemasaini ekumhanya-mhanya kana masaini-anomhanya-pasi, kana mitsetse yechiratidzo ichiyambuka nhandare yemagetsi kana ndege yepasi, matambudziko mazhinji akakomba achaitika, anosanganisira:
Kuwedzera iyo yazvino loop nzvimbo kunowedzera loop inductance, ichiita yakabuda waveform nyore kuita oscillate;
Kune mitsara yekumhanya-yepamusoro-yekumhanya inoda kuomesera impedance control uye inofambiswa zvinoenderana neiyo stripline modhi, iyo stripline modhi ichaparadzwa nekuda kwekutsemuka kweyepamusoro ndege kana ndege yepasi kana ndege dzepamusoro nedzepasi, zvichikonzera kusaenderera mberi uye kukanganisa kwakakomba. chiratidzo chekuvimbika. matambudziko epabonde;
Inowedzera kubuda kwemwaranzi munzvimbo uye inotarirwa nekukanganiswa kubva muchadenga magineti minda;
Iyo yakakwira-frequency voltage inodonha pane loop inductance inoumba yakajairwa-modhi radiation sosi, uye yakajairika-modhi radiation inogadzirwa kuburikidza netambo dzekunze;
Wedzera mukana weiyo yakakwira-frequency chiratidzo crosstalk nemamwe maseketi pabhodhi
3. PCB magadzirirwo nzira kuti slotting
Kugadziriswa kwegrooves kunofanirwa kutevedzera zvinotevera misimboti:
Kune mitsetse inomhanya-mhanya yechiratidzo inoda kudzorwa kwakasimba kwe impedance, mitsetse yavo inorambidzwa zvachose kuyambuka mitsetse yakakamurwa kudzivirira kukonzeresa kusaenderera mberi uye kukonzera matambudziko akakomba echiratidzo;
Kana paine matunhu asingaenderani paPCB, kupatsanurwa kwepasi kunofanirwa kuitwa, asi kuparadzaniswa kwepasi hakufanire kukonzera mitsetse yechiratidzo chepamusoro-soro kuti iyambuke wiring yakakamurwa, uye edza kusakonzeresa mitsetse yechiratidzo yakaderera kuti iyambuke wiring yakakamurwa;
Kana kutenderera nepakati kusingadzivisike, bhiriji rinofanira kuitwa;
Iyo yekubatanidza (yekunze) haifanirwe kuiswa pachitsiko chepasi. Kana paine mutsauko wakakura unokwanisa pakati pepoinzi A nepoinzi B papasi pasi muchimiro, yakajairika mode radiation inogona kugadzirwa kuburikidza netambo yekunze;
Paunenge uchigadzira maPCB e-high-density connectors, kunze kwekunge pane zvakakosha zvinodiwa, iwe unofanirwa kuve nechokwadi chekuti pasi network inotenderedza pini yega yega. Iwe unogona zvakare kuronga pasi network zvakaenzana paunenge uchironga mapini kuti uve nechokwadi chekuenderera kwendege yepasi uye kudzivirira Kugadzirwa kwe slotting.