6 Layer FR4 ENIG Impedance Control PCB
PCB Impedance Line Design
1.A cikin aiwatar da PCB LAYOUT, la'akari da ainihin yanayin da ake bukata don sarrafa impedance ne: layin nisa, layin nisa, tsayin layi, layin garkuwar shinge na shinge, bisa ga waɗannan buƙatun za a sanya su a cikin matsayi mai dacewa na layin impedance. .
2. Ƙaƙƙarfan tunani na garkuwa ya fi son zaɓi layin da ke kusa da Layer inda layin impedance yake.Matsayin da ya dace na layin impedance shine cikakken takardar tagulla, don tabbatar da cewa ana iya sarrafa karkatar da ƙimar impedance.A cikin samarwa na ainihi, bisa ga ƙirar LAYOUT, an zaɓi takardar jan karfe mafi kusa da layin impedance azaman Layer tunani.Idan babu takardar jan karfe a daidai matsayi, ba za a iya sarrafa impedance ba.Idan takardar tagulla ba za ta iya kare layin impedance gaba ɗaya ba, ba za a iya sarrafa shi ba.
3, Rarraba layin impedance kulawa na musamman: halayen halayen halayen layi ɗaya ne kawai, kawai buƙatar la'akari da fadin layin da tsawon layin.Bambance-bambancen impedances dole ne ya ƙunshi layi biyu na faɗin layi ɗaya gaba ɗaya daidai da juna.Coplanar impedance shine mu'amala tsakanin layi da tagulla na ƙasa, don haka faɗin layin yana buƙatar zama iri ɗaya, bangarorin biyu na layin suna kewaye da tagulla na ƙasa, kuma nisa daga layin zuwa ƙasa tagulla daidai yake daga. fara zuwa ƙarshe.
Menene Ikon Ƙarfafawa Akan PCB Akan Yi Amfani Da shi?
An fi son maƙarƙashiya mai sarrafawa lokacin da siginar dole ne ya sami takamammen abin ƙyama don yin aiki da kyau.A cikin aikace-aikacen mitoci masu yawa, dole ne a kiyaye matsawa akai-akai a ko'ina cikin jirgi don tabbatar da amincin bayanan da aka watsa da kuma tsabtar siginar.Tsawon hanya mai jagora ko mafi girman mita, ana buƙatar ƙarin daidaitawa.Rashin ƙarfi a wannan matakin na iya ƙara lokacin sauyawa na na'ura ko da'ira da kuma haifar da kurakurai da ba zato ba tsammani.
Ƙunƙarar da ba a sarrafa shi yana da wuyar tantancewa bayan an haɗa abubuwan da aka haɗa akan kewaye.Abubuwan da aka haɗa suna da jeri daban-daban na haƙuri dangane da kuri'a.Bugu da ƙari, halayensu na iya shafar canjin yanayin zafi, wanda zai haifar da rashin aiki.A wannan yanayin, maye gurbin bangaren yana da alama shine mafita, amma a gaskiya rashin isasshen na'urar wayar shine matsala.
Don haka, ƙirar PCB dole ne ta bincika impedance na madugu da juriyar sa a gaba don tabbatar da cewa ƙimar ɓangaren sun cika buƙatun.
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