pcb廠家(jia)教(jiao)你(ni)，線路板的兼容設計(ji)怎么解決(jue)?

電(dian)(dian)(dian)(dian)磁兼容性是(shi)(shi)指電(dian)(dian)(dian)(dian)子(zi)(zi)(zi)設(she)備在各(ge)(ge)種(zhong)電(dian)(dian)(dian)(dian)磁環(huan)境中仍(reng)能夠(gou)(gou)協調、有效地進行工(gong)(gong)作的(de)能力。目的(de)是(shi)(shi)使電(dian)(dian)(dian)(dian)子(zi)(zi)(zi)設(she)備既能抑制各(ge)(ge)種(zhong)外來的(de)干(gan)擾(rao)，使電(dian)(dian)(dian)(dian)子(zi)(zi)(zi)設(she)備在特定(ding)的(de)電(dian)(dian)(dian)(dian)磁環(huan)境中能夠(gou)(gou)正常工(gong)(gong)作，同(tong)時又能減少電(dian)(dian)(dian)(dian)子(zi)(zi)(zi)設(she)備本身(shen)對其它電(dian)(dian)(dian)(dian)子(zi)(zi)(zi)設(she)備的(de)電(dian)(dian)(dian)(dian)磁干(gan)擾(rao)。

1、選擇(ze)合(he)理的(de)(de)(de)導線(xian)寬度(du)由于瞬(shun)變電流在PCB電路板印制(zhi)線(xian)條上所產生(sheng)的(de)(de)(de)沖擊干擾主要是由印制(zhi)導線(xian)的(de)(de)(de)電感成分造成的(de)(de)(de)，因(yin)此應盡量(liang)減小(xiao)印制(zhi)導線(xian)的(de)(de)(de)電感量(liang)。

2、采(cai)用(yong)(yong)正確的(de)布(bu)(bu)線(xian)策略采(cai)用(yong)(yong)平等(deng)走線(xian)可以(yi)減少導線(xian)電(dian)感(gan)，但導線(xian)之間(jian)的(de)互(hu)感(gan)和分布(bu)(bu)電(dian)容(rong)增加(jia)，如果(guo)布(bu)(bu)局允許，***采(cai)用(yong)(yong)井字形網(wang)狀布(bu)(bu)線(xian)結構(gou)，具體做法是印(yin)制(zhi)板的(de)一面(mian)(mian)橫向布(bu)(bu)線(xian)，另(ling)一面(mian)(mian)縱向布(bu)(bu)線(xian)，然后在交叉孔處用(yong)(yong)金屬化孔相連。

3、為(wei)了(le)抑(yi)制(zhi)(zhi)PCB電(dian)路板導線(xian)(xian)之(zhi)間(jian)(jian)的(de)(de)串擾(rao)，在(zai)設計布線(xian)(xian)時應(ying)盡量避免長(chang)距離的(de)(de)平等走線(xian)(xian)，盡可(ke)能(neng)拉開線(xian)(xian)與(yu)線(xian)(xian)之(zhi)間(jian)(jian)的(de)(de)距離，信號線(xian)(xian)與(yu)地(di)線(xian)(xian)及電(dian)源線(xian)(xian)盡可(ke)能(neng)不交叉。在(zai)一些對干(gan)擾(rao)十分敏(min)感的(de)(de)信號線(xian)(xian)之(zhi)間(jian)(jian)設置一根接地(di)的(de)(de)印制(zhi)(zhi)線(xian)(xian)，可(ke)以(yi)有效地(di)抑(yi)制(zhi)(zhi)串擾(rao)。