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华秋电路 > 技术中心 > PCB设计 > 如何解决多层PCB设计时的EMI问题

如何解决多层PCB设计时的EMI问题

2016年07月08日 16:02:47 来源:华秋电路 作者:Greta

  JIEJUEEMIWENTIDEBANFAHENDUO,XIANDAIDEEMIYIZHIFANGFABAOKUO:LIYONGEMIYIZHITUCENG、XUANYONGHESHIDEEMIYIZHILINGPEIJIANHEEMIFANGZHENSHEJIDENG。BENWENCONGZUIJIBENDEPCBBUBANCHUFA,TAOLUNPCBFENCENGDUIDIEZAIKONGZHIEMIFUSHEZHONGDEZUOYONGHESHEJIJIQIAO。


  电源汇流排


  ZAIICDEDIANYUANYINJIAOFUJINHELIDIANZHISHIDANGRONGLIANGDEDIANRONG,KESHIICSHUCHUDIANYADETIAOBIANLAIDEGENGKUAI。RANER,WENTIBINGFEIDAOCIWEIZHI。YOUYUDIANRONGCHENGYOUXIANPINLVXIANGYINGDETEXING,ZHEISHIDEDIANRONGWUFA ZAIQUANPINDAISHANGSHENGCHENGGANJINGDIQUDONGICSHUCHUSUOXUYAODEXIEBOGONGLV。CHUCIZHIWAI,DIANYUANHUILIUPAISHANGXINGCHENGDESHUNTAIDIANYAZAIQUOULUJINGDEDIANGANLIANGDUANHUIXINGCHENGDIANYAJIANG,ZHEIXIESHUNTAIDIANYAJIUSHIZHUYAODEGONG MOEMIGANRAOYUAN。WOMENYINGGAIZENMEJIEJUEZHEIXIEWENTI?


  JIUWOMENDIANLUBANSHANGDEICERYAN,ICZHOUWEIDEDIANYUANCENGKEYIKANCHENGSHIYOULIANGDEGAOPINDIANRONGQI,TAKEYISHOUJIWEIGANJINGSHUCHUTIGONGGAOPINNENGLIANGDEFENLIDIANRONGQISUOXIELOUDENEIBUFENNENGLIANG。CIWAI,YOULIANGDEDIANYUANCENGDEDIANGANYAOXIAO,CONGERDIANGANSUOHECHENGDESHUNTAIXINHAOYEXIAO,JINERJIANGDIGONGMOEMI。


  DANGRAN,DIANYUANCENGDAOICDIANYUANYINJIAODELIANXIANBIXUJINKENENGDUAN,YINWEISHUWEIXINHAODESHANGSHENGYANYUELAIYUEKUAI,ZUIHAOSHIZHIJIELIANDAOICDIANYUANYINJIAOSUOZAIDEHANPANSHANG,ZHEIYAOLINGWAITAOLUN。


金陵棋牌  WEILEKONGZHIGONGMOEMI,DIANYUANCENGYAOYOUZHUYUQUOUHEJUYOUZUGOUDIDEDIANGAN,ZHEIGEDIANYUANCENGBIXUSHIYIGESHEJIXIANGDANGHAODEDIANYUANCENGDEPEIDUI。YOURENKENENGHUIWEN,HAODAOSHENMECHENGDUCAISUANHAO?WENTIDEDA ANQUJUEYUDIANYUANDEFENCENG、CENGJIANDECAILIAOYIJIGONGZUOPINLV(JIICSHANGSHENGSHIJIANDEHANSHU)。TONGCHANG,DIANYUANFENCENGDEJIANJUSHI6mil,JIACENGSHIFR4CAILIAO,ZEMEIPINGFANGYINGCUNDIANYUANCENGDEDENGXIAODIAN RONGYUEWEI75pF。XIANRAN,CENGJIANJUYUEXIAODIANRONGYUEDA。


  SHANGSHENGSHIJIANWEI100DAO300psDEQIJIANBINGBUDUO,DANSHIANZHAOMUQIANICDEFAZHANSUDU,SHANGSHENG SHIJIANZAI100DAO300psFANWEIDEQIJIANJIANGZHANYOUHENGAODEBILI。DUIYU100DAO300psSHANGSHENGSHIJIANDEDIANLU,3milCENGJIANJUDUIDADUOSHUYINGYONGJIANGBUZAISHIYONG。NEISHI,YOUBIYAOCAIYONG CENGJIANJUXIAOYU1milDEFENCENGJISHU,BINGYONGJIEDIANCHANGSHUHENGAODECAILIAODAITIFR4JIEDIANCAILIAO。XIANZAI,TAOCIHEJIATAOSULIAOKEYIMANZU100DAO300psSHANGSHENGSHIJIANDIANLUDESHEJIYAOQIU。


  JINGUANWEILAIKENENGHUICAIYONGXINCAILIAOHEXINFANGFA,DANDUIYUJINTIANCHANGJIANDE1DAO3nsSHANGSHENGSHIJIANDIANLU、3DAO6milCENGJIANJUHEFR4JIEDIANCAILIAO,TONGCHANGZUGOUCHULIGAODUANXIEBOBINGSHISHUNTAIXINHAOZUGOUDI,JIUSHISHUO,GONGMOEMIKEYIJIANGDEHENDI。BENWENJICHUDEPCBFENCENGDUIDIESHEJISHILIJIANGJIADINGCENGJIANJUWEI3DAO6mil。


  电磁屏蔽


  CONGXINHAOZOUXIANLAIKAN,HAODEFENCENGCELVEYINGGAISHIBASUOYOUDEXINHAOZOUXIANFANGZAIYICENGHUORUOGANCENG,ZHEIXIECENGJINAIZHEDIANYUANCENGHUOJIEDICENG。DUIYUDIANYUAN,HAODEFENCENGCELVEYINGGAISHIDIANYUANCENGYUJIEDICENGXIANGLIN,QIEDIANYUANCENGYUJIEDICENGDEJULIJINKENENGXIAO,ZHEIJIUSHIWOMENSUOJIANGDE“FENCENG"CELVE。


  PCB堆叠


  SHENMEYANGDEDUIDIECELVEYOUZHUYUPINGBIHEYIZHIEMI?YIXIAFENCENGDUIDIEFANGANJIADINGDIANYUANDIANLIUZAIDANYICENGSHANGLIUDONG,DANDIANYAHUODUODIANYAFENBUZAITONGYICENGDEBUTONGBUFEN。DUODIANYUANCENGDEQINGXINGSHAOHOUTAOLUN。


  4层板


金陵棋牌  4CENGBANSHEJICUNZAIRUOGANQIANZAIWENTI。SHOUXIAN,CHUANTONGDEHOUDUWEI62milDESICENGBAN,JISHIXINHAOCENGZAIWAICENG,DIANYUANHEJIEDICENGZAINEICENG,DIANYUANCENGYUJIEDICENGDEJIANJURENGRANGUODA。


  RUGUOCHENGBENYAOQIUSHIDIYIWEIDE,KEYIKAOLVYIXIALIANGZHONGCHUANTONG4CENGBANDETIDAIFANGAN。ZHEILIANGGEFANGANDOUNENGGAISHANEMIYIZHIDEXINGNENG,DANZHISHIYONGYUBANSHANGYUANJIANMIDUZUGOUDIHEYUANJIANZHOUWEIYOUZUGOUMIANJI(FANGZHISUOYAOQIUDEDIANYUANFUTONGCENG)DECHANGHE。


金陵棋牌  DIYIZHONGWEISHOUXUANFANGAN,PCBDEWAICENGJUNWEIDICENG,ZHONGJIANLIANGCENGJUNWEIXINHAO/DIANYUANCENG。XINHAOCENGSHANGDEDIANYUANYONGKUANXIANZOUXIAN,ZHEIKESHIDIANYUANDIANLIUDELUJINGZUKANGDI,QIEXINHAOWEIDAILUJINGDEZUKANGYEDI。CONGEMIKONGZHIDEJIAODUKAN,ZHEISHIXIANYOUDEZUIJIA4CENGPCBJIEGOU。DIERZHONGFANGANDEWAICENGZOUDIANYUANHEDI,ZHONGJIANLIANGCENGZOUXINHAO。GAIFANGANXIANGDUICHUANTONG4CENGBANLAISHUO,GAIJINYAOXIAOYIXIE,CENGJIANZUKANGHECHUANTONGDE4CENGBANYIYANGQIANJIA。


  RUGUOYAOKONGZHIZOUXIANZUKANG,SHANGSHUDUIDIEFANGANDOUYAOFEICHANGXIAOXINDIJIANGZOUXIANBUZHIZAIDIANYUANHEJIEDIPUTONGDAODEXIABIAN。LINGWAI,DIANYUANHUODICENGSHANGDEPUTONGDAOZHIJIANYINGJINKENENGDIHULIANZAIYIQI,YIQUEBAODCHEDIPINDELIANJIEXING。


       6层板


金陵棋牌  RUGUO4CENGBANSHANGDEYUANJIANMIDUBIJIAODA,ZEZUIHAOCAIYONG6CENGBAN。DANSHI,6CENGBANSHEJIZHONGMOUXIEDIECENGFANGANDUIDIANCICHANGDEPINGBIZUOYONGBUGOUHAO,DUIDIANYUANHUILIUPAISHUNTAIXINHAODEJIANGDIZUOYONGSHENWEI。XIAMIANTAOLUNLIANGGESHILI。


  DIYILIJIANGDIANYUANHEDIFENBIEFANGZAIDI2HEDI5CENG,YOUYUDIANYUANFUTONGZUKANGGAO,DUIKONGZHIGONGMOEMIFUSHEFEICHANGBULI。BUGUO,CONGXINHAODEZUKANGKONGZHIGUANDIANLAIKAN,ZHEIYIFANGFAQUESHIFEICHANGZHENGQUEDE。


  DIERLIJIANGDIANYUANHEDIFENBIEFANGZAIDI3HEDI4CENG,ZHEIYISHEJIJIEJUELEDIANYUANFUTONGZUKANGWENTI,YOUYUDI1CENGHEDI6CENGDEDIANCIPINGBIXINGNENGCHA,CHAMOEMIZENGJIALE。RUGUOLIANGGEWAICENGSHANGDEXINHAOXIAN SHULIANGZUISHAO,ZOUXIANZHANGDUHENDUAN(DUANYUXINHAOZUIGAOXIEBOBOZHANGDE1/20),ZEZHEIZHONGSHEJIKEYIJIEJUECHAMOEMIWENTI。JIANGWAICENGSHANGDEWUYUANJIANHEWUZOUXIANQUYUPUTONGTIANCHONGBINGJIANGFUTONGQUJIEDI (MEI1/20BOZHANGWEIJIANGE),ZEDUICHAMOEMIDEYIZHITEBIEHAO。RUQIANSUOSHU,YAOJIANGPUTONGQUYUNEIBUJIEDICENGDUODIANXIANGLIAN。


金陵棋牌  TONGYONGGAOXINGNENG6CENGBANSHEJI YIBANJIANGDI1HEDI6CENGBUWEIDICENG,DI3HEDI4CENGZOUDIANYUANHEDI。YOUYUZAIDIANYUANCENGHEJIEDICENGZHIJIANSHILIANGCENGJUZHONGDESHUANGWEIDAIXINHAOXIANCENG,YINEREMIYIZHINENGLISHIYOUYIDE。GAISHEJIDEQUEDIAN ZAIYUZOUXIANCENGZHIYOULIANGCENG。QIANMIANJIESHAOGUO,RUGUOWAICENGZOUXIANDUANQIEZAIWUZOUXIANQUYUPUTONG,ZEYONGCHUANTONGDE6CENGBANYEKEYISHIXIANXIANGTONGDEDUIDIE。


  LINGYIZHONG6CENGBANBUJUWEIXINHAO、DI、XINHAO、DIANYUAN、DI、XINHAO,ZHEIKESHIXIANGAOJIXINHAOWANZHENGXINGSHEJISUOXUYAODEHUANJING。XINHAOCENGYUJIEDICENGXIANGLIN,DIANYUANCENGHEJIEDICENGPEIDUI。XIANRAN,BUZUZHICHUSHICENGDEDUIDIEBUPINGHENG。


金陵棋牌  ZHEITONGCHANGHUIJIJIAGONGZHIZAODAILAIMAFAN。JIEJUEWENTIDEBANFASHIJIANGDI3CENGSUOYOUDEKONGBAIQUYUTIANTONG,TIANTONGHOURUGUODI3CENGDEFUTONGMIDUJIEJINYUDIANYUANCENGHUOJIEDICENG,ZHEIKUAIBANKEYIBUYANGEDISUANZUOSHIJIE GOUPINGHENGDEDIANLUBAN。TIANTONGQUBIXUJIEDIANYUANHUOJIEDI。LIANJIEGUOKONGZHIJIANDEJULIRENGRANSHI1/20BOZHANG,BUJIANDECHUCHUDOUYAOLIANJIE,DANLIXIANGQINGKUANGXIAYINGGAILIANJIE。


  10层板


金陵棋牌  YOUYUDUOCENGBANZHIJIANDEJUEYUANGELICENGFEICHANGBO,SUOYI10HUO12CENGDEDIANLUBANCENGYUCENGZHIJIANDEZUKANGFEICHANGDI,ZHIYAOFENCENGHEDUIDIEBUCHUWENTI,WANQUANKEWANGDEDAOYOUYIDEXINHAOWANZHENGXING。YAOAN62milHOUDUJIAGONGZHIZAO12CENGBAN,KUNNANBIJIAODUO,NENGGOUJIAGONG12CENGBANDEZHIZAOSHANGYEBUDUO。


  YOUYUXINHAOCENGHEHUILUCENGZHIJIANZONGSHIGEYOUJUEYUANCENG,ZAI10CENGBANSHEJIZHONGFENPEIZHONGJIAN6CENGLAIZOUXINHAOXIANDEFANGANBINGFEIZUIJIA。LINGWAI,RANGXINHAOCENGYUHUILUCENGXIANGLINHENZHONGYAO,JIBANBUJUWEIXINHAO、DI、XINHAO、XINHAO、DIANYUAN、DI、XINHAO、XINHAO、DI、XINHAO。


金陵棋牌  ZHEIYISHEJIWEIXINHAODIANLIUJIQIHUILUDIANLIUTIGONGLELIANGHAODETONGLU。QIADANGDEBUXIANCELVESHI,DI1CENGYANXFANGXIANGZOUXIAN,DI3CENGYANYFANGXIANGZOUXIAN,DI4CENGYANXFANGXIANGZOUXIAN,YICILEITUI。ZHIGUANDIKANZOU XIAN,DI1CENG1HEDI3CENGSHIYIDUIFENCENGZUHE,DI4CENGHEDI7CENGSHIYIDUIFENCENGZUHE,DI8CENGHEDI10CENGSHIZUIHOUYIDUIFENCENGZUHE。DANGXUYAOGAIBIANZOUXIANFANGXIANGSHI,DI1CENGSHANGDEXINHAOXIANYINGJIE YOU”GUOKONG"DAODI3CENGYIHOUZAIGAIBIANFANGXIANG。SHIJISHANG,YEXUBINGBUZONGNENGZHEIYANGZUO,DANZUOWEISHEJIGAINIANHAISHIYAOJINLIANGZUNSHOU。


  TONGYANG,DANGXINHAODEZOUXIANFANGXIANGBIANHUASHI,YINGGAIJIEYOUGUOKONGCONGDI8CENGHEDI10CENGHUOCONGDI4CENGDAODI7CENG。ZHEIYANGBUXIANKEQUEBAOXINHAODEQIANXIANGTONGLUHEHUILUZHIJIANDEOUHEZUIJIN。LIRU,RUGUOXINHAOZAIDI1CENGSHANGZOUXIAN,HUILUZAIDI2CENGQIEZHIZAIDI2CENGSHANGZOUXIAN,NEIMEDI1CENGSHANGDEXINHAOJISHISHIJIEYOU“GUOKONG”ZHUANDAOLEDI3CENGSHANG,QIHUILURENGZAIDI2CENG,CONGERBAOCHIDIDIANGAN、DADIANRONGDETEXINGYIJILIANGHAODEDIANCIPINGBIXINGNENG。


  RUGUOSHIJIZOUXIANBUSHIZHEIYANG,ZENMEBAN?BIRUDI1CENGSHANGDEXINHAOXIANJINGYOUGUOKONGDAODI10CENG,ZHEISHIHUILUXINHAOZHIHAOCONGDI9CENGXUNZHAOJIEDIPINGMIAN,HUILUDIANLIUYAOZHAODAOZUIJINDEJIEDIGUOKONG(RUDIANZUHUODIANRONGDENGYUANJIANDEJIEDIYINJIAO)。RUGUOPENGQIAOFUJINCUNZAIZHEIYANGDEGUOKONG,ZEZHENDEZOUYUN。JIARUMEIYOUZHEIYANGJINDEGUOKONGKEYONG,DIANGANJIUHUIBIANDA,DIANRONGYAOJIANXIAO,EMIYIDINGHUIZENGJIA。


金陵棋牌  DANGXINHAOXIANBIXUJINGYOUGUOKONGLIKAIXIANZAIDEYIDUIBUXIANCENGDAOQITABUXIANCENGSHI,YINGJIUJINZAIGUOKONGPANGFANGZHIJIEDIGUOKONG,ZHEIYANGKEYISHIHUILUXINHAOSHUNLIFANHUIQIADANGDEJIEDICENG。DUIYUDI4CENGHEDI7CENGFENCENGZUHE,XINHAOHUILUJIANGCONGDIANYUANCENGHUOJIEDICENG(JIDI5CENGHUODI6CENG)FANHUI,YINWEIDIANYUANCENGHEJIEDICENGZHIJIANDEDIANRONGOUHELIANGHAO,XINHAORONGYICHUANSHU。


  多电源层的设计


金陵棋牌  RUGUOTONGYIDIANYAYUANDELIANGGEDIANYUANCENGXUYAOSHUCHUDADIANLIU,ZEDIANLUBANYINGBUCHENGLIANGZUDIANYUANCENGHEJIEDICENG。ZAIZHEIZHONGQINGKUANGXIA,MEIDUIDIANYUANCENGHEJIEDICENGZHIJIANDOUFANGZHILEJUEYUANCENG。ZHEIYANGJIUDEDAOWOMENQIWANG DEDENGFENDIANLIUDELIANGDUIZUKANGXIANGDENGDEDIANYUANHUILIUPAI。RUGUODIANYUANCENGDEDUIDIEZAOCHENGZUKANGBUXIANGDENG,ZEFENLIUJIUBUJUNYUN,SHUNTAIDIANYAJIANGDADEDUO,BINGQIEEMIHUIJIJUZENGJIA。


金陵棋牌  RUGUODIANLUBANSHANGCUNZAIDUOGESHUZHIBUTONGDEDIANYUANDIANYA,ZEXIANGYINGDIXUYAODUOGEDIANYUANCENG,YAOLAOJIWEIBUTONGDEDIANYUANCHUANGJIANGEZIPEIDUIDEDIANYUANCENGHEJIEDICENG。ZAISHANGSHULIANGZHONGQINGKUANGXIA,QUEDINGPEIDUIDIANYUANCENGHEJIEDICENGZAIDIANLUBANDEWEIZHISHI,QIEJIZHIZAOSHANGDUIPINGHENGJIEGOUDEYAOQIU。


  总结


  JIANYUDADUOSHUGONGCHENGSHISHEJIDEDIANLUBANSHIHOUDU62mil、BUDAIMANGKONGHUOMAIKONGDECHUANTONGYINZHIDIANLUBAN,BENWENGUANYUDIANLUBANFENCENGHEDUIDIEDETAOLUNDOUJUXIANYUCI。HOUDUCHABIETAIDADEDIANLUBAN,BENWENTUIJIANDEFENCENGFANGANKENENGBULIXIANG。CIWAI,DAIMANGKONGHUOMAIKONGDEDIANLUBANDEJIAGONGZHICHENGBUTONG,BENWENDEFENCENGFANGFAYEBUSHIYONG。


金陵棋牌  DIANLUBANSHEJIZHONGHOUDU、GUOKONGZHICHENGHEDIANLUBANDECENGSHUBUSHIJIEJUEWENTIDEGUANJIAN,YOULIANGDEFENCENGDUIDIESHIBAOZHENGDIANYUANHUILIUPAIDEPANGLUHEQUOU、SHIDIANYUANCENGHUOJIEDICENGSHANGDESHUNTAIDIANYAZUIXIAOBINGJIANGXINHAOHE DIANYUANDEDIANCICHANGPINGBIQILAIDEGUANJIAN。LIXIANGQINGKUANGXIA,XINHAOZOUXIANCENGYUQIHUILUJIEDICENGZHIJIANYINGGAIYOUYIGEJUEYUANGELICENG,PEIDUIDECENGJIANJU(HUOYIDUIYISHANG)YINGGAIYUEXIAOYUEHAO。GENJUZHEIXIEJIBENGAI NIANHEYUANZE,CAINENGSHEJICHUZONGNENGDADAOSHEJIYAOQIUDEDIANLUBAN。XIANZAI,ICDESHANGSHENGSHIJIANYIJINGHENDUANBINGJIANGGENGDUAN,BENWENTAOLUNDEJISHUDUIJIEJUEEMIPINGBIWENTISHIBIBUKESHAODE。


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