金陵棋牌

华秋电路 > 技术中心 > PCB设计 > PCB布局时如何摆放及安装去耦电容

PCB布局时如何摆放及安装去耦电容

2016年07月08日 15:22:46 来源:华秋电路 作者:Greta

  尖峰电流的形成:


  SHUZIDIANLUSHUCHUGAODIANPINGSHICONGDIANYUANLACHUDEDIANLIUIohHEDIDIANPINGSHUCHUSHIGUANRUDEDIANLIUIolDEDAXIAOYIBANSHIBUTONGDE,JI:Iol>Ioh。YIXIATUDETTLYUFEIMENWEILISHUOMINGJIANFENGDIANLIUDEXINGCHENG:


  SHUCHUDIANYARUYOUTU(a)SUOSHI,LILUNSHANGDIANYUANDIANLIUDEBOXINGRUYOUTU(b),ERSHIJIDEDIANYUANDIANLIUBAOXIANRUYOUTU(c)。YOUTU(c)KEYIKANCHUZAISHUCHUYOUDIDIANPINGZHUANHUANDAOGAODIANPINGSHIDIANYUANDIANLIUYOUYIGEDUANZANERFUDUHENDADEJIANFENG。JIANFENGDIANYUANDIANLIUDEBOXINGSUISUOYONGQIJIANDELEIXINGHESHUCHUDUANSUOJIEDEDIANRONGFUZAIERYI。


  产生尖峰电流的主要原因是:


金陵棋牌  SHUCHUJIDET3、T4GUANDUANSHEJINEITONGSHIDAOTONG。ZAIYUFEIMENYOUSHUCHUDIDIANPINGZHUANXIANGGAODIANPINGDEGUOCHENGZHONG,SHURUDIANYADEFUTIAOBIANZAIT2HET3DEJIJIHUILUNEICHANSHENGHENDADEFANXIANGQUDONGDIANLIU,YOUYUT3DEBAOHESHENDUSHEJIDEBIT2DA,FANXIANGQUDONGDIANLIUJIANGSHIT2SHOUXIANTUOLIBAOHEERJIEZHI。T2JIEZHIHOU,QIJIDIANJIDIANWEISHANGSHENG,SHIT4DAOTONG。KESHICISHIT3HAIWEITUOLIBAOHE,YINCIZAIJIDUANDESHEJINEIT3HET4JIANGTONGSHIDAOTONG,CONGERCHANSHENGHENDADEic4,SHIDIANYUANDIANLIUXINGCHENGJIANFENGDIANLIU。TUZHONGDER4ZHENGSHIWEILEXIANZHICIJIANFENGDIANLIUERSHEJI。

金陵棋牌  DIGONGHAOXINGTTLMENDIANLUZHONGDER4JIAODA,YINCIQIJIANFENGDIANLIUJIAOXIAO。DANGSHURUDIANYAYOUDIDIANPINGBIANWEIGAODIANPINGSHI,YUFEIMENSHUCHUDIANPINGYOUGAOBIANDI,ZHEISHIT3、T4YEKENENGTONGSHIDAOTONG。DANDANGT3KAISHIJINRUDAOTONGSHI,T4CHUYUFANGDAZHUANGTAI,LIANGGUANDEJI-SHEJIANDIANYAJIAODA,GUSUOCHANSHENGDEJIANFENGDIANLIUJIAOXIAO,DUIDIANYUANDIANLIUCHANSHENGDEYINGXIANGXIANGDUIJIAOXIAO。

金陵棋牌  CHANSHENGJIANFENGDIANLIUDELINGYIGEYUANYINSHIFUZAIDIANRONGDEYINGXIANG。YUFEIMENSHUCHUDUANSHIJISHANGCUNZAIFUZAIDIANRONGCL,DANGMENDESHUCHUYOUDIZHUANHUANDAOGAOSHI,DIANYUANDIANYAYOUT4DUIDIANRONGCLCHONGDIAN,YINCIXINGCHENGJIANFENGDIANLIU。

金陵棋牌  DANGYUFEIMENDESHUCHUYOUGAODIANPINGZHUANHUANDAODIDIANPINGSHI,DIANRONGCLTONGGUOT3FANGDIAN。CISHIFANGDIANDIANLIUBUTONGGUODIANYUAN,GUCLDEFANGDIANDIANLIUDUIDIANYUANDIANLIUWUYINGXIANG。


  尖峰电流的抑制方法:


  1、ZAIDIANLUBANBUXIANSHANGCAIQUCUOSHI,SHIXINHAOXIANDEZASANDIANRONGJIANGDAOZUIXIAO;

  2、 LINGYIZHONGFANGFASHISHEFAJIANGDIGONGDIANDIANYUANDENEIZU,SHIJIANFENGDIANLIUBUZHIYUYINQIGUODADEDIANYUANDIANYABODONG;

  3、 TONGCHANGDEZUOFASHISHIYONGQUOUDIANRONGLAILVBO,YIBANSHIZAIDIANLUBANDEDIANYUANRUKOUCHUFANG

  YIGE1uF~10uFDEQUOUDIANRONG,LVCHUDIPINZAOSHENG;ZAIDIANLUBANNEIDEMEIYIGEYOUYUANQIJIANDEDIANYUANHEDIZHIJIANFANGZHIYIGE0.01uF~0.1uFDEQUOUDIANRONG(GAOPINLVBODIANRONG),YONGYULVCHUGAOPINZAOSHENG。LVBODEMUDESHIYAOLVCHUDIEJIAZAIDIANYUANSHANGDEJIAOLIUGANRAO,DANBINGBUSHISHIYONGDEDIANRONGRONGLIANGYUEDAYUEHAO,YINWEISHIJIDEDIANRONGBINGBUSHILIXIANGDIANRONG,BUJUBEILIXIANGDIANRONGDESUOYOUTEXING。

金陵棋牌  QUOUDIANRONGDEXUANQUKEANC=1/FJISUAN,QIZHONGFWEIDIANLUPINLV,JI10MHzQU0.1uF,100MHzQU0.01uF。YIBANQU0.1~0.01uFJUNKE。

金陵棋牌  FANGZHIZAIYOUYUANQIJIANBANGDEGAOPINLVBODIANRONGDEZUOYONGYOULIANGGE,QIYISHILVCHUYANDIANYUANCHUANDAOGUOLAIDEGAOPINGANRAO,QIERSHIJISHIBUCHONGQIJIANGAOSUGONGZUOSHISUOXUDEJIANFENGDIANLIU。SUOYIDIANRONGDEFANGZHIWEIZHISHIXUYAOKAOLVDE。

  SHIJIDEDIANRONGYOUYUCUNZAIJISHENGCANSHU,KEDENGXIAOWEICHUANLIANZAIDIANRONGSHANGDEDIANZUHEDIANGAN,JIANGQICHENGWEIDENGXIAOCHUANLIANDIANZU(ESR)HEDENGXIAOCHUANLIANDIANGAN(ESL)。ZHEIYANG,SHIJIDEDIANRONGJIUSHIYIGECHUANLIANXIEZHENDIANLU,QIXIEZHENPINLVWEI:

  

        PCB布局时如何摆放及安装去耦电容


  SHIJIDEDIANRONGZAIDIYUFrDEPINLVCHENGXIANRONGXING,ERZAIGAOYUFrDEPINLVSHANGZECHENGXIANGANXING,SUOYIDIANRONGGENGXIANGSHIYIGEDAIZULVBOQI。

  10uFDEDIANJIEDIANRONGYOUYUQIESLJIAODA,FrXIAOYU1MHz,DUIYU50HzZHEIYANGDEDIPINZAOSHENGYOUJIAOHAODELVBOXIAOGUO,DUISHANGBAIZHAODEGAOPINKAIGUANZAOSHENGZEMEIYOUSHENMEZUOYONG。

金陵棋牌  DIANRONGDEESRHEESLSHIYOUDIANRONGDEJIEGOUHESUOYONGDEJIEZHIJUEDINGDE,ERBUSHIDIANRONGLIANG。TONGGUOSHIYONGGENGDARONGLIANGDEDIANRONGBINGBUNENGTIGAOYIZHIGAOPINGANRAODENENGLI,TONGLEIXINGDEDIANRONG,ZAIDIYUFrDEPINLVXIA,DARONGLIANGDEBIXIAORONGLIANGDEZUKANGXIAO,DANRUGUOPINLVGAOYUFr,ESLJUEDINGLELIANGZHEDEZUKANGBUHUIYOUSHENMEQUBIE。

金陵棋牌  DIANLUBANSHANGSHIYONGGUODUODEDARONGLIANGDIANRONGDUIYULVCHUGAOPINGANRAOBINGMEIYOUSHENMEBANGZHU,TEBIESHISHIYONGGAOPINKAIGUANDIANYUANGONGDIANSHI。LINGYIGEWENTISHI,DARONGLIANGDIANRONGGUODUO,ZENGJIALESHANGDIANJIRECHABADIANLUBANSHIDUIDIANYUANDECHONGJI,RONGYIYINQIRUDIANYUANDIANYAXIADIE、DIANLUBANJIECHAJIANDAHUO、DIANLUBANNEIDIANYASHANGSHENGMANDENGWENTI。


        PCB布局时去耦电容摆放


  DUIYUDIANRONGDEANZHUANG,SHOUXIANYAOTIDAODEJIUSHIANZHUANGJULI。RONGZHIZUIXIAODEDIANRONG,YOUZUIGAODEXIEZHENPINLV,QUOUBANJINGZUIXIAO,YINCIFANGZAIZUIKAOJINXINPIANDEWEIZHI。RONGZHISHAODAXIEDEKEYIJULISHAOYUAN,ZUIWAICENGFANGZHIRONGZHIZUIDADE。DANSHI,SUOYOUDUIGAIXINPIANQUOUDEDIANRONGDOUJINLIANGKAOJINXINPIAN。

  XIAMIANJIUSHIYIGEBAIFANGWEIZHIDELIZI。BENLIZHONGDEDIANRONGDENGJIDAZHIZUNXUN10BEIDENGJIGUANXI。



        PCB布局时如何摆放及安装去耦电容


金陵棋牌  HAIYOUYIDIANYAOZHUYI,ZAIFANGZHISHI,ZUIHAOJUNYUNFENBUZAIXINPIANDESIZHOU,DUIMEIYIGERONGZHIDENGJIDOUYAOZHEIYANG。TONGCHANGXINPIANZAISHEJIDESHIHOUJIUKAOLVDAOLEDIANYUANHEDIYINJIAODEPAILIEWEIZHI,YIBANDOUSHIJUNYUNFENBUZAIXINPIANDESIGEBIANSHANGDE。YINCI,DIANYARAODONGZAIXINPIANDESIZHOUDOUCUNZAI,QUOUYEBIXUDUIZHENGGEXINPIANSUOZAIQUYUJUNYUNQUOU。RUGUOBASHANGTUZHONGDE680pFDIANRONGDOUFANGZAIXINPIANDESHANGBU,YOUYUCUNZAIQUOUBANJINGWENTI,NEIMEJIUBUNENGDUIXINPIANXIABUDEDIANYARAODONGHENHAODEQUOU。


  电容的安装


  ZAIANZHUANGDIANRONGSHI,YAOCONGHANPANLACHUYIXIAODUANYINCHUXIAN,RANHOUTONGGUOGUOKONGHEDIANYUANPINGMIANLIANJIE,JIEDIDUANYESHITONGYANG。ZHEIYANGLIUJINGDIANRONGDEDIANLIUHUILUWEI:DIANYUANPINGMIAN-》GUOKONG-》YINCHUXIAN-》HANPAN-》DIANRONG-》HANPAN-》YINCHUXIAN-》GUOKONG-》DIPINGMIAN,XIATUZHIGUANDEXIANSHILEDIANLIUDEHUILIULUJING。



  PCB布局时如何摆放及安装去耦电容


金陵棋牌  DIYIZHONGFANGFACONGHANPANYINCHUHENZHANGDEYINCHUXIANRANHOULIANJIEGUOKONG,ZHEIHUIYINRUHENDADEJISHENGDIANGAN,YIDINGYAOBIMIANZHEIYANGZUO,ZHEISHIZUIZAOGAODEANZHUANGFANGSHI。

  DIERZHONGFANGFAZAIHANPANDELIANGGEDUANDIANJINLINHANPANDAKONG,BIDIYIZHONGFANGFALUMIANJIXIAODEDUO,JISHENGDIANGANYEJIAOXIAO,KEYIJIESHOU。

金陵棋牌  DISANZHONGZAIHANPANCEMIANDAKONG,JINYIBUJIANXIAOLEHUILUMIANJI,JISHENGDIANGANBIDIERZHONGGENGXIAO,SHIBIJIAOHAODEFANGFA。

  DISIZHONGZAIHANPANLIANGCEDOUDAKONG,HEDISANZHONGFANGFAXIANGBI,XIANGDANGYUDIANRONGMEIYIDUANDOUSHITONGGUOGUOKONGDEBINGLIANJIERUDIANYUANPINGMIANHEDIPINGMIAN,BIDISANZHONGJISHENGDIANGANGENGXIAO,ZHIYAOKONGJIANYUNXU,JINLIANGYONGZHEIZHONGFANGFA。

  ZUIHOUYIZHONGFANGFAZAIHANPANSHANGZHIJIEDAKONG,JISHENGDIANGANZUIXIAO,DANSHIHANJIESHIKENENGHUICHUXIANWENTI,SHIFOUSHIYONGYAOKANJIAGONGNENGLIHEFANGSHI。

  TUIJIANSHIYONGDISANZHONGHEDISIZHONGFANGFA。


金陵棋牌  XUYAOQIANGDIAOYIDIAN:YOUXIEGONGCHENGSHIWEILEJIESHENGKONGJIAN,YOUSHIRANGDUOGEDIANRONGSHIYONGGONGGONGGUOKONG,RENHEQINGKUANGXIADOUBUYAOZHEIYANGZUO。ZUIHAOXIANGBANFAYOUHUADIANRONGZUHEDESHEJI,JIANSHAODIANRONGSHULIANG。

  YOUYUYINZHIXIANYUEKUAN,DIANGANYUEXIAO,CONGHANPANDAOGUOKONGDEYINCHUXIANJINLIANGJIAKUAN,RUGUOKENENG,JINLIANGHEHANPANKUANDUXIANGTONG。ZHEIYANGJISHISHI0402FENGZHUANGDEDIANRONG,NIYEKEYISHIYONG20milKUANDEYINCHUXIAN。YINCHUXIANHEGUOKONGANZHUANGRUTU4SUOSHI,ZHUYITUZHONGDEGEZHONGCHICUN。



SAOMIAOERWEIMAZIXUNKEFU

华秋电路电话客服

客服(深圳)

0755-23986801

0755-23986802

0755-23986803

0755-23986804

客服(九江)

0792-8983001

0792-8983002

0792-8983003

0792-8983004

服务投诉

0755-83863759

GONGZUOSHIJIAN:

9:00-20:00 (周一至周六)