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PCB设计整体思维如何形成?

* 激流快艇 : * 激流快艇 : admin * 激流快艇时间 : 2019-08-21 * 浏览 :

PCB设计对于电源电路设计来说至关重要,也是新手必要攻下的技术之一,小编在本文中就将分享关于PCB设计中的一些精髓看点。

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PCBJIEGOUSHEJI


ZHEIYIBUGENJUYIJINGQUEDINGDEDIANLUBANCHICUNHEGEXIANGJIXIEDINGWEI,ZAIPCB SHEJIHUANJINGXIAHUIZHIPCBBANMIAN,BINGANDINGWEIYAOQIUFANGZHISUOXUDEJIECHAJIAN、ANJIAN/KAIGUAN、LUOSIKONG、ZHUANGPEIKONGDENGDENG。BINGCHONGFENKAOLVHEQUEDINGBUXIANQUYUHEFEIBUXIANQUYU(RULUOSIKONGZHOUWEIDUODAFANWEISHUYUFEIBUXIANQUYU)。


PCBBUJU


①ANDIANQIXINGNENGHELIFENQU,YIBANFENWEI:SHUZIDIANLUQU(JIPAGANRAO、YOUCHANSHENGGANRAO)、MONIDIANLUQU(PAGANRAO)、GONGLVQUDONGQU(GANRAOYUAN);


②WANCHENGTONGYIGONGNENGDEDIANLU,YINGJINLIANGKAOJINFANGZHI,BINGDIAOZHENGGEYUANQIJIANYIBAOZHENGLIANXIANZUIWEIJIANJIE;TONGSHI,DIAOZHENGGEGONGNENGKUAIJIANDEXIANGDUIWEIZHISHIGONGNENGKUAIJIANDELIANXIANZUIJIANJIE;


③ DUIYUZHILIANGDADEYUANQIJIANYINGKAOLVANZHUANGWEIZHIHEANZHUANGQIANGDU;FAREYUANJIANYINGYUWENDUMINGANYUANJIANFENKAIFANGZHI,BIYAOSHIHAIYINGKAOLVREDUILIUCUOSHI;


④I/OQUDONGQIJIANJINLIANGKAOJINYINSHUABANDEBIAN、KAOJINYINCHUJIECHAJIAN;


⑤SHIZHONGCHANSHENGQI(RU:JINGZHENHUOZHONGZHEN)YAOJINLIANGKAOJINYONGDAOGAISHIZHONGDEQIJIAN;


⑥ZAIMEIGEJICHENGDIANLUDEDIANYUANSHURUJIAOHEDIZHIJIAN,XUJIAYIGEQUOUDIANRONG(YIBANCAIYONGGAOPINXINGNENGHAODEDUSHIDIANRONG);DIANLUBANKONGJIANJIAOMISHI,YEKEZAIJIGEJICHENGDIANLUZHOUWEIJIAYIGETANDIANRONG;


⑦JIDIANQIXIANQUANCHUYAOJIAFANGDIANERJIGUAN(1N4148JIKE);


⑧BUJUYAOQIUYAOJUNHENG,SHUMIYOUXU,BUNENGTOUZHONGJIAOQINGHUOYITOUCHEN。


XUYAOTEBIEZHUYI,ZAIFANGZHIYUANQIJIANSHI,YIDINGYAOKAOLVYUANQIJIANDESHIJICHICUNDAXIAO(SUOZHANMIANJIHEGAODU)、YUANQIJIANZHIJIANDEXIANGDUIWEIZHI,YIBAOZHENGDIANLUBANDEDIANQIXINGNENGHESHENGCHANANZHUANGDEKEXINGXINGHEBIAN LIXINGTONGSHI,YINGGAIZAIBAOZHENGSHANGMIANYUANZENENGGOUTIXIANDEQIANTIXIA,SHIDANGXIUGAIQIJIANDEBAIFANG,SHIZHIZHENGQIMEIGUAN,RUTONGYANGDEQIJIANYAOBAIFANGZHENGQI、FANGXIANGYIZHI,BUNENGBAIDE“CUOLUOYOUZHI” 。


ZHEIGEBUZHOUGUANXIDAOBANZIZHENGTIXINGXIANGHEXIAYIBUBUXIANDENANYICHENGDU,SUOYIYIDIANYAOHUADALIQIQUKAOLV。BUJUSHI,DUIBUTAIKENDINGDEDIFANGKEYIXIANZUOCHUBUBUXIAN,CHONGFENKAOLV。


BUXIANSHIZHENGGEPCBSHEJIZHONGZUIZHONGYAODEGONGXU。ZHEIJIANGZHIJIEYINGXIANGZHEPCBBAN DEXINGNENGHAOHUAI。ZAIPCBDESHEJIGUOCHENGZHONG,BUXIANYIBANYOUZHEIMESANZHONGJINGJIEDEHUAFEN:SHOUXIANSHIBUTONG,ZHEISHIPCBSHEJISHIDEZUIJIBENDEYAOQIU。RUGUOXIANLUDOUMEIBUTONG,GAODEDAOCHUSHIFEIXIAN,NEIJIANGSHIYIKUAIBUHEGEDEBANZI,KEYISHUOHAIMEIRUMEN。


QICISHIDIANQIXINGNENGDEMANZU。ZHEISHIHENGLIANGYIKUAIYINSHUADIANLUBANSHIFOUHEGEDEBIAOZHUN。ZHEISHIZAIBUTONGZHIHOU,RENZHENDIAOZHENGBUXIAN,SHIQINENGDADAOZUIJIADE DIANQIXINGNENG。


JIEZHESHIMEIGUAN。JIARUNIDEBUXIANBUTONGLE,YEMEIYOUSHENMEYINGXIANGDIANQIXINGNENGDEDIFANG,DANSHIYIYANKANGUOQUZALUANWUZHANGDE,JIASHANGWUCAIBINFEN、HUAHUALVLVDE,NEIJIUSUANNIDEDIANQIXINGNENGZENMEHAO,ZAIBIERENYANLIHAISHILAJIYIKUAI。ZHEIYANGJICESHIHEWEIXIUDAILAIJIDADEBUBIAN。BUXIANYAOZHENGQIHUAYI,BUNENGZONGHENGJIAOCUOHAOWUZHANGFA。ZHEIXIEDOUYAOZAIBAOZHENGDIANQIXINGNENGHEMANZUQITAGEBIEYAOQIUDEQINGKUANGXIASHIXIAN,FOUZEJIUSHISHEBENZHUMOLE。


BUXIANSHIZHUYAOANYIXIAYUANZEJINXING:


①YIBANQINGKUANGXIA,SHOUXIANYINGDUIDIANYUANXIANHEDIXIANJINXINGBUXIAN,YIBAOZHENGDIANLUBANDEDIAN QIXINGNENG。ZAITIAOJIANYUNXUDEFANWEINEI,JINLIANGJIAKUANDIANYUAN、DIXIANKUANDU,ZUIHAOSHIDIXIANBIDIANYUANXIANKUAN,TAMENDEGUANXISHI:DIXIAN>DIANYUANXIAN>XINHAOXIAN,TONGCHANGXINHAOXIANKUAN WEI:0.2~0.3mm,ZUIXIKUANDUKEDA0.05~0.07mm,DIANYUANXIANYIBANWEI1.2~2.5mm。DUISHUZIDIANLUDE PCBKEYONGKUANDEDIDAOXIANZUCHENGYIGEHUILU, JIGOUCHENGYIGEDIWANGLAISHIYONG(MONIDIANLUDEDIZEBUNENGZHEIYANGSHIYONG)


②PCBBUXIANGONGYIYAOQIU:


YIBANQINGKUANGXIA,XINHAOXIANKUANWEI0.3mm(12mil),DIANYUANXIANKUANWEI0.77mm(30mil)HUO1.27mm(50mil);XIANYUXIANZHIJIANHEXIANYUHANPANZHIJIANDEJULIDAYUDENGYU0.33mm(13mil),SHIJIYINGYONGZHONG,TIAOJIANYUNXUSHIYINGKAOLVJIADAJULI;


BUXIANMIDUJIAOGAOSHI,KEKAOLV(DANBUJIANYI)CAIYONGICJIAOJIANZOULIANGGENXIAN,XIANDEKUANDUWEI0.254mm(10mil),XIANJIANJUBUXIAOYU0.254mm(10mil)。TESHUQINGKUANGXIA,DANGQIJIANGUANJIAOJIAOMI,KUANDUJIAOZHAISHI,KEANSHIDANGJIANXIAOXIANKUANHEXIANJIANJU。


HAN PAN(PAD)YUGUODUKONG(VIA)DEJIBENYAOQIUSHI:PANDEZHIJINGBIKONGDEZHIJINGYAODAYU0.6mm;LIRU,TONGYONGCHAJIAOSHIDIANZU、DIANRONGHEJICHENGDIANLUDENG,CAIYONGPAN/KONGCHICUN 1.6mm/0.8mm(63mil/32mil),CHAZUO、CHAZHENHEERJIGUAN1N4007DENG,CAIYONG1.8mm/1.0mm(71mil/39mil)。SHIJIYING YONGZHONG,YINGGENJUSHIJIYUANJIANDECHICUNLAIDING,YOUTIAOJIANSHI,KESHIDANGJIADAHANPANCHICUN;PCBBANSHANGSHEJIDEYUANJIANANZHUANGKONGJINGYINGBIYUANJIANGUANJIAODESHIJICHICUNDA0.2~0.4mmZUOYOU。


③GUOKONG(VIA):YIBANWEI1.27mm/0.7mm(50mil/28mil);DANGBUXIANMIDUJIAOGAOSHI,GUOKONGCHICUNKESHIDANGJIANXIAO,DANBUYIGUOXIAO,KEKAOLVCAIYONG1.0mm/0.6mm(40mil/24mil)。


④HANPAN、XIAN、GUOKONGDEJIANJUYAOQIU


PAD and VIA :≥ 0.3mm(12mil)


PAD and PAD :≥ 0.3mm(12mil)


PAD and TRACK :≥ 0.3mm(12mil)


TRACK and TRACK :≥ 0.3mm(12mil)


MIDUJIAOGAOSHI:


PAD and VIA :≥ 0.254mm(10mil)


PAD and PAD :≥ 0.254mm(10mil)


PAD and TRACK :≥ 0.254mm(10mil)


TRACK and TRACK :≥ 0.254mm(10mil)


BUXIANYOUHUAHESIYIN


“MEIYOUZUIHAODE,ZHIYOUGENGHAODE”!BUGUANZENMEWAKONGXINSIDEQUSHEJI,DENGHUAWANZHIHOU,ZAIQUKANYIKAN,HAISHIHUIJUEDEHENDUODIFANGKEYIXIUGAIDE。YIBANSHEJIDEJINGYANSHI:YOUHUABUXIANDESHIJIANSHICHUCIBUXIANDESHIJIANDELIANGBEI。


GANJUEMEISHENMEDIFANGXUYAOXIUGAIZHIHOU,JIUKEYIPUTONGLE(Place->polygon Plane)。PUTONGYIBANPUDIXIAN(ZHUYIMONIDIHESHUZIDIDEFENLI),DUOCENGBANSHIHAIKENENGXUYAOPUDIANYUAN。SHIDUIYUSIYIN,YAOZHUYIBUNENGBEIQIJIANDANGZHUHUOBEIGUOKONGHEHANPANQUDIAO。TONGSHI,SHEJISHIZHENGSHIYUANJIANMIAN,DICENGDEZIYINGZUOJINGXIANGCHULI,YIMIANHUNXIAOCENGMIAN。


WANGLUOHEDRCJIANCHAHEJIEGOUJIANCHA


SHOUXIAN,ZAIQUEDINGDIANLUYUANLITUSHEJIWUWUDEQIANTIXIA,JIANGSUOSHENGCHENGDEPCBWANG LUOWENJIANYUYUANLITUWANGLUOWENJIANJINXINGWULILIANJIEGUANXIDEWANGLUOJIANCHA(NETCHECK),BINGGENJUSHUCHUWENJIANJIEGUOJISHIDUISHEJIJINXINGXIUZHENG,YIBAOZHENGBUXIANLIANJIEGUANXIDEZHENGQUEXING;WANGLUOJIANCHA ZHENGQUETONGGUOHOU,DUIPCBSHEJIJINXINGDRCJIANCHA,BINGGENJUSHUCHUWENJIANJIEGUOJISHIDUISHEJIJINXINGXIUZHENG,YIBAOZHENGPCBBUXIANDEDIANQIXINGNENG。ZUIHOUXUJINYIBUDUIPCBDEJIXIEANZHUANGJIEGOUJINXING JIANCHAHEQUEREN。


ZHIBAN


①ZAICIZHIQIAN,ZUIHAOHAIYAOYOUYIGESHENHEDEGUOCHENG。


PCBSHEJISHIYIGEKAOXINSIDEGONGZUO,SHEIDEXINSIMI,JINGYANGAO,SHEJICHULAIDEBANZIJIUHAO。SUOYISHEJISHIYAOJIQIXIXIN,CHONGFENKAOLVGEFANGMIANDEYINSHU(BIRUSHUOBIANYUWEIXIUHEJIANCHAZHEIYIXIANGHENDUORENJIUBUQUKAOLV),JINGYIQIUJING,JIUYIDINGNENGSHEJICHUYIGEHAOBANZI。

② YUXIANDUIYAOQIUBIJIAOYANGEDEXIAN(RUGAOPINXIAN)JINXINGBUXIAN,SHURUDUANYUSHUCHUDUANDEBIANXIANYINGBIMIANXIANGLINPINGXING,YIMIANCHANSHENGFANSHEGANRAO。BIYAOSHIYINGJIADIXIANGELI,LIANGXIANGLINCENGDEBUXIANYAOHUXIANGCHUIZHI,PINGXINGRONGYICHANSHENGJISHENGOUHE。


③ZHENDANGQIWAIQIAOJIEDI,SHIZHONGXIANYAOJINLIANGDUAN,QIEBUNENGYINDEDAOCHUDOUSHI。SHIZHONGZHENDANGDIANLUXIAMIAN、TESHUGAOSULUOJIDIANLUBUFENYAOJIADADIDEMIANJI,ERBUYINGGAIZOUQITAXINHAOXIAN,YISHIZHOUWEIDIANCHANGQUJINYULING;


④JINKENENGCAIYONG45°DEZHEXIANBUXIAN,BUKESHIYONG90°ZHEXIAN,YIJIANXIAOGAOPINXINHAODEFUSHE;(YAOQIUGAODEXIANHAIYAOYONGSHUANGHUXIAN);


⑤RENHEXINHAOXIANDOUBUYAOXINGCHENGHUANLU,RUBUKEBIMIAN,HUANLUYINGJINLIANGXIAO;XINHAOXIANDEGUOKONGYAOJINLIANGSHAO;


⑥GUANJIANDEXIANJINLIANGDUANERCU,BINGZAILIANGBIANJIASHANGBAOHUDI;


⑦TONGGUOBIANPINGDIANLANCHUANSONGMINGANXINHAOHEZAOSHENGCHANGDAIXINHAOSHI,YAOYONG“DIXIAN-XINHAO-DIXIAN”DEFANGSHIYINCHU;


⑧GUANJIANXINHAOYINGYULIUCESHIDIAN,YIFANGBIANSHENGCHANHEWEIXIUJIANCEYONG;


⑨YUANLITUBUXIANWANCHENGHOU,YINGDUIBUXIANJINXINGYOUHUA;TONGSHI,JINGCHUBUWANGLUOJIANCHAHEDRCJIANCHAWUWUHOU,DUIWEIBUXIANQUYUJINXINGDIXIANTIANCHONG,YONGDAMIANJITONGCENGZUODIXIANYONG,ZAIYINZHIBANSHANGBAMEIBEIYONGSHANGDEDIFANGDOUYUDIXIANGLIANJIEZUOWEIDIXIANYONG。HUOSHIZUOCHENGDUOCENGBAN,DIANYUAN、DIXIANGEZHANYONGYICENG。


PCBDESHEJI、BUJU、ZOUXIANFENXI、YOUHUAZHEIXIEBUZHOU,DOUSHIYAOJINGGUOZHANGQIDEJINGYANJILEICAINENGZUODAOYIGESHEJIDEDAJUGUAN。NEIMEWOMENRUHENENGXINGCHENGYIGEPCBSHEJIDEZHENGTISIWEINI?


1、WUSHUADIANJIQUDONGQIPCBSHEJI,CONGKANGGANRAOBUJUDAOXIAOXINGHUASHEJISILUZAIDAOWUSHUADIANJIPCBZOUXIANSILU。


2、GEZHONGSHIZHANKAIFAJINGYANDAINISHENRULEJIEWUSHUADIANJIQUDONGQIPCBSHEJI,TIGAODUIWUSHUADIANJIPCBHUIZHIDEGUIZEDERENSHI。


3、PCBSHEJIDEZHENGTISIWEI,HUIZHIPCBXUYAOFENWEIJIGEBUZHOU,DIANLUFANGANFENXI,XUANXINGFENXI,BUJUFENXI,PCBZOUXIANFENXI,ZONGHEFENXIDEZHENGTISIWEI。


SHENZHENSHICHENGCHIDIANLUKEJIYOUXIANJILIUKUAITINGPCBSHEJIZHONGXINZHILIYUZUOZHONGGUOZUIQIANGDADEQUANWEIGAOSUPCBSHEJIFUWUSHANG,ZHUANYECONGSHIGEZHONGGAOMI/GAOPINPCBSHEJI、GAOSUBEIBANSHEJI、ZHUJIBANHESHOUJIBANSHEJI、MANGMAIKONGPCBSHEJIYIJIGEZHONGGAOSUCHAFENXINHAODIANLUBANSHEJI,ZHANGQIXIANGGUANGDAKEHUTIGONGPCB LAYOUT、SIFANGZHENFENXI、DIANYUANWANZHENGXINGFANGZHENFENXI、CHANPIN/DANBANEMCSHEJIDENGJISHUFUWUYUJIEJUEFANGAN,TONGSHIXIEZHULENGPIANMENYUANQIJIANDECAIGOU,JIANRONGGONGNENGQIJIANDETIHUAN、SHEJIXINHAOYUAN、CESHIJIADENG。