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Release Time:2020-08-19 Edit the author:电子游xi厅下zai Reading:884
PCB板设计为zheng个工程xiang目的关键环节,在jinxing原理图设计,封装设计zhi后,高 效的,zheng确的PCB板设计时确保设计功能实现的重yao一步。那么ru何jinxinglayout设计呢?

首xian需yao准备原理图,原理图封装库schlib,元件库,PCB封装pcblib等。觴ing┰姆庾霸趜hi图ruan件中shi找不到的,所以jiu需yao自己qu建原理图封装,PCB封装,关键在yu器件的尺cunhePIN脚dui应。

第二,duiPCB板jinxing结构设计。主yaobao括布线qu域he螺si孔,装配孔等fei布线qu域的确定,确定layout的尺cun大小,为元器件,开关器件,jie插件等jinxing初步的layout。

第三,duiPCB板jinxing布ju设计。可以xian在原理图上生成网络表,然后导入网络表,导入PCB后可以看到飞线连jie的PCB板,再jinxinglayout设计。

第四,在布julayout完成zhi后jinxing走线设计。可以jinxing自动布线,一键布线等抄作,但shi往往自动布线都不shi很理想,不建议。一ban都shi自己手动布线。

第wu,布线yao从几个方面考lv。首xian,布线得不通,杜绝有飞线情况。再者需yaoman足电qi性能,达到预期的电qi特性。

第六,布线优化hesi印设计。jinxing布线优化后,jiu可以jinxing敷铜了。多层板还yaozhu意铺电源设计。

第qi,检cha网络heDRCgui则,PCB结构。出现rule violence说明网络,DRCgui则存在问题,需yao改zheng;出现warning,可以忽略,不guo能解决zui好解决。

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