### [四层板评审](https://www.zxzic.com/forum/6187.html)

**Published:** 2026-08-27T09:56:04

**Author:** 智行者IC社区

**Excerpt:** 输出通流，输入孔位置，地过孔分散，反馈线没连输出侧铺铜孔上焊盘，孔不齐防护器件靠近连接器隔离间距差分不耦合区域…

输出通流，输入孔位置，地过孔分散，反馈线没连

![](https://cdn.zxzic.com/public/uploads/gallery/original/2026/08/27/202608271787824813_processed.webp)

输出侧铺铜

![](https://cdn.zxzic.com/public/uploads/gallery/original/2026/08/27/202608271787824820_processed.webp)

孔上焊盘，孔不齐

![](https://cdn.zxzic.com/public/uploads/gallery/original/2026/08/27/202608271787824835_processed.webp)

防护器件靠近连接器

![](https://cdn.zxzic.com/public/uploads/gallery/original/2026/08/27/202608271787824850_processed.webp)

隔离间距

![](https://cdn.zxzic.com/public/uploads/gallery/original/2026/08/27/202608271787824868_processed.webp)

差分不耦合区域较长，等长绕的不对，重绕

![](https://cdn.zxzic.com/public/uploads/gallery/original/2026/08/27/202608271787824874_processed.webp)

粗线

![](https://cdn.zxzic.com/public/uploads/gallery/original/2026/08/27/202608271787824892_processed.webp)

调整铺铜

![](https://cdn.zxzic.com/public/uploads/gallery/original/2026/08/27/202608271787824901_processed.webp)

这里铜皮可以铺上

![](https://cdn.zxzic.com/public/uploads/gallery/original/2026/08/27/202608271787824910_processed.webp)

这里焊盘之间不要打孔走线

![](https://cdn.zxzic.com/public/uploads/gallery/original/2026/08/27/202608271787824933_processed.webp)

电源粗线，输出引脚铺铜

![](https://cdn.zxzic.com/public/uploads/gallery/original/2026/08/27/202608271787824946_processed.webp)

这两个是滤波电容，走粗线

![](https://cdn.zxzic.com/public/uploads/gallery/original/2026/08/27/202608271787824956_processed.webp)

对称

![](https://cdn.zxzic.com/public/uploads/gallery/original/2026/08/27/202608271787824964_processed.webp)

过孔数量差异较大

![](https://cdn.zxzic.com/public/uploads/gallery/original/2026/08/27/202608271787824982_processed.webp)

转一下

![](https://cdn.zxzic.com/public/uploads/gallery/original/2026/08/27/202608271787824998_processed.webp)

模块内部飞线未处理完毕

![](https://cdn.zxzic.com/public/uploads/gallery/original/2026/08/27/202608271787825007_processed.webp)

散热焊盘

![](https://cdn.zxzic.com/public/uploads/gallery/original/2026/08/27/202608271787825022_processed.webp)

![](https://cdn.zxzic.com/public/uploads/gallery/original/2026/08/27/202608271787825036_processed.webp)

差分间距不对

![](https://cdn.zxzic.com/public/uploads/gallery/original/2026/08/27/202608271787825051_processed.webp)

回流孔

![](https://cdn.zxzic.com/public/uploads/gallery/original/2026/08/27/202608271787825065_processed.webp)

模块内部飞线处理

![](https://cdn.zxzic.com/public/uploads/gallery/original/2026/08/27/202608271787825127_processed.webp)

鼓包有点大，改成小鼓包，往不等长处移

![](https://cdn.zxzic.com/public/uploads/gallery/original/2026/08/27/202608271787825135_processed.webp)



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