Copper-coating, in which unused space on a PCB is used as a base level and then filled with solid copper, is called copper pouring.<\/p>\n
The significance of copper coating lies in reducing ground resistance, improving anti-interference ability, reduceing voltage drop, improving power efficiency, connecting to ground lines and reducing loop area.<\/p>\n
If there are many PCB places, such as SGND, AGND, GND, etc., how to cover copper?<\/p>\n
In my practice, according to the position of metal core <\/a>PCB<\/a> board, the main “ground” is used as the reference for independent copper coating, and the digital ground and analog ground are used for copper coating.<\/p>\n At the same time, before copper coating, first bold the corresponding power line: v5.0v, v3.6v, v3.3v (SD card power supply), etc.<\/p>\n In this way, multiple deformation structures of different shapes are formed.<\/p>\n Copper coating needs to deal with several issues:<\/p>\n 1. Different single point connections.<\/p>\n 2. For the copper coating near the crystal oscillator, the crystal oscillator in the circuit is a high-frequency emission source. The method is to apply copper around the crystal oscillator, and then ground the shell of the crystal oscillator separately.<\/p>\n 3. The island (dead zone) problem, if feel very big, then define a hole to add in the cost of not much.<\/p>\n In addition, a large area of copper cladding is good or grid copper cladding, not to generalize.<\/p>\n Why?<\/p>\n Large area of copper coating, if the wave soldering, the plate may be up, or even blistering.<\/p>\n From this point, the mesh heat dissipation is better.<\/p>\n Usually is the high frequency circuit to resist the interference request high multi-purpose grid, the low frequency circuit has the high current circuit and so on commonly complete copper coating.<\/p>\n You May Like:<\/p>\n 1 Layer Thermoelectric Copper base Board<\/a><\/p>\n 1 Layer Copper base Board<\/a><\/p>\n Copper Base (Metal core) Board<\/a><\/p>\n Media Contact<\/span>
Company Name:<\/strong> Huizhou Yongmingsheng Technology co., ltd. <\/a>
Contact Person:<\/strong> Joyce
Email:<\/strong> Send Email<\/a>
Phone:<\/strong> 0086-13902935069
Country:<\/strong> China
Website:<\/strong> https:\/\/www.ymspcb.com\/<\/a><\/p>\n