If you happen to be just starting with a new design, you may end up leaving some PCB design guidelines to be just an afterthought as you would be spending the majority of your time on the component selections and circuit design. However, it is important to know that failing to provide enough time and just focusing your attention on one thing could lead to a design that interprets poorly from its digital domain to the physical reality. This can be very bothersome for the manufacturer to make.
Below are some important guidelines you need to know to come with a design that is functional, manufacturable, and reliable.
Fine Tune the Component Placement
The component placement stage of the PCB layout process is both a science and an art that needs strategic considerations regarding the major real estate that is available on your board. While such process could be very challenging, how you will replace your electric components would identify how easy the board will be manufactured and how it will meet the original requirements for the design.
The guideline that you need to remember is that when you are utilizing mixed-technology components, the manufacturer may need an extra procedure to assemble the board, which would mean additional cost. So, you need to be prepared for this.
Keep Things Separate
Current spikes and large voltage in power circuits can all interfere with the current control circuits and low voltage. In order to lessen this, some guidelines need to be followed.
Separation. The control ground and power ground need to be covered separately for every power supply stage.
Placement. If you placed the ground plane in the mid layer, make sure that there is a small impedance path so you can reduce the risk of power circuit interference and this will help keep the control signals.
In order to lessen capacitive coupling because of the location of a large ground plane, as well as the lines that are routed overhead and below it, you need to have your analog ground crossed by analog lines only.
Combat Heating Issues
Have you experienced that your circuit performance has degraded? Or your board got damaged because of heat issues? The problem bothers many designers when heat dissipation is not considered. This issue should be identified and solves as this can affect the entire process and design.
These are just a few guidelines that needs to be followed in your PCB design in order to make sure that you get one that is reliable, manufacturable, and of course functional. Doing so will also eliminate problems along the process and will ensure that you will be getting your desired results. With this, you will be avoiding unnecessary expenses, thus you get to protect your money and as well.