Most of the electronics of today is designed around a PCB. These printed circuit boards are made from non-conducting material and have all components arranged in a way that ensures the best working of the device. It is interesting to note that the PCB designers need to consider several things when designing the board. These people are the blessing that we have today. These make everything much simpler and easily workable due to the compact nature of these components.
Design should be done after considering many things. First of all, we have to begin with the circuit design and this is fundamental to everything. The package, which suits the layout and components, is chosen and many designs fail at this spot because of the limitations that are placed on it. These packages are made to suit a variety of purposes. If one were to make it personally then the flexibility would be enormous.
The schematic is captured. This is done to various levels depending on the complexity of the package and the financial liquidity. After this, the footprints are drawn so that the components are not too crowded and the functionality is not affected due to a crowded stage.
Now the outlines for PCB and rules are marked out. Manual traces of the route are done after the components are placed. It is very possible to use an auto tracer also but the limitations are obvious. One ensures that all is as it should be and this is verified using the checker for design rule. Output Gerber files so that they could start manufacturing.
After the design is completed the checking starts. This takes into consideration the pad definition, placement and testing considerations, routing guidelines, marking priorities and fabrication. Only after the review is completed one will proceed with the actual fabrication.
In the pad definition one makes sure that the hole size is correct, solder masks are clear of any via and paste openings are enough. The thermal relief should be good and all blind and buried via are clearly defined. The spacing between the components is ensured by the placement criteria. All input outputting drivers are near to the edges. The bypass capacitors must be near the IC power Pins and there is all round clearance along the perimeter.
Guidelines for routing ensure that the names given in the routing to modifiers that have signal priorities. The planes ground where possible, trace, space rules are defined. One ensures that the shorting of power is not done and that there is sufficient width of trace for current. The trace width for the voltage regulator is in accordance with the output voltage that is predicted.
Testing considerations ensure logic pins do not have connection to the ground or the power. There is test pad on every net. Connectors are placed near device and unused points should have test points to help in debugging. There must be adequate space for easy movement of test equipment.
Once you have efficient PCB designers in your team, you become self sufficient and capable of meeting the demands in the industry. It is to ensure that the devices work efficiently that checks are done. When you have find that the design is good, everything works well.
Design should be done after considering many things. First of all, we have to begin with the circuit design and this is fundamental to everything. The package, which suits the layout and components, is chosen and many designs fail at this spot because of the limitations that are placed on it. These packages are made to suit a variety of purposes. If one were to make it personally then the flexibility would be enormous.
The schematic is captured. This is done to various levels depending on the complexity of the package and the financial liquidity. After this, the footprints are drawn so that the components are not too crowded and the functionality is not affected due to a crowded stage.
Now the outlines for PCB and rules are marked out. Manual traces of the route are done after the components are placed. It is very possible to use an auto tracer also but the limitations are obvious. One ensures that all is as it should be and this is verified using the checker for design rule. Output Gerber files so that they could start manufacturing.
After the design is completed the checking starts. This takes into consideration the pad definition, placement and testing considerations, routing guidelines, marking priorities and fabrication. Only after the review is completed one will proceed with the actual fabrication.
In the pad definition one makes sure that the hole size is correct, solder masks are clear of any via and paste openings are enough. The thermal relief should be good and all blind and buried via are clearly defined. The spacing between the components is ensured by the placement criteria. All input outputting drivers are near to the edges. The bypass capacitors must be near the IC power Pins and there is all round clearance along the perimeter.
Guidelines for routing ensure that the names given in the routing to modifiers that have signal priorities. The planes ground where possible, trace, space rules are defined. One ensures that the shorting of power is not done and that there is sufficient width of trace for current. The trace width for the voltage regulator is in accordance with the output voltage that is predicted.
Testing considerations ensure logic pins do not have connection to the ground or the power. There is test pad on every net. Connectors are placed near device and unused points should have test points to help in debugging. There must be adequate space for easy movement of test equipment.
Once you have efficient PCB designers in your team, you become self sufficient and capable of meeting the demands in the industry. It is to ensure that the devices work efficiently that checks are done. When you have find that the design is good, everything works well.
About the Author:
You can visit the website www.theallwingroup.com for more helpful information about Understanding The Methods That PCB Designers Adopt