How to Reduce PCB Design Errors
PCB board design is a key and time-consuming task. Any problem that occurs requires engineers to inspect the entire design piece-by-piece on a network-by-network basis.
A typical PCB board design flow consists of the following steps: specifications--schematic-- schematic review-- schematic update-- layout-- layout review-- layout update-- Gerber.
The first three steps take the most amount of time because the schematic check is a manual process. Imagine a SoC board with 1000 or more wires. Inspect each connection manually is really a tedious task. In fact, checking each connection is almost impossible, thus several problems like wrong connections, floating nodes, etc. may occur on the final PCB board.
Schematic capture phase generally faces the following types of problems: misspell; signal short circuit problem; underline errors: such as APLLVDD and APLL_VDD; case problems: such as VDDE and vdde; etc.
To avoid these errors, there should be a way to check the entire schematic in seconds. This method can be achieved by using schematic simulation, while schematic simulation is rarely seen in the current board design flow. Through schematic simulation, the final output can be observed at the required node, so it can automatically check all connection problems. Schematic simulation not only saves PCB design time, but also improves board quality and increases the efficiency of the entire process.