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How to break through the power bottleneck in PCB design
Over the past ten years, power has become a key design consideration and has brought some huge challenges to engineers designing and verifying systems. Physics no longer offers free rides.
Power is the rate at which energy is consumed, which was not a hot topic ten years ago, but today is an important design consideration. The energy consumption of the system will bring heat, drain the battery, increase the pressure on the power distribution network, and increase the cost. The development of mobile computing was the first to promote the desire to reduce energy consumption, but the effect of energy consumption is now far beyond this range and may bring some of the biggest structural changes in the industry. This is a key issue for server farms, cloud computing, automobiles, chips, and ubiquitous sensor networks that rely on energy acquisition.
The reason for the sudden change is that physics has brought the process technology to a scale below 90nm. However, as the junction size gets smaller and smaller, the voltage decreases, which causes a corresponding drop in power. Generally, even if developers add more features, the power budget will remain the same. At smaller scales, voltage scaling is more difficult and cannot be maintained. When the voltage is close to the threshold voltage, the switching time will increase. To compensate for this problem, designers will lower the threshold voltage, but doing so significantly increases the leakage current and switching current.
Every stage in the design flow has an impact on power consumption, from software architecture to device physics. Although each team can do partial power optimization work, no team can create a low-power design alone. Conversely, any team may destroy low-power efforts. This situation has created a new demand for collaborative and interdisciplinary tools. The power problem no longer stops at the chip. They cover all aspects of interconnection structure, circuit board and system design, power supply controller and so on. Current EDA tools are not built on power concepts, which means that designers need to adopt improved methods, rather than new methods from scratch.
The above is an introduction to how to break the power bottleneck in PCB design. Ipcb also provides PCB manufacturers and PCB manufacturing technology.
