Issue link: https://iconnect007.uberflip.com/i/969348
APRIL 2018 I DESIGN007 MAGAZINE 51 lems by doing power integrity analysis. We have a specialized technical department to do this, and we also help our customers to solve a lot of PI problems every year. We also provide power supply design specifications for design- ers' reference. For high-current power sup- plies, we perform a voltage drop and current simulation and look at the thermal conditions of the actual copper to avoid instability in the power supply. We provide design specifications in elec- tromagnetic compatibility to avoid EMC problems. We run EMI simulation aside from SI and PI simulation to eliminate EMI issues from a very early stage. Electromag- netic compatibility involves a wide range of factors, but it is mainly due to chips, PCBs, lines, power supply, ground, and shielding. It is a system- atic problem; every factor needs to be taken into con- sideration. In a PCB design, it is essential to consider the signal impedance, reflection, bounce, and crosstalk, which would cause EMI radiation if not done properly. Power noise is another source of EMI radiation, but it can be miti- gated by SI and PI optimization. Our technical knowledge on SI and PI has come a long way; we design and build a few test boards each year to ensure the accuracy of our simulation. We also cooperate with our customers to do tests and compare the test result to the simula- tion result to ensure the accuracy of our simu- lation. We believe that only accurate simula- tion can properly guide PCB design. Yu: What trends do you see in the market for collision avoidance systems, autonomous vehi- cles, and driverless vehicles? EDADOC: In recent years, autonomous vehicles have become a rather hot topic, and many big players have joined this arena, includ- ing Google. However, autonomous vehicle technology is still under development and testing, and not yet commercially available. Autonomous vehicles still have a long way to go. Many people confuse the advanced driver-assistance systems (ADAS) with arti- ficial intelligence/full self-driving. To be pre- cise, ADAS is not that; this is a very impor- tant technology path for accomplishing full self-driving. You could say that ADAS is the technology precondition of full self-driving. The vehicle collision avoidance system is a part of the advanced driver assistance system, which also includes FCWS, distance monitor- ing, reverse rear-view system (collision avoid- ance and parking assistance). Today, ADAS has a high market concen- tration, market penetration remains to be improved. However, as technology becomes more developed, cost decreases and consum- ers realize that safety is most important, we believe that advanced driver assistance sys- tems will grow for a long time. The market penetration will be much better by then. We can see this trend by our increasing demand for ADAS hardware development and manu- facturing from our customer. Yu: Thank you for your time. EDADOC: Thank you. DESIGN007