"Connecting the analog world with the digital": Page 3 of 6

October 21, 2019 //By Christoph Hammerschmidt
"Connecting the analog world with the digital"
The real world is analog, but more and more information processing takes place in the digital sphere. This holds true in all areas of electronics application, and in particular in automotive electronics. Against this backdrop, it is obvious that the companies controlling the transition from one to the other sphere are of increasing importance. Analog Devices (ADI) is such a company. eeNews Europe spoke with Stefan Steyerl, Director Sales Mobility & Transportation for ADI EMEA.

eeNews Europe: Will the voltage in the traction batteries continue to increase? 800 volts is already a lot, but for higher engine power, thicker cables would be needed.

Steyerl: I don't think the development will lead to even higher engine power. Power is actually more than sufficient today. The bigger challenge lies in accelerating the charging of the battery systems on the one hand and reducing the costs for the battery systems on the other. In today's EVs, battery cost is a crucial factor. The aim is to reduce cost on the one hand and at the same time to increase range. These two developments go hand in hand, because the vehicle developer can install more battery cells - but then the costs continue to rise. In view of these conflicting requirements, we are considering what contribution we can make on the electronics side to measuring the cells. If I can measure more accurately, I can make better use of the remaining range. This will indirectly reduce battery costs. Another important aspect: If I measure cell voltages with greater accuracy during charging and discharging, I can also increase battery life - and this is an important factor in electromobility, especially in terms of costs.

eeNews Europe: Another product area where ADI is active, is the Automotive Audio Bus or A2B. What is the situation here - are there new customers, new applications?

Steyerl: A2B is an example of a technology that we have developed in close collaboration with car manufacturers. The problem was originally that there were multiple audio sources in the vehicle, for example several microphones. The manufacturers had to connect each one individually and wire it to the head unit. The result was star-shaped wiring that increased both weight and cost. And it led to the problem that there was not enough space at the head unit for the numerous connectors. Out of this problem we developed the A2B bus. With its daisy chaining, the A2B addresses precisely these issues, the cabling no longer is star-shaped but ring-shaped, and the head unit only needs one connector for multiple signal sources. This technology thus addresses the issues of costs, space and weight. A2B can be found today in production vehicles ...

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