Technology review
How advances in automotive systems are changing passive components requirements
sensing and, eventually, LIDAR to provide another view of the driving environment with which to correlate other inputs.
Again, each of these devices needs onboard passives to condition the sensor for best operation, as well as to stabilise the power supply and ensure the sensor’s data is transmitted successfully to whichever centralised system will interpret its signals and act upon them. Analysts
ResearchandMarkets.com forecast that the global market for ADAS and autonomous driving related components will grow at a robust 22.31% a year, each year from 2018 to 2028.
'Efforts to improve driving safety are boosting demand for a wide variety of sensors for use in safety-related applications such as braking systems, adaptive cruise control, blind-spot detection, lane-departure warning and even driver alertness.'
Infotainment systems are also demanding more passives. What used to be a car dashboard has evolved into a powerful combined information and entertainment centre whose facilities are expected to match, or at least not lag too far behind, the leading edge of consumer smartphone and tablet design. Car buyers expect sophisticated navigation systems, extensive vehicle monitoring, onboard multimedia playback as well as personal device integration (Android Auto and Apple CarPlay), and increasingly, connectivity both for passenger internet access and vehicle services such as the OnStar safety and security system. Analysts Data Intelligence suggest that the global market for automotive infotainment systems will grow in value from $1.45bn in 2018 to $4.2bn in 2022, creating further demand for passives.
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The increasing complexity of infotainment systems is matched, if not outstripped, by the growing complexity of behind-the-scenes systems such as Engine Controller Units (ECUs), body controllers and the myriad subsystems that handle everything from keyless entry to vehicle security. Together they form a complex distributed network of sensing, computing and control that has to be tied together by sophisticated bus structures, over which signals are sent and received by transceivers. Analysts Global Market Insights reckon that global shipments of automotive transceivers will rise to 7 billion units a year by 2024. Many of these transceivers will be used to enable increasingly sophisticated control of Internal Combustion Engine (ICE) powertrains, to achieve better emissions control and greater economy.
The transition to hybrid and eventually fully electronic powertrains will also increase demand for passive components. Hybrid vehicles need sophisticated ECUs to manage the transition between electric and ICE driving, as well as regenerative-braking and battery-charging strategies. Fully electric vehicles exchange the complexity of managing a hybrid powertrain for the challenge of trying to ensure predictable range, fast charging and good performance from still- evolving battery technology. All this demands rich sensing, robust communications, and extensive use of power-electronics devices, and their supporting circuitry, to manage the flow of very large amounts of electrical energy. Component maker Murata, for example, reckons that the number of multilayer ceramic capacitors used in each vehicle could rise from between 1000 to 3000 parts today to 8000 when powertrains go electric.
Components for automotive applications Automotive passives have to work hard.
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