Where is semiconductor used in cars: Everywhere

In today's automotive landscape, a quiet revolution is taking place beneath the hood and within the dashboard. Semiconductors, once confined to electronic gadgets, have emerged as the unsung heroes of automotive technology. These tiny chips of silicon are orchestrating a symphony of innovations, transforming everything from safety features to engine performance.

Introduction

In an era defined by technological breakthroughs, semiconductors in car stands as a testament to innovation’s boundless potential. Behind the sleek exteriors and powerful engines of modern vehicles lies a realm of cutting-edge electronics, all orchestrated by a silent hero: the semiconductor. These unassuming chips of silicon have become the linchpin of automotive advancement, reshaping everything from engine performance to safety features.

Consider, for instance, the Advanced Driver-Assistance Systems (ADAS) present in many contemporary vehicles. These systems, powered by a network of sophisticated semiconductors, are akin to a virtual co-pilot, constantly monitoring road conditions, detecting obstacles, and even executing corrective actions. They exemplify how semiconductors are not just accessories, but vital enablers of safer, smarter driving.

In this exploration, we’ll unravel the intricate web of applications that semiconductors facilitate within the automotive industry. From propelling the electric vehicle revolution to enhancing the infotainment experience, the role of semiconductors is nothing short of revolutionary. Join us as we embark on a journey through the automotive landscape, guided by omnipresent force that is semiconductor technology.

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1. Engine Control Units (ECUs): Semiconductors in Car

Semiconductors serve as the brain behind a car engine control unit. They process data from various sensors throughout the vehicle, optimizing fuel injection, ignition timing, and exhaust emissions. This leads to improved fuel efficiency, reduced emissions, and enhanced overall engine performance.

The Engine Control Module (ECM) in a vehicle, such as the Bosch Motronic system, utilizes semiconductors to control fuel injection timing and optimize engine performance based on data from various sensors.

2. Advanced Driver-Assistance Systems (ADAS): Semiconductors in Car

Semiconductors are the backbone of ADAS, which includes features like adaptive cruise control, lane-keeping assist, and automatic emergency braking in a car. These systems rely on a network of sensors, cameras, and radar units that communicate through sophisticated semiconductor-based processors. They enhance vehicle safety and contribute to the development of autonomous driving technologies.

The NVIDIA Drive AGX platform, powered by powerful semiconductor processors, is used in various ADAS applications like autonomous driving, adaptive cruise control, and lane-keeping assist.

3. Infotainment Systems: Semiconductors in Car

The multimedia experience in modern car, including touchscreens, GPS navigation, audio systems, and connectivity features, relies heavily on semiconductors. These components ensure smooth and efficient operation of infotainment systems, providing drivers and passengers with a seamless and enjoyable experience.

The infotainment system in a Tesla electric vehicle, driven by NVIDIA’s Tegra processors, provides a seamless multimedia experience with features like touchscreen controls, GPS navigation, audio streaming, and more.

4. Electric Vehicle (EV) Powertrains: Semiconductors in Car

Semiconductors play a pivotal role in the power electronics of electric vehicles. They control the flow of electricity between the battery, motor, and other components. This ensures optimal performance, efficiency, and safety in EVs, ultimately contributing to the transition towards more sustainable transportation.

The power electronics in a Tesla Model S, managed by semiconductor-based inverters and controllers, control the flow of electricity between the battery pack and the electric motor to optimize performance and energy efficiency.

5. Lighting Systems: Semiconductors in Car

LED and OLED lighting systems in modern cars are made possible by semiconductor automotive technology. Semiconductors control the intensity, color, and pattern of lighting elements, offering not only aesthetic customization but also improved visibility and energy efficiency.

LED headlight systems in a BMW M5, controlled by semiconductor chips, enable dynamic lighting patterns and adaptive features for improved visibility and energy efficiency.

6. Transmission Control Units (TCUs): Semiconductors in Car

Semiconductors manage the shifting and operation of automatic transmissions in vehicles. By precisely controlling the engagement of gears, semiconductors automotive industry contribute to smoother acceleration, better fuel efficiency, and overall enhanced driving experiences.

The transmission control unit in a modern automatic transmission, like those used in Honda vehicles, utilizes semiconductor-based components to precisely control gear engagement for smoother shifting and improved fuel efficiency.

7. Battery Management Systems (BMS):

In electric and hybrid vehicles, semiconductor-based BMS play a vital role in monitoring and regulating the state of the battery. This ensures safe charging, discharging, and overall performance of the vehicle’s energy storage system.

The BMS in a Chevrolet Bolt EV, incorporating semiconductor-based components, monitors and manages the battery’s state of charge, temperature, and voltage to ensure safe and efficient operation.

8. Keyless Entry and Start Systems:

Semiconductors enable the secure and convenient keyless entry and start systems in modern cars. Through radio frequency identification (RFID) and other technologies, they authenticate and communicate with the vehicle, providing a seamless and secure user experience.

The keyless entry and start system in a BMW 7 Series, leveraging semiconductor-based RFID technology, allows drivers to unlock and start the vehicle without physically using a traditional key.

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Conclusion:

Semiconductors are the unsung heroes of automotive technology, driving innovation and revolutionizing the way we experience vehicles. From enhancing safety through ADAS to powering the electric revolution, semiconductors are at the forefront of automotive advancements.

Kumar Priyadarshi
Kumar Priyadarshi

Kumar Joined IISER Pune after qualifying IIT-JEE in 2012. In his 5th year, he travelled to Singapore for his master’s thesis which yielded a Research Paper in ACS Nano. Kumar Joined Global Foundries as a process Engineer in Singapore working at 40 nm Process node. Working as a scientist at IIT Bombay as Senior Scientist, Kumar Led the team which built India’s 1st Memory Chip with Semiconductor Lab (SCL).

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