Innovative Protection Solutions by ROHM for Autonomous Vehicles

Revolutionizing In-Vehicle Communication Safety

ROHM Semiconductor has launched a new line of bidirectional TVS diodes designed specifically for CAN FD, a critical technology for communication in autonomous vehicles. This innovation aligns perfectly with the growing need for high-speed, reliable data transmission essential for the advancement of autonomous driving and advanced driver assistance systems (ADAS). CAN FD is particularly beneficial as it allows rapid communication between various electronic control units (ECUs) in vehicles.

Addressing Challenges of Modern Automotive Communication

The automotive landscape is changing rapidly, pushing the envelope for what is expected from vehicle communication technologies. With autonomous driving technology requiring the processing of extensive data from sensors, the demand for CAN FD has surged. This technology not only transfers data at higher rates than traditional systems but also supports a greater volume of information, which is indispensable for tasks such as object detection and vehicle navigation.

Ensuring Reliability in Harsh Conditions

Implementing efficient communication systems in vehicles necessitates that these systems operate reliably even in extreme conditions. This reality has increased the demand for protective components that deliver low capacitance, superior surge ratings, and robust clamping voltage performance. The market for automotive-related TVS diodes is predicted to expand significantly as a result.

Introducing ESDCANxx Series for Enhanced Performance

To cater to this market need, ROHM presents the ESDCANxx series of diodes which combine low terminal capacitance with impressive surge tolerance. Available in two package configurations—SOT-23 and DFN1010—these products support various standoff voltages, including 24V and 27V, allowing for tailored solutions to meet diverse automotive applications.

Models and Specifications

The SOT-23 package encompasses four models offering 24V options such as ESDCAN24HPY and ESDCAN24HXY, alongside 27V products like ESDCAN27HPY and ESDCAN27HXY. Meanwhile, the DFN1010 package similarly features four models, ensuring a broad selection for various automotive needs.

Benefits for Automotive Electronics

ROHM’s latest TVS diodes are engineered with an advanced element structure that significantly decreases terminal capacitance—down to a maximum of 3.5pF—effectively preventing any signal degradation during high-speed data exchanges. With enhanced surge tolerance and 16% lower clamping voltage, these devices protect sensitive automotive electronics such as in-vehicle ECUs, safeguarding them from potential damage during voltage spikes.

Further enhancing their appeal, the 27V options from the DFN1010 package provide an astounding surge current rating that is approximately 3.2 times higher than other products in the market, promoting increased efficiency and reliability in automotive environments.

Applications of the New Diodes

The ESDCANxx series is well-suited for various applications, including:

• Autonomous driving systems and Advanced Driver Assistance Systems (ADAS)
• Automotive electric powertrain systems
• In-vehicle infotainment systems

Sales and Availability

These innovative products are slated for launch in December 2024, with availability through major online distributors such as DigiKey™, Mouser™, and Farnell™. ROHM is committed to expanding the reach of its products, ensuring that these new diodes meet the growing demands of the automotive industry.

Continuing Innovation for the Future

As the automotive sector strives for breakthroughs in autonomous driving technology, ROHM is dedicated to advancing the development of products that facilitate even greater speeds and safety measures in in-vehicle communications, shaping a more secure and advanced mobility landscape.

Frequently Asked Questions

What are TVS diodes and how do they work?

TVS diodes are protection devices used to safeguard electronic circuits against voltage spikes. They work by clamping excessive voltage and redirecting the surge away from sensitive components.

Why is CAN FD important for autonomous vehicles?

CAN FD allows for faster data transmission, which is crucial for processing large amounts of information from various sensors in real-time, enhancing the overall safety and efficiency of autonomous systems.

How do ROHM's new diodes improve vehicle communication?

ROHM's new TVS diodes reduce signal degradation during high-speed communication and protect against surges, ensuring reliable data transfer in the harsh automotive environment.

When will the ESDCANxx series be available for purchase?

The ESDCANxx series will be available starting in December 2024 through major online distributors.

What applications can benefit from ROHM's new diodes?

Applications include autonomous driving, ADAS, electric powertrains, and infotainment systems, showcasing their versatility in modern vehicles.

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