Bidirectional TVS ESD protection diodes compatible with CAN FD (CAN with Flexible Data rate) high-speed in-vehicle communication, ESDCANxx series have been developed by ROHM. As advanced driver assistance systems (ADAS) and autonomous driving continue to progress, there is a growing need for such protocols.
For secure, real-time data transfer between automobile ECUs (Electronic Control Units), CAN FD is an essential communication protocol. By shielding electronic components like ECUs from surges and electrostatic discharge (ESD) and preserving signal integrity in high-speed communication systems like CAN FD, the novel products provide high-quality in-vehicle transmission.
ROHM developed the ESDCANxx series, which combines exceptional surge tolerance with low terminal capacitance, to satisfy market demands. There are two package types that allow standoff voltages (VRWM) of 24V and 27V: SOT-23 (2.9mm × 2.4mm) and DFN1010 (1.0mm × 1.0mm).
The Growing Adoption of CAN FD in Modern Automotive
The need for quicker, more reliable automotive communication is growing as ADAS and autonomous driving technologies advance quickly. Large volumes of data from sensors like cameras, LiDAR, and radar must be processed quickly and accurately for autonomous driving in particular. This has led to the adoption of CAN FD, which allows for quicker, higher capacity data transfer than regular CAN used in automotive communication.
Stable transmission, even under challenging conditions, is essential to achieving high-speed in-vehicle communication. As a result, there is an increasing need for protection components with low terminal capacitance, high clamping voltage performance, and a surge current rating. As a result, it is anticipated that the market for TVS diodes for automotive communication would keep expanding.
The SOT-23 Package Includes Four Models:
- 24V ESDCAN24HPY / ESDCAN24HXY and 27V ESDCAN27HPY / ESDCAN27HXY.
Similarly, the DFN1010 package is also offered in four models:
24V ESDCAN24YPA / ESDCAN24YXA and 27V ESDCAN27YPA / ESDCAN27YXA, totaling 8 products in the lineup.
The new products’ improved element structure prevents signal deterioration during high-speed connection by lowering terminal capacitance to a maximum of 3.5pF. Additionally, high surge tolerance is attained, greatly enhancing the security of electronic equipment in vehicle settings.
For instance, as compared to ordinary CAN FD-compatible goods, the 27V items in the DFN1010 package offer a clamping voltage that is 16% lower and a surge current rating that is approximately 3.2 times higher.
This ensures excellent reliability even in challenging automotive conditions by successfully protecting costly surge-sensitive electronic equipment, such as in-vehicle ECUs.
In order to realize a safer, more sophisticated mobility society, ROHM will keep creating solutions that enable even faster in-vehicle connectivity in autonomous driving and communication contexts.
Application Examples
- Autonomous driving and Advanced Driver Assistance Systems (ADAS)
- Automotive electric powertrain systems
- In-vehicle infotainment systems
Online Distributor Information
Sales Launch Date: December 2024
Pricing: $0.9/unit (excluding tax)
Online Distributors: DigiKey™, Mouser™ and Farnell™
The products will be offered at other online distributors as they become available.
Target Products
SOT23 Package: ESDCAN24HPY, ESDCAN24HXY, ESDCAN27HPY, ESDCAN27HXY
DFN1010 Package: ESDCAN24YPA, ESDCAN24YXA, ESDCAN27YPA, ESDCAN27YXA
