車載用ESDプロテクション

You can purchase the board directly from the STMicroelectronics eStore or from major online electronics distributors. You can download the data brief here: STEVAL-OET003V1.

Our ESDCAN can address CAN-FD, CAN-FD SiC, and CANXL up to 20Mbps.

Current vehicle networks include CAN, LIN, FlexRay, MOST, and the new in-vehicle Ethernet. CAN-FD and in-vehicle Ethernet are gaining popularity for more complex and integrated car functions.

Yes. Whatever the bus topology (star, ring, or any combination), the ESDCAN can be used to protect the CAN transceivers. For long distance CAN buses, we recommend using ESDCAN02, ESDCAN03, or ESDCAN05 with lower parasitic capacitance.

Yes, the whole ESDCAN series is automotive grade. Refer to our official website here: ESDCAN series

ESD discharges may damage CAN protocol chips. Most CAN transceivers are rated (human body model 500 V or 2 kV or 8 kV) for ESD, but most carmakers require compliance above the far stricter ISO 10605 requirements, which are 8 kV contact and 15 kV air discharge. If ESD protection is not implemented correctly, the CAN transceiver may be damaged and all the vehicle functions in the same CAN network may be compromised.

If the MCU embeds a CAN controller only, then a CAN transceiver is needed and must be protected with an ESDCAN. If the MCU embeds a CAN transceiver, then there is no need for an additional chip to interface with the PHY layer, but ESDCAN is needed to protect the embedded CAN transceiver according to ISO 10605 standard and ISO 7637 standard.

The automotive environment is complex with many interference sources, so you must pay careful attention to EMC anti-interference and ESD protection. Refer to our application note AN5878 on how to design a robust automotive CAN system.

In the ISO 10605 standard, human ESD discharges are considered up to 15 kV for direct contact discharge. The RC network to be considered is 150 pF and 330 Ω (to simulate discharge through a metallic object like a tool, a key, etc.) or 2 kΩ (to simulate discharge through the skin).

STMicroelectronics ESD leakage current is negligible; usually in the order of nanoampere. Please refer to our product specification (datasheet here: Protections and EMI filters/ESD Protection/Automotive ESD protection: ESDCAN series.

Certainly. The STMicroelectronics ESD protection capability is higher for automotive products, so our ESD devices are always appropriate for industrial applications.

There is no aging on silicon devices. As long as surges remain below the datasheet rating, the ESDCAN continues to operate without degradation of its characteristics (such as clamping efficiency).

Please refer to this document: Application note AN2689 protection of automotive electronics from electrical hazards, guidelines for design and component selection.

Use the STMicroelectronics low capacitance ESDCAN for high-speed CAN, such as 3 pF and 17 pF. Low speed CAN may use 30 pF, or the same low capacitance devices used for high-speed lines. See ESDCAN01-2BLY, ESDCAN03-2BWY, ESDCAN03-2BM3Y for product details. The first two products have different capacitance values, and the third has low capacitance with a small footprint.

Yes. ST ESDCAN0x-2BWY and ESDCANx-2BM3Y operate from -55 to +175 °C.

We offer small SOT23-3L, SOT323-3L, and QFN-3L (also called DFN1110) packages with the following respective footprints in mm:

• 3.1 mm x 2.43 mm
• 2.7 mm x 1.72 mm
• 0.89 mm x 1.31 mm

STMicroelectronics offers a wide range of AEC-Q101 CAN protection devices for passenger cars (12 V batteries) or commercial vehicles (24 V batteries). STMicroelectronics ESDCAN covers fault-tolerant CAN, CAN-FD, LIN, and even FlexRay communication protocols. It can provide 12 V and 24 V.

Yes. Our ESDCAN dual-TVS protection devices embed both CAN_H and CAN_L TVS in the same package.

ESDCAN devices are designed to protect the CAN data lines, which are not subject to load dump surges. Load dump surges must be considered on certain power lines (VBAT lines mainly).

Our ESDCAN devices are mainly meant to protect CAN transceivers, which are very often made with thin IC technology. However, ESDCAN devices also protect termination resistors and capacitors for MDI (medium dependent interface), which may be affected by ESD pulses or transient surges. As the CAN bus is a differential bus, any spikes on the MDI resistors or capacitors may affect the matching lines and degrade the signal integrity. Our ESDCAN devices ensure that these effects are avoided.