Texas Instruments ESD2CANFD24W-Q1 ESD Protection Diode

Introduction

The Texas Instruments ESD2CANFD24W-Q1 is an automotive-qualified ESD protection diode designed for high-speed Controller Area Network (CAN) communication lines. It helps protect sensitive CAN transceivers and electronic control modules from electrostatic discharge and other transient events occurring on CANH and CANL bus connections.

Part Description

The ESD2CANFD24W-Q1 is a bidirectional, two-channel transient protection device housed in a compact DFN1110-3 package. It is specifically intended for CAN, CAN FD, CAN SIC, and CAN XL interfaces, where maintaining signal integrity while providing robust protection is important.

Key characteristics include:

• Two-channel bidirectional protection for CANH and CANL lines
• Automotive qualification for vehicle electronic systems
• Low typical line capacitance of 2 pF
• Low dynamic resistance to improve transient clamping performance
• Typical clamping voltage of 37 V
• Wide operating temperature range of -55°C to +150°C
• Compact DFN1110-3 surface-mount package
• Suitable for high-speed automotive communication buses

Its low capacitance helps minimize loading on differential bus lines, making it appropriate for faster CAN-family networks where protection components must not significantly affect communication performance.

Applications

Potential applications for the ESD2CANFD24W-Q1 include:

• CAN bus interface protection
• CAN FD network protection
• CAN SIC communication nodes
• CAN XL communication interfaces
• Automotive electronic control units
• Body control modules
• Battery management systems
• Powertrain control modules
• Advanced driver-assistance systems
• Vehicle gateway modules
• Telematics control units
• Automotive infotainment systems
• Industrial CAN communication ports

Industries

The component can be used in several industries, including:

• Automotive
• Electric vehicles
• Commercial transportation
• Agricultural equipment
• Construction and heavy machinery
• Industrial automation
• Robotics
• Renewable energy systems
• Smart infrastructure
• Transportation and railway electronics

Usage Ideas

1. Automotive CAN FD Gateway
   Add the ESD2CANFD24W-Q1 at the external CAN connector of a gateway ECU to protect the CANH and CANL lines from ESD events.

2. Electric Vehicle Battery Management System
   Use the diode near the CAN transceiver in a battery monitoring unit to protect communications between battery modules and the vehicle controller.

3. Industrial Motor Controller Network Node
   Integrate the device into a CAN-enabled motor drive or PLC expansion module to improve resilience against transient disturbances on field wiring.

Conclusion

The Texas Instruments ESD2CANFD24W-Q1 is a compact automotive ESD protection diode for dual CAN bus lines. With bidirectional protection, low 2 pF line capacitance, low dynamic resistance, and operation up to +150°C, it is well suited for protecting CAN, CAN FD, CAN SIC, and CAN XL interfaces in demanding automotive and industrial communication systems.