Infineon XENSIV™ TLE55493 Wheel Speed Sensors

Introduction

The Infineon Technologies XENSIV™ TLE55493 is a magnetic wheel speed sensor designed for accurate rotational speed measurement in demanding automotive systems. Built for safety-critical vehicle functions, it combines dependable magnetic sensing with robust operation in harsh environments.

Part Description

The TLE55493 is an automotive-grade magnetic wheel speed sensor from Infineon’s XENSIV™ portfolio. It detects wheel rotation and provides highly accurate speed information for vehicle control electronics.

Its design is intended to maintain reliable measurement performance despite vibration, temperature variation, contamination, and external magnetic field disturbances commonly encountered near wheels, brakes, and drivetrains. The device is qualified to AEC-Q100 Grade requirements and supports functional-safety applications up to ASIL D.

Key characteristics include:

• Magnetic sensing for rotational speed detection
• High-accuracy wheel speed measurement
• Resistance to magnetic interference and environmental disturbances
• Robust performance under vibration and harsh automotive conditions
• Support for anti-lock braking system applications
• Suitable for indirect tire pressure monitoring systems
• AEC-Q100 Grade-qualified automotive reliability
• Functional-safety support up to ASIL D

Applications

Potential applications for the TLE55493 include:

• Anti-lock braking systems (ABS)
• Electronic stability control systems
• Traction control systems
• Wheel-speed-based vehicle dynamics systems
• Indirect tire pressure monitoring systems (iTPMS)
• Hill-hold and hill-descent control systems
• Regenerative braking control
• Electric vehicle drivetrain monitoring
• Automotive wheel-end sensing
• Rotational speed monitoring in mobility platforms

Industries

Possible industries for this sensor include:

• Automotive manufacturing
• Electric vehicle manufacturing
• Commercial and heavy-duty vehicles
• Motorcycles and powersports
• Agricultural machinery
• Construction and off-highway equipment
• Industrial vehicle manufacturing
• Autonomous and advanced mobility systems
• Automotive aftermarket and service equipment

Usage Ideas

1. ABS Wheel Monitoring Module
   Build a wheel-speed sensing module that supplies rotational data to an anti-lock braking controller for improved braking stability.

2. Indirect TPMS Demonstrator
   Develop a tire-pressure monitoring prototype that compares wheel rotation characteristics to identify potential underinflated tires.

3. Electric Vehicle Traction Controller
   Use wheel-speed feedback from multiple sensors to help a traction-control system manage motor torque during acceleration on low-grip surfaces.

Conclusion

The Infineon XENSIV™ TLE55493 is a robust magnetic wheel speed sensor for safety-focused automotive applications. Its accurate rotational sensing, resistance to harsh conditions, automotive qualification, and support for ASIL D safety requirements make it well suited to modern braking, stability, traction, and tire-monitoring systems.