TLE4968-1MSLASHL datasheet(49/91 Pages) INFINEON

49 / 91 page

www.infineon.com/speed-sensors

www.infineon.com/magnetic-sensors

Magnetic speed sensors

Safety first by Infineon wheel speed sensors

Nowadays, wheel speed sensors have to support an

ever-growing list of applications. Years ago, ABS systems

simply needed to know if a wheel was blocked, and then

ESC used the accurate speed of all four wheels for its cor-

rections. Since then, an increasing number of modules in

the car take the wheel speed into account for their intelli-

gent functions. The electrical parking brake, for example,

needs to know about every inch a car moves when it’s sup-

posed to be stationary, and iTPMS uses sophisticated algo-

rithms to determine if a wheel lacks air pressure, and even

the central locking locks the doors after a couple of meters

and the radio turns up the volume in line with increasing

speed. All of the above rely on accurate information from

the wheel speed sensor.

Applications

› Wheel speed sensing in automotive applications

› Antilock Braking Systems (ABS)

› Electronic Stability Programs (ESP)

› Automatic transmissions

› iTPMS TLE5041plusC, TLE5045iC and TLE5046iC

TLE4941plusC/TLE4942-1C/TLE4943C

My car, how fast and how far does it drive?

The TLE4941plusC, our best selling sensor, has become an industry standard for wheel

speed sensing. TLE4942-1C and TLE4943C are complementing this sensor with additional

direction information using PWM or AK protocol, respectively.

As a single chip sensor it magnetically measures the cars wheel speed with its differential Hall

technology, making it the ideal all-purpose sensor, equally suitable for pole wheel and steel

wheel applications. Theses sensors are immune towards any kind of undesired magnetic stray

fields, ferromagnetic particles or other disturbances, because of their differential principle.

Features

› Family of Hall sensors available with and without direction detection

› Excellent stray field robustness

Applications

› Pole wheel applications

› Steel/tooth wheel applications

by using back bias magnet

Wheel speed sensor selection guide for high selling product portfolio

Product

Sensor

technology

Pole wheel

Steel wheel

ISO 26262

Direction

detection

Protocol

iTPMS

TLE4941plusC

Hall differential

–

Standard

–

TLE4942-1C

Hall differential

–

PWM

–

TLE4943C

Hall differential

–

TLE4968-1M/L Datasheet(PDF) 49 Page - Infineon Technologies AG

TLE4968-1M/L Datasheet(HTML) 49 Page - Infineon Technologies AG

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