TLE4955C E41184 - Infineon Technologies

Overview

XENSIV™ - TLE4955C E41184 magnetic speed sensor for transmissions in automotive and industrial markets

The Infineon XENSIV^TM TLE4955 is a family of differential Hall sensors specifically designed to meet the latest requirements in transmission vibration suppression. It provides best-in-class vibration suppression for applications, that require a two-wire current interface. The magnetic speed sensor family provides a similar algorithm plus dynamic self-calibration, jitter and sensitivity levels as our proven TLE4953, thus ensuring accurate speed measurements in the harshest of environments for both fine and coarse target wheels. Customers can choose different interface protocol versions we offer.

Our TLE4955C-E41184 is an integrated differential Hall effect sensor especially for transmission applications in the automotive as well as industrial sector, with two wire PWM output current interface. The sensors´ basic function is to provide information about rotational speed and direction of rotation to the transmission control unit. It includes a sophisticated algorithm which actively suppresses vibration while keeping excellent air-gap performance.

Summary of Features

High magnetic sensitivity
Large operating air-gap
Two wire PWM current interface
Fast start-up
Dynamic self calibration principle
Adaptive hysteresis
Detection of rotation direction
High vibration suppression capability
From zero speed up to 12 kHz1)
Wide operating temperature ranges
High resistance to piezo effects
Single chip solution
Magnetic encoder and ferromagnetic wheel application
South and north pole pre-induction possible
Green package with lead-free plating
Module style package with integrated overmolded capacitor ²⁾
- 1.8 nF between VDD and GND
AEC-Q100 qualified
Improvements vs. TLE4955C-E4: device especially designed for back-bias applications
- optimized _ΔBdir-limit for direction channel
- optimized vibration suppression
- optimized hysteresis levels