TLE5012B E3005 | SPI/HSM, SMD, GMR - Infineon Technologies

Overview

XENSIV™ - TLE5012B E3005 magnetic angle sensor for angular position sensing in automotive applications

The Infineon TLE5012B is a 360° angle sensor that detects the orientation of a magnetic field. This is achieved by measuring sine and cosine angle components with monolithic integrated Giant Magneto Resistance (iGMR) elements. These raw signals (sine and cosine) are digitally processed internally to calculate the angle orientation of the magnetic field (magnet). The TLE5012B is a pre-calibrated sensor. The calibration parameters are stored in laser fuses. At start-up the values of the fuses are written into flip-flops, where these values can be changed by the application-specific parameters. Further precision of the angle measurement over a wide temperature range and a long lifetime can be improved by enabling an optional internal autocalibration algorithm. Data communications are accomplished with a bi-directional Synchronous Serial Communication (SSC) that is SPI-compatible. The sensor configuration is stored in registers, which are accessible by the SSC interface. Additionally four other interfaces are available with the TLE5012B: Pulse-Width-Modulation (PWM) Protocol, Short-PWM-Code (SPC) Protocol, Hall Switch Mode (HSM) and Incremental Interface (IIF). These interfaces can be used in parallel with SSC or alone. Pre-configured sensor derivates with different interface settings are available. Online diagnostic functions are provided to ensure reliable operation.

Summary of Features

Giant Magneto Resistance (GMR)-based principle
Integrated magnetic field sensing for angle measurement
360° angle measurement with revolution counter and angle speed measurement
Two separate highly accurate single bit SD-ADC
15 bit representation of absolute angle value on the output (resolution of 0.01°)
16 bit representation of sine / cosine values on the interface
Max. 1.0° angle error over lifetime and temperature-range with activated auto-calibration
Bi-directional SSC Interface up to 8 Mbit/s
Supports Safety Integrity Level (SIL) with diagnostic functions and status information
Interfaces: SSC, PWM, Incremental Interface (IIF), Hall Switch Mode (HSM), Short PWM Code (SPC, based on SENT protocol defined in SAE J2716)
Output pins can be configured (programmed or pre-configured) as push-pull or open-drain
Bus mode operation of multiple sensors on one line is possible with SSC or SPC interface
0.25 µm CMOS technology
Automotive qualified: -40°C to 150°C (junction temperature)
ESD > 4 kV (HBM)
RoHS compliant (Pb-free package)
Halogen-free

PRO-SIL™ Features

Test vectors switchable to ADC input (activated via SSC interface)
Inversion or combination of filter input streams (activated via SSC interface)
Data transmission check via 8-bit Cyclic Redundancy Check (CRC) for SSC communication and 4-bit CRC nibble for SPC interface
Built-in Self-test (BIST) routines for ISM, CORDIC, CCU, ADCs run at startup
Two independent active interfaces possible
Overvoltage and undervoltage detection

Potential Applications