TLE5014 datasheet(7/45 Pages) INFINEON

7 / 45 page

Final Datasheet

Rev. 1.0

2018-04-04

TLE5014

Functional Description

Digital Signal Processing Unit ISM_SAF

The Digital Signal Processing Unit ISM_SAF performs the internal safety mechanism and plausibility checks.

Furthermore, a second CORDIC algorithm is implemented in a diverse way as in the ISM_ALG. This is for cross

checking the angle calculation

Interface

The Interface block is used to generate the PWM, SENT and SPC signals

Angle Compare

This digital block compares the angle value calculated by ISM_ALG and ISM_SAF. In case they are not identical,

an error is indicated in the transmitted protocol.

EEPROM

The EEPROM contains the configuration and calibration parameters. A part of the EEPROM can be accessed by

the customer for application specific configuration of the device. Programming of the EEPROM is achieved

with the SICI interface. Programming mode can be accessed directly after power-up of the IC.

1.3

Sensing Principle

The Giant Magneto Resistance (GMR) sensor is implemented using vertical integration. This means that the

GMR-sensitive areas are integrated above the logic part of the TLE5014 device. These GMR elements change

their resistance depending on the direction of the magnetic field.

Four individual GMR elements are connected to one Wheatstone sensor bridge. These GMR elements sense

one of two components of the applied magnetic field:

•X component, Vx (cosine) or the

•Y component, Vy (sine)

With this full-bridge structure the maximum GMR signal is available and temperature effects cancel out each

other.

TLE5014 데이터시트(PDF) 7 Page - Infineon Technologies AG