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Linear movement with a 3D sensor
How to make a magnetic design
About this document
Scope and purpose
Aer reading this application note you will know how to make the magnetic design for a linear movement
application with a Hall based 3D sensor. Directly, magnet and design parameters are proposed here to quickly
provide a first running solution. Furthermore, some degrees of freedom or restrictions are presented. Go
directly to Easy to use examples for "slide by" to check out the magnetic design proposal.
Note: The following information is given as a hint for the implementation of our devices only and shall not
be regarded as a description or warranty of a certain functionality, condition or quality of the device.
Intended audience
This document is intended for designers to use a magnetic 3D sensor for linear position detection.
Introduction
This application note describes a possible realization of a linear movement application, e.g. for valve positions.
With the new product family of the 3D Magnetic Sensor, beginning with TLV493D-A1B6, Infineon oers an
innovative solution for three dimensional magnetic position sensing. By allowing a measurement of all three
components of a magnetic field at the same time, it enables a multitude of applications with dierent ranges.
Furthermore the integrated temperature sensor enables the application to compensate possible temperature-
dependent magnetic field changes. The family supports automotive requirements as well, e.g. with the
TLE493D-x.
Note: Please also check out the online simulation tool at the Infineon homepage:
https://design.infineon.com/3dsim/#/
Application Note Please read the Important Notice and Warnings at the end of this document 1.0
www.infineon.com 2017-11-28
