July 2008

Rev 1

1/16

AN2679

Application note

Smart inductive proximity switch

Introduction

The STEVAL-IFS006V1 inductive proximity switch demonstration board is designed based

on the principle of metal body detection using the eddy current effect on the HF losses of a

coil. It consists of a single transistor HF oscillator, an ST7LITEUS5 microcontroller and the

TDE1708DFT intelligent power switch. The board is a compact and cost-effective solution

for an inductive proximity sensor designed for simplicity and for a wide temperature range

and supply voltage variations. Other board features include:

requirements

Figure 1.

Smart inductive proximity switch demonstration board

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