AN2679 Application note Smart inductive proximity switch introduces the design principle, circuit description, usage and features of STEVAL-IFS006V1 inductive proximity switch demonstration board, which is suitable for simple, price-sensitive applications.
This document describes the STEVAL-IFSOO6V1, a demonstration board designed for smart inductive proximity switches. The board utilizes a single transistor HF oscillator, an ST7LITEUSS microcontroller, and the TDE1708DFT intelligent power switch to detect metal objects via the eddy current effect. It offers features such as sensitivity adjustment, temperature compensation, and PNP/NPN output configurations.
| Supply voltage | 6 V to 48 VDC |
|---|---|
| Temperature range | -25 °C to +85 °C |
| Oscillator frequency range | 100 KHz to 800 kHz |
| Microcontroller | ST7LITEUSS |
| Power switch | TDE1708DFT |
The board supports a supply voltage range of 6 V to 48 VDC.
The board operates with a DC supply voltage between 6 V and 48 V.
The board functions within a temperature range of -25 °C to +85 °C.
The voltage across diode D2 reduces by approximately -2 mV/k as temperature increases.