ST IFS006V1 User Manual

Smart inductive proximity switch demonstration board based

on the Ultralite 8-bit microcontroller and the TDE1708DFT

Features

■ Metal body detection using the eddy current

effect on the HF loses of a coil

■ High flexibility: MCU firmware can be modified

in accordance with application requirements

■ Sensitivity and hysteresis adjustment

■ In-circuit programming and debugging

capabilities

■ Analog and digital temperature compensation

■ PNP and NPN sensor functionality

configurations

■ Indicator status LED

■ Overload and short-circuit protection

■ GND and V

■ Compact design

■ Supply voltage: 6 V to 48 V DC

■ Temperature range: –25 °C to +85 °C

open wire protection

S

STEVAL-IFS006V1

Data Brief

STEVAL-IFS006V1

Description

The STEVAL-IFS006V1 demonstration board is
an inductive proximity switch design based on the
principle of metal body detection using the effect
of eddy currents on the HF losses of a coil.

It consists of a single transistor HF oscillator, the
ST7LITEUS5 microcontroller and the
TDE1708DFT intelligent power switch.

In addition to its simplicity, wide temperature
range and supply voltage variation, the inductive
proximity sensor design implemented in the
STEVAL-IFS006V1 demonstration board is also
compact and cost-effective.

July 2008 Rev 1 1/4

For further information contact your local STMicroelectronics sales office.

www.st.com

4

Block diagram STEVAL-IFS006V1

1 Block diagram

Figure 1. Smart inductive proximity switch

P1

+Vs1P3

1

+Vs1P7

10 nF

C1

P6

P5

P4

U1

TDE1708DFT

+5 V

LS

C2

100 nF

D1

8

1

L. S. OUT

LED DRIVER

IN

5

PA0

Status LED

1

LS

1

C

1

LED

7

+Vs

VREG +5 V

6

2

H. S. OUT

HS

A

LED

4

GND

DELAY

3

P8

1

1

1

1

HS1P12

C7

P11

P10

P9

9

C3

GND1P13

10 nF

10 nF

GND

+5 V +5 V

U2

PA0

10 KΩ

R4

7

8

SS

V

DD

V

PA5/AIN4/CLKIN2PA4/AIN33PA3/RESET

ST7LITEUS5

1

PA5

1.5 KΩ

R5

PA1

6

5

PA1/AIN1/ICCCLK

PA0/AIN0/ATPWM/ICCDATA

4

PA3

PA2/LTIC/AIN2

9

10 nF

C14

220 KΩ

R7

1.5 nF

C13

APM0023

P2

+5 V

PA8

PA0

PA1

2

6

4

ICCCLK

ICCDATA

GND

GND

GND

Con. ICC

1

3

5

R1

0 Ω

8

10

GND

RESET

DD

V

CLKIN

7

9

PA5

+5 V

C6

C5

C4

10 µF /

6.3 V

100 nF

100 nF

+5 V

1.5 nF

C8

4.7 KΩ

R2

D2

1N4148

2/4

P15

+5 VA

P14

+5 V

D3

Diag. LED

D5

D4

C9

100 pF

Q1

BC857B

1N4148

47 pF

C10

1

1

1.5 KΩ

R3

1N4148

470 pF

C12

L1

68 µH

R6

10 KΩ

10 nF

C11

STEVAL-IFS006V1 Revision history

2 Revision history

Table 1. Document revision history

Date Revision Changes

08-Jul-2008 1 Initial release.

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STEVAL-IFS006V1

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