Data Brief

For further information contact your local STMicroelectronics sales office

Rev 1

January 2006

1/4

4

STEVAL-IFP002V1

High Side Driver - 8 Channel based on VN808

Features

Application conforms to: IEC 61000-4-4 (4kV),

IEC 61000-4-5 (2kV), IEC 61000-4-6 (10kV)

16 output channels up to 0.5A per channel

16 digital inputs & 2 digital output

Decoupling power & microcontroller section by

optocouplers

DC/DC converter on boards

Protection against Surge/Burst by ST Transils

Operation temperature -25°C to 85°C

Power supply up to 35V

Very low stand-by current

Applications

This reference design boards is an industrial

application of the ST high side drivers VN808 .

The boards respect international standards of the

electromagnetic compatibility as well as immunity

tests. They have been tested at different typical

ambient temperatures. The reference design is

suitable

for

use

in

Programmable

Logic

Controllers to produce the related digital outputs

according to IEC standards.

Circuit description

In order to protect the high-side driver (HSD) from

the harsh industrial conditions of power supply

lines, usually optocouplers and Transil diodes are

used to separate the application control circuits

from the power supply. The VN808 reference

design board uses multi-channel

optocouplers

suitable for surface-mounted assemblies that

consist of a photo transistor optically coupled to a

gallium-arsenide infrared emitting diode. The

isolation voltage for this type of optocoupler is

diodes

protect

the

HSD

against

transient

overvoltages. The reference design board is

assembled with uni-directional Transil diodes

because they protect the HSD against both

positive and negative surge pulses.

STEVAL-IFP002V1

www.st.com