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| STEVAL-IFP002V1 High Side Driver - 8 Channel based on VN808 Data Brief 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 -25C to 85C Power supply up to 35V Very low stand-by current STEVAL-IFP002V1 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 2500 VRMS. The clamping function of Transil 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. January 2006 For further information contact your local STMicroelectronics sales office Rev 1 1/4 www.st.com 4 Board Schematic STEVAL-IFP002V1 1 Figure 1. Board Schematic Scheme 2/4 STEVAL-IFP002V1 Revision history 2 Revision history Date 31-Jan-2006 Revision 1 Initial release. Changes 3/4 STEVAL-IFP002V1 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners (c) 2006 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com 4/4 |
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