ST AN2443 APPLICATION NOTE

AN2443

Application note

PLC actuator high-side driver solution with CMOS interface based on VN808CM-E High-side Driver

Main Features

■8 output channels (8 x 0.7A)

■1 feedback channel - diagnostic

■CMOS compatible signals allow direct connection to a microcontroller

■Outputs + Diagnostic indicated by LEDs

■EMC Immunity Proof ± 4kV level EFT (IEC 61000-4-4), ± 2kV Voltage Surge (IEC 61000- 4-5)

■Compatible with existing ST tools (CANIC10, ARMIC30 …)

■10.5 ÷ 33V DC Supply Voltage range

Introduction

This application note describes the STEVAL-IFP001V1 hardware implementation. It focus on PCB design which is critical for EMC immunity robustness and thermal management.

The VN808CM-E is a monolithic device designed in STMicroelectronics VIPower M0-3 technology. The product is intended for driving any kind of load with one side connected to ground. It can be driven by using a 5.0V or 3.3V logic supply. This allows realizing an output stage without optical decoupling or another level-shifting. Active current limitation, combined with thermal shutdown and automatic restart, protect the device against accidental or longtime short circuit and overload.

The complete solution is implemented on a double-face board with only two copper layers which is cost-effective, also precision of routing is cost-optimized.

STEVAL-IFP001V1 is delivered in a set with CD-ROM including board fabrication data (Gerber files), this user manual and related devices documentation (for latest information, please have a look at www.st.com).

December 2006

Rev 2

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www.st.com

Contents	AN2443

Contents

1	Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 5
2	Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	6
3	Connection description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	7
4	Thermal management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	9
5	EMC Immunity testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	9
6	Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	10
7	Reference documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	10
Appendix A Bill of materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		11
Appendix B PCB layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		12
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		14

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AN2443	List of tables

List of tables

Table 1. Connectors JP1 and JP2 signal assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Table 2. EMC Immunity standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Table 3. STEVAL-IFP001V1 technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Table 4. List of components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Table 5. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

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List of figures	AN2443

List of figures

Figure 1. STEVAL-IFP001V1 application - top view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Figure 2. STEVAL-IFP001V1 application - bottom view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Figure 3. JP1 connector pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Figure 4. JP2 connector pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Figure 5. Reverse polarity protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Figure 6. Application schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Figure 7. Thermal vias placement suggestion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Figure 8. PCB - top layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Figure 9. PCB - bottom layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Figure 10. PCB - silk screen top . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Figure 11. PCB - silk screen bottom . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

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AN2443	Overview

1 Overview

Application is built on double-face, FR4 substrate, printed circuit board with 35µm copper plating. PCB dimensions are 94 mm x 74 mm.

Figure 1. STEVAL-IFP001V1 application - top view

Figure 2. STEVAL-IFP001V1 application - bottom view

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