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 6 1000-

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 implementatio n. 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 b y using a 5.0V or 3.3V log ic supply. Th is allows re alizing 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 1/15

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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