ST UM1682 Manuale utente

June 2014 DocID025392 Rev 2 1/11

UM1682

User manual

STEVAL-VNH5050A Evaluation board

Introduction

STEVAL-VNH5050A offers dedicated power stage and controls suitable for electric DC

motor driving. This evaluation board features the VNH5050A. It is an H-bridge belonging to

the VNH Motor Driver series based on VIPower

proprietary technology. Typical

applications are dual washer pump and seat regulation.

This evaluation board consists of a motherboard (STM8 Universal Board) and a daughter-

board. The motherboard, based on STM8 microcontroller, provides the logic section for

monitoring and driving the VNH5050A assembled in the daughter-board. With the aim of

simplifying board usage and settings, ST provides dedicated and user-friendly software

including a Graphic User Interface (GUI). The GUI allows setting VNH5050A parameters

(PWM, Motor direction…), while showing real time device diagnostic information, such as

current output evolution, battery voltage monitoring, board temperature and much more.

Figure 1. STEVAL-VNH5050A

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www.st.com

Contents UM1682

2/11 DocID025392 Rev 2

Contents

1 Hardware description and setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.1 Components description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.2 Board connections and setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2 Software installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.1 USB Driver installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.2 Graphical User Interface (GUI) installation . . . . . . . . . . . . . . . . . . . . . . . . . 7

3 Graphical User Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

4 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

DocID025392 Rev 2 3/11

UM1682 List of figures

List of figures

Figure 1. STEVAL-VNH5050A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Figure 2. STEVAL-VNH5050A block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Figure 3. STEVAL-VNH5050A connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 4. Driver installation window (1/2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 5. Driver installation window (2/2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 6. GUI installation (1/2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 7. GUI installation (2/2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 8. Main Window (1/2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 9. Main Window (2/2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 10. Current measurement (Graph) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 11. Driving profiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Hardware description and setup UM1682

4/11 DocID025392 Rev 2

1 Hardware description and setup

This section provides a description of the main components of this evaluation kit, giving

instruction for a quick setup of the motor control system.

1.1 Components description

The evaluation kit consists of two main components:

•Mother board based on STM8A microcontroller, interfacing host PC with H-Bridge

controller. The communication with the PC is established through isolated USB.

•Daughter Board assembling VNH5050A and the reverse battery protection. The DC

motor has to be connected to this module.

The daughter board and the mother board are provided already properly plugged .

Figure 2. STEVAL-VNH5050A block diagram

1.2 Board connections and setup

Below figure shows the placement of the connectors to be used for supplying the evaluation

board, plugging the electric DC motor and connecting with a host PC through USB cable.

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DocID025392 Rev 2 5/11

UM1682 Hardware description and setup

Figure 3. STEVAL-VNH5050A connections

Jumpers are already set in their default position.

Table 1. Motherboard jumper configuration

Jumper Description Default Position

JP2 + 5V_DB Not present

JP2 + 5V_STM8 Present

JP4 RxD USART

JP5 TxD USART

JP6 Reset STM8

JP7 Swim STM8

0RWKHU%RDUG6XSSO\9

'&0RWRU± 3KDVH$

'&0RWRU± 3KDVH%

'DXJKWHU%RDUG6XSSO\9

86%FRQQHFWRU

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Software installation UM1682

6/11 DocID025392 Rev 2

2 Software installation

2.1 USB Driver installation

The following installation procedure starts automatically after plugging the Evaluation Board

to the host PC.

Figure 4. Driver installation window (1/2)

Figure 5. Driver installation window (2/2)

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91+VRIWZDUHLQVWDOODWLRQSDFNDJH

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DocID025392 Rev 2 7/11

UM1682 Software installation

2.2 Graphical User Interface (GUI) installation

Launching Setup.exe, GUI installs to the destination folder indicated by the wizard.

Default folder is "C:\Program Files(x86)\VNHFULLBridge", but the user is free to indicate

another path name and folder.

Figure 6. GUI installation (1/2)

Figure 7. GUI installation (2/2)

GAPG2406141159RI

Program folder on Start menu

GUI dekstop icon

GAPG2406141206RI

Graphical User Interface UM1682

8/11 DocID025392 Rev 2

3 Graphical User Interface

Figure 8. Main Window (1/2)

Figure 9. Main Window (2/2)

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DocID025392 Rev 2 9/11

UM1682 Graphical User Interface

Figure 10. Current measurement (Graph)

Figure 11. Driving profiles

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Revision history UM1682

10/11 DocID025392 Rev 2

4 Revision history

Table 2. Document revision history

Date Revision Changes

16-Oct-2013 1 Initial release.

24-Jun-2014 2 Added Section 2.1 and Section 2.2.

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