BOOST-DRV8711 - Texas Instruments

User's Guide

SLVU967–May 2014

BOOST-DRV8711

This document is provided with the BOOST-DRV8711 Stepper Motor BoosterPack as a supplement to the

DRV8711 datasheet (SLVSC40) and CSD88537ND datasheet (SLPS455) to detail the hardware setup

and operation of the BoosterPack.

Contents

1 BOOST-DRV8711 Views ................................................................................................... 2

2 Introduction to the BOOST-DRV8711..................................................................................... 3

2.1 Features.............................................................................................................. 3

2.2 Pinout................................................................................................................. 3

3 Getting Started............................................................................................................... 4

3.1 Requirements ....................................................................................................... 4

3.2 Configuring the LaunchPad ....................................................................................... 4

3.3 Connecting the Hardware.......................................................................................... 5

4 Stepper Motor Demo Application .......................................................................................... 6

4.1 Introduction .......................................................................................................... 6

4.2 Setting up the BOOST-DRV8711 Firmware..................................................................... 6

4.3 Setting up the BOOST-DRV8711 GUI........................................................................... 9

4.4 Spinning Your Stepper Motor.................................................................................... 10

5 Hardware Files (Schematic/Gerber) ..................................................................................... 12

List of Figures

1 BOOST-DRV8711 Stand-Alone............................................................................................ 2

2 BOOST-DRV8711 on MSP-EXP430G2 .................................................................................. 2

3 BOOST-DRV8711 Pinout................................................................................................... 3

4 MSP-EXP430G2 Jumper Location ........................................................................................ 4

5 Target Configuration ........................................................................................................ 6

6 Target Configuration Setup................................................................................................. 7

7 Launch Selected Configuration ............................................................................................ 7

8 Connect Target Selection................................................................................................... 8

9 Load Program Selection .................................................................................................... 8

10 Existing CCS Eclipse Projects ............................................................................................. 9

11 BOOST-DRV8711 GUI Screen........................................................................................... 10

12 BOOST-DRV8711 GUI CONTROL Tab................................................................................. 11

13 BOOST-DRV8711 GUI REGISTERS Tab .............................................................................. 12

SLVU967–May 2014 BOOST-DRV8711

BOOST-DRV8711 Views

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1 BOOST-DRV8711 Views

The views in Figure 1 and Figure 2 are of the BOOST-DRV8711 Stepper Motor BoosterPack.

Figure 1. BOOST-DRV8711 Stand-Alone

Figure 2. BOOST-DRV8711 on MSP-EXP430G2

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Introduction to the BOOST-DRV8711

2 Introduction to the BOOST-DRV8711

The BOOST-DRV8711 is a stepper motor BoosterPack based on the DRV8711 Stepper Motor Controller

and CSD88537ND Dual 60-V N-Channel NexFET™ Power MOSFETs. This BoosterPack provides a

complete stepper motor drive stage in order to evaluate your motor applications.

2.1 Features

• Complete stepper motor drive stage in a small form factor (1.75 in × 2.00 in)

• Supports 8.2–52 V and up to 4.5 A continuous for each H-Bridge

• 4x CSD88537ND Dual 60-V N-Channel NexFET Power MOSFETs (12.5 mΩ)

• Motor stall and device fault LED indicators

• Fully protected drive stage including overcurrent, overtemperature, undervoltage, and motor stall detect

• Combine with TI LaunchPad kits to create a complete stepper motor drive and control platform

• Optimized for the MSP-EXP430G2 LaunchPad with a user-friendly application to get your motor

spinning in minutes

2.2 Pinout

The BOOST-DRV8711 brings out a mixture of power, control, and feedback signals to the LaunchPad

headers.

Figure 3. BOOST-DRV8711 Pinout

• Powered by an external power supply (8.2–52 V) that can be connected to the terminal block header

(J6)

• 4-pin terminal block header (J5) for connecting a bipolar stepper motor

• Fault and motor status reporting through the nFAULT and nSTALL signals

• SPI interface to set device configuration, operating parameters, and read out diagnostic information

• Built-in microstepping indexer through a STEP/DIR interface or H-Bridge control through an IN/IN

interface

• Onboard potentiometer for creating your own, easy-to-use, demo application

SLVU967–May 2014 BOOST-DRV8711

Getting Started

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3 Getting Started

3.1 Requirements

The Stepper Motor BoosterPack is not a standalone evaluation board and requires a compatible

LaunchPad kit to provide the appropriate control signals. In addition to the Stepper Motor BoosterPack

and a compatible LaunchPad, a stepper motor and sufficient power supply are required.

3.2 Configuring the LaunchPad

3.2.1 Example Using MSP-EXP430G2

For the MSP-EXP430G2 LaunchPad, remove the P1.0 and P1.6 (LED1 and LED2) jumpers for correct

operation of the POT and SDO signals of the BoosterPack. The TXD and RXD jumpers should be aligned

horizontally (black rectangles in Figure 4) for operation of the hardware UART with a software application.

Figure 4. MSP-EXP430G2 Jumper Location

For other LaunchPads, ensure that the appropriate jumpers are configured on pins that the BOOST-

DRV8711 BoosterPack utilizes.

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Getting Started

3.3 Connecting the Hardware

1. Plug the Stepper Motor BoosterPack onto the LaunchPad as shown in Figure 2.The terminal block

headers should be oriented towards the USB connector.

2. Connect your stepper motor to the terminal block header J5. The motor should have two windings,

each with a + and a – termination. Connect one winding to A1/A2 and the other to B1/B2 (polarity does

not matter). For questions on the motor wire coloring coding, please see the motor’s datasheet.

3. Connect the power supply that will power the Stepper Motor BoosterPack’s DRV8711 and Drive Stage

to the terminal block header J6. The connections have been labeled VM and GND. For full

performance, ensure you can supply as much current as your motor may demand. The Stepper Motor

BoosterPack has a designed operating range from 8.2–52 V up to 4.5 A continuous for each H-Bridge.

WARNING

At high currents the drive stage can increase to high temperatures

4. Enable the power supply

5. Enable your controller and spin the motor. The BOOST-DRV8711 Stepper Motor BoosterPack

combined with a TI LaunchPad provides a complete stepper motor evaluation platform. With the MSP-

EXP430G2 LaunchPad and a MSP430G2553 you can take full advantage of TI's pre-written stepper

motor control application (see Section 4 for additional details).

SLVU967–May 2014 BOOST-DRV8711

Stepper Motor Demo Application

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4 Stepper Motor Demo Application

4.1 Introduction

As mentioned earlier, the BOOSTXL-DRV8301 Motor Drive BoosterPack has been optimized to work

together with the MSP430G2 Launchpad, MSP-EXP430G2, and MSP430G2553 to provide a complete

stepper motor evaluation platform. With the demo application provided, you can have your stepper motor

up and spinning in minutes. Get started with TI's pre-written stepper control application by following

the steps outlined in Section 4.2 through Section 4.4.

4.2 Setting up the BOOST-DRV8711 Firmware

1. Download the latest version of Code Composer Studio to load the BOOST-DRV8711 stepper motor

control application onto the MSP430G2553. The application was developed in CCS v5.5.0.

http://processors.wiki.ti.com/index.php/Download_CCS

2. To obtain the BOOST-DRV8711 firmware and GUI, download the BOOST-DRV8711 Hardware and

Software Files from the tool folder, http://www.ti.com/tool/boost-drv8711. This zip folder contains the

complete hardware design files, including the Altium source files, Gerbers, BOM, schematic, as well as

the Stepper Motor Demo firmware and GUI.

3. Flash the MSP430G2553 on the MSP430G2 LaunchPad with the firmware provided. This will require

the MSP430G2 LaunchPad, a MSP430G2553, Mini USB cable, and can be done in one of two ways

which are outlined in Step 4 and Step 5.

4. Method 1: Loading the binary .out file

• Open Code Composer Studio.

• Select View →Target Configuration (Figure 5, left side of image)

• Right click on the User Defined folder and select New Target Configuration (Figure 5, right side

of image)

Figure 5. Target Configuration

• Give the Target Configuration a name and select Finish

•Figure 6 illustrates how the Target Configuration should be set up. Save the Target Configuration

file.

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Stepper Motor Demo Application

Figure 6. Target Configuration Setup

• Go back to View →Target Configurations

• Right click your newly created Target Configuration file and select Launch Selected

Configuration (Figure 7)

Figure 7. Launch Selected Configuration

• In the Debug Menu, right click on the TI MSP430 USB1_0 connection and select Connect Target

(Figure 8)

SLVU967–May 2014 BOOST-DRV8711

Stepper Motor Demo Application

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Figure 8. Connect Target Selection

• After the device connects, go to Run →Load →Load Program (Figure 9). Browse to the

BOOST-DRV8711 Hardware and Software Files folder that was downloaded from the tool folder.

Go into the Application subdirectory and then go into the GUI subdirectory. Select the

appProgram.out file (Application\BOOST-DRV8711_GUIvX.X\appProgram.out).

Figure 9. Load Program Selection

• After a short delay, the appProgram.out file is loaded onto the MSP430G2553

• Close CCS

5. Method 2: Flashing the project through CCS debugger

• Open Code Composer Studio

• Go to File →Import

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Stepper Motor Demo Application

• Select Existing CCS Eclipse Projects under the Code Composer Studio tab (Figure 10)

Figure 10. Existing CCS Eclipse Projects

• Check the Copy projects into workspace option and then browse to the BOOST-

DRV8711_FIRMWAREvX.X directory located with the Application folder within the BOOST-

DRV8711 Hardware and Software Files folder. The project should now show up in the

Discovered Projects section. Ensure that it is checked and select Finish.

• Select the BOOST-DRV8711_FIRMWAREv1.0 project in the Project Explorer and click the Debug

icon

• CCS will now build the project and load it onto the MSP430G2533

• Close CCS

4.3 Setting up the BOOST-DRV8711 GUI

1. Download the latest version of the GUI Composer Runtime to initially run the BOOST-DRV8711 GUI.

You must register for a TI account if you don’t already have one. Select the appropriate version for

your operating system and follow the install instructions.

http://processors.wiki.ti.com/index.php/Category:GUI_Composer#GUI_Composer_Downloads

2. After installing the GUI Composer Runtime, copy the BOOST-DRV8711_GUIvX.X folder, located in the

Application directory of the BOOST-DRV8711 Hardware and Software Files folder and paste this folder

into the GUI Composer webapps folder located in the C:\ti\guicomposer\webapps\ directory.

(Note: if you chose a non-default installation directory in Step 1, the top-level directory may differ)

3. To run the GUI, double click the BOOST-DRV8711_GUIvX.X.exe file within the BOOST-

DRV8711_GUIvX.X folder of the webapps directory. You can make a shortcut to this .exe in order to

start it from other file locations.

**Ensure that the GUI “exe” is exactly two levels below the GUI Composer “webapps” folder. The GUI will

not start if this is incorrect. The path should look similar to this

C:\ti\guicomposer\webapps\BOOST-DRV8711_GUIvX.X\BOOST-DRV8711_GUIvX.X.exe.

(Note: if you chose a non-default installation directory in Step 1, the top-level directory may differ)

SLVU967–May 2014 BOOST-DRV8711

Stepper Motor Demo Application

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4.4 Spinning Your Stepper Motor

After a successful launch of the BOOST-DRV8711_GUIvX.X.exe,Figure 11 pops up. It may take a small

period of time before the GUI connects and the GUI Widgets populate (red X's appear on the widgets

while the GUI is connecting). If the GUI does not load after a few minutes (the X’s disappear), a

connection issue may have occurred and TI recommends restarting the application.

Figure 11. BOOST-DRV8711 GUI Screen

4.4.1 Quick Start

1. Set Your Full Scale Current level appropriately by adjusting the TORQUE and ISGAIN settings. Your

Full Scale Current level is determined by your stepper motor’s current rating and power supply

capability. Click the Set All button after choosing the appropriate settings.

2. Select your Step Mode. This determines the level of microstepping applied to the motor.

3. Set the nSLEEP pin high to bring the DRV8711 out of sleep mode. The DRV8711 now begins

regulating current.

4. Adjust the Stepper Motion Profile parameters to the desired values. The units are Pulses Per

Second, otherwise known as Steps Per Second.

5. Enable the Speed Profile or Step # Profile button depending on the desired mode.

The BOOST-DRV8711 GUI provides two tabs. The first tab controls the Stepper Motor and the second tab

sets the registers of the DRV8711.

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Stepper Motor Demo Application

4.4.2 CONTROL Tab Walkthrough

Figure 12. BOOST-DRV8711 GUI CONTROL Tab

1. The nSLEEP and RESET buttons directly control the nSLEEP and RESET pins of the DRV8711. Red

indicates LOW (0 V) and green indicates HIGH (3.3 V). nSLEEP = LOW puts the DRV8711 in a low

power sleep mode. RESET = HIGH resets the internal logic and disable the H-bridge outputs.

2. The STEP and DIR buttons give you command of the stepper motor. STEP moves the motor one step,

independent of the Stepper Motion Profile. DIR selects which direction the motor is spinning.

3. The Stepper Motion Profile provides a method to spin the stepper motor in a variety of ways. It gives

you command of the starting/stopping speed, acceleration rate, target speed, and number of steps (if

using the step # profile). The units are pulses per second, or steps per second, as the DRV8711 will

move a step with every rising edge it sees.

4. The Speed Profile button (once selected) accelerates the stepper motor from the starting speed to the

target speed. The motor remains at this speed until the Speed Profile button is selected again. The

Step # Profile (once selected) moves the stepper motor the specified number of steps while attempting

to maintain the speed profile. Due to approximation errors on the MCU, the target speed may not

exactly match the target speed.

5. The nFAULT and nSTALL provide status about the motor and motor driver. The nFAULT reports on a

variety of faults for the DRV8711. A more detailed description of the various faults can be found in the

datasheet. nSTALL is a feature of the DRV8711 to detect a motor stall. This feature must be calibrated

to function properly. Please see the datasheet for additional information.

6. The Current Speed box provides information about the current speed of the speed motor. The Motor

State box indicate the status of the motor, whether it is stopped, accelerating, decelerating, and so

forth. Note that there is a slight time delay in the GUI (~ 1 second).

7. The Step Mode setting determines the microstepping level of the DRV8711. The Decay Mode

determines the decay method of the current regulation scheme. The recommended modes for stepper

motors are All Mixed and Auto Mixed Decay. The decay method is fine tuned in the Registers tab.

8. The TORQUE and ISGAIN settings, in combination with the hardware SENSE resistor, determine the

full scale current of the current regulation scheme. By adjusting these settings you can adjust the full

SLVU967–May 2014 BOOST-DRV8711

Hardware Files (Schematic/Gerber)

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scale current level appropriately for your specific motor. Refer to the datasheet for the exact formula for

full scale current.

9. The Set All button takes the settings in the GUI and writes them to the DRV8711. Click this button to

update the DRV8711 once you have made the desired settings.

4.4.3 REGISTERS Tab Walkthrough

Figure 13. BOOST-DRV8711 GUI REGISTERS Tab

1. The BOOST-DRV8711 GUI provides access to all of the register settings of the DRV8711. Use this

page to fine tune the motor driver settings. The register name as well as its hexadecimal address is

shown. Refer to the DRV8711 datasheet (SLVSC40) for a more detailed description of each setting.

2. The Reset Faults button resets any faults that have occurred while driving your stepper motor. If a fault

occurs while spinning your motor (FAULT LED lights ups), select this button to clear the fault. Selecting

the button only clears the fault if the fault condition has been removed. Please refer to the DRV8711

datasheet for a detailed description of possible fault conditions.

3. The Manual SPI Read/Write section allows you to manually read or write hexadecimal values to the

DRV8711.

4. The Write All button updates the DRV8711 with the values set in the GUI. The Read All button updates

the GUI with the values from the DRV8711.

5 Hardware Files (Schematic/Gerber)

The complete design files are found in the tool folder (http://www.ti.com/tool/boost-drv8711) including the

schematic, Gerbers, layout files, PCB views, and bill of materials.

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follow the instructions above, user will be subject to penalties of Radio Law of Japan.

http://www.tij.co.jp

【無線電波を送信する製品の開発キットをお使いになる際の注意事項】本開発キットは技術基準適合証明を受けておりません。本製品の

ご使用に際しては、電波法遵守のため、以下のいずれかの措置を取っていただく必要がありますのでご注意ください。

1. 電波法施行規則第6条第1項第1号に基づく平成18年3月28日総務省告示第173号で定められた電波暗室等の試験設備でご使用いただく。

2. 実験局の免許を取得後ご使用いただく。

3. 技術基準適合証明を取得後ご使用いただく。。

なお、本製品は、上記の「ご使用にあたっての注意」を譲渡先、移転先に通知しない限り、譲渡、移転できないものとします

上記を遵守頂けない場合は、電波法の罰則が適用される可能性があることをご留意ください。

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