Texas Instruments DRV8811EVM User Manual
DRV8811EVM
User's Guide
Literature Number: SLVA344A
July 2009 – Revised September 2009
2 SLVA344A – July 2009 – Revised September 2009
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Contents
1 Introduction ......................................................................................................................... 6
1.1 Block Diagram ............................................................................................................. 6
1.2 Power Connectors ........................................................................................................ 6
1.3 Test Stakes ................................................................................................................ 7
1.4 Jumpers .................................................................................................................... 7
1.5 Motor Outputs ............................................................................................................. 7
2 Installing Drivers And Software ............................................................................................. 7
2.1 Installing the FTDI USB Driver .......................................................................................... 7
2.2 Installing the DRV8811 Evaluation Board Windows Application Software ........................................ 8
2.3 Running the Windows Application Software ........................................................................... 8
3 Windows Application ............................................................................................................ 8
3.1 Menu ........................................................................................................................ 9
3.2 DRV8811 GPIO Control Signals ........................................................................................ 9
3.3 Updating DAC Output for Current Control (VREF/DECAY) ........................................................ 10
3.4 Updating DAC Output for Decay Control (DECAY) ................................................................. 10
3.5 Operating the Stepper Motor ........................................................................................... 10
4 Schematic ......................................................................................................................... 12
SLVA344A – July 2009 – Revised September 2009 Table of Contents 3
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List of Figures
1 VREF SELECT Jumper ..................................................................................................... 7
2 DECAY SELECT Jumper ................................................................................................... 7
3 DRV8811_RD_EVM_R1p0.exe Main Screen ............................................................................ 8
4 Acknowledgement Text Box ................................................................................................ 9
5 Signals Frame ................................................................................................................ 9
6 Curent Control Frame ...................................................................................................... 10
7 Current Control Frame ..................................................................................................... 10
8 Step Rate ................................................................................................................... 11
9 Speed Control Frame ...................................................................................................... 11
10 Step Control Frame ........................................................................................................ 12
4 List of Figures SLVA344A – July 2009 – Revised September 2009
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