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TMC262-EVAL MANUAL (V. 0.16 / 2010-Aug-13) 1

TRINAMIC

Motion Control GmbH & Co. KG

Sternstraße 67

D  20357 Hamburg

GERMANY

www.trinamic.com

1 Features

The TMC262 evaluation board features a TMC262 with external power MOSFETs plus a

microcontroller, which allows interfacing to a PC for visualization and control of all parameters. The

motor can be operated via the step and direction interface both, using an external source, and using

the integrated microcontroller as a step generator.

Highlights

Evaluate all features of the TMC262

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Control all parameters from a PC

Motor current can be set to up to 1A, 2A or up to 4A (soldering jumper) via on-board sense

resistors

Supply voltage up to 40V (MOSFETs can be exchanged against 60V 2A types)

Access all pins of the TMC262

Motor type

2 phase Stepper

TMC262–EVAL manual

Evaluation board for TMC262 driver IC with

coolStep

Summary of content (12 pages)

PAGE 1
TMC262-EVAL MANUAL (V. 0.16 / 2010-Aug-13) 1 TMC262–EVAL manual Evaluation board for TMC262 driver IC with coolStep ® TRINAMIC Motion Control GmbH & Co. KG Sternstraße 67 D – 20357 Hamburg GERMANY www.trinamic.com 1 Features The TMC262 evaluation board features a TMC262 with external power MOSFETs plus a microcontroller, which allows interfacing to a PC for visualization and control of all parameters.
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TMC262-EVAL MANUAL (V. 0.16 / 2010-Aug-13) 2 2 Table of contents 1 FEATURES .......................................................................................................................................... 1 2 TABLE OF CONTENTS ........................................................................................................................ 2 3 GENERAL DESCRIPTION .................................................................................................................... 3 3.
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TMC262-EVAL MANUAL (V. 0.16 / 2010-Aug-13) 3 3 General Description 3V3 Microcontroller STEP (TRISTATE) DIR (TRISTATE) CSN SCK SDO SDI RS232 USB I/O voltage jumper VHS 220n VS +VCC 5V VCC_IO 3V3 5VOUT TMC262 STEP +VM Motor connector +VCC GND +VM Supply DIR GND STEP STEP/DIR input TMC262-EVAL 470n DIR CSN SCK SDI SDO HS A1 2 phase stepper A2 N S BM B1 ENABLE CLK OUT ENABLE LS GND RS CLK source jumper SG_TST +VCC Soldering Jumper 0R15 0R15 3V3 +VM 1K 3.
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TMC262-EVAL MANUAL (V. 0.16 / 2010-Aug-13) 3.2 4 Sense resistors and current setting There are two pairs of sense resistors on the board (R18 and R40, R23 and R41). As a default, a 150mΩ 2510 type resistor is used (330mΩ on earlier versions of the board). A second resistor can be switched in parallel to double the motor current. For different current ranges, the sense resistors can be exchanged (see table). The sense resistors should be chosen in a way, that they fit the maximum required motor current.
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TMC262-EVAL MANUAL (V. 0.16 / 2010-Aug-13) 5 4 Board Pinning figure 2: component placement on the board 4.1 4.1.1 Connectors Power supply connector K1 Pin Number Level Description GND 1 GND Digital and analog low power GND VS 2 9V-40V Supply voltage. Provide sufficient current capability for driving the motor. 4.1.
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TMC262-EVAL MANUAL (V. 0.16 / 2010-Aug-13) 4.1.3 6 Step and direction input K2 Pin Number Level Description DIR 1 VIO Direction input of TMC262. Direction output of microcontroller when enabled via software (step/dir  RUN) GND 2 GND Ground reference STEP 3 VIO Direction input of TMC262. Step output of microcontroller when enabled via software (step/dir  RUN) 4.1.4 JTAG programmer K15 Pin Number Level Description NRST 15 3.3V CPU reset pin.
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TMC262-EVAL MANUAL (V. 0.16 / 2010-Aug-13) 4.2.4 Gate jumpers LA1, HA1 J22, J18, etc Connects the TMC262 gate driver outputs to the MOSFETs Setting Function Description 1-2 normal MOSFET gate controlled by TMC262 operation 2-3 external load 4.2.5 Gate driver signal available at test load output (C24, C20, etc.
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TMC262-EVAL MANUAL (V. 0.16 / 2010-Aug-13) 8 5 Electrical Characteristics 5.1 Operational Range Parameter Symbol Ambient temperature TA -25 85 °C Supply voltage (with the original 40V MOSFETs soldered on the board) VVS 9 40 V Supply voltage (with 60V MOSFETs SI4559ADY) VVS 9 60 V Step and Direction input voltage high level (Attention: The maximum high level depends on the VIO jumper setting) VVIO 2.40 VIO+0.7 V Copyright © 2010 TRINAMIC Motion Control GmbH & Co.
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TMC262-EVAL MANUAL (V. 0.16 / 2010-Aug-13) 6 9 Getting started Connect a stepper motor to the board, connect the PC via RS232 or USB and use a laboratory power supply to power the board with for example 24V. Now, copy the software to your PC and install USB driver, if necessary. 6.1 Notes on engineering sample ICs Please read the note on the engineering sample ICs – a few functions are not yet available or slightly different. 6.2 First steps Start the evaluation kit software. 6.2.
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TMC262-EVAL MANUAL (V. 0.16 / 2010-Aug-13) 10 figure 4: Evaluation software: Starting the motor 6.2.4 Clock frequency setting You can modify the TMC262 clock frequency delivered from the CPU to the TMC262. As also the SPI and Step signal input synchronization are affected by this setting, we advise working with 16MHz or with the internal clock frequency (Jumper setting for internal or external CLK should be done before board power up). Default is 16MHz. 6.2.
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TMC262-EVAL MANUAL (V. 0.16 / 2010-Aug-13) 11 6.2.6 Optimizing the chopper settings In principle, you can run the motor with default settings, but you might want to try improving or modifying the chopper setting for smoothest performance of the motor and for low chopper noise. Start the motor at the desired velocity, e.g. a medium velocity to tune const toff mode fast decay time, or a low velocity to tune chopper hysteresis setting or sine wave offset in const toff mode. Go to the tab CHOPCONF.
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TMC262-EVAL MANUAL (V. 0.16 / 2010-Aug-13) 12 7 Revision History 7.1 Documentation Revision Version Author Description BD=Bernhard Dwersteg 0.10 BD Initial version of documentation 0.12 BD Added notes on first hand labeled TMC262 prototypes 0.13 BD Comments on power supply components 0.14 BD New sense resistor value 150mΩ, new photo, more details in getting started 0.15 BD New software with export function, some hints 0.