Page 37 - EE Times Europe Magazine | March 2020

EE|Times EUROPE 37

Microstepping for High-Performance Motion Control

For reader inquiries and address changes,
please contact: christiane.lockner@aspencore.com
or call +49 8092-247740
To unsubscribe, please go to:
www.eetimes.eu/unsubscribe/

Aspencore Media GmbH
Rauwagnerstr. 5
85560 Ebersberg / Germany
EDITORIAL MANAGEMENT
Bolaji Ojo, Global Editor-in-Chief,
bolaji.ojo@aspencore.com
Junko Yoshida, Global Co-Editor-in-Chief,
junko.yoshida@aspencore.com
Figure 5: Typical application diagram (Image: Allegro Microsystems) Anne-Françoise Pelé, Editor-in-Chief,
eetimes.eu; afpele@aspencore.com
Brian Santo, Editor-in-Chief, eetimes.com
Echo Zhao, Chief Analyst, echo.zhao@aspencore.com
Judith Cheng, Managing Editor,
Judith.cheng@aspencore.com
CONTRIBUTING EDITORS
George Leopold, gleopold@gmail.com
Ann Thryft, athryft@earthlink.net
STAFF CORRESPONDENTS
Matthew Burgess, matthew.burgess@aspencore.com
Anthea Chuang, anthea.chuang@aspencore.com
Nitin Dahad, nitin.dahad@aspencore.com
Maurizio Di Paolo Emilio,
maurizio.dipaolo@aspencore.com
Yvonne Geng, yvonne.geng@aspencore.com
Amy Guan, amy.guan@aspencore.com
Susan Hong, susan.hong@aspencore.com
Illumi Huang, illumi.huang@aspencore.com
Barbara Jorgensen, barb.jorgensen@aspencore.com
Clover Lee, clover.lee@aspencore.com
Shao Lefeng, lefeng.shao@aspencore.com
Jenny Liao, jenny.liao@aspencore.com
Elaine Lin, elaine.lin@aspencore.com
Luffy Liu, luffy.liu@aspencore.com
Challey Peng, challey.peng@aspencore.com
Gina Roos, gina.roos@aspencore.com
Fendy Wang, fendy.wang@aspencore.com
Sally Ward-Foxton, sally.wardfoxton@aspencore.com
Demi Xia, demi.xia@aspencore.com
Franklin Zhao, franklin.zhao@aspencore.com
Momo Zhong, momo.zhong@aspencore.com
COPY AND DESIGN
Adeline Cannone, Design Director,
Figure 6: Circuit diagram of the L6470H (Image: STMicroelectronics) adeline@cannone.com
Lori O’Toole, Chief Copy Editor, lotoole@aspencore.com
Diana Scheben, Production Chief,
complete with accurate current-sensing connected in parallel to obtain higher output diana.scheben@aspencore.com
circuitry and overcurrent protection. currents, and in the case of the DRV8880, an TECHNICAL AND ADMINISTRATIVE SERVICES
The digital control core of the L6470H internal DAC controls load torque. Tracey Bayer, tracey.bayer@aspencore.com
is programmed through a dedicated set of Stepper motors can be controlled with a SALES & MARKETING
registers. It includes protection circuitry, digital circuit, such as a microcontroller, with Philip Strange, Director of Sales, ASPENCORE EMEA,
delivering a fully protected design as required great ease and precision without requiring philip.strange@aspencore.com
Claudia Mellein, claudia.mellein@aspencore.com
by the most demanding motor control appli- devices that detect angular position. Micro- Christiane Lockner, christiane.lockner@aspencore.com
cations (Figure 6). stepping is used to achieve higher resolution, The Hufmann Agency, victoria@hufmann.info,
norbert@hufmann.info
The DRV8880 and DRV8881 motor drivers higher energy efficiency, and smoother Todd Bria, todd.bria@aspencore.com
with AutoTune technology developed by motion at low speeds. It delivers a more Bolaji Ojo, Group Publisher, ASPENCORE
Texas Instruments eliminate complex and linear operation, eliminating step noise and
tedious manual circuit adjustments, which resonance issues. Copyright© All rights reserved. No part of this publication
may be reproduced or transmitted in any form or by any
often require several weeks of design and However, the use of microstepping can means without the prior express written permission of
optimization, by automatically tuning the reduce torque by up to 30%. Thus, it will be Aspencore Media. Although we make every effort to present
up-to-date, accurate information, EE Times Europe will not
stepper motors for optimal current regulation necessary to evaluate the electrical specifica- be responsible for any errors or omissions or for any results
obtained from the use of such information. The magazine
performance while compensating for motor tions of the motor to select the right driver. ■ will not be li able for any loss caused by the reliance on
variation and aging effects. information obtained on this site. Furthermore, EE Times
Europe does not warrant the accuracy or completeness
Drivers with AutoTune technology are able Maurizio Di Paolo Emilio is a staff of the information, text, graphics in this magazine. The
to configure off-time PWM modulation with correspondent at AspenCore, editor of Power opinions expressed in the articles are those of the authors
and not necessarily the opinions of the publisher.
microstepping above 1/16 step. They can be Electronics News, and editor-in-chief of EEWeb.
www.eetimes.eu | MARCH 2020