HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
Product News
Automation & Motion Control

Single-Chip Motor Controller Enables Quieter, Smaller Precision Automation

NO RATINGS
1 saves
View Comments: Oldest First|Newest First|Threaded View
Page 1/2  >  >>
naperlou
User Rank
Blogger
good integration
naperlou   12/10/2012 10:23:56 AM
NO RATINGS
Reducing the motor control function to a single chip is a great way to reduce component count.  These functions are driven by physics and a broad range of motors, thus giving flexibility, but not requiring a fully generalized solution.

Elizabeth M
User Rank
Blogger
Re: good integration
Elizabeth M   12/10/2012 1:24:53 PM
NO RATINGS
Thanks for the perspective, naperlou. It seems that "less is more" is becoming a theme in motion-control systems, as smaller yet more complex devices require more precision and less bulk. Appreciate your comment.

Cabe Atwell
User Rank
Blogger
Re: good integration
Cabe Atwell   12/10/2012 5:36:18 PM
NO RATINGS
I'd like to get my hands on a few for testing. I hope that minimum order of 1,000 is just a suggestion.

I want to build a small but high powered stepper driver, and this looks like a good option.

Is there an easy way to convert step signals from USB to parallel without CAM package restriction?

C

Charles Murray
User Rank
Blogger
Re: good integration
Charles Murray   12/10/2012 6:58:57 PM
NO RATINGS
Elizabeth, any idea what the cost differential would be between this single-chip design and a typical multi-chip design?

TJ McDermott
User Rank
Blogger
Re: good integration
TJ McDermott   12/11/2012 12:07:17 AM
NO RATINGS
Good integration is right.  The controller can be built into the stepper motor, maybe even as a plug-in option.

ttemple
User Rank
Platinum
Re: good integration
ttemple   12/11/2012 8:29:14 AM
NO RATINGS
Animatics (http://www.animatics.com/) has been building the controllers inside the end cap of stepper and servo motors for quite a few years now.  You connect a power source and a communication cable to the moter, and off you go.

tekochip
User Rank
Platinum
Re: good integration
tekochip   12/11/2012 9:26:45 AM
NO RATINGS
Good find ttemple.  Tuning a stepper controller for a particular motor can be real pain, and if you're not a EE, a plug and play solution is the way to go.
 
Just about every silicon vendor has a "motor controller" part, whether it be for BLDC motors or steppers.  What makes the difference is how quickly you can get the part to spin a motor and how much it costs to do it.  As mentioned in the article, the biggest problem is the resources required from the micro to spin the motor.  Another problem, not often addressed, is debugging.  Many of the motor controller parts do not gracefully remove the load when debugging, so that breakpoints and single-stepping can have disastrous results.  This part looks to be a very high-end solution that may not fit into smaller motor applications like those used in the gaming industry, but would really work well in medical and robotics.


BobDJr
User Rank
Gold
Re: good integration
BobDJr   12/11/2012 9:44:51 AM
NO RATINGS
Here's a link to the ST evaluation board for the L6480:

http://www.st.com/internet/evalboard/product/254209.jsp

Consultofactus
User Rank
Iron
Re: good integration
Consultofactus   12/11/2012 9:56:45 AM
NO RATINGS
Only if you can wedge the FETs or IGBTs in as well. This device drives external "6 packs".

jcdammeyer
User Rank
Silver
Not enough in one package
jcdammeyer   12/11/2012 11:23:55 AM
NO RATINGS
A useful part perhaps for some applications but what does it do that a dsPIC c/w embedded CAN port cannot?  External winding drivers are still required.  A processor that does SPI is still required.  And unless one mixes P and N channel FETs the high side needs to be 12V above the gates so external support devices and drive FETs are still needed.

What would be really useful would a be device that can microstep a motor to 1/16, have step/dir inputs and have coil drivers with 3.5A and 80V-100V rating.  There are a few devices out there that do 2.5A and 24V but exceed that voltage at your peril.

John

Page 1/2  >  >>
Partner Zone
Latest Analysis
A bold, gold, open-air coupe may not be the ticket to automotive nirvana for every consumer, but Lexus’ LF-C2 concept car certainly turned heads at the recent Los Angeles Auto Show. What’s more, it may provide a glimpse of the luxury automaker’s future.
Perhaps you didn't know that there are a variety of classes, both live and archived, offered via the Design News Continuing Education Center (CEC) sponsored by Digi-Key? The best part – they are free!
Engineer comic Don McMillan explains the fun engineers have with team-building exercises. Can you relate?
The complexity of diesel engines means optimizing their performance requires a large amount of experimentation. Computational fluid dynamics (CFD) is a very useful and intuitive tool in this, and cold flow analysis using CFD is an ideal approach to study the flow characteristics without going into the details of chemical reactions occurring during the combustion.
The damage to Sony from the cyber attack seems to have been heightened by failure to follow two basic security rules.
More:Blogs|News
Design News Webinar Series
12/11/2014 8:00 a.m. California / 11:00 a.m. New York
12/10/2014 8:00 a.m. California / 11:00 a.m. New York
11/19/2014 11:00 a.m. California / 2:00 p.m. New York
11/6/2014 11:00 a.m. California / 2:00 p.m. New York
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Jan 12 - 16, Programmable Logic - How do they do that?
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  67


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2014 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service