I had not been to their web site in a while and see they added some new
chips. Especially intriguing to me is the combination TMC 401 and a TMC 249.
The TMC 249 has StallGuard. The actual motor control fets are separate
from the driver and their table shows numbers that will work.
With the correct fets, you can go up to 4.5 amps. Best of all,
the packages are all soic size, use near blind people, like me,
can solder them.
One problem is the TMC 401 is new and not yet available. I checked at Farnell
(Europe) and their brother Newark. The TMC 249 is available.
The lucky Europeans get a break They are out of Germany (maybe)
as they have Gmbh in their company name. The cost at Farnell is lower even without the difference in money exchange.
The site is: http://www.trinamic.com.tmc.render.p...me=home_en&h=1
A real mouth full.
It is available from me
The Stallguard is not all that it seems. In most cases it is useless.
Perhaps, the best and quickest way to evaluate Trinamic microchips is to buy their "evaluation board", or a complete motion controller with those TMC249, or smaller TMC246 drivers inside.
A complete controller provides an advantage that after evaluation you may reuse it as a controller.
I provide both the hardware and software for the boards. See my website:
Ohh - Boy ! You have a history with those guys !
Originally Posted by Andrew DLL
My suggestion would be to discuss with them especially since you are so bound to their proprietary solutions.
I am about to give a try to their driver chips with a goal of 4A stepper motor driver.
By the way, did you checked the new TMC262 ? I can't even find it to buy it.
TMC26x is not ideal. Sorry.
Considering the history of abuse by this company I deem it not feasible to rely on their microchips.
TMC26x are better than TMC24x. Still they have some shortcomings. Alas.
Should you decide nevertheless to use Trinamic, or if you are an existing user of their items, I may provide you as a distributor.
Perhaps you could try Allegro with their Step/Dir translator inbuilt.
They also have a 2 axis driver (2 in one).
I am currently searching for a substitute maker of microchips. Maybe I am able to come up with something later.
TMC5031 dual controller driver
Trinamic made a new microchip: TMC5031. It contains 2 sets of controllers, and drivers.
Trinamic has improved the logic, as compared to previous chips, like controllers TMC428, TMC429, and drivers TMC246, TMC26x.
Type of motor: stepper.
Number of phases: 2 bipolar.
Voltage: 16V (can go up to 18V).
In year 2014 they promise to increase it. - Let's hope to 30V, which is the voltage in the mentioned drivers. So, the controller-driver can replace them all (both drivers, and controllers).
It is 2 axes on 1 chip: 2 controllers, and 2 drivers - 4 chips in 1.
1 axis controls, and drives 1 stepper motor, and 2 limit switches. - 2 motors, and 4 switches in total.
Last edited by Andrew DLL; 10-18-2013 at 10:38 PM.
Thank you for sharing with us Andrew.
From description it looks that it 's a product dedicated for pan and tilt web cams where are needed really small motors.
TMC5031 is not dedicated
The word "dedicated" might mislead you to think it has some special circuitry for a very specific task, and not very suitable to other tasks.
No. TMC5031 is a general purpose controller-driver.
It is true, that Trinamic designed the chip with certain applications in mind. In that sense it maybe dedicated, like a book, or some other art would be. But it is not a technical dedication.
The only feature that may be special is the low voltage: 16V, as compared to 30V. This you might associate with small motors. But, as I mentioned, they plan to increase the voltage.
This microchip replaces:
- 2/3 of TMC429 controller (2 axes versus 3 = 2/3);
- 2 entire TMC246 drivers.
TMC5031 costs about 12% more than TMC429, and about 15% more than TMC246. So, it makes about 43% of the price of equivalent single chips, or even less, if your usual design has only 2 axes.
Other savings, resulting from greater integration, are obvious.
You may buy the chips from me.