Where can I buy a "DRV8432EVM" evaluation board?

Mike,

We don't have them released yet for purchase.  

If you can post an email address, I will contact you with some questions.

Regards,

Ryan

Ryan, I too need an evaluation board. We have designed a product, and layout, and aquired PCB's. But when we went to mount the DRV8432, there were markings that might be Pin 1 on top and bottom of the chip. Ugh! So we made our best guess. We were pretty sure we were right, best we could tell from the data sheets. It of course failed. We need an example! Ready to bring this product to market, only don't know if it is oriented right, or we have layout problems. Would like to see an example working board to know either way. rmd@newmicros.com

Randy,

There is a small circle on the top of the device that indicates pin 1.  It is hard to see in a dim light.  Put a bright light on the chip and angle it slightly to see it up in one corner of the device.  

I have attached a quick picture I took below....it is out of focus, but you can barely make out the small marking that I circled in RED.  

Dear Ryan,

  I have been looking about some stepper motor driver for 6A continuous and TI's DRV8432 seems good for this purpose, but ...

  There is one detail, which is strange for me.  TI promised to release the EVM for this part not later than January 2011 (found inside this forum). The user's guide is from May 2010. Nowadays (October 2011) it is still impossible to by it via TI e-store (in May 2010  you directed one question about availability to private mail). Could you explain - in a few sentences -, what is the reason for this situation? I would like to build our new device around this chip, but because I came from the industrial area, I need to be sure, that this part is not  "active" in this moment only and will be removed/replaced in the near future. And if you do not release the EVM for such a long time, it seems to me, that some problems could/may exists with this part.

  I apologize for such a "direct" question (FUD is not my intention at all), but the situation with the DRV8432 EVM is really strange these days.

  Thank you for your answer,

    Jarda.

Jarda,

The DRV8432 is certainly an ACTIVE part on our website and you should have no concerns on the future availability of the device.  For the EVM, we focused on releasing the DRV8412-C2-Kit which is a complete kit including software and MCU for driving a stepper motor.  The DRV8432 is just the big brother of the DRV8412.  Functionality is exactly the same, but the current ratings are higher on the 8432. 

We had planned to follow-up the release of DRV8412-C2-Kit with the DRV8432, but other priorities have simply gotten in the way that have absolutely nothing to do with the device itself.  

For an interim solution, I can send you a stand-alone EVM that is simply the device that can be hooked up to an external MCU.  Would this work for you?  If so, please post your email address and I will ship you one.  

Dear Ryan,

  Thank you for your answer, which brings peace in my mind, because I have not been sure about situation with DRV 8432. Nowadays I am pretty sure that I or one of my colleagues will be using this chip in the near future, because size constraints of NEMA 34 will require such a component.

  Anyway, if you are able to send me an EVM module it would be welcome, because it would speed-up the first experiments with this part. For this purpose, my private e-mail is hybner@seznam.cz . But just samples of the part would be welcome too.

  Jarda

   P.S.: I already have your DRV8412-C2-Kit and it is a really valuable piece of hardware (at least  for me).

Ryan, I am writting up our press release, and we are building our final prototype (I hope).

Seems to me there is something missing from the data sheet: A function table.

If you will look at your 754410 H-bridge,

http://www.ti.com/lit/ds/symlink/sn754410.pdf

you will see on the front page under the pin diagram, a function table, explaining how the inputs relate to the outputs. It is difficult to say from the DRV8432 if it is designed to brakes or coasts or ??? when the inputs are both hi or low. Or is it there, and I missed that?

Randy,

The DRV8432 output vs. input is pretty straight forward.  If the input transitions high, the output on that half-bridge will follow.  PWM_A = HIGH than OUT_A will also go HIGH.  Same case for LOW.  If you need to HIZ the outputs for a coast condition (for example), then you will need to take RESET_AB = LOW.  This will HIZ both OUTA and OUTB.  There is no way to independently resest the half-bridges.  For this, you will need to look at DRV8312/8332.  

Any chance I can get that "interim solution" ?  We need 3 of them to validate our design and they are still not available for purchase.

 My e-mail is mike@robolabsinc.com 

Please let me know.

Best Regards,

Mike

Mike,

Will reply offline.

Hi Ryan,

I have been looking for a way to purchase the evaluation board DRV8432EVM is that on-sale now?

Would you please let me know how to purchase one of them?

Thank you very much.

Michele

Hi,

Any news on the EVM of the DRV8432?

If not possible to order EVM within reasonable time, it would be nice if you could post the gerbers of the EVM described in SLOU291 document. In my case (this time) it would fit me better to just have the DRV8432 where I can connect myself to it.

/Regards, Peter

Peter,

Still working on a release, but it is weeks away now.  Not sure what a "reasonable" time for you is and can't promise anything yet.  If easier for you, all the files are posted in a previous post.

http://e2e.ti.com/support/applications/motor_drivers/f/38/p/172538/630505.aspx#630505

Hi,

Thanks for your response and pointing out where the gerbers could be found. I might go ahead and do some PCBs of the 8432EVM, since date when the EVM can be ordered is not "written in stone" ;)

/Cheers