DRV8711Evaluation Module - included stepper motor

Hi Nick, thanks for the feedback. According the electrical characteristics, this motor is rated for 3.0 Amp. Is it therefore 1.5 Amp per phase or is the 3 Amp rating per phase? I assume this is a 2 phase stepper motor?

Hi Nick, again thank you very much.

I am planning to use a power supply: 16V, 4.2A.

Based on an equation from a previous entry in this forum:

V_supply * I_supply = 2(phase) * 3V (motor voltage) *3A(per phase).

My supply is therefore more than adequate, but will the circuit be able to handle the 4.2A supplied? I understand that not all of this current will be utilized but is their a general guideline on the max input power (in Watt). I would appreciate your feedback.

Hi Nick, I was able to pick up in the latest TI Motor Driver Guide that this specific board (DRV8711EVM) is rated for 10A at 52V. This then answers my previous query about the maximum allowed power. Based on this we can probably safely deduce that this board can be powered by a 520 Watt supply. I received mine during the week and I can only say that this is incredible. Considering the small footprints of the TI PowerFETs used on this board makes this even more impressive. My next step will be adding bigger and bigger stepper motors to establish when thermal issues need to be taken into account. Considering the small component footprints, a small 12v fan will probably be capable of keeping the thermal issues within limit. Truly impressive technology. Please send my complimentsto the motor development team. And thanks for the great support I got on this forum.

Marius,

Thank you for the compliments, I will be sure to pass them on. We will also be releasing a TI BoosterPack shortly, based on the DRV8711 and CSD88537ND.

http://www.ti.com/tool/boost-drv8711

This BoosterPack can achieve 4.5A DC out of each H-bridge with no external thermal management (ambient was room temp) in an even smaller form factor.

Hello all =)

When are you going to release the BOOST-DRV8711?

Stepper motor included?

Thank you

Hi Danial,

The BoosterPack should release within the week. It will not include a stepper motor, but you can find bipolar stepper motors at a variety of websites. Let me know if you have any questions.

Hi Daniel,

The BOOST-DRV8711 is now released and orderable. Orders should begin shipping by the end of the week. Sorry for the delay.

Nicholas Oborny said:

Hi Daniel,

The BOOST-DRV8711 is now released and orderable. Orders should begin shipping by the end of the week. Sorry for the delay.

Hello Nicholas

Thank you by your reply =)

But it seems it is out of stock already =(

Thx

Daniel.

Hi Daniel,

You should still be able to place an order. There is sometimes a 2-3 delay before our inventory updates after we release a tool. Orders should begin shipping by Friday.