This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
Part Number: DRV8834
I am going to use Motor Driver IC DRV8834 for my new Product.
This product is used in Automotive Environment.
So My Question is: Can I use DRV8834 in Automotive Application?
If No, then please suggest the equivalent Part for DRV8834.
The DRV8834 is not an automotive tailored device but you could still use it in certain automotive applications. You just have to make sure to regulate the current and configure the device such that it complies with automotive regulations.
TI has automotive specific devices. If you can tell me a little bit about your application, I can suggest other devices.
-Are you driving a Stepper or Brush DC motor?
-What is the input voltage range?
-What is the expected output current?
Regards,Pablo ArmetMotor Applications Team
We are glad that we were able to resolve this issue, and will now proceed to close this thread.
If you have further questions related to this thread, you may click "Ask a related question" below. The newly created question will be automatically linked to this question.
In reply to Pablo Armet:
Thanks for your valuable Information,
Below is the requirement for the Stepper Motor Driver,
1) Motor Type : Stepper
2) Motor Voltage : +5V
3) Motor Resistance : 5 Ohms
4) Motor Current :- 1A
5) Motor RMS Current:- 1.41A
6) Function need from Driver :- Stall detection
I have check IC DRV8889-Q1, but I am confused for the statement mentioned in datasheet " High current capacity per bridge – 2.5-A peak, 1.5-A full-scale, 1.1-A rms."
I thought that : If 1.5 A is the full current then RMS current (1.5*1.41=2.1 A)should be 1.41 times than full current.
So I am confusing that can I use this IC OR not?
Also this IC's samples are not available on TI and it is also not available to be purchase.
Kindly check and share your thought.
In reply to alpesh borad:
The RMS current shown in the DRV8889-Q1 is correct. The calculation should be 1.5/1.41=1.06A rms.
Given your requirements, you can use the DRV8889-Q1 IC. If you check on the ti.com website, there are some preproduction samples available on the TI inventory.
Thank you for the Information.
I am going to use Stepper Motor as per below Image.
Confusion : - Stepper Motor is operating on 5V and 5 Ohms resistance but the current says 1.41A instead of 1A.
Can you help to solve my confusion? Also Guide me that the DRV8889-Q1 is useful for this Motor or not?
Thanks in advance.
The 1.41A is the rated current per Phase when only 1 phase is ON and the other phase is OFF. 1.41^2*5=10W so the input power calculations match up. If both phases are ON, then the rated current would be 1A since 1*5*2=10W.
The DRV8889-Q1 has a rated full scale current of 1.5A which meets the 1.41A motor specification. It also has an operating voltage range of 4.5V to 45V which will meet the operating voltage rating of 5V for this motor. The DRV8889-Q1 also has stall detection capabilities which is a function that you need for your application.
You can take a look at the DRV8889-Q1 EVMs here to evaluate the driver with your motor.
Thank you very much for your reply and this clears my confusions for the current calculations.
Now I will take the decision to use the DRV8889-Q1 for the Automotive application.
Really thank you very much for your support.
All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.
TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs andembedded processors, along with software, tools and the industry’s largest sales/support staff.