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: DRV8830
Would you support my customer's inquiry below because
there was no description on the data sheet.
・ Iout vs MDOUT1 / MDOUT2
* I want to know how much the drop by Rds changes.
* I want to know the behavior of Vcc = 3.5v / 4.0v / 4.5v (because Rds changes with Vcc)
・ When Vout is set to 5V, What is the behavior when Vcc is changed to lower than 5V?
* I want to check the behavior when Vcc < set voltage
* Does it Keep 100% duty for example?
Can you clarify the following questions?
HH -> Can you confirm if you are asking how much Rds drops as what parameter(s) changes?
HH -> The behavior of Rds as Vcc is set to those three values?
HH -> To what minimum Vcc value do you want confirmation?
Hector HernandezMotor 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 Hector Hernandez Luque:
Do you have an update here? Thank you.
I will close this e2e for now. Please, reply to this thread or open a new one with your inputs. Thank you.
I'm sorry to reply late.
Would you refer the answer below?
>Can you clarify the following questions?
>・ Iout vs MDOUT1 / MDOUT2
> * I want to know how much the drop by Rds changes.
>HH -> Can you confirm if you are asking how much Rds drops as what parameter(s) changes?
→ Change parameter is Iout（0A to 1A）when Vcc=3.5V, 4.0V, 4.5V
> * I want to know the behavior of Vcc = 3.5v / 4.0v / 4.5v
>(because Rds changes with Vcc) HH -> The behavior of Rds as Vcc is set to those three values?
>・ When Vout is set to 5V, What is the behavior when Vcc is changed to lower than 5V?
> * I want to check the behavior when Vcc < set voltage HH -> To
>what minimum Vcc value do you want confirmation?
→ when Vcc=4.0V and 4.5V
In reply to K.Shidara:
We are on holidays until next Monday. Please, expect a response early next week.
It will require more time to provide these answers. I expect to have a response for you by end of this week.
We do not have Rds(on) data across current range you have indicated. We have data on datasheet, which is Rds(on) changes across Vcc and three temperature points. Please, see the graph below:
Thank you very much for your answer.
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.