DRV8329: IC selection for DC Brushless Motor Project

Alex Sanderson

Part Number: DRV8329
Other Parts Discussed in Thread: DRV10975, DRV8334, , MCF8329A

Tool/software:

Hello,

I need help finding another product that is similar to the DRV10975 IC that I am using now. I will be a higher voltage threshold 8-48V range if at all possible. As for a no-load current roughly 2-3A should be enough but I need to have external MOSFETs so I cannot have them integrated into the IC already. Is there a ASIC that you can think of that TI sells that would fit these qualifications. I was looking at possible alternatives of DRV8329 and DRV8334 as well. Let me know what you think of either of these choices.

Thanks,

Alex

3 months ago

0 Anthony Lodi 3 months ago

TI__Mastermind 26416 points

Hi Alex,

Thank you for your question! A member of the team will aim to get back to you by the end of the week.

Regards,

Anthony Lodi

0 Joel A. Adejola 3 months ago

TI__Prodigy 335 points

Hello Alex,

Thank you for your question. To help us more precisely suggest a product for the constraints you already have, could you kindly respond to the following:

- What kind of motor algorithm do you plan on implementing? FOC? Trapezoidal? Sinusoidal?

- Do you plan on using an external microcontroller to implement the motor control algorithm?

- Are you considering single-shunt or three-shunt current sensing?

- Could you provide a value for peak motor current?

Cheers,

Joel A. Adejola

0 Alex Sanderson 2 months ago in reply to Joel A. Adejola

Prodigy 30 points

Hi Joel,

The motors that I plan on running will be sinusoidal commutation.

As for Microcontroller I am trying to stay away from using an MCU I am trying to use more control logic.

I was looking at the single shunt current sensing at the moment. Unless there is a safice option for three shunt current sensing.

Under no load max current draw for the biggest motor I am looking at running with be 2.5-3 A. But under full load I can reach anywhere from 20-30A.

Thanks,

Alex

0 Joel A. Adejola 2 months ago in reply to Alex Sanderson

TI__Prodigy 335 points

Hey Alex,

Thank you for the clarifications. We will aim to get back to you next week with a recommendation part based on your requirements.

Cheers,

Joel

0 Alex Sanderson 2 months ago in reply to Joel A. Adejola

Prodigy 30 points

Thanks Joel,

Alex

0 Manu Balakrishnan 2 months ago in reply to Alex Sanderson

TI__Intellectual 1850 points

Hi Alex,

Check the suitability of MCF8329A. This is sensorless FOC control integrated gate driver, with abs max voltage rating of 65V. What is the load type in your application?

https://www.ti.com/product/MCF8329A

Regards,

Manu

0 Alex Sanderson 2 months ago in reply to Manu Balakrishnan

Prodigy 30 points

Hi Manu,

Thank you for this information. I have checked over the MCF8329A and from the data sheet seems as if it could be a proper alternative. As for load type in our application, this will be kind of an across the board build. This drive should be able to support mechanical load as well as air movement load.

Thanks,

Alex Sanderson

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DRV8329: IC selection for DC Brushless Motor Project