DRV8313: Difference between H-bridge and half bridge in a sine wave controller

wessel kooiman

Part Number: DRV8313

Hi Team,

I am looking to control a BLDC motor using a sine wave controller and need a driver for this application.
Now I have come across various things about an H-bridge and a half bridge driver which were not entirely clear to me.
When using a trapezoidal waveform, there is obviously 0V, floating and Vcc needed but with the sine wave this is only a PWM signal with just high/low signals.
So, does it still have advantages to use an H-bridge with a sine wave controller, or does this make less of a difference?

Thanks, Wessel

5 months ago

0 Joshua Maize 5 months ago

TI__Genius 9101 points

Hi Wessel,

Thank you for using our forum!

Please allow me to look into this question further to provide an accurate suggestion/response by next week.

Best Regards,

-Joshua

0 wessel kooiman 5 months ago in reply to Joshua Maize

Prodigy 30 points

oke i wil wait until then

0 Joshua Maize 5 months ago in reply to wessel kooiman

TI__Genius 9101 points

Thank you for your patience,

I look forward to providing a response soon this week.

Best Regards,

-Joshua

0 wessel kooiman 5 months ago in reply to Joshua Maize

Prodigy 30 points

then can i expect te response?

0 Joshua Maize 5 months ago in reply to wessel kooiman

TI__Genius 9101 points

Hi Wessel,

Please expect the response by the end of this week.

Best Regards,

-Joshua

0 wessel kooiman 5 months ago

Prodigy 30 points

I would like to know something, is has almost been two weeks.
Can you please help me

0 Joshua Maize 5 months ago in reply to wessel kooiman

TI__Genius 9101 points

Hi Wessel,

I apologize for the delay as there were some external factors, I will respond this weekend.

Once again, thank you for your patience and I apologize again.

Best Regards,

-Joshua

0 wessel kooiman 5 months ago in reply to Joshua Maize

Prodigy 30 points

Hi joshua,

Can you please tell me when you are going to awnser te question?

0 Joshua Maize 4 months ago in reply to wessel kooiman

TI__Genius 9101 points

Hi Wessel,

I apologize again for the long delay.

For this question regarding a sine wave controller, I'd like to ask if you are referring to integrated control/commutation BLDC drivers? (MCx BLDC Drivers compared to Non-integrated control drivers (DRV) where a separate PWM controller source is required)

Our BLDC drivers are driving 3 half-bridges (3 motor phases each with a high-side and low-side MOSFET pair) with PWM regardless of commutation methodology, so I would like to point to this video here that details the major benefits, differences, and general operation of a BLDC motor/motor driver using sinusoidal and trapezoidal commutation methods, which I believe may answer your questions for your specific application.

Please let me know if you have any additional clarifying questions that I can help provide an answer.

Once again, thank you for your patience, and Best Regards,

-Joshua

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DRV8313: Difference between H-bridge and half bridge in a sine wave controller