DRV8320: About the concern, if it use for brushed DC motor.

Kengo.Y

Guru 11245 points

Part Number: DRV8320

Hi team.

I'd like to know about the concern.

I want to use DRV8320 for brushed DC motor.

What concerns are there, if I use it ?

And then, how to processing unused terminal?

I think one phase will not use.

Sincerely.

Kengo.

over 6 years ago

0 Adam Sidelsky over 6 years ago

TI__Guru 65220 points

Kengo,

Please use section 8.3.1.1.4 in the DRV8320 datasheet and also see this post:

e2e.ti.com/.../2817987

Regards,

-Adam

0 Kengo.Y over 6 years ago in reply to Adam Sidelsky

Guru 11245 points

Adam.

Thank you for your reply.
According to section 8.3.1.1.4 in the datasheet, it said become turning on both the High-side and Low-side FET.
Can I refer to section 8.3.1.1.1 to avoid to turning on both FET ?
It mean is can I use 6x PWM Mode for brushed DC motor.
Of course I will disconnect one phase.

If I use 6x PWM mode, What concerns are there ?

Sincerely.
Kengo.

0 Adam Sidelsky over 6 years ago in reply to Kengo.Y

TI__Guru 65220 points

Kengo,

There are no concerns. Obviously this is not the intended use for the device so I would check it carefully.

Regards,

-Adam

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DRV8320: About the concern, if it use for brushed DC motor.