DRV8844: About the operation when the protection.

Kengo.Y

Guru 11255 points

Part Number: DRV8844

Hi team.

I'd like to know about the operation when the protection.

If OCP or Short Circuit Protection occurs, does the device stop all systems?

Or does it stop only the channel where protection occurred?

Sincerely.

Kengo.

over 6 years ago

0 Rick Duncan over 6 years ago

TI__Guru** 114905 points

Hi Kengo-san,

Only the channel where the OCP occurred is disabled.

0 Kengo.Y over 6 years ago in reply to Rick Duncan

Guru 11255 points

Hi Rick-san.

Thank you.

How about Short Circuit Protection.

Is this system down?

Sincerely.

Kengo.

0 Rick Duncan over 6 years ago in reply to Kengo.Y

TI__Guru** 114905 points

Hi Kengo-san,

OCP and Short circuit protection are the same function.

From section 7.3.5.1 of the datasheet:

"Overcurrent conditions on both high and low side devices; i.e., a short to ground, supply, or across the motor winding will all result in an overcurrent shutdown."

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DRV8844: About the operation when the protection.