TPA3138D2: Minimum load

Kuramochi Tadahiko

Guru 28715 points

Part Number: TPA3138D2

Hi,

The minimum load is specified as below;

I would like to know why the minimum load is specified.

I assume that overcurrent occurs if the load is out of the minimum range.

Is my understanding correct?

Best Regards,

Kuramochi

over 5 years ago

0 Yanming Gong over 5 years ago

TI__Mastermind 19850 points

Hi Kuramochi,

I think I have replied you similar question:

https://e2e.ti.com/support/audio/f/6/t/939446

The minimum load is defined for OC limit protection.

Regards,

Derek

0 Kuramochi Tadahiko over 5 years ago in reply to Yanming Gong

Guru 28715 points

Derek-san,

Thank you for your quick reply.

The question is different a little bit.

Does "OC limit protection" means short-circuit protection?

I can not find "OC limit protection" limit in the datasheet.

Best Regards,

Kuramochi

0 Yanming Gong over 5 years ago in reply to Kuramochi Tadahiko

TI__Mastermind 19850 points

Hi Kuramochi,

Yes, OC limit protection" means short-circuit protection, short to power or ground, or load short.

You can refer 9.3.8 part of datasheet.

Regards,

Derek

0 Kuramochi Tadahiko over 5 years ago in reply to Yanming Gong

Guru 28715 points

Derek-san,

I understand.

Is the overcurrent limit value "Maximum output current"?

Best Regards,

Kuramochi

0 Yanming Gong over 5 years ago in reply to Kuramochi Tadahiko

TI__Mastermind 19850 points

Hi Kuramochi-san,

Yes, 3.5A is the OC threshold.

Regards,

Derek

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TPA3138D2: Minimum load