TPS55288: OCP question

Jeff YANG

Part Number: TPS55288

Hi,

If TPS55288 in trigger OCP, if over current situation not change, use MCU read STATUS register to reset OCP bit.

In this moment, what is the INT behavior? It will force to high, and asset to low again? Or it may keep low because OCP still exist?

Thanks!

Jeff

10 months ago

0 Bryce Xun 10 months ago

TI__Genius 16490 points

Hi Jeff,

As datasheet mentioned, when OCP bit is set, INT pin will output low logic.

Regards,

Bryce

0 Jeff YANG 10 months ago in reply to Bryce Xun

Genius 4560 points

Hi Bryce,

Sorry to let you confuse, I mean if OCP behavior keep exist, INT pin will always keep low even I read STATUS register reset OCP bit, right?

Thanks!

0 Bryce Xun 10 months ago in reply to Jeff YANG

TI__Genius 16490 points

Hi Jeff,

Understood, I will do bench test next Monday and come back to you.

Regards,

Bryce

0 Bryce Xun 10 months ago in reply to Bryce Xun

TI__Genius 16490 points

Hi Jeff,

From test waveform, INT would raise to high level after register was read and and fails to low again if OCP behavior keep exist.

Regards,

Bryce

0 Jeff YANG 10 months ago in reply to Bryce Xun

Genius 4560 points

Hi Bryce,

Got it. very appreciate for your help.

0 Jeff YANG 10 months ago in reply to Jeff YANG

Genius 4560 points

Hi Bruce,

Sorry, let me clarify, "fails to low" is mean "NOT going to low" or "Going to low"?

Thanks!

Jeff

+1 Bryce Xun 10 months ago in reply to Jeff YANG

TI__Genius 16490 points

Hi Jeff,

Sorry to bring the misunderstanding, "going to low" again.

0 Jeff YANG 10 months ago in reply to Bryce Xun

Genius 4560 points

Hi Bryce,

Got it, thank you!

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TPS55288: OCP question