LM5143-Q1: what happens in case of phase loss?

Tibor Szekely

Prodigy 10 points

Part Number: LM5143-Q1

Dear Texas Instruments!

We use 2 LM5143QRWGRQ1 devices as a 4 phase single voltage regulator.

Is a phase loss detectable and reported by PG pin? What happens in case of phase loss?

Thank you in advance!

Best Regards,

Tibor Szekely

over 4 years ago

+1 Timothy Hegarty over 4 years ago

TI__Guru 74032 points

Hi Tibor,

The PG function just looks at the FB voltage (i.e. Vout). It does not monitor phase loss specifically (unless EN goes low to initiate the phase shedding).

Regards,

Tim

0 Tibor Szekely over 4 years ago in reply to Timothy Hegarty

Prodigy 10 points

Thank you very much for your help!

0 Timothy Hegarty over 4 years ago in reply to Tibor Szekely

TI__Guru 74032 points

No problem, thanks for the question.

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LM5143-Q1: what happens in case of phase loss?