TPS51200: PG output status under EN is disable

Takashi Onawa

Genius 13200 points

Part Number: TPS51200

Hi Team,

One quick question.

What is the status of the PG output when EN is set to low (device disable condition)?

Regards,

Takashi Onawa

over 4 years ago

+1 Weidong Zhu over 4 years ago

TI__Expert 5965 points

Hi Onawa-san,

If EN is low, PG output will be low (provided VIN is already high to have power to pull PG low).

Regards,

Weidong

0 Takashi Onawa over 4 years ago in reply to Weidong Zhu

TI__Genius 13200 points

Hi Weidong-san,

Thanks for your prompt response on this.

I understood.

Regards,

Takashi Onawa

0 Takashi Onawa over 4 years ago in reply to Weidong Zhu

TI__Genius 13200 points

Hi Weidong-san,

Sorry, My customer wants you to take same capture which shows that behavior on EVM though, Can you check that on your bench and share the capture?

Regards,

Takashi Onawa

+1 Weidong Zhu over 4 years ago in reply to Takashi Onawa

TI__Expert 5965 points

Hi Onawa-san,

When EN goes low, PG will go low as well. Please see the below picture.

However, if VIN also goes low, then TPS51200 won't be able to pull PG low and PG will be floating. If PG is pulled to a different voltage which still stays high, then PG will go high in this kind of condition.

Regards,

Weidong

0 Takashi Onawa over 4 years ago in reply to Weidong Zhu

TI__Genius 13200 points

Hi Zhu-san,

Thanks, It's perfect!

Regards,

Takashi Onawa

Power management

Power management forum

TPS51200: PG output status under EN is disable