TPS56C215: Recommended operating conditions :VIN

Shinya Sawamoto

Part Number: TPS56C215

Hello team,

My client asked me about recommended operating conditions change on the datasheet.
He said that the minimum input voltage looks to be changed from 4.5V to 3.8V.
I found that the datasheet has revised recently in March 2018, but I can't find this change in the revision history.
I know this change is kind of a spec relax and no significant concern for users, but I'd like to know the background why and how the spec was updated.

Thanks in advance.
Shinya Sawamoto
TI Japan East area FAE

over 5 years ago

0 Jason Wang (BSR-MV) over 5 years ago

TI__Genius 9550 points

hi,
I am looking into this question, and give you feedback on Monday.

0 Vincent Zhang(BSR) over 5 years ago

TI__Expert 4795 points

Hi,

TPS56C215 could support 3.8V input if there is external 5V bias, If no external 5V bias, Vin_min keeps 4.5V. We add it to cover more applications.

Vincent Zhang

0 Shinya Sawamoto over 5 years ago in reply to Vincent Zhang(BSR)

TI__Expert 5260 points

Thanks Vincent,
I understood it. I hope it is described on the datasheet to avoid miss understanding.

Regards,
Shinya Sawamoto

0 Vincent Zhang(BSR) over 5 years ago in reply to Shinya Sawamoto

TI__Expert 4795 points

Hi Shinya,

Actually we describe this features in two places. In Page 1 features, '4.5V start up without external 5V bias'; In page 7 EC table, add VIN UVLO with external 4.7V bias.

Vincent Zhang

Power management

Power management forum

TPS56C215: Recommended operating conditions :VIN