WEBENCH® Tools/TPS54560: TPS54560 IS NOT WORKING WITH 48V SUPPLY

Srinivas Varadhan

Part Number: TPS54560

Tool/software: WEBENCH® Design Tools

Hi,

I made a DC / DC converter using the TPS54560,Designed for 5v and 12v .

It is made with the help of TI Webench designer (Design : 4981885/16 TPS54560DDAR for 12v ) for 5v (Design : 4981885/18 TPS54560QDDARQ1 for 5v).Both designs are on the same board and its four layer

Our requirement is max input voltage is 58v, its designed for 60v. It is working fine till 40v but when i give 48v supply ,We observed that spark near the ic after that its not working.

Please find the attachments.

Do you have any suggestions to give me?

Thank you in advance for your help.12V-buildIt_assy_doc_4981885_16_253568459.zip 5V-buildIt_assy_doc_4981885_18_415094319.zip

over 7 years ago

0 Arief Hernadi over 7 years ago

TI__Mastermind 23845 points

Hi,

I will forward this to the Webench Group

Thanks
-Arief

0 Amod Vaze over 7 years ago

TI__Mastermind 26820 points

Hi Srinivas,

Thanks for using the WEBENCH Designer tool.

Would it be possible to share the exact design(s) you are running into issues with using the "Share Design" -> "Share with Public" URL(s) here as I wanted to run a few checks directly in the tool? We can take a look at the design(s) thereafter in the tool.

Regards,
Amod

0 Srinivas Varadhan over 7 years ago in reply to Amod Vaze

Prodigy 30 points

Hi Amode ,

Thanks For your reply..

I have already attached the design files, Please let me know the issue.I have used all the mention parts in the design.0167.12V-buildIt_assy_doc_4981885_16_253568459.zip

0 Srinivas Varadhan over 7 years ago in reply to Arief Hernadi

Prodigy 30 points

3463.12V-buildIt_assy_doc_4981885_16_253568459.zip 8244.5V-buildIt_assy_doc_4981885_18_415094319.zipPlease find the design files for both voltages 5V and 12V .

0 Amod Vaze over 7 years ago in reply to Srinivas Varadhan

TI__Mastermind 26820 points

Hi Srinivas,

Thanks for sharing the design files. However, I am referring to the actual design URL. Please look at the snapshot below:

0 Arief Hernadi over 7 years ago in reply to Srinivas Varadhan

TI__Mastermind 23845 points

Hi Srinivas,

Do you see any instability happening when you ramp the voltage up to 48V? Do you have any scope capture of the switch node?

Thanks
-Arief

Power management

Power management forum

WEBENCH® Tools/TPS54560: TPS54560 IS NOT WORKING WITH 48V SUPPLY