LM3481: Layout guidelines for the SEPIC converter using LM3481

Ujwal Vijaykumar

Prodigy 140 points

Part Number: LM3481

Hello,
Can you please share the layout guidelines for the SEPIC converter using LM3481

over 6 years ago

0 Youhao Xi over 6 years ago

TI__Guru* 76815 points

HI Ujwal,

Thank you for considering the LM3481 for your SEPIC design. The layout should follow the regular SEPIC converter PCB design. Please watch the following video:

https://training.ti.com/power-tips-layout-sepic-power-stage

Or the article:

https://www.eetimes.com/author.asp?section_id=36&doc_id=1329265#

addressing the layout tips.

Thanks,

Youhao Xi, Applications Engineering

0 Ujwal Vijaykumar over 6 years ago in reply to Youhao Xi

Prodigy 140 points

Thanks for the support Youhao Xi.
We're using the LM3481 as a SEPIC having a non-coupled topology. Could you kindly share layout guidelines specific to the non-coupled inductor topology.

Thanks

0 Garrett Roecker over 6 years ago in reply to Ujwal Vijaykumar

TI__Mastermind 21720 points

Hi Ujwal,

The layout stratigies mentioned above can be applied to a SEPIC with two discrete inductors. The basic concepts are still the same in regards to keeping the high di/dt current loops small. There is more flexibility to do this as the inductors are discrete.

Thanks,

Garrett

Power management

Power management forum

LM3481: Layout guidelines for the SEPIC converter using LM3481

https://training.ti.com/power-tips-layout-sepic-power-stage