LM25180-Q1: Request for schematic design review

Hi Jeffery,

Thank you for posting.  The LM25180 is not able to support their full load.  If 0.2A in both output rails are needed under 8Vin, they should consider the LM25183/4, and change Lmag ~24uH. See below snapshot: I just changed the IC to LM25183, and Lmag to 24uH. This should be a reasonable design. 

Regarding their schematic, the transformer polarity is wrong.

Please correct and update the design, and re-send for review.

Thanks,

Youhao

HI Youhao,

Thanks for your kind response. Let me check it with customer and re-send the updated design for 2nd review.

Regards,

Hi Jeffrey,

Thanks and I am looking forward to their updated schematic.

Regards,

Youhao

Hi Youhao,

Please check the updated schematic and configurations of design tool below.

LM25180-Q1_Schematic_2nd.pdf

Regards,

Hi Youhao,

Thanks for your support. It will help them to design a lot.

Regards,

Hi Jeffery,

You are welcome!  Please feel free to contact me if I can be of further assistance.

Regards,

Youhao

Hi Youhao,

You can close this thread. I will open a new thread if I need the additional technical support.

Regards,