UCC14341-Q1: Power management forum

Brian Wang0928

Part Number: UCC14341-Q1

Tool/software:

Team,

In the layout guidelines here, there're three layers been implemented. For the RF emission, what're the suggestions of the PCB layers in UPS application?

Customer's EMI standard has to follow IEC 62040-2

Here's customer's layout now. Blue color is ground plane, in the TI's layout guidelines, the copper areas of the inner layer is pour over to right side as red color mark.

Larger copper areas act as shielding layers, effectively reducing unwanted RF interference. Is there any safety concern with Clearance? Is this suggested?

Guidelines for clearance to keep isolation:

Regards

Brian

3 days ago

0 Shinu.V.Mathew 1 day ago

TI__Genius 10160 points

Hello,

Please expect a delay in responses due to US holiday.

Thanks.

0 Manuel Alva Hernandez 2 hours ago

TI__Genius 15336 points

Hi Brian,

-In the Layout Guidelines section of the report, the inner layer is the layout for both inner layers. The EMI board is a 4-layer PCB with two inner layer whose layouts are the same.

-Regarding the clearance constrain for the Faraday shield, because it is in an inner layer and not in the top or bottom layer, the clearance requirements is entirely dependent on FR4 material. That is why we recommended 1mm clearance.

Thank you