TPS23731: layout comment and suggestion

Tommy Tzeng

Genius 5895 points

over 1 year ago

0 Diang Xing over 1 year ago

TI__Mastermind 37111 points

Hi Tommy,

Thanks for reaching out. Please find the below layout check list which may help. Let me know if you have any further questions.

PoE PD Layout Check LIst.xlsx

Best regards,

Diang

0 Tommy Tzeng over 1 year ago in reply to Diang Xing

Genius 5895 points

Hi Diang,

got it, thanks for you data, but we want to you can help us double confirm this schematic whether any problem and if layout can also check, thanks.

.zip file password：DCs1163y67PR

7484.TI (1).pdf

6000128ZAANH-JOB.zip

0 Diang Xing over 1 year ago in reply to Tommy Tzeng

TI__Mastermind 37111 points

Hi Tommy,

Sure, we can help to check the schematic and layout. Should be able to get back to you by the end of next week.

By the way, the brd. file password is incorrect.

Best regards,

Diang

0 Tommy Tzeng over 1 year ago in reply to Diang Xing

Genius 5895 points

Hi Diang,

the Customer replied correct password is: 2HJjT%nL5, thanks.

0 Diang Xing over 1 year ago in reply to Tommy Tzeng

TI__Mastermind 37111 points

Hi Tommy,

Thanks for your reply. I checked your new password but it is still incorrect...

Could you double check again?

Best regards,

Diang

0 Lai po ming over 1 year ago

Prodigy 20 points

Hi Diang,

Sorry, The BRD file password: 20240821, Try again please.

Best regards,

Aaron lai

0 Diang Xing over 1 year ago in reply to Lai po ming

TI__Mastermind 37111 points

Hi Aaron,

The password works now. Will get back to you by this week. Thanks!

Best regards,

Diang

0 Diang Xing over 1 year ago in reply to Diang Xing

TI__Mastermind 37111 points

Hi Aaron and Tommy,

Thanks for your patience. Please see the comments below:

1. The typical Ethernet PHY does not need thick wire but considering the PoE is for higher current than data, it is recommended to use a thicker wire at Ethernet port.

2. The primary side FET gate loop is important

3. Though in many cases there is no need to mount the snubber circuit at primary side when you have the RCD clamping, but it is recommended to have a 0805 or larger size snubber resistor.