• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 62 subscribers
  • Views 187 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TPS2372-4EVM-006: TPS2372-4 to be configure for IEEE802.3at.

Rosario Mendez
Prodigy 10 points
Part Number: TPS2372-4EVM-006
Other Parts Discussed in Thread: TPS2373

Hi ti support team,

My name is Rosario Mendez from MHT Lighting and we use this chip on our 90W Node product line working the PoE standard IEEE802.bt.

We also have another 60W node that work per IEEE802.at.

I am wondering if this chip can be also configure for IEEE802.at to deliver 60W. 

I saw this statement on its datasheet, but I couldn't find a way to achieve this configuration.

Could you please provide me with this information?

Thanks, 

Rosario Mendez
Director of Hardware Engineering and Manufacturing

 

E: rmendez@mhtlighting.com

T: 862-241-6657

P: 718-524-4370

W: www.mhtlighting.com

  • 0
    TI__Genius 14295 points

    Hi Rosario,

    IEEE802.3at standard sets the power limit to 30W at PSE and 25W at PD, therefore this chip configured for IEEE802.3at will not suffice your power needs. 

    This device is compliant with IEEE802.3bt standard which allows for up to 71W at PD side (Class 8). 

    Class

    IEEE Standard

    Type

    # Pairs

    Power Sourced at PSE

    Minimum Power at PD

    0

    IEEE802.3af

    1

    2

    15.4W

    13.0W

    1

    IEEE802.3af or

    IEEE802.3bt

    1 or 3

    2 or 4

    4W

    3.84W

    2

    IEEE802.3af or

    IEEE802.3bt

    1 or 3

    2 or 4

    7W

    6.49W

    3

    IEEE802.3af or

    IEEE802.3bt

    1 or 3

    2 or 4

    15.4W

    13.0W

    4

    IEEE802.3at or 

    IEEE802.3bt 

    2 or 3

    2 or 4

    30W

    25.5W

    5

    IEEE802.3bt 

    3

    4

    45W

    40.0W

    6

    IEEE802.3bt 

    3

    4

    60W

    51.0W

    7

    IEEE802.3bt 

    4

    4

    75W

    62.0W

    8

    IEEE802.3bt 

    4

    4

    90W

    71.3W

    Please refer to this chart for clarification between which standard can support which power levels.TPS2373 can support IEEE802.3at standard for power level of 30W at PSE and 25W at PD. This device can also support IEEE802.3bt standard up to 71W at PD. However 60W with IEEE802.3at is not achievable due to compliance. 

    Very respectfully,

    Brandon Beader