I225 Power Supply

[mmg]

Hi,

I have some questions regarding the intel I225-IT Ethernet Controller's power supply:

• In the datasheet, it says w.r.t. +3.3V_PAD Pad-Voltage Domain Supply:
  Note: Short cutting this voltage domain with others of same nominal value is not allowed
  on the I225/I226. For optimal power-consumption figure of merits, the lowest
  possible voltage must be selected in the system.
  But in the reference schematic, the +3.3V_PAD pin is indeed connected with the other +3.3V pins. So is it ok to connect +3.3V_PAD to the other 3.3V pins as in reference the schematic?
• How large is the maximum current draw of the I225-IT?
  I.e. what is the current, that the +3.3V_LAN supply must be able to deliver?
  The datasheet lists the maximum power at ~2W, but I suppose this is an average value, is it According to the PCIe spec, the PCIe 3.3V rail supplies up to 3A. Would this be sufficient to supply 4 I225's (i.e. a quad port NIC) ?

Thanks in advance for your help.

Regards,
Marcel

[CarlosAM_INTEL]

Hello, @mmg:

Thank you for contacting Intel Embedded Community.

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@CarlosAM_INTEL.

[RKrug]

Hi @CarlosAM_INTEL ,

can you send me also the information about the current etc., please?

Thank you!

BR,

Roland

[CarlosAM_INTEL]

Hello, @RKrug:

Thank you for contacting Intel Embedded Community.

We sent an email to the address associated with this account with information that may help you.

Best regards,

@CarlosAM_INTEL.

[CarlosAM_INTEL]

Hello, @RKrug:

Thanks for your reply via email.

We sent another email to the address associated with this account with information that may help you.

Best regards,

@CarlosAM_INTEL.