TPS23753AEVM-001: connect TPS23753AEVM-001 to GS305P, but it doesn't work.

user4522440

Part Number: TPS23753AEVM-001

Hi.

I connect TPS23753AEVM-001 to NETGEAR GS305P-100JPS, but it doesn't work.

The PoE startup sequence is working fine, but it resets after 360msec.

The waveform vdd-vss is attached.

Please teach reason and solution.

0 Michael Pahl over 3 years ago

Hello,

Please try adding at least 1W of load to the output of the DCDC converter.
Thanks!

If this post answers your question, please indicate so by marking this thread as resolved. Thank you.

Regards,

Michael P.

Applications Engineer

Texas Instruments

0 user4522440 over 3 years ago in reply to Michael Pahl

Thank you for your support.

I connect 20ohm, it worked correctly.

The reference is cannot used small loads?

0 user4522440 over 3 years ago in reply to user4522440

I understand the problem is MPS DC current 10mA @ 48V.
It is necessary to connect the corresponding load (including PD circuit).
Thank you.

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