TPS23751: PMP21655 ethernet transformer

Manu Abraham

Genius 3510 points

Part Number: TPS23751
Other Parts Discussed in Thread: TPS23754, PMP22301

Hi,

Greetings!

@David Strasser (8387)

Previously, we had this discussion based on the TPS23751 and PMP21655.

The TPS23754 based PMP22301 has a different Ethernet transformer. Both the designs are identical in terms of power.

Is it possible to use the ethernet transformer (7490220121) used in the PMP22301, to be used instead of the one used with PMP21655 (749022016) ?

(Not in terms of a drop in replacement in terms of the footprint)

Thanks,

Manu

over 4 years ago

0 David Strasser over 4 years ago

TI__Intellectual 2530 points

Hi, Manu,

Yes, the 121 xfmr can be used in place of the 016 transformer.

When PMP21655 was designed the 016 PoE transformer was one of the few 1G high power transformers available. Wurth has since replaced it with a series of 5 transformers depending on the current level required. They are the 115/120/121/122/123 with currents of 800mA/350mA/600mA/1000mA/1500mA.

Thanks,

David

0 Manu Abraham over 4 years ago in reply to David Strasser

Genius 3510 points

Hi David,

Thanks for the confirmation and the details.

The explanation makes a much better understanding

Much appreciated.

Thanks Again,

Manu

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TPS23751: PMP21655 ethernet transformer