Hi Shaun,
That's correct adding the diode between VDD and VDD1 will help block the adapter voltage from the PoE circuitry such that the PSE can performance detection and classification successfully. A typical diode used is B1100 like in the TPS23754…
Tanikoshi-san,
Unfortunately we currently do not have a solution using the TPS23753A in a 24V application as 24V is not a common output voltage for PoE. However, I recommend looking at the below E2E link that describes using the TPS23754 in a 24V solution…
Other Parts Discussed in Thread: TPS23754 , TPS23754EVM-383 , TPS23754EVM-420 Hello,
We are using the TPS23754EVM for evaluating a 24V over PoE application. The input UVLO is 30V, and I read in the datasheet that the TPS23754 has the PPD pin that allows…
Other Parts Discussed in Thread: LM5071 , TPS23754 , TPS23753A , TPS23753 Can you provide guidance by way of an app note, reference design, design tool or other on selecting a suitable flyback transformer to be used with the LM5071 in a POE PD design…
Amina,
A "PD-only" controller is less integrated than a "PD controller plus DC/DC converter."
The PD-only controller (example: TPS2378) provides the system with a way to complete core PoE functions (detection and classification of a load) through…
Hi Eric,
Thanks for your kind help ! Customer has already accepted it as their fist slution.
Customer also has a requirement of >50w PD. I see TPS2378 and TPS2379 can both achieve that, could your please help explain how TPS2379 achieve the high…
Hello Gim.
There are several PoE PD devices in the TI portfolio which support up to 25.5W (Class 4) power. These include the TPS23785B, TPS23751, TPS23752, TPS23754, TPS23756, and TPS2378. They can extend their reach up to 30W with an optional boost…
Hi Darwin,
We bought three different reference EVM boards from TI( i.e. "TPS23751EVM-104"(VOUT -> 5V @ 5A),"TPS23752EVM-145"(VOUT -> 5V@4.5A) and "TPS23754EVM-383" (12V@2.5A) to test it with our internal reference design applications that should be…
Part Number: TPS23756 Other Parts Discussed in Thread: TPS23754EVM-383 Dear TI Experts,
Attached is my customer's first version of TPS23756 design, could you kindly help to review and give some advices?
Besides, there are other concerns from customer…
Other Parts Discussed in Thread: TPS23754 We are having serious issues with DP83848CVV chip failures on a product we have designed and are starting to roll out into the field.
The most common issue: units are deployed and initially work. After some…
