I've arranged the DC2583A (LT4294) and DC2660A as DCDC (LT8646S) boards as shown:
Then I've connected the SW-525 PoE switch + 48V/100W Power Supply and an electronic load for the LT8646S 5V output.
Few months ago I had a session here related to the LT4294IMS#PBF PD issue, that was found to be related to the hot swap N-FET SOA characteristics, that were not good enough.
I have replaced the transistor(to CSD19537Q3) with better characteristics…
Hi Engineer Zone Team
We are currently evaluating the LT4294 PD interface controller.Please refer the attached schematic sheet titled “LT4294_PoE_Aux.pdf”.Note only the essential circuitry is shown for clarity.The intended maximum power required…
Hello! Please explain to me how the resistance in the upper arm is 174k, in the lower arm 52.3 K on the example of the DC2583A debugging Board circuit.
What behavior to expect when connecting lt4294 with the passive POE adaptor(48V)? I'm assuming passive POE is the only power supply, so there will be no negotiation between the POE adaptor and the LT4294. Will the voltage pass through the N-CH FET…
I have two questions for the LT4294 application
1. May I know how long does it usually take for the handshaking from detection to power up between a PSE and PD?
If I connect a adaptor (use the Aux pin function) and a PSE to a LT4294 PD device…
I need the following demo board for IEEE 802.3bt protocols and electrical characteristics pre test report. Can you give us a reference??
LT4295 Demo Board: P/N: DC2584A-A :https://www.analog.com/en/design-center/evaluation-hardware-and-software…
The model for LT4294 can be used. The only difference between the LT4293 and LT4294 is the /T2P pin signaling when connected to an LTPoE++ PSE.
I have a few questions regarding the PoE PD controllers in general although my application intends to use the LT4294.
Question 1. – Where does the PD controller receive power during the detection process.
In the PD controllers…