Part Number: LM5071 Other Parts Discussed in Thread: TPS23753A Hi, we have an existing design using the LM5071 PoE IC and are looking to update the product.
To de-risk the venture we are looking to see if we can use the existing PoE circuit and if there…
Part Number: LM5071 Other Parts Discussed in Thread: TPS23755 , TPS23753A , TPS23753AEVM-004 Hi
I have a FPGA device that is directly powered from the POE 3.3V output. We are currently using the LM5071 chip. When the feedback optoisolator fails or disconnected…
Thank you very much for the fast answer.
So would you be able to design, build and test a PoE design based on our needs/requirements and release it as TI design?
Our requirements:
Vin = 12...56VDC
Vout = 12VDC, 1.0A
Isolated min. 1.5kV
Or…
Other Parts Discussed in Thread: LM5071 Hello,
We have been design POE module by using LM5071. And we would like to design a compact non-isolation 12-V POE module by using LM5071.
Is there any guideline to modify the feedback loop (Q2, R1, R12, R18…
Hi Darwin,
since I don't have control over the adapter or power source I will isolate.
I have couple of more questions
1) In all reference designs of the LM5071 the aux power input is not isolated from the PoE. I'm presuming that these designs rely…
Hi Darwin,
I have an other problem with the LM5071 evaluation board.
When testing the board in negative temperature (-15°C) a jitter appears on the duty-cycle signal before the maximum limit of 80%. The result is an output voltage unstable. When freezing…
Other Parts Discussed in Thread: LM5071 , TPS23754 , TPS23753A , TPS23753 , TPS23753AEVM-001 , TPS23751 , TPS61085 Hello,
is there a reference schematic for an LM5071 design with 5V output? We require a wide Aux input range and would skip the synchronous…
Part Number: LM5071 We are using LM5071 as schematic in attached file.
- We found that the Output 5V dropped to 3.3V when we connect POE after connected adapter 12V.
- But If connect POE before connect adapter, there is no issue.
So, Could you…
Hi,
I apologize that no one has followed up with your question. I'm going to close this thread, but if you still have a question please feel free to post a brand new thread instead of replying to this one. We will do our very best to respond within…
Other Parts Discussed in Thread: TPS23753 , LM5071 We have succesfully used the LM5071MT-50 with 13W transformer (coilcraft POE13P-50L) before. In a new design we only require 3W output, therefore I chose the smaller transformer from Coilcraft: POE30P…
