Part Number: LM5070 Other Parts Discussed in Thread: TPS23753A Hi,
I have a question regarding LM5070 for this requirements
POE requirements V out: 12V, 1A. Where to look for POE transformers for this controller and what characteristics to check?…
Part Number: LM5070 Other Parts Discussed in Thread: TPS23758 , TPS23753A , TPS2378 Hi, I followed the datasheet recommendation for 3.3V output, but I can't get the signal. I had swapped the primary and bias, but now they are correct and I still don't…
Part Number: LM5070 Other Parts Discussed in Thread: TPS23753A Hi
I'm using this IC LM5070 with transformer C1586-AL ( isolated transformer out 12v. But I get only about 8V out. TI doesn't have reference design for 12V out put. So I used the application…
Part Number: LM5070 Other Parts Discussed in Thread: TPS23758 , TPS23753A I am working on a custom implementation of POE on a IOT device. I received the boards for this unit, however the POE appears to not power on when it is plugged in. Because this…
Hi Meilyr,
Nothing caught my eye regarding the schematic as it is a copy of the past LM5070 EVM. It may be something more on the board is not the same (or damaged) as the schematic.
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…
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: LM5070 I'm back with another question about the LM5070. I recently posted my schematic here ( ) as I was having some issues with it. I now noticed that there is some noise on the output 3.3V line to the extent where my…
Other Parts Discussed in Thread: LM5070 Hi
Our customer found unusual operation on their system.
The supply voltage of LM5070 from POE is repeating ON/OFF when the cable is connected.
The waveform is below. (They set the class to 3)
Is there…
To add some more details, it appears that when 10V is applied across Vin/Vee, 70mA is consumed and the PSE signal is loaded. Looks like without the LM5070 in place, one of my PSEs is applying 10V while waiting for Rsig and then aborting. With the LM5070…
