Hello Lorenzo,
Typically, I suggest injecting the signal at the 50Ohm resistor that connects the output and the feedback circuit. Check out our TPS23753AEVM-004 datasheet for a reference. I do not see this on your schematic, but if you have something…
Hi Tom,
I have validated the changes to TPS23753AEVM-004 for 5V operation and can report that it performs as expected. As mentioned earlier the original design used a POE13F-50LD that has a primary inductance of 40uH. When calculating the minimum inductance…
Part Number: TPS23753A We use the TPS23753AEVM-004 as a reference for our own implementation of the TPS23753A POE power supply. We've updated the evaluation kit succesfully to 12V output. However when we implement the schematics in our design the output…
Hi Bartosz, On the schematic you have sent, I see they went from the 5V variant of the TPS23753AEVM-004. The Wurth 7491195331 is intended for (3.3V, 21uH, 10V bias). If they want a 5V design, I suggest they use a transformer with similar specifications…
Hi Matt,
1. TPS23753AEVM-004 would be the best solution currently in our portfolio for this operating condition. However, PMP9282 has a DCDC that meets this operating condition. You can maybe copy the same power stage (has a transformer available…
Hi Danny,
Which EVM would you like?
www.ti.com/.../tps23753aevm-235
www.ti.com/.../tps23753aevm-004
www.ti.com/.../tps23753aevm-001
I will attempt to look for these design files, but have not had luck in the past. These are fairly old designs.
Thanks…
Thanks Tom,
I accept that we will only achieve 10W power due to the losses in the circuit. In the meantime we want to figure out how to achieve 10W on 12V input.
We have gone ahead with the PMP7355 design, however modified using parts of TPS23753AEVM-004…
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…
Part Number: PMP9175 Other Parts Discussed in Thread: TPS23753AEVM-004 , TPS23753AEVM-001 Hi
Our customer has the following question for PMP9175 design.
1.
PMP9175 has secondary synchronous FET for high-efficiency operation.
Compared with un-synchronous…