Other Parts Discussed in Thread: , TPS23758
I am looking at the TPS23755 as a POE solution and have several questions. I've also included a list of the requirements.
Requirements:
- Powered Device (PD)
- 802.3at Type 1
- 13Watt Support
- DC-DC converter with either 12V output of 3.3V output.
- Support for Gigabit Ethernet. Must support power on all 4 twisted pairs.
- Space and cost requirements are an important aspect of the design.
Questions:
- I noticed that the DC-DC converter EVM (TPS23755EVM-894) is isolated. Is this necessary in this POE application? If not, how would the EVM circuit change and what are the risks?
- How can I go about obtaining the source schematic files for the EVM? Preferably DxDesigner. If not available, send source of any available design tool.
- Are there any similar devices to the TPS23755 that supports 3.3V output on the DC-DC side?
- Would TI be able to review the schematics and layout?