Other Parts Discussed in Thread: TPS2373, TPS2372
We have a proto build for testing of a supply using TPS23754, based on the -383 EVM (SLVU304C ref design), with FET and diode bridge options to see whether they matter at 25W. It works fine, but we are now looking at a design that will need 8.5V rather than 12V.
We need to push this design to get as much power as possible out of a standard 802.3at switch output, so efficiency matters. Should we consider a custom transformer with different turns ratio, and if so, are there any tools to help design it? Or would it make so little difference that it's not worth the hassle and cost?