Project Description
I need a complete electronic design that takes a 48 V PoE mid-span input and delivers a stable 24 V PoE end-span output at up to 30 W while passing full gigabit Ethernet data. The primary use case is networking equipment, so signal integrity across all four twisted pairs is essential.
Here is what I expect from you:
• Schematic and fully routed PCB ready for manufacture, supplied as standard Gerber and drill files.
• An accompanying datasheet that details electrical characteristics, pin-out, thermal limits, protection features and recommended operating conditions.
• Bill of materials with realistic lead-times and two alternative parts for any component prone to shortage.
• Design notes that explain key calculations (magnetics, DC-DC conversion, PoE magnetics isolation, common-mode handling) so I can review the engineering rationale.
• Confirmation in writing that the design is able to satisfy both CE and RoHS requirements; include the exact directives you reference. I will arrange formal lab testing later, but the PCB layout, creepage/clearance and component selections must already conform.
I have no brand or component preferences, so feel free to choose the most cost-effective PD controller, isolated DC-DC topology and Ethernet magnetics that meet the above goals. Space efficiency is welcome but not at the expense of thermal performance or gigabit eye-pattern quality.
Deliver the files in a single archive along with a brief README on how to reproduce the board in KiCad or Altium (whichever you use). Once I verify the Gerbers import cleanly and the datasheet covers all requested parameters, the milestone will be released.