Rev 3.1. Fab set OpenFC-Lite-Rev3.1, verified against board and schematic.
Changes since rev3:
- 4V5 rework: the TPS2116 power mux, its diodes and RC are gone. A DSK24
diode-OR (D6 from the buck, D10 from +5V_USB) feeds the new +4v5 rail for
the 3.3 V and 1.8 V LDOs, JST and pads. The buck output is plain +5V and
drives the external 5 V pads directly, so USB never back-feeds them. - All vias 0.35/0.2 mm; board setup on the line standard.
- Substitute STEP models for USB-C, TF, switch and comparator rebuilt from
the trusted wrl geometry: the STEP fit-check model now matches the board.
EMC relevance (technical file): DC power path changed (mux removed, diode-OR
added); the switcher itself, clocks and RF are untouched.
Assets: JLCPCB fab set, STEP fit-check model, schematic PDF.