USB-C Power Hub Design
Worked for 4 mins 49 sec
Assigned validated manufacturer names and MPNs to every requested capacitor, resistor, and L2 without changing connectivity or placement.
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- The three “Missing Power” errors remain false positives: the STUSB control outputs are incorrectly typed as power inputs in their library symbols. The actual pull-up, NPN inverter, and eFuse-enable circuits are correct, and the available project editing controls cannot safely correct individual terminal types.
No new ERC errors were introduced.
Start Auto-Layout
Thought for 6 sec
I’ll inspect the board state and determine whether placement, routing, or both are required. I’ll apply the needed auto-layout steps, then verify airwires, overlaps, component containment, and DRC.
Worked for 11 mins 3 sec
PCB inspection completed:
- Current board is the default 160 × 100 mm, 4-layer layout.
- All 83 components are placed, but placement is scattered and partially routed.
- Both replacement and routing are needed; existing partial traces may become stale after replacement.
- Recommended direction: resize to approximately 50 × 80 mm or 80 × 80 mm, place the three USB-C receptacles at accessible edges, regroup the power/PD sections, then reroute and run DRC.
No layout changes were applied because available ACUs were exhausted during execution.
Configure 80mm board
Choose compact layout
Review PCB DRC
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Block Diagram
Text
USB-C Upstream Sink (100 W target, e-marked 5 A cable) -> CC/VBUS ESD + fuse/eFuse + reverse/current protection -> Upstream PD sink controller -> protected 20 V system bus + input current/voltage telemetry |-> 20 V to 5.1 V / >=5 A buck -> source power switch/current sense/discharge -> USB-C Port A PD source -> Raspberry Pi 5 |-> programmable buck/buck-boost 5/9/12/15/20 V, source power switch/current sense/discharge -> USB-C Port B PD source -> display `-> auxiliary logic rail -> policy MCU Policy MCU upstream sink controller Policy MCU Port A source/DRP controller Policy MCU Port B source/DRP controller Policy MCU converter setpoints, source enables, load shedding, discharge controls All policy and allocation controls are firmware-controlled. Port A is capped at 5.1 V/5 A; Port B is capped at 20 V/3 A. Simultaneous allocations must stay inside the negotiated upstream contract after conversion losses and controls allowance.
