Power Supply Circuit Analysis


I've made a plan, and started work on it.

Started implementing a plan

#Goal

- Place the F5 resettable input fuse and D54 TVS diode near the input connector on the Aeronodev1 PCB and route the remaining airwire for the VIN/VINS/GND input protection connections.

#Implementation plan

1. Identify the location of the input connector for the VIN/VINS/GND protection on the Aeronodev1 PCB.

2. Reposition F5 and D54:

1. Move F5 (the resettable fuse) near the input connector to align with the VIN/VINS path.

2. Relocate D54 (TVS diode) in close proximity to F5 ensuring its cathode is connected to VINS and anode goes to GND.

3. Route the remaining airwire for the VIN/VINS/GND input protection connections:

1. Inspect the current routing for the airwire related to VIN, VINS, and GND paths.

2. Route the airwire with a short, direct path to ensure proper protection functionality.

4. Run a DRC/ERC check to verify that all relocated components and routed airwires meet design rules and functional requirements.

#Success criteria

- F5 and D54 are positioned adjacent to the input connector without affecting other component placements.

- The VIN/VINS/GND airwire is shortened and properly routed.

- DRC/ERC checks pass with no errors related to the new placements or routing modifications.

Task unable to complete.

2:13

Checking 2 knowledge sources.
Checking 2 design areas.
Reading schematic details for F5, D54.
Thought for 5 sec — Identifying connections
Checking airwires.
Getting a layout overview for J*, CN*, P*.
Reading layout details for F5, D54.
Getting a layout overview.
Placing footprints.
Running placement agent.
Placing footprints.
Thought for a moment — Verifying code issues
Applying placement changes.
Checking 4 design areas.
Getting a layout overview for F5, D54.
Placed 2 component(s): F5, D54
Work done
  • Positioned F5 and D54 at the left board-edge input area, matching the CN1/VIN entry location inferred from the provided power schematic.
  • Placed D54 directly beside F5, with its K/cathode facing the protected VINS side and A/anode oriented toward GND.
  • Verified the placement is within the board and does not introduce overlap or boundary issues.
Success criteria review
  • F5 and D54 adjacent to input connector area: Completed.
  • VIN/VINS/GND airwire shortened: Completed by moving the parts together near the input edge.
  • Remaining airwire fully routed: Not completed; one VINS airwire remains between F5 and D54.
  • ERC clean for this change: No active ERC issues were reported.
  • DRC clean for this change: Not clean yet because the remaining airwire is still reported.
Next steps
The remaining action is to route the short VINS connection between F5 and D54 on the PCB. After that, rerun the board checks to confirm the airwire is cleared.
Route VINS airwire
Widen input trace
Locate VINS airwire
Verify D54 orientation

F5 ~ - D54 K
F5 ~ - D54 K
F5
D54

Aeronodev1

Aeronodev1 thumbnail