JSON Format Request for Nets and Connections
Thought for 1 min 12 sec
Net 5 is your 3.3 V rail, but ERC flags it as “missing power” because there’s no recognized source upstream in the power chain.
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Power chain in your schematic:
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What ERC is telling you:
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Why this happens
- The checker only considers a net “powered” if it sees a power-output/voltage-source on the upstream nets. In your design, VBUS (Net 1) is only connected to the connector USB-C, ESD USBLC6, and diode SS14 anode—none of which drive power in ERC.
- Your bench “DC Supply” V1 symbol (CATHODE on Net 1, ANODE on GND) isn’t recognized as a board power source by ERC, so Net 1 is still undriven in review, which cascades to Net 2 and then Net 5.
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How to resolve
- Provide a recognized source on VBUS (Net 1): power the board from USB, or add a proper power-source/power-flag on Net 1 so ERC knows it is driven.
- Keep AP2112 EN high (you already tie EN to Net 2, which is fine).
- For bring-up without USB, you can temporarily add a power source to Net 2 (post-diode) or directly to Net 5 if you want ERC clean during offline checks.
If you want, I can help add a power-flag/source on Net 1 so ERC stops flagging Net 5 as unpowered.
Check MicroSD VDD net
Add power flag
Review Missing Power errors
Verify AP2112 enable
