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.

Power chain in your schematic:
- Net 1 (USB VBUS) -> SS14 anode
- SS14 cathode -> Net 2 (post-diode 5 V)
- Net 2 -> AP2112 VIN and EN
- AP2112 VOUT -> Net 5 (3.3 V rail)
What ERC is telling you:
- VBUS path has no source: “Power input not driven” on USB-C:VBUS and USBLC6:VBUS (Net 1).
- Regulator input is unpowered: “Power input not driven: AP2112:VIN” (Net 2).
- Therefore all loads on Net 5 appear unpowered: MicroSD:VDD, CP2102:VDD, ATEC:VCC, etc.
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.
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

Capacitance

22uF

Capacitance

100nF

Capacitance

100nF

Capacitance

10pF

Resistance

10kΩ

Resistance

10KΩ

Resistance

5.1kΩ

Resistance

5.1kΩ

USB-C

USBLC6

AP2112

CP2102

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