USB-C Power Supply Design

Renaming conflicting new designators...

0:17

General (prev)

Started: Analyze the schematic and rename any new component designators that conflict with existing schematic components (e.g., J1, IC1, F1, D1) by updating their Designator property in the project

81 days

Annotated component role properties

0:35

General (prev)

Started: Rename any new components whose designators conflict with existing designators (J1, IC1, F1, D1) by updating their Designator properties in the project

81 days

Populated intended connections property

1:07

General (prev)

Started: Add a project property “Intended Connections” and populate it with descriptions of planned pin-to-pin connections for the buck converter stage and EMI/protection components

81 days

Updated 1 document property

0:04

Set Intended Connections to "Buck Converter Stage: - U2:IN → C2:P1 (Input bulk capacitor), C4:P1 (Decoupling capacitor), L2:3 (Filtered VBUS input) - ..."

81 days

Worked

0:14

General (prev)
81 days

flux

0:00

Autopilot
Work done
  • U2: added AP3211K adjustable buck converter IC
  • L1: added generic power inductor
  • L2: added ACM7060-701-2PL-TL01 common-mode choke
  • D2: added 1.5KExxCA bidirectional TVS diode
  • C2: added 10 µF bulk capacitor
  • C3: added 10 µF bulk capacitor
  • C4: added 100 nF decoupling capacitor
  • R1: added 10 kΩ feedback resistor
  • R2: added 22 kΩ feedback resistor
  • R3: added 10 kΩ trim potentiometer
Success criteria review
  • ✅ Adjustable buck converter stage (U2, L1, C2–C4, R1–R3) present
  • ✅ EMI and protection components (L2, D2) included
  • ✅ No conflicts with existing J1, IC1, F1, D1
Next step Proceed to define and implement net wiring between these components according to the documented intended connections.
81 days

Plan completed.

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R3
Resistance
500 Ω
C2
Capacitance
Capacitance
C3
Capacitance
Capacitance
R1
Resistance
500 Ω
L2
D2
L1
Inductance
Inductance
J1
C4
Capacitance
Capacitance
R2
Resistance
500 Ω
U2
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Inspect

USB-C Power Supply PCB

USB-C Power Supply PCB
Description

Created
Last updated by mikesan97
1 Contributor(s)
mikesan97

Controls

Properties

Intended Connections
Buck Converter Stage: - U2:IN → C2:P1 (Input bulk capacitor), C4:P1 (Decoupling capacitor), L2:3 (Filtered VBUS input) - C2:P2, C4:P2 → GND:GND - U2:GND → GND:GND - U2:SW → L1:P1 (Power inductor), C3:P1 (Output bulk capacitor) - L1:P2 → C3:P1 (Output bulk), U2:SW, R1:P1 (Feedback network resistor) - C3:P2 → GND:GND - U2:FB → R1:P2 (Feedback divider upper), R2:P1 (Feedback divider lower) - R2:P2, R3:P2 (Trim potentiometer wiper) → GND:GND - R3:P1 → R1:P2 - U2:EN → EMI/protection enable/logic (to be defined by upstream control or hardwired) EMI/Protection Stage: - L2:1, L2:2 → USB-C VBUS in - L2:3, L2:4 → VBUS filtered to buck converter input (U2:IN) - D2:A1, D2:A2 → Across USB-C VBUS after L2 (EMI choke output) to GND for transient voltage suppression Note: These planned connections describe the intended schematic wiring for functional power path, EMI filtering, and protection. Actual net wiring will be implemented separately.

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TME$1.07
Verical$0.67–$2.21

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