Proto Board for Sink Mode
The additional hardware required for several MCUs can easily be implemented on a proto board. The below proto board implements the schematic and adds connectors and headers.
The above design uses a USB C breakout board with a USB C receptacle (female). The proto board connects all 4 GND and all 4 VCC pins. Many other options exist.
Additionally, it uses screw terminals to connect the consumer to the power provided by the USB power supply.
| Label | Component | Quantity |
|---|---|---|
| LM393P | Dual comparator with open-collector output | 1 |
| 100 | 100Ω resistor | 2 |
| 200 | 200Ω resistor | 2 |
| 1K | 1kΩ resistor | 1 |
| 3.3K | 3.3kΩ resistor | 2 |
| 5.1K | 5.1kΩ resistor | 2 |
| – | 10 pin header | 1 |
| – | 2 pin screw terminal | 1 |
| – | USB C receptacle | 1 |