This board features an FUSB302B as a Type-C Port Management (TCPM) chip. You can purchase one on Tindie.
The FUSB302B is a fully-capable USB Power Delivery device. The power header is rated to 100 W (20 V at 5 A) if both Vbus pins are used along with two ground pins. The FUSB302B's max I2C clock frequency is 1 MHz.
Example code for use with Arduino can be found here. The USB-C Explorer also uses the same chip.
Here are the connections you will need.
Pull requests are welcome. If you have questions or comments, you can email me directly at jason@reclaimerlabs.com.