The Power Delivery Board is nothing but a sink controller board. It negotiates with the USB PD Charger and gets the desired voltage and current rating as per the desired configuration.
USB-C PD Power Delivery Board could be used in various applications where you want to use USB-C for powering your product or project.
USB-C PD Power Delivery Board provides a very easy-to-use DIP switch to select which voltage or current rating you need O/P from your USB PD Charger.
It also has an on-board DC-DC converter, which can generate either 5V or 3.3V based on the shorted jumper. It can easily provide you with around 3.3W. NOTE: Even more power could be taken from the DC-DC Converter if the USB PD voltage is lower(9V, 12V, etc.) or if you use an external heatsink.
Voltage, current selection or even monitoring is possible with the I2C interface, which is provided on the 4-Pin header.