Pier 42’s USB-C Power Delivery Sink is a great little board that acts as a sink device, allowing users to connect devices (via USB Type-C port) and regulate the amount of voltage and amps they receive. Any power connector can be attached to the board using a two-pin screw terminal or soldered directly to the PCB for projects that require a low profile. Pier 42 states the goal of the board was to replace random power connectors with a solution that provides a way to use a USB-C adapter instead.
The USB-C PD Sink is equipped with Cypress’ EZ-PD BCR (Barrel Connector Replacement) integrated USB Type-C port controller chip, which enables users to set the required voltage (5V/9V/12V/15V or 20V) and up to 5A is possible, although the board’s current is set to 3A. No programming or software configuration is required, and Pier 42 states, “All options are set through resistor values. If needed, an I2C interface to a microcontroller is available, to access status and control registers. This part of the board is separated through a break-off tab (mouse bits) and can be snapped off.”
On the features side, the USB-C PD Sink is outfitted with a red LED to indicate a failed power request, has an I2C telemetry interface (with snap-off option) to controller chip, and can have a fixed voltage implemented by replacing the switch with a wire jumper. The USB-C PD Sink is available now on Pier 42’s Tindie page for $16, and with a barrel jack screw terminal added for $2 more.