A USB-C Power Delivery Sink based on the Cypress CYPD3177 USB PD ControllerDesigned by Pier 42 in Canada
Due to the current global situation, I cannot ship to countries where Canada Post has suspended service. Also I am only shipping tracked and insured parcels.
Now available as new revision Rev3. Green PCB and screw terminal and more important, new FETs as power switches. The new FETs have a Rds_on of only 9.5 mOhm, which cuts the dissipation almost in ha...Read More…
Now available as new revision Rev3. Green PCB and screw terminal and more important, new FETs as power switches. The new FETs have a Rds_on of only 9.5 mOhm, which cuts the dissipation almost in half and keeps the board cooler, even with 5 A current draw.
USB-C PD offers the option to negotiate power delivery from a compatible power supply. The USB-C PD-Sink plays the role of a sink device, enabling any device to be powered from a USB power supply. Any type of power connector can be attached through a 2-pin screw terminal or directly soldered into the PCB for a lower profile. The voltage can be set to 5V, 9V, 12V, 15V or 20V and current is set fixed to 3A, but up to 5A is possible. BCR stands for Barrel Connector Replacement, the term is invented by Cypress, the manufacturer of the controller chip in use here. This board has the goal to replace random power adapters with a standardized way to use a USB-C power delivery (USB PD) adapter instead. For regular operation, no programming or software configuration is involved with this design. 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. I made the conscious design decision to not add a USB-A connector option at the output end. I did not want to build a device, that is capable of putting more than 5V on the VBUS pin of a regular USB cable and potentially destroy the device that is plugged in.
I wanted to provide small form factor, easy to use, no software involved solution.
The USB-C PD Sink can be built in-line with an existing power cable to make almost every device USB-C compatible.
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Canada Post: Tracked Packet
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