A USB-C Power Delivery Sink ( Trigger / Decoy ) 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. I recommend shipping tracked and insured parcels to add security for the buyer and seller.
This is a USB PD Sink Trigger / Decoy board. Rev 5 now available. Another improvement with TVS protection diodes on input and output and new FETs as power switches. The new FETs have a Rds_on of only…Read More…
This is a USB PD Sink Trigger / Decoy board. Rev 5 now available. Another improvement with TVS protection diodes on input and output and new FETs as power switches. The new FETs have a Rds_on of only 6.9 mOhm (measured), which reduces the dissipation even more compared to the previous version 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-PB 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, 15V (12V with solder bridge), or 20V and the current can be set to 1A, 2A, 3A, or 5A. This board has new FETs, which have a Rds_on of only 6.9 mOhm measured. Also new in this latest revision are 2 TVS diodes on the input and output for over voltage and surge protection. 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 the switches or 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 bites) 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. A heatshrink tube is provided to protect the board in a permanent installation.
The board can also be ordered with fixed voltage and current setting. Available settings are 5V 3A, 9V 3A, 15V 3A and 20V 5A. Those options are available for applications where adjustable values are not desirable.
A set of 5mm x 2.1mm barrel jack+plug and a 2-pin 0.1" female header are available to add on. The barrel jack is a generic type with screw terminals for wires. The pin header has a current limit of 3 Amps and can be used to power a Raspberry Pi through the HAT connector.
This is a set and forget device. Set your current and voltage needs before plugging the device to your USB-PD source and enjoy the power at the output. This is not a power supply to change voltage and current during operation.
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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Due to the current global situation, I cannot ship to countries where Canada Post has suspended service. Also I recommend shipping tracked and insured parcels to add some security for the buyer and seller. Please contact me before ordering and I might be able to get a better rate for your destination country. Thank you very much for your understanding and be well. - Pier42.
Greg | Oct. 28, 2021
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Peter | Feb. 14, 2020
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