Hey everyone! I'm tackling a personal project and could use some assistance. I'm trying to create a board that connects my motherboard's USB 3.2 Type-E header to a USB-C port on the front panel. I want to maintain the USB data integrity while manipulating the VBUS line to inject 20V from a DC-DC converter that I plan to power via a PCIe or SATA cable. A PD controller like the STUSB4500 will help manage the power negotiation, enabling 60W charging just like newer motherboards offer. I initially reached out on Fiverr but got a quote for €200, which feels a bit steep for what I believe to be a straightforward task. I'm looking for someone to design the board and provide me with the necessary files for PCB production. If you're interested or have questions, please let me know! Thanks!
3 Answers
Honestly, check out PCBWay; they can take care of the design for you. I think €200 isn't that outrageous for a one-off custom piece, especially since it involves some intricate connections for both power and data.
You might be better off using a ready-made DC to PD module; they often come with the switching converter included. The tricky part would be wiring everything correctly so that you get both the VBUS and CC lines along with the high-speed data signals through to the port. Just a heads up, you’ll need a good splitter for that!
Your goal seems a bit murky. Are you looking to have a constant 20V output, or should the voltage vary based on what's connected? The STUSB4500 only works like a sink in this scenario. It might be simpler to just use a standard USB-C and a PD injector without the need for a custom board.
Yeah, if the USB-C can handle the power you need, that might be a smarter way to go!
Yeah, definitely need a splitter for sure!