Hey folks! I'm embarking on a cool project to create a centralized charging hub for my family to eliminate the clutter of separate chargers. The setup will feature 7 independent USB-C ports, all powered by a robust 24V DC power supply, with an ESP32 monitoring each port. The idea is that each port will have an LED that indicates when the connected device is fully charged. My main challenge is selecting the right DC-to-USB-C PD modules. I'm looking for modules that can handle around 24V input, provide full Power Delivery (PD) and Programmable Power Supply (PPS) support for modern devices, and can automatically negotiate the output voltage. I've come across the **SW3518S** (100W) and **IP6518** (45W) options, but I'm uncertain if these are the best fit for a multi-port charger. I'm also interested in any insights on potential pitfalls, like thermal management or power supply considerations. Any advice would be super helpful!
3 Answers
Thermal issues are a big concern with this kind of project! You definitely want to ensure you have proper cooling for the modules, especially when all seven ports are in use. Overheating can cause serious problems or even damage your components. I’d recommend looking into heat sinks or even a fan if your design allows it. And remember to monitor the temperatures during testing!
Make sure the modules you choose can handle the negotiation process well. You'll want devices that automatically adjust to the required voltage without user input. Those chips you mentioned should be fine, but always double-check their specs to ensure they can do what you need in practice!
If you’re going the DIY route, it might be a good idea to include at least one port that uses the older PD1 standard. Some of the older PD tech can deliver 12V, which can be quite useful for various projects. Just something to consider if you’re planning on running different types of devices!
Nice, thanks for the tip! I'll keep that in mind as I plan the design.