iCharge

iCharge — a powerful modular charging block
-------------------------------------------





### Why build it?

A few years ago, I bought the SW3518 module. It caught my attention as a buck converter supporting a wide range of charging protocols. It was stable, reliable, and most importantly — affordable. Even now, it remains popular, with plenty of positive reviews. I’d recommend it myself — especially the S version rated at 65 watts. If you want more power, go for the P version, which delivers up to 100 watts. But keep in mind: any of these will get hot under full load. That’s why it makes sense to run them at no more than 70% of their rated output — a fair rule for most charging modules with high-frequency MOSFETs inside.



### Concept and execution

Over time, I decided not just to use the module, but to build my own charging station based on the SW3518. The idea was simple: each module is independent, all wired to a common power rail. This adds reliability — if one fails