What is GaN Charging?
How Gallium Nitride lets a wall charger stay smaller and run cooler than older silicon designs.
GaN (Gallium Nitride) is a semiconductor material used in some USB-C wall chargers. Compared with older silicon power circuits, GaN switches can handle higher voltages in a smaller package, which is why many compact high-wattage chargers use it.
GaN does not change the charging protocol. A 65W GaN charger and a 65W silicon charger can both speak USB Power Delivery. The phone still requests only the power it is designed to take.
When you shop, treat “GaN” as a size and heat story, not a speed guarantee. Speed still depends on wattage, USB PD or PPS support, the cable, and the phone.
- Look for the wattage printed on the charger.
- Look for USB-C PD (and PPS if you use a Samsung PPS phone).
- Use a cable rated for that wattage.