GaN also known as gallium nitride is a semiconductor material that first gained popularity in the 1990s as a replacement for silicon in the build of chargers and power accessories. The makeup of GaN means it’s equipped to safely conduct much higher voltages than ever before, even more than silicon. Electrical current can pass through GaN transistors faster than those made of silicon, meaning faster and more efficient processing with less heat created.
To put it simply, GaN chargers rapidly switch between on and off states, which allows the charger to convert an AC, or alternating current, to a DC, or direct current, much faster than traditional silicon-based chargers. That means GaN chargers are more energy efficient and generate less heat since it doesn’t require as much energy to reach the same output level as silicon chargers.