Silicon-based chargers represent a mature, reliable technology that has been used in electronics for decades. At low to moderate power levels (up to around 30W), silicon still holds a cost advantage, since its manufacturing process and materials are cheaper than GaN.
As power levels climb, though, silicon's limits become obvious: efficiency drops at high switching frequencies and heat output increases, which demands bigger heat sinks and a larger housing. That is why silicon adapters above 65W tend to stay physically bulky.
GaN removes that constraint by generating less heat at the same power level while operating at a higher switching frequency. As a result, adapters above 100W can now fit into housings roughly half the size of their silicon equivalents.
On cost, GaN still carries a somewhat higher manufacturing price, but that gap is closing quickly as the market scales. Over the long run, GaN is expected to become the standard for mid-to-high power products, while silicon holds on in low-power, price-sensitive segments.
Charjett's product strategy reflects that same split: GaN is used where high power and portability matter most, while more budget-friendly silicon-based solutions remain available for basic needs.