Compared with the continuous upgrading of mobile phone tablets, few people have paid attention to accessories chargers. However, recently, a new technology gallium nitride has attracted a wave of heat. Gallium nitride chargers have been rapidly applied by manufacturers with the characteristics of small volume and high efficiency. So what is gallium nitride and what is the difference between gallium nitride charger and other chargers?

1、 What is gallium nitride

Gallium nitride (GAN) is a compound of nitrogen and gallium, with specific semiconductor characteristics. It was used in light-emitting diodes in the early stage. It belongs to the same element periodic group as commonly used silicon, with high hardness, high melting point and strong stability. Gallium nitride material is an important semiconductor material for the development of microelectronic devices. It has the characteristics of wide band gap and high thermal conductivity. It can be used in chargers to adapt to small transformers and high-power devices High electrical efficiency.

2、 Advantages and disadvantages of gallium nitride charger

Advantages: small size and safety

Compared with silicon materials of ordinary semiconductors, gallium nitride has wider band gap and good heat conduction, and can match smaller transformers and high-power inductors. Therefore, gallium nitride charger has the advantages of small volume, high efficiency and more security. Recently, in order to achieve faster charging speed, the power of the charger is relatively large, and 40w50w charger is very common. Higher charging power means that the size of the charger is also getting larger and heating is serious.

After switching to gallium nitride technology, the size of the charger can be greatly reduced and very portable. At the same time, the gallium nitride charger can also maintain high efficiency and low temperature, with better safety.

Disadvantages: high cost

The main disadvantage of gallium nitride charger is high cost. As a new third-generation compound, gallium nitride has high requirements for synthesis environment. From the perspective of manufacturing process, gallium nitride has no liquid, and can not use the traditional Czochralski farad of monocrystalline silicon to produce monocrystalline silicon. It is synthesized purely by gas reaction. Powdered gallium nitride can be formed only by heating metal gallium at more than 1000 degrees in ammonia flow for half an hour. Therefore, the cost of gallium nitride charger is higher, The price of gallium nitride chargers on the market is also higher than that of traditional chargers.