Views: 17 Author: Site Editor Publish Time: 2021-02-22 Origin: Site
At the launch of Xiaomi 10, Lei Jun introduced a new technology - gallium nitride GaN charger, as a highlight of the conference, and Xiaomi 10 Pro fast charging perfect fit, 45 minutes can be full of Xiaomi 10 Pro power. Before this, OPPO, VIVO also have similar products, but the price is expensive.Xiaomi, a cheap marketing whiz, has pushed the price of this new tech charger below 150 yuan. Because of this, gallium nitride chargers are starting to attract a lot of attention both inside and outside the industry.
What is gallium nitride?
Those with better chemistry grades should know that nitrogen and gallium are two elements (Ga and N) respectively, and gallium nitride is a semiconductor material. Because its band gap width is greater than 2.2eV, it is also called a wide band gap semiconductor material, and also known as the third generation semiconductor material in China.
Use of gallium nitride
In the field of power related to charging, gallium nitride is used in fast charging head, frequency converter, new energy vehicles and other scenarios;In the radio-frequency field, gallium nitride is used in 5G base stations, military radars and low-orbit satellites, which are becoming more and more popular.
Advantages and disadvantages of gallium nitride
Compared with other semiconductors, gallium nitride has much higher breakdown field strength, saturated electron migration speed and thermal conductivity, which indicates that gallium nitride is more suitable for high power and high frequency power devices than silicon material.
At the same time, there is another advantage: small size, high power density.
Do not look down upon this small volume, our traditional idea, the greater the power, the larger the volume of the charging head, to 27W, or even 40W fast charging time, the size of the charging head has been fast and a charger as big as the same. At this point, I miss Apple's 5W charging head, which is about the size of a tofu cube.Is it possible, then, that there is a material that can fulfill the need for small volume, high power and fast charging? This is what gallium nitride was expected to be when it was first created.
Xiaomi's quick-charge, for example, is only 56.3mmx30.8mmx30.8mm in size, half the size of the 65W adapter that is standard in laptops.Going out can save a lot of space in your backpack.
But on the market on gallium nitride charging head price is generally more expensive, because its raw materials are substances not found in nature, completely rely on artificial synthesis, equipment requirements are demanding, technical requirements are extremely complex.Due to the high cost of raw materials, the gallium nitride chip in the fast charging head is also very expensive. Therefore, the price of the gallium nitride charger is higher than that of the ordinary charger, but its small size, light weight and efficient charging speed are acceptable for users with high quality requirements
Why choose a gallium nitride adapter?
At present, there are not many choices of gallium nitride fast charging brands on the market. The long charging head designed by the mobile phone enterprises led by Huawei and Xiaomi is easily loosened by the pull of the data cable when it is inserted into the wall, which is not a relatively perfect solution.
Suyuanxin started to develop 65W,100W,200W gallium nitride charger since 2018, which is not only small in size, light in weight, multi-port output, but also supports high power output.Currently, Apple's MacBook Pro 16inch requires a PD96W to charge it. A small charger can charge a variety of mobile devices, which greatly solves the problem of most chargers for people. People do not need to own so many chargers. In a true sense, one adapter is suitable for all mobile devices.This can save social resources, more environmental protection.
