200 yuan charger, why is it worth buying?

In recent years, with the increasing power of mobile phone charging, the volume of charger is also increasing.

Especially for those above 50W, it's the same as a small power bank.

It is not only inconvenient to carry, but also easy to occupy other row socket positions.

Many people worry that in the future, 100W fast charging will be popular, so they have to bring a brick like charger when they go out.

In this way, the value of fast charging will be greatly reduced, so it's better to take a power bank to go out.

Fortunately, manufacturers have found a kind of material with high power and high conversion efficiency, so that we can get rid of this trouble.

At the Xiaomi 10 series press conference a few days ago, Lei Jun spent a lot of time introducing a kind of charger called Gan.

The same is 65W fast charging, its volume is twice smaller than ordinary charger, calorific value is lower.

It's a blessing to the party.

- 1 -

 

How powerful is gallium nitride?

Gallium nitride, as the name suggests, is a compound of nitrogen and gallium.

 

It is the third generation semiconductor material after the first generation of "Silicon" and the second generation of "gallium arsenide". It has the advantages of wide band gap, strong breakdown ability, high thermal conductivity, high temperature resistance and radiation resistance.

Anyway, it's a multi-directional lead. The traditional charger switch is made of silicon and germanium. Due to the material characteristics, the switching frequency is low, and a large transformer is needed.

It's different to replace it with gallium nitride. When a single car becomes a car, the switching frequency is greatly improved and the loss is smaller.

In this way, the charger can use smaller transformers, capacitors, inductors... So as to effectively reduce the volume of the charger, reduce heating and improve efficiency.

For example, Xiaomi's 65W Gan charger is only one third of Apple's 61W fast charger.

The length and width are similar to that of Apple's ancestral 5v1a, which does not affect the use of other row sockets at all.

The heating during charging is also better controlled, which reduces the risk of spontaneous combustion caused by charger overheating.

In addition, with the support of this technology, the fast charging power of mobile phones is expected to reach a new high.

A few days ago, Beisi used gallium nitride to make the world's first 120W charger.

This year is the year of the explosion of gallium nitride in the field of consumer electronics. Xiaomi released a gallium nitride charger, while realme announced that it will give a gallium nitride charger in the X50 pro.

According to a rumor, Huawei P40 will also be equipped with gallium nitride charger as standard.

According to cnBeta, Apple will release Gan chargers this year to support up to 65W fast charging.

- 2 -

Why is Gan charger so expensive?

Gan charger has many advantages, but its disadvantages are also obvious - expensive.

At present, the price of domestic Gan chargers is mostly between 150-200, which is about twice that of ordinary fast charging head with the same power.

When Apple releases the 65W Gan fast charging head, the price will probably exceed 1000 yuan.

The main reason why it is so expensive is that gallium nitride is a substance not found in nature. It is completely synthesized by man, and it must also be synthesized by gas.

With the current technology, the synthesis speed is slow, not to mention, reflecting more by-products.

This makes gallium nitride crystal material extremely rare. A 2-inch single crystal costs more than 20000 yuan.

Don't be too expensive. The production capacity of this product is insufficient, and it's not necessarily available for money.

In order to save money, charger manufacturers mostly use leftover materials (epitaxial wafers) produced in the manufacture of single crystals.

But the corner materials here are not cheap. The 8-inch ones sell for more than 10000, which is more than 30 times of the silicon wafers of the same area.

In this way, the cost will naturally go up.

Xiaomi sold 149 because of the large size of his family, which can cover the cost. Before, most Gan chargers were more than 200.

Fortunately, Gan industry is more and more widely used. With the increase of R & D investment, the cost is expected to come down in the future- 3 -

Applications of Gan in other fields

In fact, gallium nitride is not a new material, as early as 1990, it was often used in light-emitting diodes.

At present, in addition to the field of mobile phones, it is also widely used in optoelectronics, radio frequency and other fields, including 5g base stations, military radars, LEO satellites, aerospace, new energy vehicles

Almost 360 degrees coverage of the stock market technology sector.

Take 5g base stations as an example. Compared with 4G era, 5g has greatly increased the requirements for RF power and energy consumption.

Especially in the United States, which uses millimeter wave, the frequency is higher and the energy consumption is higher.

In this case, the traditional silicon is a bit untenable.

Gallium nitride is much more awesome. As a wide band gap semiconductor, it can withstand higher working voltage, which means its power density and working temperature are higher.

At the same time, the energy consumption ratio is also lower, which is suitable for the construction of 5g macro base station.

Compared with 3G and 4G era, the number of RF devices in 5g era will increase by tens of times, even hundreds of times.

Therefore, in the 5g field, Gan is as much as there is.

Yole, a research institute, predicts that the market scale of Gan RF devices in 2024 is expected to exceed US $2 billion.

 

Gallium nitride also plays a key role in national defense applications, electric vehicles, photovoltaic and other power semiconductor fields.

- 4 -

Opportunities to "bypass patent barriers"

For us, Gan is not only a new semiconductor material, but also a good opportunity to "bypass the patent barrier".

 

For various reasons, we started far behind the developed countries in the first two generations of semiconductor materials.

 

Silicon, in particular, directly leads to our "pain of lack of core".

 

After they set up patent barriers, we have to pay several times or even dozens of times for each step forward.

 

But gallium nitride is not the same, everyone in the same starting line competition, who is afraid of who!

 

Especially in recent years, the state has launched a series of supporting policies for GaN

 

In 2013, the "863 Plan" listed the third generation semiconductor materials and their applications as an important content.

 

In 2015 and 2016 National Science and technology major project 02, it is clearly required to realize the independent and controllable GaN based RF devices and complete circuit technology to promote the sustainable development of China's third generation semiconductor in the field of RF power.

 

In 2017, Beijing, Jiangsu, Shandong and Guangdong successively issued 62 relevant policies to promote the development of compound semiconductors.

 

Chinese mainland, the United States, South Korea and China Taiwan are the top five countries in the world.

 

Chinese patents account for 23% of the global total.

 

Wentai technology, for example, is one of the best gallium nitride suppliers in the world.

 

San'an optoelectronics Co., Ltd. has finished part of Gan production line layout.

 

In recent years, with the increasing power of mobile phone charging, the volume of charger is also increasing.

 

Especially for those above 50W, it's the same as a small power bank.

 

It is not only inconvenient to carry, but also easy to occupy other row socket positions.

 

Many people worry that in the future, 100W fast charging will be popular, so they have to bring a brick like charger when they go out.

 

In this way, the value of fast charging will be greatly reduced, so it's better to take a power bank to go out.

Fortunately, manufacturers have found a kind of material with high power and high conversion efficiency, so that we can get rid of this trouble.

At the Xiaomi 10 series press conference a few days ago, Lei Jun spent a lot of time introducing a kind of charger called Gan.

The same is 65W fast charging, its volume is twice smaller than ordinary charger, calorific value is lower.

It's a blessing to the party.

 

- 1 -

How powerful is gallium nitride?

Gallium nitride, as the name suggests, is a compound of nitrogen and gallium.

 iPhone 12 charger cable

It is the third generation semiconductor material after the first generation of "Silicon" and the second generation of "gallium arsenide". It has the advantages of wide band gap, strong breakdown ability, high thermal conductivity, high temperature resistance and radiation resistance.

 

Anyway, it's a multi-directional lead. The traditional charger switch is made of silicon and germanium. Due to the material characteristics, the switching frequency is low, and a large transformer is needed.

 

It's different to replace it with gallium nitride. When a single car becomes a car, the switching frequency is greatly improved and the loss is smaller.

 

iPhone Charger Cable

In this way, the charger can use smaller transformers, capacitors, inductors... So as to effectively reduce the volume of the charger, reduce heating and improve efficiency.

For example, Xiaomi's 65W Gan charger is only one third of Apple's 61W fast charger.

The length and width are similar to that of Apple's ancestral 5v1a, which does not affect the use of other row sockets at all.

The heating during charging is also better controlled, which reduces the risk of spontaneous combustion caused by charger overheating.

In addition, with the support of this technology, the fast charging power of mobile phones is expected to reach a new high.

A few days ago, Beisi used gallium nitride to make the world's first 120W charger.

This year is the year of the explosion of gallium nitride in the field of consumer electronics. Xiaomi released a gallium nitride charger, while realme announced that it will give a gallium nitride charger in the X50 pro.

According to a rumor, Huawei P40 will also be equipped with gallium nitride charger as standard.

According to cnBeta, Apple will release Gan chargers this year to support up to 65W fast charging.

- 2 -

Why is Gan charger so expensive?

Gan charger has many advantages, but its disadvantages are also obvious - expensive.

At present, the price of domestic Gan chargers is mostly between 150-200,

When Apple releases the 65W Gan fast charging head, the price will probably exceed 1000 yuan.

The main reason why it is so expensive is that gallium nitride is a substance not found in nature. It is completely synthesized by man, and it must also be synthesized by gas

With the current technology, the synthesis speed is slow, not to mention, reflecting more by-products.

This makes gallium nitride crystal material extremely rare. A 2-inch single crystal costs more than 20000 yuan.

Don't be too expensive. The production capacity of this product is insufficient, and it's not necessarily available for money.

In order to save money, charger manufacturers mostly use leftover materials (epitaxial wafers) produced in the manufacture of single crystals.

But the corner materials here are not cheap. The 8-inch ones sell for more than 10000, which is more than 30 times of the silicon wafers of the same area.

In this way, the cost will naturally go up.

Xiaomi sold 149 because of the large size of his family, which can cover the cost. Before, most Gan chargers were more than 200.

Fortunately, Gan industry is more and more widely used. With the increase of R & D investment, the cost is expected to come down in the future- 3 -

Applications of Gan in other fields

In fact, gallium nitride is not a new material, as early as 1990, it was often used in light-emitting diodes.

At present, in addition to the field of mobile phones, it is also widely used in optoelectronics, radio frequency and other fields, including 5g base stations, military radars, LEO satellites, aerospace, new energy vehicles

Almost 360 degrees coverage of the stock market technology sector.

Take 5g base stations as an example. Compared with 4G era, 5g has greatly increased the requirements for RF power and energy consumption.

Especially in the United States, which uses millimeter wave, the frequency is higher and the energy consumption is higher.

In this case, the traditional silicon is a bit untenable.

Gallium nitride is much more awesome. As a wide band gap semiconductor, it can withstand higher working voltage, which means its power density and working temperature are higher

At the same time, the energy consumption ratio is also lower, which is suitable for the construction of 5g macro base station.

Compared with 3G and 4G era, the number of RF devices in 5g era will increase by tens of times, even hundreds of times.

THerefore, in the 5g field, Gan is as much as there is.

Yole, a research institute, predicts that the market scale of Gan RF devices in 2024 is expected to exceed US $2 billion.

Gallium nitride also plays a key role in national defense applications, electric vehicles, photovoltaic and other power semiconductor fields.

- 4 -

Opportunities to "bypass patent barriers"

For us, Gan is not only a new semiconductor material, but also a good opportunity to "bypass the patent barrier".

For various reasons, we started far behind the developed countries in the first two generations of semiconductor materials.

Silicon, in particular, directly leads to our "pain of lack of core".

After they set up patent barriers, we have to pay several times or even dozens of times for each step forward.

But gallium nitride is not the same, everyone in the same starting line competition, who is afraid of who!

Especially in recent years, the state has launched a series of supporting policies for GaN

In 2013, the "863 Plan" listed the third generation semiconductor materials and their applications as an important content.

In 2015 and 2016 National Science and technology major project 02, it is clearly required to realize the independent and controllable GaN based RF devices and complete circuit technology to promote the sustainable development of China's third generation semiconductor in the field of RF power.

In 2017, Beijing, Jiangsu, Shandong and Guangdong successively issued 62 relevant policies to promote the development of compound semiconductors.

Chinese mainland, the United States, South Korea and China Taiwan are the top five countries in the world.

Chinese patents account for 23% of the global total.

Wentai technology, for example, is one of the best gallium nitride suppliers in the world.

San'an optoelectronics Co., Ltd. has finished part of Gan production line layout.