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GaN Chargers You Should Know About

June 1, 2024

GaN Chargers You Should Know About

Gallium nitride (GaN) chargers can charge multiple devices at the same time, including laptops, tablets, headphones, mobile phones, etc. Compared with ordinary chargers, the biggest advantage is that it is powerful and easy to carry. GaN is not just a new material in electronics now, so how can its advantages be used in chargers?


Charging Principle
For daily charging, at first, household electricity is converted into high-voltage direct current, and a switching tube is used to convert high-frequency pulsating direct current; then use a transformer to integrate it into low-voltage alternating current; finally turn it into low-voltage direct current to charge the mobile phone. The switch tube of ordinary chargers is generally made of silicon (Si) material, and its disadvantage is that the frequency limit is at the 100,000 level. Using GaN material instead of Si, the switching frequency can be increased to millions. With it, the charger can be made smaller.

GaN Charger Advantages
GaN belongs to the third-generation semiconductor material with high hardness, low resistance, and high melting point. Compared with ordinary chargers, GaN Charger is smaller because the switching frequency is high enough to use a small transformer. At the same time, it is resistant to high temperatures and has low resistance. And it dissipates heat well during charging and the charging processes. Moreover, its prongs can be folded, and does not take up much space, making it easy to carry when going out. If you want to increase the voltage and power of ordinary chargers, you must make the charger larger. However, GaN chargers do not need to do that. Because they have strong conductive properties and will not affect conductivity if they are made smaller, and lighter.



1. According to port number
There are single-port GaN Chargers and multiple-port GaN Chargers. A single port can only charge one device at a time, while multi ports can connect more devices.

2. According to output power
GaN Charger with common output powers are 20W, 25W, 33W, 35W, 45W, 65W, 100W and 140W.

3. According to supported charging protocols
GaN Chargers support fast charging protocols, including PD3.0, PD2.0, QC3.0, QC2.0, FCP, SCP, and AFC.



1. Brand
When buying something, check the brand first, and the same goes for gallium nitride chargers. There are many kinds of gallium nitride chargers on the market. If you choose a good brand, the product quality, safety and after-sales service will be guaranteed, and you can feel confident when using it.

One of the advantages of the gallium nitride charger is that it can charge multiple interfaces at the same time. At this time, you have to consider your own needs, such as whether you have many devices that used greatly. If you only have one mobile phone or laptop, you can consider a single-port charger. If you have multiple devices, such as mobile phones, laptops, game consoles, cameras, etc., give priority to multi-interface chargers.

3. Fast charging protocol
The fast charging protocol determines whether to support the highest output power, that is, how fast the charging speed is. It should be noted that if you choose a 65w multi-interface GaN Charger, the charging of a single interface may reach 65w. If you switch to multiple interfaces for charging at the same time, the charging speed will be slower. Generally, the normal fast charging of mobile phones is between 20-30w. If it exceeds 40w, you need to activate the smartphone manufacturer's proprietary fast charging protocol, at this time, you can only choose the original charger.

4. Size
Compared with ordinary chargers, GaN is much smaller in size under the same power. The design of the product itself will also affect the size, which will ultimately affect whether it is convenient to carry. For example, some have rectangular surfaces with square sides, others have square surfaces with rectangular sides, and some have foldable prongs. So the chargers with same power, small size and light weight, are easy to carry.

5. Price
GaN Chargers have many advantages, but the disadvantage is that the price is a bit high. So just choose based on the features you value and the budget.



Q: Will GaN Charger damage the battery?
The answer is no. The GaN Chargers have the functions of intelligent regulation and automatic power-off of the load; it has over-voltage protection, over-current protection, over-attack rate protection, temperature protection, short-circuit protection, electrostatic protection and other functions to protect the batteries. What’s more, it can adapt to different systems, like Android and Apple systems. When the three ports are used at the same time, it can also intelligently divert traffic.
It is not recommended to leave the charger plugged in all the time, whether it is a GaN Charger or an ordinary one. Keep it plugged into the socket, and its internal bridge rectifier circuit, frequency transformer, resistors, capacitors, switching tubes and other components are all in a low-current working state, which will accelerate their aging rate and shorten their lifespan.

2. What is the difference between a GaN Charger and a PD charger?
PD Charger refers to a charger that supports the USB Power Delivery protocol, which can provide higher power power to the device through the USB interface, allowing the device to charge faster. The GaN Charger refers to an efficient fast charging technology made of gallium nitride semiconductor material. It provides a large amount of power to the device in a short period of time, thereby achieving fast charging.

The differences between PD Chargers and GaN Chargers in practical applications are mainly reflected in the following aspects:
1) Charging speed
GaN Chargers have great advantages in charging speed. They can usually achieve high-power charging such as 33W, 45W, and 65W. In particular, a 65W charger can fully charge a mobile phone within dozens of minutes. electricity, greatly shortening the charging time. While the charging speed of the PD Charger is relatively slow, and can only reach a maximum of about 33W.

2) Security
During the charging process of PD Chargers, the current is generally increased step by step to ensure the safety of the device. While the GaN Charger uses a method to maintain stable current, which is one of the important reasons why it can achieve fast charging. However, due to the large output current of the GaN Charger, incorrect use may cause damage to the device, so please pay attention to safety when using it.

3) Compatibility
The PD Charger has good compatibility and can be compatible with a variety of devices. It can automatically match the output voltage and current through the protocol to provide the most suitable charging power for the device. While GaN Chargers are relatively limited and can only be applied to devices that support this technology.

4) Cost
The production cost of GaN Chargers is higher because it uses high-end semiconductor materials. While the PD Charger is relatively cheaper because it uses the more popular USB PD protocol and has lower production costs. To sum up, both PD Chargers and GaN Chargers have their own advantages and disadvantages. When choosing a charger, you need to choose based on your needs and device compatibility.