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Why does the type c interface charge so fast?

2021-09-15

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Nowadays, not only the charging interface of many mobile phones is changed to type c interface, but also type c interface is becoming more and more popular on computers and U disks. Compared with the coexistence of various interfaces in the past, when the mobile phone and computer are out of power, it is embarrassing to find a suitable charging cable everywhere. The unified interface is simply too friendly!

Why do people like the type c interface so much? The common identification of the type c interface is that the charging is faster and does not distinguish between positive and negative. After all, who can resist the efficiency of "five minutes of charging, two hours of talk"?

So, why doesn't the type c interface distinguish between positive and negative? Does it really make charging faster?

Next, let's learn more about type c.

 

Type c is an interface standard for electronic equipment, also known as USB-c. USBIF (USB Implementers Forum) released the USB type c interface standard, which has gradually developed into a unified electronic interface with its own technical advantages.

With the development of network technology, mobile phones are more and more dependent on the network. The faster the network speed, the more problems the phone needs to deal with at the same time, and the greater the power consumption. At present, if you want to reduce the power consumption of mobile phones, you can start from two aspects, one is the battery update of the mobile phone, and the other is the charging technology.

However, there is no new breakthrough in mobile phone battery market technology. In order to change the problem of fast power consumption of mobile phones, it is particularly important to develop fast charging technology.

At present, there are two common fast charging technologies: one is to achieve fast charging by increasing the output voltage of the power adapter (commonly known as the charger head) and increasing the charging power; the other is to output a large current through the charger head to increase the charging power to achieve fast charging.

In recent years, domestic mobile phones using low-voltage fast charging technology have developed rapidly, and low-voltage fast charging technology has gradually occupied the market. Compared with the two charging methods, the low-voltage and high-current charging method can achieve higher efficiency at the same power. However, traditional cables (charging cables) and interfaces cannot stand with large currents and cannot guarantee safe charging.

 

In order to achieve fast charging on the premise of ensuring charging safety, the fast charging charging head needs to convert the alternating current in our life into a specified voltage and current. At the same time, specialized fast charging cables and interfaces are required to transmit voltage and current. The number of contacts of the Type c interface is several times that of the traditional interface, which makes it withstand much more current than the traditional charging interface, and is more suitable for fast charging technology. Moreover, an E-marker chip that can recognize each other is added to the chip of the type c interface, which ensures that the type c interface can automatically identify the charging and receiving devices, ensures the safety of charging, and supports two-way charging.

As an important transmission link of fast charging technology, the type c interface not only realizes fast charging, but also provides a lot of convenience for people. For example, there is no need to worry about inserting the reverse interface, and there is no need to find various adapter interfaces, so the popularity of the type c interface is not so fast. It doesn't make sense.