When it comes to Type-c and fast charging connectors, we have to mention MicroUSB and fast charging. When the battery life of the mobile phone is not strong, increasing the charging speed is a good solution. After studying physics, everyone knows how to increase the charging speed. The key is to increase the charging power. Power (W)=current X voltage, the charger first steps down the mains 220V to 5V and outputs it to the MicroUSB interface of the mobile phone, and then the internal circuit of the mobile phone is stepped down to about 4.3V to charge the battery. There are two reductions. pressing process.
Before the output voltage of the charger was 5V, everyone was thinking about how to increase the current; but when it reaches 5V2A, the bottleneck will come: if the current is further increased, it will inevitably lead to a large number of MicroUSB interfaces and data lines being overwhelmed. The current general MicroUSB interface and Our USB data cable can only guarantee safe and efficient transmission under the current of 2A. If the current exceeds 2A, the hardware can't stand it. What should I do? At this time, Type-c appeared. The number of contacts of the Type-c interface is MicroUSB The interface is several times larger, which greatly increases the current strength it can withstand. At the same time, Type-c adds the step of mutual recognition, which can define itself as a charger or power supply device. That is to say, USB Type-c naturally supports fast charging, and the same The loss of USB Type-c under current will be smaller, and it can support two-way charging. Although Type-c naturally supports fast charging connectors, it does not mean that Type-c is used. It must support fast charging, and fast charging connectors do not necessarily need to use Type-c. -c interface. Due to cost and heat dissipation considerations, some manufacturers only use Type-c and do not support fast charging. Since 2018, mobile phone fast charging has gradually increased from 18W to 40W or even higher 65W. This year, the mobile phone industry is expected to enter 100W The era of fast charging.
Fast charging mobile phones and fast charging connectors, if you use non-fast charging data cables, there is no fast charging effect. The material and quantity of the core wires of the data cables will affect the maximum current passing through the data cables, which in turn affects the charging power. Therefore, when choosing a data cable At this time, you should choose a data cable of pure copper core material, and the number of multi-core cables. Generally, the fast charging data cable is designed as a 5C wire, and the inner core is protected by a braided structure. Red represents the design. It is the positive electrode of the current, which ensures the transmission of current. The thickest data lines currently use 19AWG conductors. If it exceeds this AWG number, it is difficult to solder. The pads are easy to fall off. The white and green are positive and negative data lines to ensure data DATE transmission. The blue is designed as a CC interface and is responsible for supporting PD fast charge.