What is the QC3.0 logo often seen on the charger?

In fact, QC is the abbreviation of QuickCharge, which is a fast charging solution launched by Qualcomm, and QC3.0 is the third-generation fast charging solution of Qualcomm.

It is said that in the NOKIA era, it is not a problem to use an 800mAh battery for two or three days, so a 5V0.5A charger is enough, and it can be fully charged in two or three hours. If Nokia really rules the planet, it will not be as fast as QC. What's the matter.

After 2010, large-screen smart phones represented by Android became popular, and the battery capacity has doubled several times. 2000mAh has become the standard configuration (currently the highest has broken 6000mAh). 5 minutes", so the charging power must be increased.

How much does it improve? Let’s have a 5V1A first.?But it is still not enough, USB-IF stood up and said: "Try 5V1.5A." It was still too small. At this time, Qualcomm said: "We want to use 5V2A." So the QC fast charging solution was released.

The first generation of the QC fast charging solution is called QC1.0, which increases the voltage and current to 5V2A.?But as the screen gets bigger and bigger, the body gets thinner and thinner, and the battery life can't keep up.?The fast charging time of QC1.0 is still long, and then QC2.0 and QC3.0 appeared one after another.

The current mainstream solution for fast charging is QC3.0.?The biggest feature of QC3.0 is that the voltage management mechanism is "INOV" (Intelligent Negotiation for Optimum Voltage), which allows the input voltage to start from 3.6V, with a unit of 0.2V (200mV), combined with real-time battery Fine-tune factors such as temperature, conversion efficiency, and power, and gradually increase or decrease within the allowable input voltage range (9V or 12V), unlike QC2.0, which can only perform "either one or two" in 5V/9V/12V "The violent choice.

The advantage of this is that QC3.0 can greatly reduce the loss of the DC/DC conversion circuit, thus effectively alleviating the heating problem during fast charging.?According to Qualcomm, QC3.0 can increase efficiency by 38% compared to QC2.0, increase charging speed by 27%, reduce heat generation by 45%, and?charge a typical mobile phone from zero to 80% in about 35 minutes.

Since QC3.0 is so powerful, how can we experience it??When we buy a charging head, we only need to read the packaging instructions or have the QC3.0 logo. Of course, we must also ensure that both the charging head and the mobile phone support QC3.0.

If you have a car, you can also use the QC3.0 car charger, so that even if the driving time is short, the mobile phone can quickly obtain a considerable amount of power.

However, it doesn’t matter if your mobile phone does not support fast charging, the QC3.0 charger will automatically match the maximum current for fast charging.