Flagship-level Android smartphones have begun to spreadTYPE-C fast chargeInterface. This interface can cooperate with the fast charging protocol to realize fast charging of mobile phones. The charging power ranges from 10W to 18W, and even some manufacturers have realized 65W fast charging. This greatly improves the charging efficiency. The history of charging for 8 hours or even 12 hours is gone. Once again, the emergence of fast charging has facilitated people's experience with mobile phones. How does Type-C achieve fast charging? What is its working principle?
The most direct understanding of TYPE-C fast charging is that people do not need to distinguish the direction of the plug when charging. In addition, careful friends may notice that Type-C has more pins. The TYPE-C fast charging interface has 4 pairs of power cables .Type-C supports 5V\/3A charging specification by default on the hardware. With the support of the charging protocol, the theoretical maximum output power can reach 100W. It can be seen that TYPE-C fast charging has the advantages over MicroUSB.
Nowadays, mobile phone chargers are made like a work of art. Not only are they small in size, but they are also beautiful in appearance. They are no longer black and confused idiots in the era of feature phones. Mobile phone chargers can convert alternating current into direct current, which inevitably involves voltage transformation and rectification process, but what about the small size? The first thing to do is to reduce the size of the transformer. The current mobile phone charger uses a high-frequency transformer, which is small in size and high in efficiency. This is the premise of the small size of the charger. In addition, PWM control chip, synchronous rectification chip and fast charging protocol chip are also required. Therefore, a complete mobile phone charger that supports fast charging includes the following parts: rectifier (implementation of rectifier bridge), high frequency transformer, synchronous rectification chip, PWM control device, fast charging protocol (USB-PD, QC, PPS, etc.). Charging protocol chip and TYPE-C interface.