We are all paying attention to the development of mobile phones, but for a long time we have neglected the innovation of many important components around them. Just like the USB cable, there is rarely a technology or transmission standard that is as closely related to our lives as the Universal Serial Bus (Universal Serial Bus), and even to the point where it is not impossible.
No matter how insignificant and worthless you think it is, its role cannot be underestimated. Data transmission and power supply all need to rely on it, and the transmission speed and current load value have been continuously increasing since its development. What we are talking about today is the latest form and concept product of data cables and USB cables-Type-C. After the MacBook, which is also known as the "Xiaobai" iteration, once again lamented Apple's work, many people actually shifted their attention to its data line. That's right, the MacBook is no longer equip with the familiar magnetic power connector, but Type-C.
What are the advantages of Type-C?
The most intuitive advantage of Type-C is that it allows you to completely get rid of the trouble of plugging in, and no more damage to components caused by incorrect plugging or mistakes.
In fact, no matter whether it is the USB 2.0 or USB 3.0 standard, there is not much help and change at present. For smart phones, the data cable is mostly used as a tool to charge the device, such as offline movies, online downloads, etc. It helps us to gradually get rid of the era of data cable transmission. For some environments and needs, it is undeniable that the transmission speed of USB 3.0 will indeed make you more enjoyable. It is all these years, and there is no need for the speed difference between 2.0 and 3.0. Popularize it, "time" can prove everything.
Just like the transition from iPhone4S to iPhone5 at that time, at that time we were not full of offices to find friends with iPhone5 mobile phones and Lightning data cables. The same is true for Type-C. Friends who have Type-C interface devices around must have had trouble finding Type-C data cables and unable to charge them.
What is the relationship between USB Type-C, PD and USB 3.1?
Although the industry has talked about USB Type-C, PD, and USB3.1 for so long, few articles can really explain what these three are, what are the differences, and what are the connections.
1. What is the difference between USB Power Delivery and USB Type-C?
USB-Power Delivery (USB PD) is a protocol specification that supports up to 100W power transmission and data communication in one cable. USB Type-C is a brand-new specification for positive and negative USB connectors that can support a series of new standards such as USB 3.1 (Gen1 and Gen2), Display Port and USB PD. The USB Type-C port can support up to 5V3A by default. If USB PD is implemented in the USB Type-C port, it can support the 100W power (5V20A) defined in the USB PD specification. Therefore, having a USB Type-C port does not mean that it supports USB PD.
no. The USB Type-C specification is independent of the USB3.1 Gen1 and Gen2 specifications. We can use the traditional TypeA and TypeB interfaces to support Gen1 or Gen2. The USB Type-C specification is a brand new specification made by USB-IF, which supports up to 100W power transmission and positive and negative insertion. The USB Type-C connector can be designed as Gen1 or Gen2.
3. What is the difference between USB-PD 2.0 and Qualcomm’s QC?
USB-PD 2.0 is a protocol developed by USB-IF, which can provide a power supply mechanism with a power of up to 100W (20 V, 5 A) between USB devices. It can also support both USB and non-USB data in the USB Type-C port. signal. It allows Host and peripherals to dynamically negotiate the direction of power supply.
Qualcomm® Quick Charge™ is a proprietary charging protocol developed by Qualcomm. A customized charger that supports the Qualcomm Quick Charge protocol is used to charge devices that also support the protocol. Quick Charge 2.0 provides a maximum of 60W power, but unlike USB-PD, it cannot support power supply and data transmission at the same time, nor does it support dynamic selection of the power supply direction during charging. Please refer to the USB-PD 2.0 specification for details.