What is fast charging of mobile phone? Fast charging, as the name implies, is fast charging, which stores more electric energy into the battery of the mobile phone in a shorter time. To speed up the energy transmission, either increase the charging voltage or increase the charging current. However, increasing the charging power will aggravate the heating, and excessive electric heating will easily lead to safety accidents.
To achieve fast charging, the charger, charging control chip and rechargeable battery need to work together, and the whole charging process can achieve the highest efficiency of energy conversion. During the charging process, the charger and the mobile phone need to communicate, and the charger will output appropriate voltage or current according to the charging needs.
At present, the mainstream fast charging schemes include QC3.0 of Qualcomm, PE protocol of MediaTek, flash charging of oppo and vivo, fast charging technology of Huawei and so on.
Why does fast charge use Type-C interface? In the past, the USB charging interface only had four wires VCC/GND/D+/D-. In fact, D+ and D- are used for mobile phone USB data transmission, and only VCC/GND is used for charging. The charger only outputs electric energy and will not communicate with the mobile phone.
Type-C interface is a brand-new USB interface. Type-C interface has added more interface wires, including 4 pairs of TX/RX differential wires, 2 pairs of USBD+/D-, 1 pair of SBU, 2 CCS, 4 VBUS and 4 ground wires. With so many pins, the Type-C interface can naturally achieve more functions. At this time, the mobile phone fast charging protocol came into being.
Can I charge quickly with the Type-C interface? The Type-C interface is just an interface. If you plug your mobile phone into an ordinary charger, it is not fast charging. Plug the Type-C interface into the mobile phone without fast charging function, and it is also impossible to realize fast charging.
The mobile phone with fast charging function has a built-in power management chip supporting fast charging protocol, which can intelligently monitor the battery state (including very complicated algorithms, and different manufacturers will have their own skills, characteristics and patents). The power management chip will send various instructions to the fast charging charger to obtain the required voltage and current, and then charge the battery with the highest efficiency.
Therefore, chargers with different fast charging protocols are not universal. For example, if you plug Huawei's fast charging charger into VIVO's mobile phone, you can't charge it quickly.
Welcome to pay attention to @ electronic product design scheme and enjoy the fun of sharing and learning together! Pay attention to me, become friends, and exchange and learn together. I believe everyone has found that in the era of fast charging, all the honors seem to be attributed to the type-C interface. Compared with Apple's ridiculous "basic version" fast charge, type-C fast charge always seems to be more exaggerated. Moreover, based on the actual experience, the fast charging function of a variety of type-C mobile phones led by Huawei will always make us look askance. The reasons for all this naturally come from the innate conditions, hardware advantages and protocol support of Type-C. ..
Congenital conditions To be honest, it is biased to exaggerate the function of Type-C. After all, it is too close, and its performance is definitely better than the previous interface.
In the basic design, type-C interface has a lot of advanced theoretical support. On the basis of a new round of fast charging operation, type-C definitely has more advantages, such as:
The transmission speed of 1 and 10Gbit/s-this value is twice that of the current Apple interface.
2. Slim design saves more space occupied by hardware and has better overall performance.
3, support the "positive and negative plug" function-no longer have to worry about finding the wrong socket direction.
4. USBPD can be supported through a current of at least 3A, which means that the type-C interface can provide the maximum power of 100W for our equipment.
Therefore, in terms of innate conditions, type-C has more convenient conditions than many interfaces, and the advantages of latecomers will definitely be more.
Hardware conditions and in terms of hardware conditions, type-C is obviously more advantageous. At the beginning of the design, type-C has four pins dedicated to power supply and grounding-this number is two on the Apple interface. This design also means that type-C can withstand higher voltage shocks.
According to the maximum current standard, the type-C interface can support the voltage of 20V, which naturally occupies the peak current in hardware.
At the beginning of the invention, the protocol supported type-C, which, like the sons of various standard setters, was loved by many manufacturers. Various manufacturers, whether Qualcomm, Huawei or Samsung, are constantly exploring the infinite possibilities of Type-C. Now the same is true for the high-voltage fast charging protocol supported by Type-C, which has created infinite miracles for it.
Look at all kinds of 40W or even 100W fast charge in the market. This kind of treatment of pro-son is really meaningless. How can other interfaces compare with it? In terms of electronic output, because it is selected as the contact port of the next generation USB4, type-C also has customized USBPD function, which means that it can support power output as high as100W, so the speed increase brought by it is naturally immediate.
So in my opinion, this type-C was originally born for the omnipotence of electronic interface, and since then, many technology giants have endorsed it. Type-C is the hope of fast charging in the future, and it is naturally full of advantages.
Type-C interface is fast charging, don't confuse it with another one! In daily life, some friends often confuse USB PD fast charging with Type-C interface, or call PD fast charging interface Type-C interface. In fact, this understanding is completely wrong. USB PD is a fast charging protocol, and Type-C interface is the shape standard of USB interface. They are not a concept at all!
Speaking of which, you may question Xiaoyou. Isn't the Type-C interface of Apple Macbook a PD fast charging interface? Why are the two different? Don't worry, listen to Xiaoyou slowly.
1. What is USB-PD fast charge? What versions are there? USB PD fast charging is a fast charging technical standard introduced by USB-IF Association, which is compatible with most private fast charging protocols and is the most widely used fast charging protocol at present.
At present, there are several versions of this fast charging protocol, including PD2.0/PD3.0/PD3. 1 and so on. Among them, the latest version of USB PD3. 1 is the biggest difference from USB PD 3.0 in that on the basis of outputting 20V, three groups of output voltage gears of 28, 36 and 48V are added, and the maximum output power of USB PD3.0 is increased to 100W, 180W and 240W.
Second, the relationship between USB-PD fast charging and Type-C At the beginning of the article, Xiaoyou has said that Type-C interface is a USB interface shape standard, and its highlights are slimmer design, faster transmission speed and more powerful fast charging and video transmission functions.
It should be noted that the Type-C interface supports 5V/3A charging at most by default, but it can support more charging power after adding USB PD protocol. For example, USB-C charger standard on Apple/KOOC-0/6-inch MacBook Pro 202/KOOC-0/model adopts USB PD3./KOOC-0/fast charging standard, and the output power can support/KOOC-0/40W at the highest.
However, the standard Type-C interface of all devices is not a "whole blood version" configuration. For example, Huawei's previous models did not have PD fast charging function.
In addition, devices with PD fast charging function are not necessarily Type-C interfaces, such as the Lightning port of Apple iPhone 12/ 13, and can also support PD fast charging protocol. (PS: Due to battery and technical limitations, Apple iPhone 12/ 13 only supports PD 20W charging. )
Therefore, USB PD fast charging Type-C interface should not be confused, especially when we buy PD fast charging accessories, we should not only look at the compatibility of the interface, but also look at the compatibility between the built-in PD fast charging chip and the supported fast charging protocol version.
First of all, thank you very much for answering this question here. Let me take you into this question. Now let's discuss it together.
Has little to do with the interface. At present, there are two mainstream fast charging protocols, high-voltage fast charging and low-voltage fast charging:
The representatives of high-voltage fast charging mainly include QC in Qualcomm and PEP in MediaTek, which generally support 9V/2A or 12V/2A at maximum. Mobile phones that support high-voltage fast charging can basically meet the demand of fast charging with a data cable that can reach 2A current, but the requirements for the charging head are relatively high. For example, products that support QC fast charging in Qualcomm need certification and relevant agreements, so the charging process will have different processes. If you don't recognize it, please roll back to 5V and charge slowly. Type-C is a connection interface of USB interface, and it can be plugged in either positive or negative. The size is about 8.3mm 2.5mm, and it supports USB charging, data transmission, display, output and other functions like other interfaces. Type-C interface is a relatively new interface, and it is estimated that it will be popularized soon, such as the new version of MacBook and LeTV mobile phone.
As early as 20 13 and 12, the promotion team of USB3.0 has published the rendering of the next-generation USBType-C connector, and began to prepare for mass production from August 20 14. The highlights of the new interface are slimmer design, faster transmission speed (up to 10Gbps) and more powerful power transmission (up to 100W). The biggest feature of Type-C double-sided pluggable interface is that it supports double-sided insertion of USB interface, which officially solves the worldwide problem of "USB can never be inserted correctly", and both sides can be inserted casually. At the same time, the USB data cable used with it must be thinner and lighter.
C-type feature
1. The highest data transmission speed reaches 10Gbit/ s, which is also the standard of USB3. 1. 2. The socket end size of Type-C interface is about 8.3mm 2.5mm slim design; 3. Support the function of "forward and backward insertion" which can be inserted from both sides, and can withstand 654.38+0.00000 times of repeated insertion and removal; 4. The standard specification connecting cable equipped with Type-C connector can pass 3A current, and also supports "USBPD" which exceeds the existing USB power supply capacity and can provide the maximum power 100W.
C-type appearance characteristics
1. Ultra thin
Thinner fuselage requires thinner ports, which is one of the reasons for the birth of USB-C. The USB-C port is 0.83 cm long and 0.26 cm wide. The old USB port 1.4 cm long and 0.65 cm wide is out of date. This also means that the end of USB-C data cable will be one third of the size of standard USB-A data cable plug.
2. There are no advantages and disadvantages
Like Apple's Lightning interface, the front and back of USB-C port are the same. In other words, no matter how you plug in this port, it is correct. Users don't have to worry about the advantages and disadvantages of traditional USB ports.
Main functions of type c
1. Come on
Theoretically, the highest transmission rate of USB-C port is 10Gb per second. However, Apple said that the USB-C port of the new MacBook has a maximum transmission rate of 5Gbps. The maximum output voltage is 20 volts, which can speed up the charging time. The USB-A model has a limit transmission rate of 5Gbps and an output voltage of 5 volts.
Become a generalist
The USB-C port of the new MacBook can transmit data and charge, and can also be used as a video output port to link external display devices. The only question is how Apple can satisfy users who want to do these three things at the same time.
3. Two-way
Unlike the old USB port, which can only transmit power in one direction, the power transmission of USB-C port is bidirectional, which means it can transmit power in two ways. Therefore, users can not only charge mobile devices with notebooks, but also charge notebooks with other devices or mobile power sources.
4. Backward compatibility
USB-C can be compatible with the old USB standard, but users need to buy additional adapters to complete compatibility. Apple said that not only will Apple officially sell adapters, but third-party companies can also authorize production.
Technical characteristics of type c
20 13, 14 February, the USB3.0 promotion team has published the rendering of the next-generation USBType-C connector, which has been ready for mass production since August 20 14. The highlights of the new interface are slimmer design, faster transmission speed (up to 10Gbps) and more powerful power transmission (up to 100W). The biggest feature of Type-C double-sided pluggable interface is that it supports double-sided insertion of USB interface, which officially solves the worldwide problem of "USB can never be inserted correctly", and both sides can be inserted casually. At the same time, the USB data cable used with it must be thinner and lighter.
To sum up, USBType-C has the following characteristics:
1. The highest data transmission speed reaches 10Gbit/ s, which is also the standard of USB3. 1.
2. The socket end size of Type-C interface is about 8.3mm 2.5mm slim design;
3. Support the function of "forward and backward insertion" which can be inserted from both sides, and can withstand 654.38+0.00000 times of repeated insertion and removal;
4. The standard specification connecting cable equipped with Type-C connector can pass 3A current, and also supports "USBPD" which exceeds the existing USB power supply capacity and can provide the maximum power 100W.
What's the difference between type-c and normal interface?
Compared with the traditional interface, type-c has the following highlights.
1 lies in slimmer design, faster transmission speed (up to 10Gbps) and more powerful power transmission (up to 100W).
2. The biggest feature of Type-C double-sided pluggable interface is that it supports double-sided insertion of USB interface, which formally solves the problem of "USB universal insertion".
The answers to this question shared above are all personal opinions and suggestions. I hope the answer to this question I shared can help everyone.
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What interface is type-c
Type-C is a connection interface of USB interface, and it can be plugged in either positive or negative. The size is about 8.3mm 2.5mm, and it supports USB charging, data transmission, display, output and other functions like other interfaces. Type-C interface is a relatively new interface, and it is estimated that it will be popularized soon, such as the new version of MacBook and LeTV mobile phone.
C-type feature
1. The highest data transmission speed reaches 10Gbit/ s, which is also the standard of USB3. 1. 2. The socket end size of Type-C interface is about 8.3mm 2.5mm slim design; 3. Support the function of "forward and backward insertion" which can be inserted from both sides, and can withstand 654.38+0.00000 times of repeated insertion and removal; 4. The standard specification connecting cable equipped with Type-C connector can pass 3A current, and also supports "USBPD" which exceeds the existing USB power supply capacity and can provide the maximum power 100W.
C-type appearance characteristics
1. Ultra thin
Thinner fuselage requires thinner ports, which is one of the reasons for the birth of USB-C. The USB-C port is 0.83 cm long and 0.26 cm wide. The old USB port 1.4 cm long and 0.65 cm wide is out of date. This also means that the end of USB-C data cable will be one third of the size of standard USB-A data cable plug.
2. There are no advantages and disadvantages
Like Apple's Lightning interface, the front and back of USB-C port are the same. In other words, no matter how you plug in this port, it is correct. Users don't have to worry about the advantages and disadvantages of traditional USB ports.
Main functions of type c
1. Come on
Theoretically, the highest transmission rate of USB-C port is 10Gb per second. However, Apple said that the USB-C port of the new MacBook has a maximum transmission rate of 5Gbps. The maximum output voltage is 20 volts, which can speed up the charging time. The USB-A model has a limit transmission rate of 5Gbps and an output voltage of 5 volts.
Become a generalist
The USB-C port of the new MacBook can transmit data and charge, and can also be used as a video output port to link external display devices. The only question is how Apple can satisfy users who want to do these three things at the same time.
3. Two-way
Unlike the old USB port, which can only transmit power in one direction, the power transmission of USB-C port is bidirectional, which means it can transmit power in two ways. Therefore, users can not only charge mobile devices with notebooks, but also charge notebooks with other devices or mobile power sources.
4. Backward compatibility
USB-C can be compatible with the old USB standard, but users need to buy additional adapters to complete compatibility. Apple said that not only will Apple officially sell adapters, but third-party companies can also authorize production.
Technical characteristics of type c
20 13, 14 February, the USB3.0 promotion team has published the rendering of the next-generation USBType-C connector, which has been ready for mass production since August 20 14. The highlights of the new interface are slimmer design, faster transmission speed (up to 10Gbps) and more powerful power transmission (up to 100W). The biggest feature of Type-C double-sided pluggable interface is that it supports double-sided insertion of USB interface, which officially solves the worldwide problem of "USB can never be inserted correctly", and both sides can be inserted casually. At the same time, the USB data cable used with it must be thinner and lighter.
To sum up, USBType-C has the following characteristics:
1. The highest data transmission speed reaches 10Gbit/ s, which is also the standard of USB3. 1.
2. The socket end size of Type-C interface is about 8.3mm 2.5mm slim design;
3. Support the function of "forward and backward insertion" which can be inserted from both sides, and can withstand 654.38+0.00000 times of repeated insertion and removal;
4. The standard specification connecting cable equipped with Type-C connector can pass 3A current, and also supports "USBPD" which exceeds the existing USB power supply capacity and can provide the maximum power 100W.
What's the difference between type-c and normal interface?
Compared with the traditional interface, type-c has the following highlights.
1 lies in slimmer design, faster transmission speed (up to 10Gbps) and more powerful power transmission (up to 100W).
2. The biggest feature of Type-C double-sided pluggable interface is that it supports double-sided insertion of USB interface, which formally solves the problem of "USB universal insertion".
Speaking of fast charging, you must understand the PD fast charging protocol? So what is the relationship between PD protocol and Type-C? Let's take you to find out.
The PD protocol of Type-C interface is finally recommended to everyone. The collections we bought at present basically support fast charging, and the most suitable and safest is the PDO output at full speed 18W(9V2A). Pay attention to the specifications. The maximum current should not exceed 3A.
I hope it helps you.
I'm glad to answer this question.
First, I think he uses a two-way plug, which has large power and fast transmission speed.
Second, the charging speed also depends on the voltage of the line. The higher the voltage, the faster the overcharge. For example, 1V is not as fast as 2V.
Third, the cable can, but also consider the plug. Similarly, depending on the number of volts, it mainly refers to the number of output volts, and now it is mainly 5 volts.
Fourth, it depends on whether the wire core inside the data cable is pure copper, the thickness of the wire and the number of wires.
The default 5V power supply of the Type-C interface is the USB interface before backwards compatibility. The new Type-C interface also includes four pins dedicated to power supply and grounding respectively, which can support the maximum transmission rate of 40Gbps.
Moreover, Type-C has more contacts, which supports the negotiation of greater charging power: the maximum voltage is 20V and the maximum current is 5A.
Because of protocol and hardware design problems.
Class c use
USB3.x
The number of contacts of Type-c interface is several times that of Micro USB interface, which greatly increases the current intensity it can bear. At the same time, Type-c adds the steps of mutual recognition, and can define itself as a charger or a powered device. In other words, USB Type-c naturally supports fast charging, and the loss of USB Type-c will be smaller at the same current, and it can support bidirectional charging.