USB Association announcement: PD 2.0 Silicon and PD 2.0 terminal product certification will be phased out
USB-IF will gradually phase out PD 2.0 silicon (Silicon) certification, will stop USB PD 2.0 silicon (Silicon) certification project on January 25, 2020, and stop PD 2.0 terminal product certification on July 25, 2020. In the future, there will be unified specifications on the market and only products that support the PD 3.0 specification will be produced and distributed. Sinodec Industrial Co., LTD., As a Chinese factory specializing in the production of USB cables, will pay close attention to the latest information on USB PD fast charger cable.
At present, commercial fast charging technology has been mass-produced. In terms of power, Huawei 40W and OPPO 50W are the first echelon, and the second echelon is between 18-30W. Huawei, Xiaomi, OnePlus, OPPO, vivo and other manufacturers As a representative, but there are still many mobile phones that can not even reach 18W charging power, or the default charging accessories do not support fast charging, mainly referring to Apple, Samsung, Sony and other international manufacturers. Currently, there are types of fast charging solutions on the market. Diversified, different standards: QC and PE fast charge dominated by chip vendors such as Qualcomm and MediaTek, as well as VOOC and SuperChange fast charge dominated by mobile phone manufacturers such as OPPO and Huawei, as well as those promoted by the USB-IF Association PD fast charging. For the advantages of the PD protocol, we can borrow a description from Baidu: PD is PowerDelivery, which focuses on the power transmission process of two or more devices, even a smart grid based on USB interface. The power transmission can be Bidirectional, even networking, can have a system-level power supply strategy, while QC is QuickCharge's only focus on fast charging issues, and power transmission is unidirectional , Does not have power networking capabilities, does not support other functions than power supply, but in general, can be unified into two types of high-voltage low-current and low-voltage high-current fast charge, currently Type C PD fast charge part has been promoted by manufacturers The comprehensive version is promoted and released. After the Chinese New Year, we will release a free fast charge sample gift channel.
The USB-PD protocol is a general standard introduced by the American USB-IF Association to promote industry standards to meet the needs of modern fast charging; this standard covers the previous proprietary agreements of Qualcomm, MTK, Huawei, and OPPO At the same time, it has been standardized and supplemented, making it a complete agreement. Industry giants such as Google and Apple are also accelerating support and specification for this standard, and this agreement has been recognized by the Tyre Laboratory of the Ministry of Industry and Information Technology of China. In the future, there is bound to be unlimited development space, and the ultimate benefits will be returned to all our consumers. Now it is obviously at the beginning of a "revolution", so it may have a bad impact on us in the short term, but To know that it will eventually bring us benefits, according to statistics, as many as 30 models on the market have adopted PD fast charge, including Huawei, Samsung, Xiaomi, Nokia, Sony, Meizu, Razer and many other mainstream brands Mobile phones have also incorporated the PD fast charge protocol into the charging configuration of mobile phones. Driven by it, there will be more brands of mobile phones supporting PD fast charge in the future. The unification of PD fast charge is undoubtedly an industry trend. There is no doubt that the popularity of USBPD 3.0 is a good thing for ordinary users. All the fast charging technologies are developed by the manufacturers themselves. The conditions for realizing fast charging are harsh. One-to-one correspondence between mobile phones, chargers, and data cables is indispensable. The popularity of USBPD 3.0 can get rid of this dilemma. All mobile phones of different brands 4. Different brands of fast charge chargers and data cables will be universal. There is no need to find chargers and data cables all over the house. It is the same reason as yesterday ’s popularization of lightning interfaces. Unfortunately, the standard customization right is temporarily in the West. in the pocket.
Compared with PD 2.0 for charging function, the biggest adjustment of USB PD 3.0 is to support the Programmable Power Supply (PPS) charging as shown in the figure above. PD 2.0 only supports fixed voltage. PD 3.0 can achieve a maximum range of 3.3-21.0V direct charging. The minimum adjustable voltage amplitude is 20mV, the minimum adjustable current amplitude is 50mA, and Programmable Voltage and Programmable Current Limit functions can be realized, so this charging standard has very good compatibility; in addition to improving charging efficiency, it can also reduce the impact The degree of heating of the electrical device during charging, of course, there are other changes to enhance the product's forward-looking cooperation with the future market. For example, it can allow the two parties to connect more clearly to each other's power status, so as to coordinate the power supply strategies of both parties. The establishment of a low-voltage intelligent power supply network is a great experience, and the digital certificate function is estimated to be the most important function and purpose of the association's upgrade. All TYPE-C products must be issued by the USB-IF organization using private keys Digital certificates can be unimpeded, and products without certificates may not be used by other manufacturers TYPE-C products are accepted, does it feel familiar, or is it the same routine as Apple MFI, this feature has very positive significance for companies that have already been certified by IF. Some maliciously reduce the quality and only require fewer competitors. Of course, you can also avoid unqualified TYPE-C interface devices, which damage normal devices because of quality problems. In enterprise information security applications, companies can also issue security certificates to make non-enterprise internal USB devices inaccessible. This will be more secure than the existing USB encryption technology, because before the security certification is completed through the CC line, the storage medium and the system are physically isolated, the times are progressing, and product upgrades will gradually develop on the road to secure applications.