In May of this year, the USB-IF Association released the latest USBPD31 fast charging standard, adding three extended output voltages of 28V36V48V , increasing the maximum output power to 240W; in the automotive market, Tiandeyu JD621 fast charging chip single-port maximum output power Up to 100W Model">100W Model">100W Model">100W Model">100W Model">100W Model">100W Model">100W Model">100W Model">100W Model">100W Model">100W Model"> 100W Model">100W Model">100W Model">100W Model">100W Model">100W Model">100W Model">100W Model">100W, can be used for three-port vehicle fast charger.

In May of this year, the USB-IF Association released the latest USBPD3.1 fast charging standard, adding three extended output voltages of 28V, 36V, and 48V, increasing the maximum output power to 240W; at the same time, the extended power range increased by 15V- 28V5A.15V-36V5A, 15V-48V5A three groups of adjustable voltage files.

The release of the PD3.1 standard has become a major update of the USB PD fast charging technology. Generally speaking, anything over 30W is considered fast charging. According to incomplete statistics, mobile phone manufacturers such as OPPO, Xiaomi, Huawei, VIVO, and Honor have launched about 300 million fast-charging mobile phones above 30W, and more than 12,000 mobile phones above 65W and 120W respectively. As an industry wind vane, Apple also brought 140W fast charging at the second autumn press conference this year, and the domestic brand Transsion directly launched 160W ultra-fast charging overseas.

Fast charging has gradually matured in the market. Fan Guangyao, deputy manager of Tiandeyu's marketing project, said that there are two main trends in fast charging systems. One is the gallium nitride device charger, which is characterized by high frequency, small size, high efficiency and high power density. ; Second, in the fast charging protocol chip, it is manifested as multi-port output, multi-function protection, and intelligent deployment of power. High protocol compatibility and high adjustability, PD3.1 protocol power application exceeds 140W.

For the fast charging market, Tiandeyu has launched a variety of multi-port fast charging protocol chips such as FP606AC, JD6621.JD6622, among which FP6606 has been used in Zimi's mobile power supply. It is worth mentioning that JD662 is a USBPD3.1 fast charging protocol chip with built-in ARM0+.64KFlash.8KBSRAM, compatible with multiple protocols, and supports intelligent deployment of power. Output overcurrent protection, etc. It is understood that the product will be mass-produced around the middle of next year.

Fast charging is not only a technology upgrade for the mobile phone market, but also for the automotive market. Judging from the current development trend, it is mainly to develop in the direction of more output interfaces and greater power. In the vehicle market, Tiandeyu JD621 fast charging chip has a maximum output power of 100W per port, which can be used for three-port vehicle fast chargers.

Facing the automotive market, fast charging products face challenges in AD5543BR chip design and mass production. Taking gallium nitride fast charging as an example, since gallium nitride is a planar structure, it is easier to integrate than the vertical structure of silicon, but Huang Xiucheng, senior application director of NanoMicro Semiconductor, also said that the heat dissipation performance in the packaging process is the core challenge, and heat treatment is still It is the disadvantage of gallium nitride power chips.

For the fast charging protocol chip, Fan Guangyao, deputy manager of Tiandeyu's marketing project, believes that in addition to the application of multi-port output, it must also have multi-function protection and intelligent deployment power. For example, in a 120W fast charging application, a single port can provide 120W of power output. In the multi-port output state, at least a stable output of 65W per port can be guaranteed, and real-time power deployment of other output ports can be performed, thereby improving the adaptability of chargers and new products, achieving high power output, and improving user experience.

With the rapid deployment of upstream manufacturers of the USB PD3.1 fast charging standard, fast charging products will gradually become popular in the future. Nanowei said it is preparing for the next-generation PD protocol, which will have twice the power of 100-120W. So when will PD3.1 products become popular in the market? Industry insiders believe that the USB PD3.1 fast charging standard will be launched soon, and it will take time from product project approval, production, testing to final mass production. It only takes one quarter or even more testing stages. Quantities are expected to start in the middle of next year.