Recently, most of the cars launched by new energy vehicle manufacturers are equipped with front-loading car charging, which can enjoy fast charging while driving. However, many old cars do not have built-in charging ports, which is very inconvenient for long-distance travel. To this end, Xiaomi aimed at this market and launched the first 100-watt car charger. The USB-C port of this product has 90W private fast charging, supports 33W PD fast charging and 33W UFCS fusion fast charging, and the USB-A interface is 5V2A output, which meets the charging needs of Xiaomi mobile phones and other brands of mobile phones.
When the charging head network recently disassembled Xiaomi's 100-watt car charging, it was found that its USB-A port uses Yingjixin IP6523S to achieve step-down output, and the following introduces this chip for you.
Xiaomi**100W car charger adopts the same styling design as the first generation, with an integrated plastic shell and a matte surface treatment against fingerprints. The fuselage is black throughout, and there is no imitation anodic spraying on the surface of the shell, which makes the whole look more profound. The top surface of the fuselage is equipped with 1A1C dual output interfaces, and there is also an indicator ring design on the edge.
In the case of simulated 14V DC input, the USB-C port supports UFCS and QC3 using ChargerLab Power-Z KM003C0、pd3.0, DCP and Xiaomi private charging protocol. The other USB-A port supports the DCP charging protocol. In the case of analog 24V DC input, the detection results of USB-C port and USB-A port are consistent with those of 14V DC input.
After a brief understanding of the appearance parameters, the charging head network continues to introduce its built-in Yingjixin power chip.
The USB-A port step-down chip comes from Yingjixin, model IP6523S, and uses ESOP8 package. This is a synchronous step-down converter with an integrated switch, and the automatic identification function is integrated into the chip, providing a complete solution for charging equipment such as car chargers and plug-in rows. IP6523S supports 9-32V input voltage, fixed output voltage 5V, supports 34A output current.
IP6523S also supports line compensation and soft start functions to effectively ensure the stability of the power supply. At the same time, the chip integrates input over-voltage and under-voltage protection, supports output over-current, short circuit, over-voltage and under-voltage protection, and cuts off in time when an abnormality occurs to protect the safety of the whole machine.
In addition, it is worth mentioning that the protocol chip built into this car charger also comes from Yingjixin, but it is customized for Xiaomi, and the chip is silk-screened with the logos and C2 words of Xiaomi and Yingjixin. The chip helps this device support Xiaomi's private fast charging, UFCS, PD and other fast charging protocols.
Charging head network understands that Shenzhen Yingjixin Technology Co., Ltd. is a company focusing on high-performance, high-quality digital-analog hybrid chip design, and its main business is the R&D and sales of power management chips and fast charging protocol chips. Yingjixin's chip products have the characteristics of high integration, high customizability, high cost performance and low substitutability, which can shorten the research and development cycle of customers' finished product solutions, simplify the production process of customers' products, and improve product yield and reliability, so as to help customers optimize costs and meet diversified needs.
Xiaomi's car charger has two built-in Yingjixin power chips, one of which is a customized chip for Xiaomi, which is used for USB-C port. The other is an IP6523S synchronous step-down chip, which is used for 5V output of USB-A port. The chip has a built-in power MOS, a wide input voltage range, support for the DCP protocol, soft start and line compensation functions, and multiple safety protections to avoid device abnormalities.
This chip has simple peripherals, simple application and high conversion efficiency, which is very suitable for equipment applications with low power such as smart sockets, smart plug-in boards, car chargers and 5V small household appliance adapters.