Recently, the charging head network has obtained a mcdodo mcdodoo 100W gallium nitride charger prototype. The charger is equipped with 2c1a interface. Both C ports support 100W PD fast charging. The overall compatibility is very good and the performance is very strong.

Charging head network learned that this charger adopts PFC + LLC power architecture design, and the synchronous rectifier controller adopts ws2995 of Shenzhen winsemi Wenxian microelectronics. This is the first batch of LLC synchronous rectifier controllers in China, which has achieved a breakthrough in the industry from scratch and is of great significance.

It is worth mentioning that not only LLC synchronous rectifier controller, Wenxian micro also correspondingly launched ws2699, ws2862a and other highly integrated and high-performance LLC controllers and PFC controllers, which are suitable for the design of LLC power supply with high efficiency and high reliability, and can be used for medium power and high-power disconnector power source applications.

Shenzhen Wenxian Microelectronics Co., Ltd. is an old integrated circuit design company in Shenzhen, a national high-tech enterprise and a leading solution provider of charging path management system. Led by technology, the company has three major R & D centers nationwide, with R & D personnel accounting for more than 60%. The core team members have at least 10 years of experience in well-known enterprises in Ti, MPs, STMicro, Infineon and other industries.

After receiving the investment of world advanced integrated circuit Co., Ltd., Wenxian microelectronics has become a light IDM company, which can ensure to provide customers with sufficient production capacity, stable delivery time and high-quality product solutions. Wenxian microelectronics has a strong supply chain system and stable head customers. At the same time, it also has the world's most advanced highly integrated UHV process platform, MTP built-in controller platform, high anti surge UHV process platform, SGT and Gan power device process platform.

Through the disassembly of the charging head network, it is found that the 100W charger of McDonalds has built-in NXP tea2016aat + Wenxian micro ws2995 high-performance LLC architecture, and the PFC level adopts innoseco gallium nitride power chip; The three interfaces at the output end adopt three independent step-down circuits and adopt a full set of British core scheme. Among them, two usb-c interfaces share a two-way protocol chip of yingjixin ip2738, which respectively controls two-way yingjixin ip6550 for Synchronous Step-Down output, and the usb-a port uses ip2723t with ip6550 for Synchronous Step-Down output.

The layout of the components on the PCB board is compact and orderly, and the top of the primary electrolytic capacitor is covered with an insulating cap. Large area brass heat sink is set on the front and back of PCB to ensure the heat dissipation performance under high-power charging state. In addition, the input end is filtered by Yuguang electrolytic capacitor, and the output end is filtered by solid-state capacitor, and the output is pure.