Disassembly report: Nubia 65W 2C1A deuterium front gallium nitride charger

2024-09-25

At this year's Red Devil New Product Conference, Nubia released two game phones, the Red Devil 7S and the Red Devil 7S Pro, as well as two personalized fast charging chargers. This time, one 65W GaN fast charge with deuterium front is disassembled. This charger is designed with a transparent cover plate, which can directly see the internal interfaces and components, bringing different visual effects.

This charger has three 2C1A output interfaces, of which two USB-C interfaces support power blind plug, any interface can output 65W, and dual port output supports automatic power distribution. The charging head network will disassemble this charger to see the internal materials and workmanship.

The charging head network has also disassembled Nubia Dabai 20W dual port gallium nitride charger, Nubia Dabai 65W dual port gallium nitride fast charger, Nubia 120W 3C1A deuterium front gallium nitride charger (Transformers war damage version), Nubia 30W gallium nitride fast charger, Nubia 22.5W sugar fast charger and other products. Welcome to check.

Nubia's 65W charger uses a transparent panel design on the side to see the internal components of the charger, bringing different use experiences. The charger adopts folding pins, which are easy to carry, and filled with glue to improve heat dissipation performance and reliability. The two USB-C interfaces support blind plug and PPS fast charging, which can meet the fast charging requirements of laptops and mobile phones.

The charging head network learned from the disassembly that Nubia's 65W charger is equipped with two channels of PI highly integrated master chips and two transformers, one large and one small, to form a 45+20W two-way switching power supply. The output protocol chip uses Yingjixin IP2738 for three port protocol control, and uses Weizhao semiconductor MOS tube for parallel connection and interface control of two switch power outputs, which is different from the previous secondary voltage reduction scheme.

By using two power supplies for parallel output, the scheme of voltage conversion without additional step-down circuit reduces the voltage conversion link, and the overall efficiency is higher. In the charger, Yongming and emerald capacitors are used for filtering. The protocol chip data pin is connected to the ground in parallel with the voltage stabilizer for overvoltage protection. At the same time, small plates are combined and welded to make full use of the internal space. The overall material and workmanship are very solid.