【Mobile China News】The revelations about Xiaomi Mi 12 have been "stacked like mountains", such as 6.28A+ screen, a new generation of Snapdragon 8 mobile platform, a new "Xiaomi image brain" and image architecture. On December 24, Xiaomi announced the heavy news - the first self-developed charging chip surging P1. Previously, Xiaomi has revealed that The Xiaomi Mi 12 Pro is equipped with a new 120W surging second charge technology, what kind of story is hidden behind this 120W second charge?
Surging P1
In 2019, Xiaomi released the first generation of fast charging models, in 2021, Xiaomi MIX4 is equipped with a 120W rapid second charging system, in just three years, Xiaomi's wired fast charging speed has increased by 7.4 times. In 2019, Xiaomi set fast charging as an important strategic direction, established four major research and development centers, and set up a TMG charging technology committee, and applied for more than 800 patents in three years. At present, mobile phones equipped with 120W wired charging almost all use dual-cell systems, but they reduce the utilization of internal space of mobile phones.
Xiaomi Mi 120W single cell solution
Xiaomi Surging P1 achieves the best balance between endurance and charging performance, and realizes a single battery cell 120W wired second charge. The chip takes over the traditional 5-charge pump complex structure, converts the high-voltage power input to the mobile phone more efficiently into a large current that can be directly charged to the battery; the 4:1 ultra-high efficiency architecture with adaptive switching frequency, the resonant topology efficiency is as high as 97.5%; it supports 1:1, 2:1 and 4:1 conversion modes, the forward 4:1 can support 120W surging second charge, and the reverse 1:2/1:4 mode can support high-power reverse charging.