NuVolta NU2205 200W Charging Chip
According to domestic media reports, recently China’s semiconductor company NuVolta Technologies launched the second generation of charge pump fast charging chip products, the model “NU2205”.
According to the official introduction, NuVolta NU2205 is currently the industry’s highest power single-chip charge pump fast charging chip, charging power up to 100W, but also China’s only support for dual-cell 4:2 charge pump fast-charging architecture of the chip.
NuVolta said that the successful development of this chip will help break the monopoly of foreign manufacturers in the dual-cell fast charging industry.
What’s more, the official introduction of the chip will also be able to provide cell phones with a 200W dual-cell fast charging solution, which is currently the highest power fast charging available on the market.
According to the Digital Chat Station, the Domestic fast charging chip also has a breakthrough, NuVolta NU2205 can do a single core single charge pump 100W, double core double pump high-efficiency 120W, the double core three pump 200W. wired is not yet limited, next year continue to let fly self.
In addition, the chip not only achieves absolute leadership in speed but also ensures low heat generation throughout the process. Officially, the temperature rise corresponds to 44.9°C/46.8°C when charging 2 batteries at 10A and 20A high current at 25°C ambient temperature with 16V input.
The charge pump technology is a special DC-DC (DC-DC) voltage conversion method, the use of capacitive energy storage, fast on and off, to achieve half the output voltage. This way compared to the traditional switching power supply method, with no inductive components, the conversion efficiency can reach more than 95%, but in practical applications also need to be used in combination with switching power supply.
The NU2205 has an innovative internal structure that improves efficiency and allows adjustment of operating frequency. The maximum efficiency can reach 98% in 4:2 operation mode and up to 99.2% in 2:2 mode 2 battery charging efficiency under 10V adapter input.
In addition to the 4:2 dual charge pump mode, this chip also supports a 2:2 dual cell direct charging mode, where the charging efficiency is up to 99.2%. In applications where high power charging heat continues to increase, it offers the possibility of pulse switching between 4:2 and 2:2 modes to reduce system heat generation. Due to the innovative design, the NU2205 can also support both 2:1 and 1:1 single-cell fast charging modes.
Officially, the temperature rise corresponds to 44.9°C/46.8°C for two batteries charged at 10A and 20A high current at 16V input at 25°C ambient temperature.
NuVolta NU2205 chip can output a stable 10A current for a single one and a stable 20A current for two. The reason for using two chips is to reduce the loss and break through the single cell fast charging limit to 120W or even higher.
The NU2205 uses a 4:2 charge pump architecture that is optimized with an integrated FET to achieve a 50% duty cycle. This allows the cable current to behalf of the current delivered to the battery, reducing charging cable losses and limiting temperature rise in the application. The dual-phase architecture reduces input capacitance requirements while reducing output voltage ripple. In addition, this chip supports wireless charging schemes and has up to 34 layers of comprehensive protection.
It is worth mentioning that the official NuVolta used the Xiaomi 11/11 Pro body picture when showing this chip, which seems to be a side-by-side proof of the partnership between the two sides, and Xiaomi is expected to debut the mass-produced version of NuVolta 200W charging chip technology.
It is reported that as early as May Xiaomi officially announced that the Xiaomi 11 Pro-Magic Edition broke two world records. Among them, wired charging to do 200W power, 8 minutes to charge 100%, claiming to pull wired charging into the 10-minute era for the first time.
At that time, Xiaomi did not officially announce the specific realization of the program, and now it seems that a high probability is equipped with a dual-cell program equipped with NuVolta NU2205.
