工业最高100W电荷泵IC

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Includes a fast-charging architecture for ultra-fast charging in flagship smartphones and other mobile devices

在这个5G时代,智能手机消耗了重要的功率,从而产生了对快速充电的高需求。2017年推出的第一代快速充电IC将智能手机充电从10W提高到40W。但是,随着智能手机上强大的应用程序和游戏的增加,电池需求一直在增加,该应用程序和游戏要求更高的充电功率高达60W,甚至120W,以缩短充电时间并冷却充电温度。

Now, the 2nd gen charge pump fast charging IC, the NU2205 from NuVolta Technologies aims to improve that with the one-of-its-kind 100W charge pump fast charging IC that is optimal for 2S battery with 4:2 charge pump fast-charging architecture for ultra-fast charging applications in flagship smartphones and other mobile devices. The innovative 2S battery fast charging architecture enables the charging power from 60W to 120W, which can be further increased to 200W.

更高的效率

High efficiency is the most critical parameter in fast-charging applications. The NU2205 not only improves the work efficiency through the internal innovative structure but also can adjust the efficiency through the operating frequency. In the 4:2 mode, the highest efficiency can reach 98%. Under the 10V AC-DC adaptor input, the charging efficiency of the 2S battery in the 2:2 mode can reach up to 99.2%. In high power charging application, it provides the possibility of pulse switching between 4:2 and 2:2 modes to reduce the heat of the system. The NU2205 can also support both 2:1 and 1:1 1S battery fast charging modes.

温度升高

在25°C的环境温度和16V输入下,当2S电池在10A和20A电流处充电时,温度升高分别为44.9°C/46.8°C,如下所示。

(a)10a,使用单个NU2205(b)20a的温度,使用两个NU2205的温度

单个NU2205的EVM板可以稳定输出10A电流,而两个具有NU2205的EVM板可以输出20A的稳定电流。

2S电池架构的优点

When the internal resistance of the battery is only 5mΩ, the power loss exceeds 0.7W. Higher current brings more heat that induces huge challenges to the design of the battery protection board and the internal resistance of the battery cell. Since the resistance of MOSFET has been reduced from 5mΩ to 1.1mΩ to meet the application of fast charging and high current, the 1S battery fast charging encounters the charging power limitation. To overcome this challenge, the 2S battery fast charging solution doubles the battery voltage at the charging output terminal, reducing the current into the battery by half at the same charging power and bringing down the battery heat to 25%.

建筑益处

NU2205和Integrated FET的4:2电荷泵结构已被优化,以实现50%的占空比。该体系结构将USB电缆的电流降低到充电电流的一半,从而进一步降低了充电电缆的损失,并限制了应用程序的温度升高。两阶段体系结构降低了输入电容要求,同时改善了输出电压纹波。

此外,NU2205支持收费。当两个NU2205 IC并行使用时,电荷泵IC将输出120W功率。当三个NU2205 IC并行时,充电能力超过200W。

安全保护

In high-power charging applications, efficiency and heat are the most important considerations. Another important consideration is charging safety. NU2205 integrates up to 34 levels of safety protections, such as protections of input and output voltage and current, battery voltage and current, and temperature, etc. That protects the system and prevents abnormal conditions that damage the battery and system.


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