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首页> 外文期刊>International Journal of Electrical and Computer Engineering >A new Li-ion battery charger with charge mode selection based on 0.18 um CMOS for phone applications
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A new Li-ion battery charger with charge mode selection based on 0.18 um CMOS for phone applications

机译：一种新的锂离子电池充电器，基于0.18 um CMOS用于手机应用的充电模式选择

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摘要

A new architecture of Li-Ion battery charger with charge mode selection is presented in this work. To ensure high efficiency, good accuracy and complete protection mode, we propose an architecture based on variable current source, temperature detector and power control. To avoid the risk of damage, the Li- Ion batteries charging process must change between three modes of current (trickle current (TC), constant current (CC), and constant voltage (CV)) in order to charge the battery with degrading current. However, the interest of this study is to develop a fast battery charger with high accuracy that is able to switch between charging modes without reducing its power efficiency, and to guarantee a complete protection mode. The proposed charger circuit is designed to control the charging process in three modes using the charging mode selection. The obtained results show that the Li-ion batteries can be successfully charged in a short time without reducing their efficiency. The proposed charger is implemented in 180 nm CMOS technology with a maximum charging current equal to 1 A and a maximum battery voltage equal to 4.22 V, (with input range 2.7-4.5 V). The chip area is 1.5 mm2 and the power efficiency is 90.09 %.
机译：这项工作中提出了一种带充电模式选择的锂离子电池充电器的新架构。为确保高效率，良好的精度和完整的保护模式，我们提出了一种基于可变电流源，温度检测器和功率控制的架构。为了避免损坏的风险，Li-离子电池充电过程必须在三种电流模式（涓流电流（Tc），恒流（CC）和恒定电压（CV）之间发生变化，以便为电池充电，具有劣化电流。然而，本研究的兴趣是开发一种高精度的快速充电器，精度能够在充电模式之间切换而不降低其功率效率，并保证完整的保护模式。所提出的充电器电路设计用于使用充电模式选择以三种模式控制充电过程。所获得的结果表明，锂离子电池可以在短时间内成功充电，而不降低其效率。所提出的充电器以180nm CMOS技术实现，最大充电电流等于1a，最大电池电压等于4.22 V，（输入范围2.7-4.5V）。芯片面积为1.5 mm2，功率效率为90.09％。

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