中文摘要：

针对电池供电设备对低功耗和高可靠的便携式充电功能的需求,设计了一种高集成的开关模式电池充电管理和系统电源路径管理的方案,该方案可广泛应用于单节锂离子和锂聚合物电池的移动电源。低阻抗电源路径优化了开关模式运行效率,减少了电池充电时间并延长了放电阶段的电池寿命。此外,具有充电和系统设置的I2C串行接口增加了系统的灵活性,电池电量检测及其他保护功能的设计进一步完善了该移动电源方案。实验表明,该移动电源方案在电流为2 A时的充电效率达到93.2%,电流为1 A时电池升压效率达到94.5%,充电电压精度达到±0.5%,充电电流精度达到±7%,升压模式下输出电压精度达到±2%,并且各项保护功能均能可靠工作。

英文摘要：

For the demand of portable charging function with low power consumption and high reliability for battery powered devices, a power solution of highly-integrated switch-mode battery charge management and system power path management for single cell Li-ion and Li-polymer battery mobile power was designed. Its low impedance power path optimized switch-mode operation efficiency, reduced battery charging time and extended battery life during discharging phase. In addition, the FC serial interface with charging and system settings made the power supply more flexible, and the design of battery capacity detection and other protection functions further improved the solution of the mobile power. The test results show that the mobile power achieves 93.2% charge efficiency at 2 A, 94.5% boost efficiency at 1 A, ± 0.5% charge voltage regulation accuracy, ± 7% charge current regulation accuracy and ± 2% output voltage regulation accuracy in boost mode. All the protection functions can reliably work.