文章介绍了一种基于锂电池的电源系统设计方法，该电源系统采用micro usb口充电，可以提供5V，3.3V电压，满足多数嵌入式系统的供电需要，电路采用通用化的设计思路，具有体积小、成本低等优点。%This paper introduces a method for lithium power system design based on the power system uses micro usb charging port can provide 5V, 3.3V voltage supply to meet the needs of most embedded systems, the circuit using a common design ideas, with small size, and low cost.
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