一种低功耗、绿色节能电源的研究与设计

Study and design of a low power consumption and switching power supply of green mode

阐述了电流模式开关电源的工作原理,详细分析了电路的整体构成,并在此基础上提出了一种电流模式控制PWM型开关电源电路,同时利用反馈式拓扑结构的电流模式控制来实现系统的稳定性。经论证,该电路在低于10 W的工作环境中,实现了提高工作效率,减少谐波污染的目的。测试结果表明该开关电源达到了绿色设计的目的,可满足高性能应用的需要。

At first, the working principle of the current mode switching power supply was described in this paper, and the whole circuit was analyzed in detail. A kind of current mode PWM control type switch power circuit was put forward. At the same tine, the current mode feedback loop was used to achieve the stability of the system. By proof, when this circuit operated below 10 W, the work efficiency was improved, and the harmonic pollution was reduced. The test results show that the green switching power supply is implemented and can meet the requirements for high performance.