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提出了一种中小功率绿色模式开关电源设计,该电源采用两级变换器分别对输入电流波形整形和快速调节输出电压。采用过渡模式有源功率因数校正、准谐振变频控制功率隔离变换和同步整流等多种先进的电源控制技术以降低电源的总机损耗,提高系统效率,减少谐波污染。测试结果表明该开关电源达到了绿色设计目的,可满足高性能应用的需要。
Proposed a medium and small power green mode switching power supply design, the power supply using two-stage converter respectively, shaping the input current waveform and quickly adjust the output voltage. The use of advanced active power factor correction of transition mode, quasi-resonant frequency conversion power conversion control and synchronous rectification and other advanced power control technology to reduce power loss switchboard, improve system efficiency and reduce harmonic pollution. The test results show that the switching power supply has reached the green design purpose, to meet the needs of high-performance applications.