CAJ | 학술논문

设计了一种基于UCC28600控制器的准谐振反激式开关电源电路，分析了准谐振反激式开关电源的工作原理及实现方式，给出了电路及参数设计和选择过程，以及实际工作开关波形。实验证明，准谐振反激式开关电源具有输入电压范围宽、转换效率高、低EMI、工作稳定可靠的特点。准谐振技术降低了MOSFET的开关损耗，提高产品可靠性。此外，更软的开关改善了电源的EMI特性，允许设计人员减少滤波器的数目，降低了产品成本。
설계료일충기우UCC28600공제기적준해진반격식개관전원전로，분석료준해진반격식개관전원적공작원리급실현방식，급출료전로급삼수설계화선택과정，이급실제공작개관파형。실험증명，준해진반격식개관전원구유수입전압범위관、전환효솔고、저EMI、공작은정가고적특점。준해진기술강저료MOSFET적개관손모，제고산품가고성。차외，경연적개관개선료전원적EMI특성，윤허설계인원감소려파기적수목，강저료산품성본。
A kind of quasi-resonant flyback switch power supply circuit based on UCC28600 controller is designed in this paper. The working principle and the realization method of quasi-resonant flyback switch power supply are analyzed. The circuit, design and selection process of parameters and switching waveform are given. Experiments show that quasi-resonant flyback switching power supply has the characteristics of wide input voltage range,high conversion efficiency and low EMI,and works stable and reliable. The quasi-resonant technique reduced the switching loss of MOSFET,and improved product reliability. In ad-dition,the softer switch improved EMI characteristics of power supply,reduced the number of filters and the cost of products.