新拓扑超低压大电流开关电源的研究与实现

Research and implementation of ultra low voltage and large current switching power supply with the new topology

集成电路构成的信息化系统功耗不断增加,能耗巨大,超低压供电的低功耗集成电路芯片的出现降低了系统能耗,除此之外许多特种行业也需要超低压大电流电源。为适应这些负载的需求,超低压大电流开关电源得到了快速发展,在该领域国内与国外相比存在较大的差距,有必要设计自主知识产权的高性能低压大电流电源。对新拓扑结构超低压大电流电源进行了仿真分析和实物测试,设计的低压大电流开关电源实现了1 V/35 A,0.7 V/20 A的指标,在实现更低电压和更大电流指标上有显著改善提高,而且结构简单,但是效率和纹波指标不高,还有待提升。

The power consumption of information system composed of integrated circuits is increasing,and the energy consumption is huge.The emergence of low-power integrated circuit chips with ultra-low voltage power supply reduces the system energy consumption.In addition,many special industries also need ultra-low voltage and large current power supply.In order to meet the needs of these loads,ultra-low voltage and large current switching power supply has been developed rapidly.There is a big gap between China and foreign countries in this field.It is necessary to design high performance low voltage and large current power supply with independent intellectual property rights.In this paper,the simulation analysis and physical test of ultra-low voltage and high current power supply with the new topology are carried out.The designed low voltage and large current switching power supply achieves 1 V/35 A,0.7 V/20 A indicators,and has significant improvement in achieving lower voltage and larger current indicators.Moreover,the structure is simple,but the efficiency and ripple indicators are not high,which need to be improved.