传统的可调整线性电源在输出电压低时，电源的大部分额定功率耗费在电源内部，变换效率很低，而且体积庞大笨重。
At low output voltage, the majority of the rated power of traditional adjustable linear power supply is wasted in the internal power supply and the conversion efficiency is low with huge volume.
采用功率MOSFET取代普通二极管或肖特基二极管的同步整流技术，可以使低压大电流变换器的效率得到极大的提高。
Applying the synchronous rectifier technology in which MOSFET replaces common diodes or schottky diodes can increase the efficiency of low-voltage, great-current transformer.
对变换器中的主变压器和输出电感进行集成，得到高效率、高功率密度的有源箝位正激变换器。
By integrating the main transformer and output inductor with magnetics integration technique, an ACFC with high efficiency and high power density was obtained.
软开关技术能够有效改善功率开关管的工作环境，降低开关损耗，提高变换器的效率。
Soft switching technique could improve the circumstance of the power switch, reduce the losses and increase the efficiency of the converter.
试验结果表明，这种变换器具有电路拓扑简单、功率密度高、变换效率高、功率因数高、不间断供电、成本低等优点。
Test results demonstrated that the converter has the advantages of simple topology, high power density, high conversion efficiency, high power factor, uninterruptible power supply, low cost.
随着逆变器输出性能和功率密度需求的不断提高，如何在较高开关频率下进一步提升逆变器的变换效率，显得越来越重要。
As the requirements for higher power density and output performance, how to keep the inverter at a relative higher efficiency at higher switching frequency is becoming more and more important.
受寄生元件的影响，DC - DC升压变换器的输出电压和功率传递效率受到限制，电压举升技术为改善电路特性提供了好方法。
Since the effect of parasitic elements limits the output voltage and power transfer efficiency of DC-DC converters, voltage lift technique opens a good way to improve circuit characteristics.
由于寄生参数的影响，DC - DC升压变换器的输出电压和功率传递效率受到限制。
Because of the effect of parasitic elements the output voltage and power transfer efficiency of DC-DC converters are limited.
可以预见软开关技术的应用可使电力电子变换器具有更高的效率和更高的功率密度。
It can be seen in the future, power electronics converter will get higher efficiency and power density.
该变换器完成从正电压至正和负电压的DC- DC升压变换，功率密度和效率高，拓扑结构简单价廉。
These converters perform from positive to positive and negative DC DC voltage increasing conversion with high power density, high efficiency and cheap topology in simple structure.
在硬开关状态下，PWM功率变换器的致命弱点是开关管开关损耗随开关频率成正比增加，不利于系统的集成和转换效率的提高。
The shortcoming of hard switch is that the power loss of power devices increases with the switching frequency, which is no good for system integration and improvement of conversion efficiency.
它允许使用非常低的直流电阻(DCR)功率电感(0.3米？)通过增强电流检测信号的SNR最大化变换器效率和增加功率密度。
It enables the use of very low DC resistance (DCR) power inductors (0.3m?) by enhancing the SNR of the current sense signal to maximise converter efficiency and increase power density.
在这三者中，开关电容变换器以其高效率，EMI小，体积小的特点在便携式产品和中小功率应用场合得到了广泛的应用。
Among them, switched capacitor DC-DC converters have got wide applications in portable products and small and medium-power areas due to their high efficiency, small EMI and small size.
结果表明，变换器有良好的零电压软开关特性和负载特性，较高的功率转换效率和较低的电磁辐射。
The results show that the converter have good ZVS and a special property of loading character, and it has a higher efficiency of power conversion and lower EMI.
此新型材料特别适用于开关电源中的功率变换器，即使不满载时，也可达到最佳效率。
The new material is thus particularly suitable for power converters in switch-mode power supplies, allowing optimized efficiency even at partial load.
此新型材料特别适用于开关电源中的功率变换器，即使不满载时，也可达到最佳效率。
The new material is thus particularly suitable for power converters in switch-mode power supplies, allowing optimized efficiency even at partial load.
应用推荐