In recent years, the design of new electronic equipment requires the development of new topologies for power supplies. The above is clear for portable equipment, which many times is classified as light loads. These new applications require power supplies with wide conversion ratios and better efficiencies. A solution to this problem is the use of two or more conventional converters connected in cascade, which have been proposed to operate in continuous conduction mode; however, if these converters operate in discontinuous conduction mode (DCM) a better efficiency is achieved. In this paper, a cascade connection based on two boost converters operating in DCM is proposed. A step‐by‐step procedure for the proper design of the cascade connection is given. Simulation and experimental results for a low power converter validate the proposed methodology. Thus, the design procedure will help in designing converters for light power applications. © 2020 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.

中文翻译：

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用于便携式负载的不连续传导模式下的升压转换器的级联

近年来，新的电子设备的设计要求开发电源的新拓扑。对于便携式设备来说，以上是很明显的，便携式设备经常被归类为轻负载。这些新应用需要具有宽转换比和更高效率的电源。解决该问题的方法是使用两个或更多个级联连接的常规转换器，这些转换器已建议以连续导通模式工作。但是，如果这些转换器以不连续导通模式（DCM）工作，则会获得更高的效率。本文提出了一种基于在DCM中运行的两个升压转换器的级联连接。给出了正确设计级联连接的分步过程。低功率转换器的仿真和实验结果验证了所提出的方法。因此，设计过程将有助于设计用于轻功率应用的转换器。©2020日本电气工程师学会。由Wiley Periodicals LLC发布。