Kumaraguruparan Sivakumar, Elango Konguvel
School of Electronics Engineering, Vellore Institute of Technology, Vellore, 632014, Tamilnadu, India.
Heliyon. 2024 Sep 19;10(18):e38119. doi: 10.1016/j.heliyon.2024.e38119. eCollection 2024 Sep 30.
A DC-DC buck converter (DDBC) plays a crucial role in facilitating the rapid evolution of Internet of Things (IoT) applications across a broad spectrum of load requirements. Achieving high efficiency under diverse load conditions necessitates a meticulous exploration of modulation and control methods. This paper aims to explore literature concerning modulation and control techniques employed in buck converters for IoT applications, with the goal of achieving optimal efficiency. The most often used control methods in the DDBC for power conversion efficiently are adaptive controlled pulse skip modulation (APSM), pulse frequency modulation (PFM), digital pulse width modulation (DPWM), and adaptive on time control (AOT). Based on the major drawbacks of high quiescent current, large ripple, and low efficiency, the control methods used in IoT applications to achieve high efficiency are discussed. The structure of DDBC with the unique controlling method and their capability of suppressing the output ripple voltage and minimizing quiescent current are briefly addressed. Comparison among the methods exhibits how control methods can achieve high efficiency. This paper outlines the major challenges in power converter control for future research and development.
DC-DC降压转换器（DDBC）在推动物联网（IoT）应用根据广泛的负载要求快速发展方面发挥着关键作用。要在不同负载条件下实现高效率，就需要对调制和控制方法进行细致探索。本文旨在探讨有关用于物联网应用的降压转换器的调制和控制技术的文献，目标是实现最佳效率。DDBC中最常用于高效功率转换的控制方法是自适应控制脉冲跳跃调制（APSM）、脉冲频率调制（PFM）、数字脉冲宽度调制（DPWM）和自适应导通时间控制（AOT）。基于高静态电流、大纹波和低效率等主要缺点，讨论了物联网应用中用于实现高效率的控制方法。简要介绍了具有独特控制方法的DDBC的结构及其抑制输出纹波电压和最小化静态电流的能力。方法之间的比较展示了控制方法如何实现高效率。本文概述了功率转换器控制未来研发中的主要挑战。
