宽输入电压降压型DC-DC转换器发展综述

电源管理芯片在电子设备系统中担负起对电能的变换、分配、检测及其他电能管理的职责，最常见的结构是线性电源和开关电源。开关电源通过控制开关管开通和关断的时间，维持稳定的输出电压，以其高效率、小型化的特点而广泛应用于几乎所有的电子设备。工业控制系统、汽车电子等领域往往存在多个电压轨，在不同工作阶段还存在输入电压瞬间大范围变换的情况，这要求其具有高输入电压的同时，还需要在一个较宽的输入范围内能够高效地给负载供电。文章围绕宽输入电压DC-DC的转换效率提升、快速响应技术及低EMI设计进行了综合阐述，并分析了学术界和业界的一些最新进展。

Review on the Development of Wide Input Voltage Buck DC-DC Converter

The power management chip is responsible for the transformation, distribution, detection and other power management of electrical energy in the electronic equipment system. The most common structures of which are linear power supplies and switching power supplies. The switching power supply can maintain a stable output voltage by controlling the MOSFET switch opening and closing time. It is widely used in almost all electronic equipment because of its high efficiency and miniaturization characteristics. There are often multiple voltage rails in industrial control systems, automotive electronics and other fields. In different working stages, there is also a large range of input voltage instantaneous transformation, which makes it require high input voltage at the same time. It is necessary to power the loads efficiently over a wide input range. In this paper, the conversion efficiency improvement of wide input voltage DC-DC, fast response technology and low EMI design are comprehensively described, and some recent advances in academia and industry are analyzed.