Zero Voltage Switching DC-DC Buck Converter with Predictive High Current Mode Control

2019 IEEE XXVIII International Scientific Conference Electronics (ET) Pub Date : 2019-09-01 DOI:10.1109/ET.2019.8878562

G. Angelov, Miroslav Andreev, Georgi Kunov

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Abstract

A Zero Voltage Switching (ZVS) Buck DC-DC converter with predictive high current mode control and control system models are proposed, developed and simulated. The proposed buck topology with predictive high current mode control has advantages, which improve conversion efficiency, current sharing, and cycle-by-cycle current limiting protection, single-pole roll off as the means to achieve high efficiency and no reduction of the output current over the output voltage without reducing throughput power. In this paper the transient process at the start of the converter’s model is simulated, as well as the response of the output voltage regulator to an unexpected change in the load. The proposed circuits are developed in OrCad. Zero voltage switching technique used in a buck converter is more desire and preferable over a hard switched buck converter for low power and high frequency DC-DC conversion applications. In the paper work simulation models of a buck ZVS DC-DC converter and control system model has been simulated and investigated using an OrCad Capture CIS.

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预测大电流模式控制的零电压开关DC-DC降压变换器

提出了一种具有预测大电流模式控制和控制系统模型的零电压开关降压DC-DC变换器，并进行了仿真。本文提出的降压拓扑具有预测高电流模式控制的优点，可以提高转换效率、电流共享、逐周限流保护、单极滚降作为高效率的手段，并且在不降低输出功率的情况下，不降低输出电流超过输出电压。本文模拟了变换器模型开始时的暂态过程，以及输出稳压器对负载意外变化的响应。所提出的电路在OrCad中开发。在低功率和高频DC-DC转换应用中，零电压开关技术比硬开关降压变换器更可取。本文利用OrCad Capture CIS软件对buck - ZVS DC-DC变换器的仿真模型和控制系统模型进行了仿真研究。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2019 IEEE XXVIII International Scientific Conference Electronics (ET)

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