遲滯脈波寬度調變控制器於直流-直流降壓轉換器之分析

Abstract

本論文著重在直流-直流降壓轉換器拓樸的效率和負載暫態響應。為了得到最 佳的直流-直流降壓轉換器之效率於可攜帶式電子產品，因此，電路設計概念主 要以低成本、低複雜性和高效率為系統構想。 以ESR、RfCf 兩種電路拓樸為基礎，進而提出混合的電路拓樸為混合型，也 稱之混合型。推導數學方程式去分析直流-直流降壓轉換器之效率，並且使用模 擬、實驗去驗證推導結果，最後根據實驗結果的分析去歸納結論和建立規則，因 此設計人員可以了解到三種電路拓樸的各自缺點與優點。

The purpose of this thesis is to investigate efficiency and load transient response on three kinds of DC to DC buck converter topology. It's for getting the best efficiency of DC to DC buck converters for portable electronic products. Therefore, the concept of circuit design constitutes a low cost, low complexity and high efficiency system. Based on two circuit topologies which are ESR and RfCf, the proposed mixed circuit scheme is ESR+RfCf, also called hybrid. We derive the mathematical formula for DC to DC buck converter to analyze efficiency, and also use the simulation and experiments to prove analysis results. According to the analysis of all experimental results, the next step is to draw the conclusion and make the rule. As a result, designers understand disadvantages and advantages of three circuit topologies.