Parameter Design of Wide Load Range Switched DC-DC Converter with RHP Zero

doi:10.7652/xjtuxb202106020

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Parameter Design of Wide Load Range Switched DC-DC Converter with RHP Zero

更新时间：2025-07-09

- Parameter Design of Wide Load Range Switched DC-DC Converter with RHP Zero
- Vol. 55, Issue 6, Pages: 166-175(2021)
- 作者机构：
  
  1. 陕西理工大学电气工程学院,陕西,汉中,723001
  2. 陕西省工业自动化重点实验室,陕西,汉中,723001
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202106020
  CLC： TM46
- Online First：10 June 2021，
  
  Published：2021
- 稿件说明：
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Parameter Design of Wide Load Range Switched DC-DC Converter with RHP Zero[J]. 2021, 55(6): 166-175.
DOI：

Parameter Design of Wide Load Range Switched DC-DC Converter with RHP Zero[J]. 2021, 55(6): 166-175. DOI： 10.7652/xjtuxb202106020.

摘要

针对含有右半平面(RHP)零点的DC-DC变换器工作在宽负载范围时暂态响应速度慢、参数设计困难的问题

以Buck-Boost变换器为例

建立了其负调电压暂态数学模型

基于该模型对负调电压峰值时间和负载电阻之间的关系进行了分析。指出当负载电阻最小值小于临界负载电阻时

负调电压峰值时间随负载电阻的增大而增大; 当负载电阻最小值大于临界负载电阻时

负调电压峰值时间随负载电阻的增大而减小; 当负载电阻和临界负载电阻相等时

负调电压峰值时间达到极大值。根据负调电压峰值时间与负载电阻之间的关系

提出了含有RHP零点的宽负载范围Buck-Boost变换器的参数设计方法。实验结果表明:本文提出的参数设计方法可以有效地提高宽负载范围Buck-Boost变换器暂态响应速度。研究结果对含有RHP零点的宽负载范围DC-DC变换器的参数设计具有参考意义。

Abstract

Aiming at the problems of slow transient response speed and difficult parameter design of DC-DC converters with right half plane(RHP)zero when they work in a wide range of load

a mathematical model of negative regulated voltage transient state is established by taking Buck-Boost converter as an example

and based on the model

the relationship between the peak time of negative regulated voltage and load resistance is analyzed. It is pointed out that when the minimum load resistance is smaller than the critical load resistance

the peak time of negative voltage regulation increases with the increase of load resistance. When the minimum load resistance is greater than the critical load resistance

the peak time of negative voltage decreases with the increase of load resistance. When the load resistance and the critical load resistance are equal

the negative voltage peak time reaches the maximum value. According to the relationship between the peak time of negative voltage regulation and the load resistance

a parameter design method for Buck-Boost converter with wide load range and RHP zero point is proposed. Experimental results show that the proposed parameter design method effectively improves the transient response speed of the Buck-Boost converter with wide load range. These results may serve as reference for the parameter design of DC-DC converter with wide load range and RHP zero point.

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references

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