Stability property analysis of analogue or digital control DC-DC converters with impedance loads

Qiang Tong; Dong Lai Zhang; Nai Tong Zhang

doi:10.1016/j.proeng.2012.01.150

Stability property analysis of analogue or digital control DC-DC converters with impedance loads

Qiang Tong^*
, Dong Lai Zhang
, Nai Tong Zhang

^*Corresponding author for this work

Shenzhen Academy of Aerospace Technology
Harbin Institute of Technology Shenzhen
School of Electronics and Information Engineering, Harbin Institute of Technology

Research output: Contribution to journal › Conference article › peer-review

Abstract

The stability property of switch mode DC-DC converters with impedance loads is quantitatively analyzed in this paper. The continuous and discrete time transfer functions of converters with impedance loads are derived. The proposed method is suitable for all kinds of impedance loads. A digitally controlled Point-of-Load(POL) with additional capacitor banks is taken as an example, changes of the phase margin, the gain margin and the crossover frequency can be accurately predicted when additional capacitor banks with different values of capacitance and equivalent series resistance(ESR) are placed on the output of the converter. Based on this, a new digital controller can be designed to improve the performance of the converter. The proposed method of this paper is verified by experiments in the end.

Original language	English
Pages (from-to)	1425-1433
Number of pages	9
Journal	Procedia Engineering
Volume	29
DOIs	https://doi.org/10.1016/j.proeng.2012.01.150
State	Published - 2012
Externally published	Yes
Event	2012 International Workshop on Information and Electronics Engineering, IWIEE 2012 - Harbin, China Duration: 10 Mar 2012 → 11 Mar 2012

Keywords

DC-DC Converters
Digital control
Impedance loads
Small-signal analysis

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10.1016/j.proeng.2012.01.150

Cite this

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title = "Stability property analysis of analogue or digital control DC-DC converters with impedance loads",

abstract = "The stability property of switch mode DC-DC converters with impedance loads is quantitatively analyzed in this paper. The continuous and discrete time transfer functions of converters with impedance loads are derived. The proposed method is suitable for all kinds of impedance loads. A digitally controlled Point-of-Load(POL) with additional capacitor banks is taken as an example, changes of the phase margin, the gain margin and the crossover frequency can be accurately predicted when additional capacitor banks with different values of capacitance and equivalent series resistance(ESR) are placed on the output of the converter. Based on this, a new digital controller can be designed to improve the performance of the converter. The proposed method of this paper is verified by experiments in the end.",

keywords = "DC-DC Converters, Digital control, Impedance loads, Small-signal analysis",

author = "Qiang Tong and Zhang, \{Dong Lai\} and Zhang, \{Nai Tong\}",

year = "2012",

doi = "10.1016/j.proeng.2012.01.150",

language = "英语",

volume = "29",

pages = "1425--1433",

journal = "Procedia Engineering",

issn = "1877-7058",

publisher = "Elsevier Ltd",

note = "2012 International Workshop on Information and Electronics Engineering, IWIEE 2012 ; Conference date: 10-03-2012 Through 11-03-2012",

}

TY - JOUR

T1 - Stability property analysis of analogue or digital control DC-DC converters with impedance loads

AU - Tong, Qiang

AU - Zhang, Dong Lai

AU - Zhang, Nai Tong

PY - 2012

Y1 - 2012

N2 - The stability property of switch mode DC-DC converters with impedance loads is quantitatively analyzed in this paper. The continuous and discrete time transfer functions of converters with impedance loads are derived. The proposed method is suitable for all kinds of impedance loads. A digitally controlled Point-of-Load(POL) with additional capacitor banks is taken as an example, changes of the phase margin, the gain margin and the crossover frequency can be accurately predicted when additional capacitor banks with different values of capacitance and equivalent series resistance(ESR) are placed on the output of the converter. Based on this, a new digital controller can be designed to improve the performance of the converter. The proposed method of this paper is verified by experiments in the end.

AB - The stability property of switch mode DC-DC converters with impedance loads is quantitatively analyzed in this paper. The continuous and discrete time transfer functions of converters with impedance loads are derived. The proposed method is suitable for all kinds of impedance loads. A digitally controlled Point-of-Load(POL) with additional capacitor banks is taken as an example, changes of the phase margin, the gain margin and the crossover frequency can be accurately predicted when additional capacitor banks with different values of capacitance and equivalent series resistance(ESR) are placed on the output of the converter. Based on this, a new digital controller can be designed to improve the performance of the converter. The proposed method of this paper is verified by experiments in the end.

KW - DC-DC Converters

KW - Digital control

KW - Impedance loads

KW - Small-signal analysis

UR - https://www.scopus.com/pages/publications/84863386891

U2 - 10.1016/j.proeng.2012.01.150

DO - 10.1016/j.proeng.2012.01.150

M3 - 会议文章

AN - SCOPUS:84863386891

SN - 1877-7058

VL - 29

SP - 1425

EP - 1433

JO - Procedia Engineering

JF - Procedia Engineering

T2 - 2012 International Workshop on Information and Electronics Engineering, IWIEE 2012

Y2 - 10 March 2012 through 11 March 2012

ER -

Stability property analysis of analogue or digital control DC-DC converters with impedance loads

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Keywords

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