Differential zero compensator in delay-ripple reshaped constant on-time control for buck converter with multi-layer ceramic capacitors

Wei Chung Chen; Chia Ching Lin; Ke-Horng Chen

doi:10.1109/ISCAS.2012.6272128

Differential zero compensator in delay-ripple reshaped constant on-time control for buck converter with multi-layer ceramic capacitors

Wei Chung Chen^*, Chia Ching Lin, Ke-Horng Chen

^*Corresponding author for this work

Department of Electrical and Computer Engineering

Research output: Contribution to conference › Paper › peer-review

4 Scopus citations

Abstract

A differential-zero-compensator (DZC) technology in constant on-time control dc-dc buck converter which can be applied for the ceramic capacitors is proposed in this paper. Ceramic capacitors are widely used in industry because its low cost. However, the stability often confronts with the sub-harmonic problem related to the incorrect output capacitor and ESR used. In this paper, the proposed DZC technology remits the limitation without adding extra pins and the complexity of circuit still maintain simple. Furthermore, the proposed self-compensated on-time timer (ONT) offers the reliable on-time period with linear solution. In addition, utilizing ceramic capacitor derives smaller ripple of 8mV at 8A. High efficiency of 92.5 % can be guaranteed due to the small ESR value. Stability criteria analysis and simulation results demonstrate that the stability can be ensured even if the ESR is small than 2m.

Original language	English
Pages	692-695
Number of pages	4
DOIs	https://doi.org/10.1109/ISCAS.2012.6272128
State	Published - 2012
Event	2012 IEEE International Symposium on Circuits and Systems, ISCAS 2012 - Seoul, Korea, Republic of Duration: 20 May 2012 → 23 May 2012

Conference

Conference	2012 IEEE International Symposium on Circuits and Systems, ISCAS 2012
Country/Territory	Korea, Republic of
City	Seoul
Period	20/05/12 → 23/05/12

Keywords

Constant on-time
DC-DC converter
ceramic capacitor
fast transient response

Access to Document

10.1109/ISCAS.2012.6272128

Cite this

@conference{3e4111f1134942ceb4280a7d1ce7e081,

title = "Differential zero compensator in delay-ripple reshaped constant on-time control for buck converter with multi-layer ceramic capacitors",

abstract = "A differential-zero-compensator (DZC) technology in constant on-time control dc-dc buck converter which can be applied for the ceramic capacitors is proposed in this paper. Ceramic capacitors are widely used in industry because its low cost. However, the stability often confronts with the sub-harmonic problem related to the incorrect output capacitor and ESR used. In this paper, the proposed DZC technology remits the limitation without adding extra pins and the complexity of circuit still maintain simple. Furthermore, the proposed self-compensated on-time timer (ONT) offers the reliable on-time period with linear solution. In addition, utilizing ceramic capacitor derives smaller ripple of 8mV at 8A. High efficiency of 92.5 % can be guaranteed due to the small ESR value. Stability criteria analysis and simulation results demonstrate that the stability can be ensured even if the ESR is small than 2m.",

keywords = "Constant on-time, DC-DC converter, ceramic capacitor, fast transient response",

author = "Chen, {Wei Chung} and Lin, {Chia Ching} and Ke-Horng Chen",

year = "2012",

doi = "10.1109/ISCAS.2012.6272128",

language = "English",

pages = "692--695",

note = "2012 IEEE International Symposium on Circuits and Systems, ISCAS 2012 ; Conference date: 20-05-2012 Through 23-05-2012",

}

Differential zero compensator in delay-ripple reshaped constant on-time control for buck converter with multi-layer ceramic capacitors. / Chen, Wei Chung; Lin, Chia Ching; Chen, Ke-Horng.
2012. 692-695 Paper presented at 2012 IEEE International Symposium on Circuits and Systems, ISCAS 2012, Seoul, Korea, Republic of.

Research output: Contribution to conference › Paper › peer-review

TY - CONF

T1 - Differential zero compensator in delay-ripple reshaped constant on-time control for buck converter with multi-layer ceramic capacitors

AU - Chen, Wei Chung

AU - Lin, Chia Ching

AU - Chen, Ke-Horng

PY - 2012

Y1 - 2012

N2 - A differential-zero-compensator (DZC) technology in constant on-time control dc-dc buck converter which can be applied for the ceramic capacitors is proposed in this paper. Ceramic capacitors are widely used in industry because its low cost. However, the stability often confronts with the sub-harmonic problem related to the incorrect output capacitor and ESR used. In this paper, the proposed DZC technology remits the limitation without adding extra pins and the complexity of circuit still maintain simple. Furthermore, the proposed self-compensated on-time timer (ONT) offers the reliable on-time period with linear solution. In addition, utilizing ceramic capacitor derives smaller ripple of 8mV at 8A. High efficiency of 92.5 % can be guaranteed due to the small ESR value. Stability criteria analysis and simulation results demonstrate that the stability can be ensured even if the ESR is small than 2m.

AB - A differential-zero-compensator (DZC) technology in constant on-time control dc-dc buck converter which can be applied for the ceramic capacitors is proposed in this paper. Ceramic capacitors are widely used in industry because its low cost. However, the stability often confronts with the sub-harmonic problem related to the incorrect output capacitor and ESR used. In this paper, the proposed DZC technology remits the limitation without adding extra pins and the complexity of circuit still maintain simple. Furthermore, the proposed self-compensated on-time timer (ONT) offers the reliable on-time period with linear solution. In addition, utilizing ceramic capacitor derives smaller ripple of 8mV at 8A. High efficiency of 92.5 % can be guaranteed due to the small ESR value. Stability criteria analysis and simulation results demonstrate that the stability can be ensured even if the ESR is small than 2m.

KW - Constant on-time

KW - DC-DC converter

KW - ceramic capacitor

KW - fast transient response

UR - http://www.scopus.com/inward/record.url?scp=84866608371&partnerID=8YFLogxK

U2 - 10.1109/ISCAS.2012.6272128

DO - 10.1109/ISCAS.2012.6272128

M3 - Paper

AN - SCOPUS:84866608371

SP - 692

EP - 695

T2 - 2012 IEEE International Symposium on Circuits and Systems, ISCAS 2012

Y2 - 20 May 2012 through 23 May 2012

ER -

Differential zero compensator in delay-ripple reshaped constant on-time control for buck converter with multi-layer ceramic capacitors

Abstract

Conference

Keywords

Access to Document

Other files and links

Fingerprint

Cite this