Static and Dynamic Characteristics of DC-DC Converter Using a Digital Filter

Fujio KUROKAWA; Masashi OKAMATSU

doi:10.1587/transcom.E92.B.998

Static and Dynamic Characteristics of DC-DC Converter Using a Digital Filter

Fujio KUROKAWA, Masashi OKAMATSU

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This paper presents the regulation and dynamic characteristics of the dc-dc converter with digital PID control, the minimum phase FIR filter or the IIR filter, and then the design criterion to improve the dynamic characteristics is discussed. As a result, it is clarified that the DC-DC converter using the IIR filter method has superior performance characteristics. The regulation range is within 1.3%, the undershoot against the step change of the load is less than 2% and the transient time is less than 0.4 ms with the IIR filter method. In this case, the switching frequency is 100 kHz and the step change of the load R is from 50 Ω to 10 Ω . Further, the superior characteristics are obtained when the first gain, the second gain and the second cut-off frequency are relatively large, and the first cut-off frequency and the passing frequency are relatively low. Moreover, it is important that the gain strongly decreases at the second cut-off frequency because the upper band pass frequency range must be always less than half of the sampling frequency based on the sampling theory.

Publication: IEICE TRANSACTIONS on Communications Vol.E92-B No.3 pp.998-1003

Publication Date: 2009/03/01

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Online ISSN: 1745-1345

DOI: 10.1587/transcom.E92.B.998

Type of Manuscript: PAPER

Category: Energy in Electronics Communications

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Fujio KUROKAWA, Masashi OKAMATSU, "Static and Dynamic Characteristics of DC-DC Converter Using a Digital Filter" in IEICE TRANSACTIONS on Communications, vol. E92-B, no. 3, pp. 998-1003, March 2009, doi: 10.1587/transcom.E92.B.998.
Abstract: This paper presents the regulation and dynamic characteristics of the dc-dc converter with digital PID control, the minimum phase FIR filter or the IIR filter, and then the design criterion to improve the dynamic characteristics is discussed. As a result, it is clarified that the DC-DC converter using the IIR filter method has superior performance characteristics. The regulation range is within 1.3%, the undershoot against the step change of the load is less than 2% and the transient time is less than 0.4 ms with the IIR filter method. In this case, the switching frequency is 100 kHz and the step change of the load R is from 50 Ω to 10 Ω . Further, the superior characteristics are obtained when the first gain, the second gain and the second cut-off frequency are relatively large, and the first cut-off frequency and the passing frequency are relatively low. Moreover, it is important that the gain strongly decreases at the second cut-off frequency because the upper band pass frequency range must be always less than half of the sampling frequency based on the sampling theory.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E92.B.998/_p

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@ARTICLE{e92-b_3_998,
author={Fujio KUROKAWA, Masashi OKAMATSU, },
journal={IEICE TRANSACTIONS on Communications},
title={Static and Dynamic Characteristics of DC-DC Converter Using a Digital Filter},
year={2009},
volume={E92-B},
number={3},
pages={998-1003},
abstract={This paper presents the regulation and dynamic characteristics of the dc-dc converter with digital PID control, the minimum phase FIR filter or the IIR filter, and then the design criterion to improve the dynamic characteristics is discussed. As a result, it is clarified that the DC-DC converter using the IIR filter method has superior performance characteristics. The regulation range is within 1.3%, the undershoot against the step change of the load is less than 2% and the transient time is less than 0.4 ms with the IIR filter method. In this case, the switching frequency is 100 kHz and the step change of the load R is from 50 Ω to 10 Ω . Further, the superior characteristics are obtained when the first gain, the second gain and the second cut-off frequency are relatively large, and the first cut-off frequency and the passing frequency are relatively low. Moreover, it is important that the gain strongly decreases at the second cut-off frequency because the upper band pass frequency range must be always less than half of the sampling frequency based on the sampling theory.},
keywords={},
doi={10.1587/transcom.E92.B.998},
ISSN={1745-1345},
month={March},}

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TY - JOUR
TI - Static and Dynamic Characteristics of DC-DC Converter Using a Digital Filter
T2 - IEICE TRANSACTIONS on Communications
SP - 998
EP - 1003
AU - Fujio KUROKAWA
AU - Masashi OKAMATSU
PY - 2009
DO - 10.1587/transcom.E92.B.998
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E92-B
IS - 3
JA - IEICE TRANSACTIONS on Communications
Y1 - March 2009
AB - This paper presents the regulation and dynamic characteristics of the dc-dc converter with digital PID control, the minimum phase FIR filter or the IIR filter, and then the design criterion to improve the dynamic characteristics is discussed. As a result, it is clarified that the DC-DC converter using the IIR filter method has superior performance characteristics. The regulation range is within 1.3%, the undershoot against the step change of the load is less than 2% and the transient time is less than 0.4 ms with the IIR filter method. In this case, the switching frequency is 100 kHz and the step change of the load R is from 50 Ω to 10 Ω . Further, the superior characteristics are obtained when the first gain, the second gain and the second cut-off frequency are relatively large, and the first cut-off frequency and the passing frequency are relatively low. Moreover, it is important that the gain strongly decreases at the second cut-off frequency because the upper band pass frequency range must be always less than half of the sampling frequency based on the sampling theory.
ER -