IEICE TRANSACTIONS on Communications
A Study on Loop Gain Measurement Method Using Output Impedance in DC-DC Buck Converter
Summary :
We propose a method to derive the loop gain from the open-loop and closed-loop output impedances in a dc-dc buck converter with voltage mode and current mode controls. This enables the loop gain to be measured without injecting a signal into the feedback loop, i.e. without breaking the feedback loop; hence the proposed method can be applied to the control circuits implemented on an IC. Our simulation and experiment show that the loop gain determined by the proposed method closely matches that yielded by the conventional method, which has to break the feedback loop. These results confirm that the proposed method can accurately estimate the phase margin.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E101-B No.9 pp.1940-1948
- Publication Date
- 2018/09/01
- Publicized
- 2018/02/23
- Online ISSN
- 1745-1345
- DOI
- 10.1587/transcom.2017EBP3358
- Type of Manuscript
- PAPER
- Category
- Energy in Electronics Communications
Authors
Nobukazu TSUKIJI
Gunma University
Yasunori KOBORI
Gunma University
Haruo KOBAYASHI
Gunma University
Keyword
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Nobukazu TSUKIJI, Yasunori KOBORI, Haruo KOBAYASHI, "A Study on Loop Gain Measurement Method Using Output Impedance in DC-DC Buck Converter" in IEICE TRANSACTIONS on Communications,
vol. E101-B, no. 9, pp. 1940-1948, September 2018, doi: 10.1587/transcom.2017EBP3358.
Abstract: We propose a method to derive the loop gain from the open-loop and closed-loop output impedances in a dc-dc buck converter with voltage mode and current mode controls. This enables the loop gain to be measured without injecting a signal into the feedback loop, i.e. without breaking the feedback loop; hence the proposed method can be applied to the control circuits implemented on an IC. Our simulation and experiment show that the loop gain determined by the proposed method closely matches that yielded by the conventional method, which has to break the feedback loop. These results confirm that the proposed method can accurately estimate the phase margin.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2017EBP3358/_p
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@ARTICLE{e101-b_9_1940,
author={Nobukazu TSUKIJI, Yasunori KOBORI, Haruo KOBAYASHI, },
journal={IEICE TRANSACTIONS on Communications},
title={A Study on Loop Gain Measurement Method Using Output Impedance in DC-DC Buck Converter},
year={2018},
volume={E101-B},
number={9},
pages={1940-1948},
abstract={We propose a method to derive the loop gain from the open-loop and closed-loop output impedances in a dc-dc buck converter with voltage mode and current mode controls. This enables the loop gain to be measured without injecting a signal into the feedback loop, i.e. without breaking the feedback loop; hence the proposed method can be applied to the control circuits implemented on an IC. Our simulation and experiment show that the loop gain determined by the proposed method closely matches that yielded by the conventional method, which has to break the feedback loop. These results confirm that the proposed method can accurately estimate the phase margin.},
keywords={},
doi={10.1587/transcom.2017EBP3358},
ISSN={1745-1345},
month={September},}
Copy
TY - JOUR
TI - A Study on Loop Gain Measurement Method Using Output Impedance in DC-DC Buck Converter
T2 - IEICE TRANSACTIONS on Communications
SP - 1940
EP - 1948
AU - Nobukazu TSUKIJI
AU - Yasunori KOBORI
AU - Haruo KOBAYASHI
PY - 2018
DO - 10.1587/transcom.2017EBP3358
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E101-B
IS - 9
JA - IEICE TRANSACTIONS on Communications
Y1 - September 2018
AB - We propose a method to derive the loop gain from the open-loop and closed-loop output impedances in a dc-dc buck converter with voltage mode and current mode controls. This enables the loop gain to be measured without injecting a signal into the feedback loop, i.e. without breaking the feedback loop; hence the proposed method can be applied to the control circuits implemented on an IC. Our simulation and experiment show that the loop gain determined by the proposed method closely matches that yielded by the conventional method, which has to break the feedback loop. These results confirm that the proposed method can accurately estimate the phase margin.
ER -
English
