Highly Accurate and Efficient Current-Mode PWM CMOS DC-DC Buck Converter with On-Chip Current-Sensing

Kuo-Hsing CHENG; Chia-Wei SU; Hsin-Hsin KO

doi:10.1093/ietele/e91-c.12.1941

Highly Accurate and Efficient Current-Mode PWM CMOS DC-DC Buck Converter with On-Chip Current-Sensing

Kuo-Hsing CHENG, Chia-Wei SU, Hsin-Hsin KO

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In this paper, a high accuracy, high efficiency, and wide current-sensing range current-mode PWM buck converter with on-chip current-sensing technique is presented. The proposed current-sensing circuit uses simple switch technique to achieve high accuracy, high power efficiency, and high line regulation. The test chip is fabricated using TSMC 0.18 µm 1P6M 3.3 V CMOS process. The measurement results show that the buck converter with on-chip current-sensing circuit can operate from 700 kHz to 3 MHz with a supply voltage of 1.5-5 V and the output voltage of 0.5-4.5 V for lithium ion battery applications. The accuracy of the proposed current-sensing circuit is exceeds 89.8% for load current from 50 mA to 500 mA and for temperature from 0C to 100C. The peak power efficiency of the buck converter is up to 95.5%.

Publication: IEICE TRANSACTIONS on Electronics Vol.E91-C No.12 pp.1941-1950

Publication Date: 2008/12/01

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Online ISSN: 1745-1353

DOI: 10.1093/ietele/e91-c.12.1941

Type of Manuscript: PAPER

Category: Electronic Circuits

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Kuo-Hsing CHENG, Chia-Wei SU, Hsin-Hsin KO, "Highly Accurate and Efficient Current-Mode PWM CMOS DC-DC Buck Converter with On-Chip Current-Sensing" in IEICE TRANSACTIONS on Electronics, vol. E91-C, no. 12, pp. 1941-1950, December 2008, doi: 10.1093/ietele/e91-c.12.1941.
Abstract: In this paper, a high accuracy, high efficiency, and wide current-sensing range current-mode PWM buck converter with on-chip current-sensing technique is presented. The proposed current-sensing circuit uses simple switch technique to achieve high accuracy, high power efficiency, and high line regulation. The test chip is fabricated using TSMC 0.18 µm 1P6M 3.3 V CMOS process. The measurement results show that the buck converter with on-chip current-sensing circuit can operate from 700 kHz to 3 MHz with a supply voltage of 1.5-5 V and the output voltage of 0.5-4.5 V for lithium ion battery applications. The accuracy of the proposed current-sensing circuit is exceeds 89.8% for load current from 50 mA to 500 mA and for temperature from 0C to 100C. The peak power efficiency of the buck converter is up to 95.5%.
URL: https://global.ieice.org/en_transactions/electronics/10.1093/ietele/e91-c.12.1941/_p

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@ARTICLE{e91-c_12_1941,
author={Kuo-Hsing CHENG, Chia-Wei SU, Hsin-Hsin KO, },
journal={IEICE TRANSACTIONS on Electronics},
title={Highly Accurate and Efficient Current-Mode PWM CMOS DC-DC Buck Converter with On-Chip Current-Sensing},
year={2008},
volume={E91-C},
number={12},
pages={1941-1950},
abstract={In this paper, a high accuracy, high efficiency, and wide current-sensing range current-mode PWM buck converter with on-chip current-sensing technique is presented. The proposed current-sensing circuit uses simple switch technique to achieve high accuracy, high power efficiency, and high line regulation. The test chip is fabricated using TSMC 0.18 µm 1P6M 3.3 V CMOS process. The measurement results show that the buck converter with on-chip current-sensing circuit can operate from 700 kHz to 3 MHz with a supply voltage of 1.5-5 V and the output voltage of 0.5-4.5 V for lithium ion battery applications. The accuracy of the proposed current-sensing circuit is exceeds 89.8% for load current from 50 mA to 500 mA and for temperature from 0C to 100C. The peak power efficiency of the buck converter is up to 95.5%.},
keywords={},
doi={10.1093/ietele/e91-c.12.1941},
ISSN={1745-1353},
month={December},}

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TY - JOUR
TI - Highly Accurate and Efficient Current-Mode PWM CMOS DC-DC Buck Converter with On-Chip Current-Sensing
T2 - IEICE TRANSACTIONS on Electronics
SP - 1941
EP - 1950
AU - Kuo-Hsing CHENG
AU - Chia-Wei SU
AU - Hsin-Hsin KO
PY - 2008
DO - 10.1093/ietele/e91-c.12.1941
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E91-C
IS - 12
JA - IEICE TRANSACTIONS on Electronics
Y1 - December 2008
AB - In this paper, a high accuracy, high efficiency, and wide current-sensing range current-mode PWM buck converter with on-chip current-sensing technique is presented. The proposed current-sensing circuit uses simple switch technique to achieve high accuracy, high power efficiency, and high line regulation. The test chip is fabricated using TSMC 0.18 µm 1P6M 3.3 V CMOS process. The measurement results show that the buck converter with on-chip current-sensing circuit can operate from 700 kHz to 3 MHz with a supply voltage of 1.5-5 V and the output voltage of 0.5-4.5 V for lithium ion battery applications. The accuracy of the proposed current-sensing circuit is exceeds 89.8% for load current from 50 mA to 500 mA and for temperature from 0C to 100C. The peak power efficiency of the buck converter is up to 95.5%.
ER -