Presentation 2020-08-06
A charge pump circuit for very low voltage applications
Keiichi Nagaoka, Cong-Kha Pham,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) In recent years, energy harvesting, which harvests electric power from energy existing in the environment, has attracted attention as a power supply method for many wireless sensors. However, the voltage obtained by energy harvesting is very small. In this work, we propose a charge pump circuit for very low voltage that can boost from 100mV. The load current range was expanded by connecting in parallel a conventional circuit with improved gate wiring of the transistors in the charge pump. As a result of designing the proposed circuit with a 180 nm CMOS process, the input voltage 100mV was boosted to 375 mV with no load current. The maximum power conversion efficiency was 24.5% when the load current was 23 nA.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Charge Pump Circuit / Low Voltage / Energy Harvesting
Paper # SDM2020-4,ICD2020-4
Date of Issue 2020-07-30 (SDM, ICD)

Conference Information
Committee ICD / SDM / ITE-IST
Conference Date 2020/8/6(2days)
Place (in Japanese) (See Japanese page)
Place (in English) Online
Topics (in Japanese) (See Japanese page)
Topics (in English) Analog, Mixed Analog and Digital, RF, and Sensor Interface, Low Voltage/Low Power Techniques, Novel Devices/Circuits, and the Applications
Chair Makoto Nagata(Kobe Univ.) / Hiroshige Hirano(TowerJazz Panasonic) / Junichi Akita(Kanazawa Univ.)
Vice Chair Masafumi Takahashi(Toshiba-memory) / Shunichiro Ohmi(Tokyo Inst. of Tech.) / 池辺 将之(北大) / 廣瀬 裕(パナソニック)
Secretary Masafumi Takahashi(Socionext) / Shunichiro Ohmi(Osaka Univ.) / 池辺 将之(AIST) / 廣瀬 裕(Nihon Univ.)
Assistant Koji Nii(Floadia) / Kosuke Miyaji(Shinshu Univ.) / Takeshi Kuboki(Kyushu Univ.) / Taiji Noda(Panasonic) / Tomoyuki Suwa(Tohoku Univ.) / 小室 孝(埼玉大) / 下ノ村 和弘(立命館大) / 香川 景一郞(静岡大) / 徳田 崇(東工大) / 黒田 理人(東北大) / 船津 良平(NHK) / 山下 雄一郎(TSMC)

Paper Information
Registration To Technical Committee on Integrated Circuits and Devices / Technical Committee on Silicon Device and Materials / Technical Group on Information Sensing Technologies
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) A charge pump circuit for very low voltage applications
Sub Title (in English)
Keyword(1) Charge Pump Circuit
Keyword(2) Low Voltage
Keyword(3) Energy Harvesting
1st Author's Name Keiichi Nagaoka
1st Author's Affiliation University of Electro-Communications(UEC)
2nd Author's Name Cong-Kha Pham
2nd Author's Affiliation University of Electro-Communications(UEC)
Date 2020-08-06
Paper # SDM2020-4,ICD2020-4
Volume (vol) vol.120
Number (no) SDM-126,ICD-127
Page pp.pp.15-18(SDM), pp.15-18(ICD),
#Pages 4
Date of Issue 2020-07-30 (SDM, ICD)