A Low-Voltage Charge Pump with High Pumping Efficiency

Taegun Yim, Seungjin Lee, Choongkeun Lee, Hongil Yoon

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)


A low voltage charge pump with high pumping efficiency is proposed in this paper. To get high pumping efficiency, the proposed circuit uses 2 branches cross coupled structure. To eliminate the body effect and threshold voltage drops, PMOS transistors are used as Charge Transfer Switch (CTS). The inverters below and above the CTS PMOS for controlling the gate of CTS PMOS properly. Undesired charge transfer flows higher voltage node voltage to lower voltage node is removed as the NMOS transistor and PMOS transistor below and above the CTS PMOS turn off during the clock transition. Furthermore, the time when those NMOS transistor and PMOS transistor are both off is short and due to the cross coupled wiring, the fast gate control would be able to made by present and previous stage. So that the cross coupled CTS charge pump has higher pumping efficiency than conventional circuits. The simulation results show that the proposed circuit's performance is better than other circuits.

Original languageEnglish
Title of host publicationProceedings of TENCON 2018 - 2018 IEEE Region 10 Conference
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages5
ISBN (Electronic)9781538654576
Publication statusPublished - 2018 Jul 2
Event2018 IEEE Region 10 Conference, TENCON 2018 - Jeju, Korea, Republic of
Duration: 2018 Oct 282018 Oct 31

Publication series

NameIEEE Region 10 Annual International Conference, Proceedings/TENCON
ISSN (Print)2159-3442
ISSN (Electronic)2159-3450


Conference2018 IEEE Region 10 Conference, TENCON 2018
Country/TerritoryKorea, Republic of

Bibliographical note

Publisher Copyright:
© 2018 IEEE.

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Electrical and Electronic Engineering


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