Design Optimization of High Voltage Generation for Memristor Electroforming in 28nm CMOS

Research output: Contribution to book/Conference proceedings/Anthology/ReportConference contributionContributedpeer-review

Contributors

  • M. Shamookh - , Jülich Research Centre, Hamburg University of Technology (Author)
  • A. Ashok - , Jülich Research Centre (Author)
  • A. Zambanini - , Jülich Research Centre (Author)
  • A. Gelaschus - , Hamburg University of Technology (Author)
  • C. Grewing - , Jülich Research Centre (Author)
  • A. Bahr - , Chair of Biomedical Electronics (Author)
  • S. Van Waasen - , Jülich Research Centre, University of Duisburg-Essen (Author)

Abstract

The process of electroforming (EF) a memristor involves setting the channel resistance via current compliance Icc. This EF phase varies in duration based on the EF voltage VEF, requiring high voltage (HV) as a trade-off with EF time. To achieve CMOS-memristor scalable co-integration, on-chip HV-generation is essential. This study presents an analytical design approach for a proposed three-stage charge pump (CP), focusing on achieving optimal balance among efficiency, output ripple, Icc, and minimal capacitor. The proposed 28 nm three-stage CP requires 1.8 V IO devices for 3.35 V output voltage and achieves 46.5% voltage conversion ratio (VCR). It includes a ripple reduction stage to ensure a ripple below 6mV with high current demands of up to 200 μ A, without an additional space for over-voltage protection within the CP core. Corners and Monte Carlo simulations are conducted to validate the robustness of the design. By eliminating HV-transistors or multi-phase clocks, the design effectively reduces system costs, enhancing the efficiency and scalability of emerging neuromorphic systems.

Details

Original languageEnglish
Title of host publication2024 31st IEEE International Conference on Electronics, Circuits and Systems, ICECS 2024
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages4
ISBN (electronic)979-8-3503-7720-0
ISBN (print)979-8-3503-7721-7
Publication statusPublished - 2024
Peer-reviewedYes

Publication series

SeriesProceedings of the IEEE International Conference on Electronics, Circuits, and Systems
ISSN2994-5755

Conference

Title31st IEEE International Conference on Electronics Circuits and Systems
Abbreviated titleICECS 2024
Conference number31
Duration18 - 20 November 2024
Website
Degree of recognitionInternational event
LocationProuvé Convention Center
CityNancy
CountryFrance

External IDs

ORCID /0000-0001-8012-6794/work/186621458

Keywords

ASJC Scopus subject areas

Keywords

  • charge pump, current compliance, electroforming (EF), electroforming time, high voltage generator, memristor, neuromor-phic computing, output ripple