Radiation-Hardened PLL with a Switchable Dual Modular Redundancy Structure

• KIM SinNyoung

  Department of Communications and Computer Engineering, Kyoto University

• TSUCHIYA Akira

  Department of Communications and Computer Engineering, Kyoto University

• ONODERA Hidetoshi

  Department of Communications and Computer Engineering, Kyoto University JST, CREST

Abstract

This paper proposes a radiation-hardened phase-locked loop (RH-PLL) with a switchable dual modular redundancy (DMR) structure. After radiation strikes, unhardened PLLs suffer clock perturbations. Conventional RH-PLLs have been proposed to reduce recovery time after perturbation. However, this recovery still requires tens of clock cycles. Our proposal involves ‘detecting’ and ‘switching’, rather than ‘recovering’ from clock perturbation. Detection speed is crucial for robust perturbation-immunity. We identify types of clock perturbation and then propose a set of detectors to detect each type. With this method, the detectors guarantee high-speed detection that leads to perturbation-immune switching from a radiated clock to an undistorted clock. The proposed RH-PLL was fabricated and then verified with a radiation test on real silicon.

Journal

• IEICE Transactions on Electronics

  IEICE Transactions on Electronics E97.C (4), 325-331, 2014

  The Institute of Electronics, Information and Communication Engineers

Keywords

• radiation-hardened phase-locked loop (RH-PLL)
• PLL
• radiation-hardened-by-design (RHBD)
• dual modular redundancy (DMR)

Details

• CRID: 1390001204377865472
• NII Article ID: 130003394725
• DOI: 10.1587/transele.e97.c.325
• ISSN: 17451353
• ISSN: 09168524
• Web Site: https://www.jstage.jst.go.jp/article/transele/E97.C/4/E97.C_325/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed