A Periodically Refreshed Capacitive Floating Level Shifter for Conditional Switching Applications

Junyoung Maeng, Minseob Shim, Junwon Jeong, Inho Park, Chulwoo Kim

Research output: Contribution to journalArticlepeer-review

Abstract

This letter presents a periodically refreshed capacitive floating level shifter (CFLS) for applications that require a conditional switching signal. The proposed structure can generate a floating signal without additional bias voltage, and all coupling capacitors (CCs) can be simultaneously refreshed. Digital low-dropout (DLDOs) regulators are integrated to show how the leakage current from a CC affects the DLDOs that are driven by conventional and proposed CFLSs. Results are measured according to the temperature and supply voltage. With a 28-nm CMOS process, the proposed CFLS achieves a delay of 8.9 ns including the I/O buffer delay and an energy consumption of 788 fJ per cycle at VDD = 0.9 V.

Original languageEnglish
Article number9132691
Pages (from-to)1264-1268
Number of pages5
JournalIEEE Transactions on Power Electronics
Volume36
Issue number2
DOIs
Publication statusPublished - 2021 Feb

Keywords

  • Capacitively coupled level shifter (LS)
  • conditional switching signal
  • nonperiodic signal
  • periodic charge refresh

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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