Optimal Design of a Voltage Regulator Based on Gyrator Switched-Resonator Converter IC

Eli Abramov, Alon Cervera, Mor Mordechai Peretz

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


This paper details efficiency analysis and characteristics of a gyrator switched-resonator converter (GSwRC) IC. Followed by an efficiency analysis, this paper introduces an optimized size-efficiency design procedure for IC realization of the converter. In area-sensitive applications, the optimization method combined with the converter's benefits presents an attractive approach for power delivery in point-of-load applications. To verify the analytical framework, two sets of bridge-type GSwRCs prototypes have been evaluated. One is an on-chip bridge GSwRC that has been fabricated in 0.18- μm 5-V CMOS process, according to the principles detailed in this paper, and verified through postlayout analysis and experimental measurements of the fabricated IC. The second prototype is a discrete GSwRC that is used for further validation of the theoretical framework. In addition, the analysis has been verified through a design example of a multiphase resonant switched-capacitor converter. The fabricated IC prototype operation is demonstrated with 1.5 A, delivering up to 2.25 W from 3-V input voltage, with peak efficiency at 85%. A fully monolithic controller to regulate the output voltage is described and implemented on-chip by an automated synthesis process and place-and-route tools.

Original languageEnglish
Pages (from-to)549-562
Number of pages14
JournalIEEE Journal of Emerging and Selected Topics in Power Electronics
Issue number2
StatePublished - 1 Jun 2018


  • IC
  • on-chip voltage regulator
  • optimization
  • power supply on-chip
  • resonant switched-capacitor converter (SCC)
  • size efficiency
  • switched-resonator converters
  • zero-current switching (ZCS)

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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