Modelling of maximum power efficiency of charge pump circuits

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

3 Scopus Citations
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Author(s)

  • Oi-Ying Wong
  • Hei Wong
  • Wing-Shan Tam
  • Chi-Wah Kok

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)1233-1234
Journal / PublicationElectronics Letters
Volume50
Issue number17
Publication statusPublished - 14 Aug 2014

Abstract

The loss estimation in a switched-capacitor DC-DC converter has caused much controversy because of the uncertainty of the contribution of device parasitics to the power efficiency of a converter. Beginning from a simple equivalent circuit model, a closed-form solution to the maximum achievable power efficiency of a converter in which both the effects of parasitic resistance and capacitance are taken into account is presented. It has been observed that the peak power efficiency of a Dickson charge pump depends mainly on the equivalent parasitic capacitance of a given technology and its operation mode, which is governed by the choices of the coupling capacitance, onresistance of the switch, as well as the operation frequency of the circuit. © The Institution of Engineering and Technology 2014.

Citation Format(s)

Modelling of maximum power efficiency of charge pump circuits. / Wong, Oi-Ying; Wong, Hei; Tam, Wing-Shan; Kok, Chi-Wah.

In: Electronics Letters, Vol. 50, No. 17, 14.08.2014, p. 1233-1234.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal