Phase control for resonant DC-DC converter with class-DE inverter and class-E rectifier

In this paper, a phase control scheme for Class-DE-E dc-dc converter is proposed and its performance is clarified. The proposed circuit is composed of phase-controlled Class-DE inverter and Class-E rectifier. The proposed circuit achieves the fixed frequency control without frequency harmonics lower...

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Bibliographic Details
Published in:IEEE transactions on circuits and systems. 1, Fundamental theory and applications Fundamental theory and applications, 2006-02, Vol.53 (2), p.254-263
Main Authors: Sekiya, H., Nemoto, S., Jianming Lu, Yahagi, T.
Format: Article
Language:English
Subjects:
Circuits
Class-DE inverter
Class-E rectifier
Computational efficiency
Computing time
Conversion
Converters
DC-DC power converters
Efficiency
Electric currents
Electric potential
Frequency control
Inverters
numerical calculation
Phase control
Power conversion
Rectifiers
Resonance
resonant dc-dc converter
Switching converters
Switching frequency
Voltage
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Summary:In this paper, a phase control scheme for Class-DE-E dc-dc converter is proposed and its performance is clarified. The proposed circuit is composed of phase-controlled Class-DE inverter and Class-E rectifier. The proposed circuit achieves the fixed frequency control without frequency harmonics lower than the switching frequency. Moreover, it is possible to achieve the continuous control in a wide range of the line and load variations. The output voltage decreases in proportion to the increase of the phase shift. The proposed converter keeps the advantages of Class-DE-E dc-dc converter, namely, a high power conversion efficiency under a high-frequency operation and low switch-voltage stress. Especially, high power conversion efficiency can be kept for narrow range control. We present numerical calculations for the design and the numerical analyses to clarify the characteristics of the proposed control. By carrying out circuit experiments, we show a quantitative similarity between the numerical predictions and the experimental results. In our experiments, the measured efficiency is over 84% with 2.5 W output power for 1.0-MHz operating frequency at the nominal operation. Moreover, the output voltage is regulated from 100% to 39%, keeping over 57% power conversion efficiency by using the proposed control scheme.
ISSN:1549-8328
1057-7122
1558-0806
DOI:10.1109/TCSI.2005.855741