A 13.56 MHz Current-Mode Wireless Power Receiver With Energy-Investment Capability

A 13.56 MHz current-mode wireless power receiver with energy-investment capability is presented. An investing voltage controller and a zero-crossing current switching controller are presented to control the switching timing of the power MOSFETs. Both the controllers use the sample-and-hold circuits...

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Bibliographic Details
Published inIEEE transactions on circuits and systems. II, Express briefs Vol. 67; no. 2; pp. 205 - 209
Main Authors Kuo, Chung-Jen, Liu, Shen-Iuan
Format Journal Article
LanguageEnglish
Published New York IEEE 01.02.2020
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Clocks
CMOS
Control systems
coupled inductor
Current mode
Delay lines
Energy conversion efficiency
Inductors
Investment
MOSFETs
power conversion efficiency
Receivers
Switching
Timing
Voltage controllers
Wireless communication
wireless power
Zero current switching
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Summary:A 13.56 MHz current-mode wireless power receiver with energy-investment capability is presented. An investing voltage controller and a zero-crossing current switching controller are presented to control the switching timing of the power MOSFETs. Both the controllers use the sample-and-hold circuits and the digital controlled delay lines to tolerate the process variations. The highest operation frequency of the controllers is 6.78 MHz. This chip is fabricated in a 0.18-μm CMOS process. It achieves a peak power conversion efficiency of 67.1% when the input power is 6 mW.
ISSN:1549-7747
1558-3791
DOI:10.1109/TCSII.2019.2905279