Document Detail


An Adaptive Reconfigurable Active Voltage Doubler/Rectifier for Extended-Range Inductive Power Transmission.
MedLine Citation:
PMID:  24633369     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
We present an adaptive reconfigurable active voltage doubler (VD)/rectifier (REC) (VD/REC) in standard CMOS, which can adaptively change its topology to either a VD or a REC by sensing the output voltage, leading to more robust inductive power transmission over an extended range. Both active VD and REC modes provide much lower dropout voltage and far better power conversion efficiency (PCE) compared to their passive counterparts by adopting offset-controlled high-speed comparators that drive the rectifying switches at proper times in the high-frequency band. We have fabricated the active VD/REC in a 0.5-µm 3-metal 2-poly CMOS process, occupying 0.585 mm(2) of chip area. In an exemplar setup, VD/REC extended the power transmission range by 33% (from 6 to 8 cm) in relative coil distance and 41.5% (from 53° to 75°) in relative coil orientation compared to using the REC alone. While providing 3.1-V dc output across a 500-Ω load from 2.15- (VD) and 3.7-V (REC) peak ac inputs at 13.56 MHz, VD/REC achieved measured PCEs of 70% and 77%, respectively.
Authors:
Hyung-Min Lee; Maysam Ghovanloo
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Publication Detail:
Type:  JOURNAL ARTICLE    
Journal Detail:
Title:  IEEE transactions on circuits and systems. II, Express briefs : a publication of the IEEE Circuits and Systems Society     Volume:  -     ISSN:  1549-7747     ISO Abbreviation:  IEEE Trans Circuits Syst II Express Briefs     Publication Date:  2012  
Date Detail:
Created Date:  2014-3-17     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101542815     Medline TA:  IEEE Trans Circuits Syst II Express Briefs     Country:  -    
Other Details:
Languages:  ENG     Pagination:  286-288     Citation Subset:  -    
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MeSH Terms
Descriptor/Qualifier:
Grant Support
ID/Acronym/Agency:
R21 EB009437/EB/NIBIB NIH HHS

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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