Document Detail

An Adaptive Reconfigurable Active Voltage Doubler/Rectifier for Extended-Range Inductive Power Transmission.
MedLine Citation:
PMID:  24633369     Owner:  NLM     Status:  Publisher    
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.
Hyung-Min Lee; Maysam Ghovanloo
Related Documents :
18657839 - Ultrasound frame rate requirements for cardiac elastography: experimental and in vivo r...
7364549 - Temporal sequence discrimination of dichotic tones: the effect of frequency.
24232649 - Light dependence of sexual agglutinability in chlamydomonas eugametos.
11744649 - Effects of stimulation frequencies and patterns on performance of repetitive, nonisomet...
2147179 - Effects of continuous low-frequency pacing on immature canine diaphragm.
21601859 - Entrapment of adult fingers between window glass and seal entry of a motor vehicle side...
23492379 - Interactive animation of 4d performance capture.
24521749 - Change in frequency of the maxillary midline diastema appearing in photographs of cauca...
2230799 - Labeling of retina and optic tectum phospholipids in chickens exposed to light or dark.
Publication Detail:
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:  -    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Grant Support

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

Previous Document:  Metabotropic glutamate receptor-1 as a novel target for the antiangiogenic treatment of breast cance...
Next Document:  Coordinated activation of PTA-ACS and TCA cycles strongly reduces overflow metabolism of acetate in ...