A Reconfigurable Bidirectional Wireless Power Transceiver for Battery-to-Battery Wireless Charging
Huang,Mo1,2; Lu,Yan1; Martins,Rui P.3
Source PublicationIEEE Transactions on Power Electronics
AbstractBattery-to-battery (B2B) wireless charging can take place in many scenarios, such as using a mobile phone to charge another mobile phone, wearable devices, or low-power sensor nodes. To facilitate this wireless power transfer (WPT) function with the minimum additional cost, we propose a monolithic reconfigurable bidirectional WPT transceiver designed for the first time in CMOS, which can be reconfigured between a differential class-D power amplifier (PA) and a full-wave rectifier. Meanwhile, we employed a maximum current charging mode to maximize the B2B charging efficiency, by directly charging the loading battery with the rectifier, and by powering the PA with the sourcing battery. Then, we reduced the number of cascaded WPT stages from five in the conventional design to three. This bidirectional WPT transceiver fabricated in 0.35 μm CMOS occupies 3.9 mm of silicon area. The bidirectional WPT function, verified at 6.78 MHz with only one off-chip capacitor, exhibits peak efficiencies of 91.5% and 58.6% for the receiver and the overall system, respectively, when the output power is 1.55 W.
KeywordBattery charger bidirectional wireless charging class-d power amplifier (PA) maximum current charging mode (MCCM) receiver rectifier transceiver transmitter voltage doubler wireless power transfer (WPT)
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Scopus ID2-s2.0-85056609576
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Cited Times [WOS]:16   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Corresponding AuthorLu,Yan
Affiliation1.State Key Laboratory of Analog and Mixed-Signal VLSI,University of Macau,Macao
2.School of Electronics and Information Engineering,South China University of Technology,Guangzhou,510640,China
3.Instituto Superior Tecnico,Universidade de Lisboa,Lisbon,1649-004,Portugal
First Author AffilicationUniversity of Macau
Corresponding Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Huang,Mo,Lu,Yan,Martins,Rui P.. A Reconfigurable Bidirectional Wireless Power Transceiver for Battery-to-Battery Wireless Charging[J]. IEEE Transactions on Power Electronics,2019,34(8):7745-7753.
APA Huang,Mo,Lu,Yan,&Martins,Rui P..(2019).A Reconfigurable Bidirectional Wireless Power Transceiver for Battery-to-Battery Wireless Charging.IEEE Transactions on Power Electronics,34(8),7745-7753.
MLA Huang,Mo,et al."A Reconfigurable Bidirectional Wireless Power Transceiver for Battery-to-Battery Wireless Charging".IEEE Transactions on Power Electronics 34.8(2019):7745-7753.
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