A switched-capacitor-assisted wireless power transfer system with regulating TX power and fast global loop

Huang，Chenyu1,2; Lu，Yan1; Zhan，Chenchang2,3; Martins，Rui P.1

2022

10.1049/ell2.12496

ELECTRONICS LETTERS   影响因子和分区

0013-5194

1350-911X

Wireless power transfer systems demand a regulating transmitter (TX) for global loop control and also a regulating receiver (RX) for its local loop. This design broadens the TX output power range, by merging a switched capacitor (SC) circuit with only 3 switches and 1 flying capacitor to boost the output power of the Class-D power amplifier. In addition, the transmitting power can be regulated by the duty ratio of the SC, improving the end-to-end power transfer efficiency under different load conditions. Moreover, the system obtains fast load transient response, with the help of a light-to-heavy load transient enhancement scheme in the TX and the hysteretic control in the RX. Designed in a 0.18-μm BCD process, this work achieves 3.1 W maximum RX output power, 67.6% peak total efficiency, and 50 μs response time during the light-to-heavy load transient simulation.

SCI ; EI

英语

通讯

WOS:000794205500001

20222112152269

Efficiency ; Energy transfer ; Inductive power transmission ; Power amplifiers ; Transient analysis

Electric Power Transmission:706.1.1 ; Amplifiers:713.1 ; Telecommunication; Radar, Radio and Television:716 ; Optical Communication:717 ; Telephone Systems and Related Technologies; Line Communications:718 ; Production Engineering:913.1

ENGINEERING

2-s2.0-85130473232

Scopus

1.State Key Laboratory of Analog Mixed-Signal VLSI,Institute of Microelectronics,and DECE-FST,University of Macau,Macao
2.School of Microelectronics,Southern University of Science and Technology,Shenzhen,China
3.Engineering Research Center of Integrated Circuits for Next-Generation Communications,Ministry of Education,Shenzhen,China

Huang，Chenyu,Lu，Yan,Zhan，Chenchang,et al. A switched-capacitor-assisted wireless power transfer system with regulating TX power and fast global loop[J]. ELECTRONICS LETTERS,2022,58:477-479.

Huang，Chenyu,Lu，Yan,Zhan，Chenchang,&Martins，Rui P..(2022).A switched-capacitor-assisted wireless power transfer system with regulating TX power and fast global loop.ELECTRONICS LETTERS,58,477-479.

Huang，Chenyu,et al."A switched-capacitor-assisted wireless power transfer system with regulating TX power and fast global loop".ELECTRONICS LETTERS 58(2022):477-479.