A switched‐capacitor‐assisted wireless power transfer system with regulating TX power and fast global loop
Abstract 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 bo...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2022-06-01
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| Series: | Electronics Letters |
| Online Access: | https://doi.org/10.1049/ell2.12496 |
| _version_ | 1811159812170317824 |
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| author | Chenyu Huang Yan Lu Chenchang Zhan Rui P. Martins |
| author_facet | Chenyu Huang Yan Lu Chenchang Zhan Rui P. Martins |
| author_sort | Chenyu Huang |
| collection | DOAJ |
| description | Abstract 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. |
| first_indexed | 2024-04-10T05:48:34Z |
| format | Article |
| id | doaj.art-572c76a00dd349bc90d02fdc9f4418a7 |
| institution | Directory Open Access Journal |
| issn | 0013-5194 1350-911X |
| language | English |
| last_indexed | 2024-04-10T05:48:34Z |
| publishDate | 2022-06-01 |
| publisher | Wiley |
| record_format | Article |
| series | Electronics Letters |
| spelling | doaj.art-572c76a00dd349bc90d02fdc9f4418a72023-03-05T10:20:32ZengWileyElectronics Letters0013-51941350-911X2022-06-01581247747910.1049/ell2.12496A switched‐capacitor‐assisted wireless power transfer system with regulating TX power and fast global loopChenyu Huang0Yan Lu1Chenchang Zhan2Rui P. Martins3State Key Laboratory of Analog Mixed‐Signal VLSI Institute of Microelectronics, and DECE‐FST University of Macau Macao ChinaState Key Laboratory of Analog Mixed‐Signal VLSI Institute of Microelectronics, and DECE‐FST University of Macau Macao ChinaSchool of Microelectronics Southern University of Science and Technology Shenzhen ChinaState Key Laboratory of Analog Mixed‐Signal VLSI Institute of Microelectronics, and DECE‐FST University of Macau Macao ChinaAbstract 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.https://doi.org/10.1049/ell2.12496 |
| spellingShingle | Chenyu Huang Yan Lu Chenchang Zhan Rui P. Martins A switched‐capacitor‐assisted wireless power transfer system with regulating TX power and fast global loop Electronics Letters |
| title | A switched‐capacitor‐assisted wireless power transfer system with regulating TX power and fast global loop |
| title_full | A switched‐capacitor‐assisted wireless power transfer system with regulating TX power and fast global loop |
| title_fullStr | A switched‐capacitor‐assisted wireless power transfer system with regulating TX power and fast global loop |
| title_full_unstemmed | A switched‐capacitor‐assisted wireless power transfer system with regulating TX power and fast global loop |
| title_short | A switched‐capacitor‐assisted wireless power transfer system with regulating TX power and fast global loop |
| title_sort | switched capacitor assisted wireless power transfer system with regulating tx power and fast global loop |
| url | https://doi.org/10.1049/ell2.12496 |
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