Single‐stage AC–DC voltage regulator for 15 W wireless charging
A single‐stage AC–DC voltage regulator is proposed to enhance the power efficiency while at the same time reducing the design complicity of the entire system. Unlike the traditional two‐stage AC–DC regulator, a pulse‐width modulation control algorithm is integrated to switch the working mode of an a...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2017-03-01
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| Series: | Electronics Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1049/el.2016.4581 |
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| Summary: | A single‐stage AC–DC voltage regulator is proposed to enhance the power efficiency while at the same time reducing the design complicity of the entire system. Unlike the traditional two‐stage AC–DC regulator, a pulse‐width modulation control algorithm is integrated to switch the working mode of an active rectifier between a charging mode and a zero mode to maintain the output voltage at 5 V. This in turn efficiently eliminates the need for a DC–DC converter following the rectifier. Besides, a coupled full‐bridge active rectifier with high speed comparator dramatically reduces the power loss of the circuit. Experiment results using a 0.35 µm technology and a PCB circuit demonstrate the advantages of the proposed design. |
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| ISSN: | 0013-5194 1350-911X |