A single-stage direct-conversion AC-DC converter for inductively powered application
| Autor: | Liter Siek, Qiong Wei Low, Mi Zhou |
|---|---|
| Přispěvatelé: | School of Electrical and Electronic Engineering |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Pulse-frequency modulation
Inductively Powered Application Materials science business.industry 020208 electrical & electronic engineering Energy conversion efficiency Electrical engineering 020206 networking & telecommunications 02 engineering and technology Voltage regulator ON-/OFF-mode Controller Rectifier Hardware and Architecture Engineering::Electrical and electronic engineering [DRNTU] 0202 electrical engineering electronic engineering information engineering Maximum power transfer theorem Wireless power transfer Voltage regulation Electrical and Electronic Engineering business Software Pulse-width modulation |
| Popis: | An innovative single-stage ac-dc converter for low power, low frequency skin depth wireless power transfer is presented. The power conversion efficiency (PCE) of a wireless power receiver is limited by the cascaded two-stage design, which constitutes a rectifier and a voltage regulator. Owing to the proposed ON-/OFF-mode regulating rectifier, the voltage rectification and regulation are achieved simultaneously in one stage, thereby improving the PCE substantially. The output voltage regulation is accomplished by incorporating the pulse skipping modulation and the pulse frequency modulation control into the structure. In addition, there is no bulky inductor utilized in the proposed one-stage design. Therefore, the footprint and cost of the receiver can be minimized effectively. The proposed design has been fabricated in 0.18-μm standard CMOS process. Measurement results show that a peak power transfer efficiency of 93.48% is achieved at a regulated output voltage of 2 V in an output power range of 2-80 mW. ASTAR (Agency for Sci., Tech. and Research, S’pore) Accepted version |
| Databáze: | OpenAIRE |
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