A low-power CMOS voltage boosting rectifier for wireless power transfer applications
A low-power CMOS voltage boosting rectifier for wireless power transfer applications
复制标题
适用于无线功率传输应用的低功耗 CMOS 升压整流器
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
Fana Mahbub
中科院分区：
文献类型：
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作者：
N. Tasneem;Saket R. Suri;Fana Mahbub
无线电力传输的应用领域正在迅速增长，因此需要设计高效的整流器来将交流电压信号转换为直流电压传输到负载。在无线功率传输模块中，整流器是最重要的部件之一，需要对其进行优化设计，以便在较低的射频输入功率下提供高效率的高直流输出电压。本文提出了一种采用肖特基二极管和多晶硅电容的10级整流电路设计，采用0.5μm标准工艺。仿真结果表明，该整流器可以将输入电压低至100 mV、频率为7.2 MHz的射频信号转换为160 MVDC的输出电压。当输入交流信号为200 mV时，可获得1.55 VDC信号。这一性能验证了整流器与无线功率传输模块的集成，这将提高整体功率转换效率。
The area of applications for wireless power transmission is increasing rapidly, so is the need for designing efficient rectifiers to convert an AC voltage signal to a DC voltage to deliver to the load. In a wireless power transfer module, rectifier, being one of the most important components, needs to be designed in an optimized manner to provide high DC output voltage with a high efficiency from a low RF input power. In this paper, a 10-stage rectifier design using Schottky diodes and poly2 over poly capacitors in 0.5 μm standard CMOS process is presented. Simulation results show that the rectifier can convert an RF signal with an input voltage of as low as 100 mV at 7.2 MHz frequency to an output voltage of 160 mVDc. It achieves 1.55 Vdc signal for an input ac signal of 200 mV. This performance verifies the integration of the rectifier to the wireless power transfer module that would improve the overall power conversion efficiency.