A new class of integrated CMOS rectifiers with improved PVT-compensated efficiency
A new class of integrated CMOS rectifiers with improved PVT-compensated efficiency
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具有改进的 PVT 补偿效率的新型集成 CMOS 整流器
DOI：
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发表时间：
2012
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通讯作者：
M. Ortmanns
中科院分区：
文献类型：
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作者：
Hongcheng Xu;M. Ortmanns
本文综述了一类具有改进pvt补偿效率的新型集成CMOS整流器，并提出了一种新型电压四倍器。通过利用阈值补偿技术，所提出的电路能够在低输入幅度下仅使用标准阈值器件即可实现高电压转换效率（VCE）和功率转换效率（PCE）。此外，整流器的性能是自补偿的过程和温度，这是通过精确跟踪二极管阈值漂移辅助假人来实现的。整流器采用AMS 0.35μm m /2P标准CMOS工艺实现，在13.56MHz的输入频率下显示了模拟性能。对于所提出的电压四倍器，在0.8V输入幅值和2kΩ负载电阻下，VCE和PCE分别为48%和49%，可以实现1.52V的输出电压。与先前发表的结果相比，VCE和PCE的改进幅度分别高达358%和351%，此外，在100°C的温度范围内，其输出电压的最大偏差低至162mV，比传统结构高出近一个数量级。
We review in this paper a new class of integrated CMOS rectifiers with improved PVT-compensated efficiency and propose also a new voltage quadrupler. By utilizing a threshold compensation technique, the presented circuits are able to achieve both high voltage conversion efficiency (VCE) and power conversion efficiency (PCE) with only standard threshold devices at low input amplitudes. Besides, the performance of the rectifiers is selfcompensated over process and temperature, which is achieved by precisely tracking the diode threshold drift with an auxiliary dummy. The rectifiers are implemented in AMS 0.35μm 4M/2P standard CMOS process and the simulated performance is shown at an input frequency of 13.56MHz. For the proposed voltage quadrupler, at 0.8V input amplitude and 2kΩ load resistor, output voltage of 1.52V can be achieved with VCE and PCE of 48% and 49%, respectively. As compared to previously published results, the improvement is up to 358% in VCE and 351% in PCE. Besides, the maximum deviation in its output voltage is as low as 162mV over 100°C temperature span, which outperforms the conventional structure by almost an order of magnitude.