低功耗压电能收集与管理电路研究
发布时间：2018-10-31 18:41
【摘要】：在已有的太阳能、振动、温差等环境能量收集技术中,振动能收集是当下的一个热点。本文着眼于压电方式的振动能收集与管理,并提出两个压电能收集与管理电路。 第一个压电能收集与管理电路是基于分立器件设计。它包含一个P-SSHI电路、个控制电路和一个DC-DC电路。该P-SSHI电路只需要两个开关,采用低功耗二极管BAT54S (VD=0.32V@IF=1nA)作为整流器,仿真的结果显示其收集的能量相比传统的AC-DC电路提高5倍以上；其中的DC-DC电路工作在电流断续模式下(DCM),这有利于降低功耗,提高轻载效率。其仿真输出电压分别为0.36%精度的3.3V和0.2%精度的1.8V。 第二个压电能收集与管理电路是基于无锡上华CSMC.5μm工艺设计。它包含一个1个信号调理电路、一个控制电路、一个P-SSHI电路和一个DC-DC电路。P-SSHI电路中采用MOS管代替二极管(VD=0.7V@IF=1mA),也不需要复杂的控制信号。仿真的结果显示,其收集的能量相比传统的AC-DC电路提高6倍以上；其中的DC-DC电路中采用MOS管同步整流代替二极管有利于降低功耗,仿真结果显示在恒定的基准电压下,输出电压分别精度为1.03%的3.3V,能量效率达到84.3%和精度为1.05%的1.8V,能量效率达到64.1%。 对压电能收集与管理电路的芯片设计,本文还提出了一个改进的纳功耗基准电压源。其温度系数为51.32ppm/℃,电压系数为0.32%/V,PSRR为-52dB(@100Hz),所需要消耗功率为790nW,相对工艺变化为士6%。
[Abstract]:Among the existing environmental energy collection technologies, such as solar energy, vibration, temperature difference, vibration energy collection is a hot spot. This paper focuses on the vibration energy collection and management of piezoelectric mode, and proposes two piezoelectric energy collection and management circuits. The first piezoelectric energy collection and management circuit is based on discrete devices. It includes a P-SSHI circuit, a control circuit and a DC-DC circuit. The P-SSHI circuit only needs two switches. The low-power diode BAT54S (VD=0.32V@IF=1nA) is used as the rectifier. The simulation results show that the energy collected by the circuit is more than 5 times higher than that of the traditional AC-DC circuit. The DC-DC circuit works in current intermittent mode (DCM), which is helpful to reduce power consumption and improve light load efficiency. The simulated output voltage is 3.3V of 0.36% precision and 1.8V of 0.2wt% precision. The second piezoelectric energy collection and management circuit is based on Wuxi Shanghua CSMC.5 渭 m process design. It consists of a signal conditioning circuit, a control circuit, a P-SSHI circuit and a DC-DC circuit. In the P-SSHI circuit, the MOS tube is used instead of the diode (VD=0.7V@IF=1mA), and the complex control signal is not required. The simulation results show that the energy collected is more than 6 times higher than that of the traditional AC-DC circuit. In the DC-DC circuit, using synchronous rectifier with MOS transistor instead of diode is helpful to reduce power consumption. The simulation results show that the output voltage is 3.3V with the accuracy of 1.03% under the constant reference voltage. The energy efficiency is 84.3% and the accuracy is 1.05%, and the energy efficiency is 64.1%. For the chip design of piezoelectric energy collection and management circuit, an improved nanowatt-consumption reference voltage source is also proposed in this paper. The temperature coefficient is 51.32ppm/ 鈩，
本文编号：2303191
[Abstract]:Among the existing environmental energy collection technologies, such as solar energy, vibration, temperature difference, vibration energy collection is a hot spot. This paper focuses on the vibration energy collection and management of piezoelectric mode, and proposes two piezoelectric energy collection and management circuits. The first piezoelectric energy collection and management circuit is based on discrete devices. It includes a P-SSHI circuit, a control circuit and a DC-DC circuit. The P-SSHI circuit only needs two switches. The low-power diode BAT54S (VD=0.32V@IF=1nA) is used as the rectifier. The simulation results show that the energy collected by the circuit is more than 5 times higher than that of the traditional AC-DC circuit. The DC-DC circuit works in current intermittent mode (DCM), which is helpful to reduce power consumption and improve light load efficiency. The simulated output voltage is 3.3V of 0.36% precision and 1.8V of 0.2wt% precision. The second piezoelectric energy collection and management circuit is based on Wuxi Shanghua CSMC.5 渭 m process design. It consists of a signal conditioning circuit, a control circuit, a P-SSHI circuit and a DC-DC circuit. In the P-SSHI circuit, the MOS tube is used instead of the diode (VD=0.7V@IF=1mA), and the complex control signal is not required. The simulation results show that the energy collected is more than 6 times higher than that of the traditional AC-DC circuit. In the DC-DC circuit, using synchronous rectifier with MOS transistor instead of diode is helpful to reduce power consumption. The simulation results show that the output voltage is 3.3V with the accuracy of 1.03% under the constant reference voltage. The energy efficiency is 84.3% and the accuracy is 1.05%, and the energy efficiency is 64.1%. For the chip design of piezoelectric energy collection and management circuit, an improved nanowatt-consumption reference voltage source is also proposed in this paper. The temperature coefficient is 51.32ppm/ 鈩，
本文编号：2303191
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