【摘要】：在已有的太陽(yáng)能、振動(dòng)、溫差等環(huán)境能量收集技術(shù)中,振動(dòng)能收集是當(dāng)下的一個(gè)熱點(diǎn)。本文著眼于壓電方式的振動(dòng)能收集與管理,并提出兩個(gè)壓電能收集與管理電路。 第一個(gè)壓電能收集與管理電路是基于分立器件設(shè)計(jì)。它包含一個(gè)P-SSHI電路、個(gè)控制電路和一個(gè)DC-DC電路。該P(yáng)-SSHI電路只需要兩個(gè)開(kāi)關(guān),采用低功耗二極管BAT54S (VD=0.32V@IF=1nA)作為整流器,仿真的結(jié)果顯示其收集的能量相比傳統(tǒng)的AC-DC電路提高5倍以上；其中的DC-DC電路工作在電流斷續(xù)模式下(DCM),這有利于降低功耗,提高輕載效率。其仿真輸出電壓分別為0.36%精度的3.3V和0.2%精度的1.8V。 第二個(gè)壓電能收集與管理電路是基于無(wú)錫上華CSMC.5μm工藝設(shè)計(jì)。它包含一個(gè)1個(gè)信號(hào)調(diào)理電路、一個(gè)控制電路、一個(gè)P-SSHI電路和一個(gè)DC-DC電路。P-SSHI電路中采用MOS管代替二極管(VD=0.7V@IF=1mA),也不需要復(fù)雜的控制信號(hào)。仿真的結(jié)果顯示,其收集的能量相比傳統(tǒng)的AC-DC電路提高6倍以上；其中的DC-DC電路中采用MOS管同步整流代替二極管有利于降低功耗,仿真結(jié)果顯示在恒定的基準(zhǔn)電壓下,輸出電壓分別精度為1.03%的3.3V,能量效率達(dá)到84.3%和精度為1.05%的1.8V,能量效率達(dá)到64.1%。 對(duì)壓電能收集與管理電路的芯片設(shè)計(jì),本文還提出了一個(gè)改進(jìn)的納功耗基準(zhǔn)電壓源。其溫度系數(shù)為51.32ppm/℃,電壓系數(shù)為0.32%/V,PSRR為-52dB(@100Hz),所需要消耗功率為790nW,相對(duì)工藝變化為士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，

本文編號(hào)：2303191