PFM调制开关电容稳压电荷泵电路设计
发布时间：2019-05-23 16:56
【摘要】：电荷泵型升压芯片具有高集成度、辅助电路简单、低成本、高效率等优点,在电子产品设计中具有重要的应用前景。论文在介绍升压电荷泵的基本原理与发展、综述国内外研究现状的基础上,针对传统电荷泵的缺点,改进设计了三种性能较高的电荷泵升压电路。论文首先提出了电路设计的功能要求及设计指标,据此完成电路的总体设计,围绕功能性与设计指标,对各模块电路进行细节设计。通过Cadence仿真工具对电荷泵及各自外围电路进行性能仿真、分析,确保电荷泵升压电路达到设计指标。电路采用SMIC 0.18μm工艺进行版图设计与验证,通过后仿进一步验证了电路设计。仿真结果表明所设计电路功能正常,完全达到设计指标。电荷泵电路具有电压增益高、效率高、功耗低、纹波电压小、负载能力强等优点,研究结果具有较强理论意义和实用价值。论文中主要工作有:(1)设计了一种采用栅极动态控制、衬底偏置技术的Dickson结构电荷泵电路;(2)设计了一种采用栅极动态控制、栅极动态偏置技术的交叉耦合电荷泵电路;(3)基于改进的栅极电位动态控制、栅极动态控制方法设计了一种交叉耦合结构的电荷泵电路;(4)围绕所设计的电荷泵电路,设计了PFM调制开关电容电荷泵稳压电路系统,系统包括电荷泵、压控振荡器(VCO)、非交叠时钟产生电路、比较器、带隙基准等电路模块;电荷泵升压电路的指标如下:工作电压:0.9 2.4V;电压增益:4(4级);电路功耗:1.5m W;纹波电压:±10mV;转换效率:65%;负载能力:100μA;时钟频率:20MHz;
[Abstract]:Charge pump boost chip has the advantages of high integration, simple auxiliary circuit, low cost and high efficiency, and has an important application prospect in electronic product design. In this paper, the basic principle and development of boost charge pump are introduced, and the research status at home and abroad is reviewed. aiming at the shortcomings of traditional charge pump, three kinds of charge pump boost circuits with high performance are improved and designed in this paper. Firstly, the functional requirements and design indexes of the circuit design are put forward, according to which the overall design of the circuit is completed, and the detailed design of each module circuit is carried out around the function and design index. The performance of charge pump and its peripheral circuits are simulated and analyzed by Cadence simulation tool to ensure that the voltage boost circuit of charge pump meets the design index. The circuit is designed and verified by SMIC 0.18 渭 m process, and the circuit design is further verified by imitation. The simulation results show that the designed circuit has normal function and fully meets the design index. Charge pump circuit has the advantages of high voltage gain, high efficiency, low power consumption, low ripple voltage, strong load capacity and so on. The research results have strong theoretical significance and practical value. The main work of this paper is as follows: (1) A Dickson charge pump circuit with gate dynamic control and substrate bias technology is designed. (2) A cross-coupled charge pump circuit based on gate dynamic control and gate dynamic bias technology is designed. (3) based on the improved dynamic control of gate potential, a charge pump circuit with cross-coupling structure is designed. (4) based on the designed charge pump circuit, the voltage stabilizing circuit system of PFM modulation switched capacitor charge pump is designed, which includes charge pump, voltage controlled oscillator (VCO), non-overlapping clock generation circuit, comparator, band gap reference and other circuit modules. The indexes of charge pump boost circuit are as follows: operating voltage: 0.9 鈮，
本文编号：2484060
[Abstract]:Charge pump boost chip has the advantages of high integration, simple auxiliary circuit, low cost and high efficiency, and has an important application prospect in electronic product design. In this paper, the basic principle and development of boost charge pump are introduced, and the research status at home and abroad is reviewed. aiming at the shortcomings of traditional charge pump, three kinds of charge pump boost circuits with high performance are improved and designed in this paper. Firstly, the functional requirements and design indexes of the circuit design are put forward, according to which the overall design of the circuit is completed, and the detailed design of each module circuit is carried out around the function and design index. The performance of charge pump and its peripheral circuits are simulated and analyzed by Cadence simulation tool to ensure that the voltage boost circuit of charge pump meets the design index. The circuit is designed and verified by SMIC 0.18 渭 m process, and the circuit design is further verified by imitation. The simulation results show that the designed circuit has normal function and fully meets the design index. Charge pump circuit has the advantages of high voltage gain, high efficiency, low power consumption, low ripple voltage, strong load capacity and so on. The research results have strong theoretical significance and practical value. The main work of this paper is as follows: (1) A Dickson charge pump circuit with gate dynamic control and substrate bias technology is designed. (2) A cross-coupled charge pump circuit based on gate dynamic control and gate dynamic bias technology is designed. (3) based on the improved dynamic control of gate potential, a charge pump circuit with cross-coupling structure is designed. (4) based on the designed charge pump circuit, the voltage stabilizing circuit system of PFM modulation switched capacitor charge pump is designed, which includes charge pump, voltage controlled oscillator (VCO), non-overlapping clock generation circuit, comparator, band gap reference and other circuit modules. The indexes of charge pump boost circuit are as follows: operating voltage: 0.9 鈮，
本文编号：2484060
本文链接：https://www.wllwen.com/kejilunwen/dianzigongchenglunwen/2484060.html
