PFM調制開關電容穩(wěn)壓電荷泵電路設計
發(fā)布時間：2019-05-23 16:56
【摘要】：電荷泵型升壓芯片具有高集成度、輔助電路簡單、低成本、高效率等優(yōu)點,在電子產品設計中具有重要的應用前景。論文在介紹升壓電荷泵的基本原理與發(fā)展、綜述國內外研究現(xiàn)狀的基礎上,針對傳統(tǒng)電荷泵的缺點,改進設計了三種性能較高的電荷泵升壓電路。論文首先提出了電路設計的功能要求及設計指標,據此完成電路的總體設計,圍繞功能性與設計指標,對各模塊電路進行細節(jié)設計。通過Cadence仿真工具對電荷泵及各自外圍電路進行性能仿真、分析,確保電荷泵升壓電路達到設計指標。電路采用SMIC 0.18μm工藝進行版圖設計與驗證,通過后仿進一步驗證了電路設計。仿真結果表明所設計電路功能正常,完全達到設計指標。電荷泵電路具有電壓增益高、效率高、功耗低、紋波電壓小、負載能力強等優(yōu)點,研究結果具有較強理論意義和實用價值。論文中主要工作有:(1)設計了一種采用柵極動態(tài)控制、襯底偏置技術的Dickson結構電荷泵電路;(2)設計了一種采用柵極動態(tài)控制、柵極動態(tài)偏置技術的交叉耦合電荷泵電路;(3)基于改進的柵極電位動態(tài)控制、柵極動態(tài)控制方法設計了一種交叉耦合結構的電荷泵電路;(4)圍繞所設計的電荷泵電路,設計了PFM調制開關電容電荷泵穩(wěn)壓電路系統(tǒng),系統(tǒng)包括電荷泵、壓控振蕩器(VCO)、非交疊時鐘產生電路、比較器、帶隙基準等電路模塊;電荷泵升壓電路的指標如下:工作電壓:0.9 2.4V;電壓增益:4(4級);電路功耗:1.5m W;紋波電壓:±10mV;轉換效率:65%;負載能力:100μA;時鐘頻率: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，
本文編號：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，
本文編號：2484060
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