高頻軟開(kāi)關(guān)逆變式充電器.doc
高頻軟開(kāi)關(guān)逆變式充電器, 摘 要 隨著電力電子技術(shù)的發(fā)展,用電設(shè)備對(duì)電源的要求不斷提高, 開(kāi)關(guān)電源正逐步向著高效率、大功率密度、高可靠性、低電磁抗干擾、無(wú)噪聲、維修方便等方向發(fā)展。瞬時(shí)同步整流技術(shù)由于實(shí)現(xiàn)簡(jiǎn)單,響應(yīng)速度快和具有自...
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摘 要
隨著電力電子技術(shù)的發(fā)展,用電設(shè)備對(duì)電源的要求不斷提高, 開(kāi)關(guān)電源正逐步向著高效率、大功率密度、高可靠性、低電磁抗干擾、無(wú)噪聲、維修方便等方向發(fā)展。瞬時(shí)同步整流技術(shù)由于實(shí)現(xiàn)簡(jiǎn)單,響應(yīng)速度快和具有自然限流等優(yōu)點(diǎn)而得到廣泛地應(yīng)用。
本文在分析DC-DC技術(shù)發(fā)展的基礎(chǔ)之上,用Buck電路,運(yùn)用MAX767系列芯片研究一條簡(jiǎn)潔的途徑實(shí)現(xiàn)DC-DC直流變換,即應(yīng)用同步整流技術(shù)控制方法,來(lái)實(shí)現(xiàn)變換器高效工作。該變換器主電路結(jié)構(gòu)簡(jiǎn)單可靠,可以實(shí)現(xiàn)輸入: DC 4.5~5.5V,輸出DC 5V/3.3A的設(shè)計(jì)。
分析其系統(tǒng)工作原理的過(guò)程,為該變換方法和應(yīng)用提供了理論基礎(chǔ),通過(guò)同步整流技術(shù)的方法和應(yīng)用MOSFET管的設(shè)計(jì),較理想的實(shí)現(xiàn)了DC-DC變換器的設(shè)計(jì)要求。
最后,運(yùn)用這些設(shè)計(jì)成功的設(shè)計(jì)出DC-DC直流變換器。
本文主要介紹Buck電路和MAX767系列DC設(shè)計(jì),工作原理和主要參數(shù)的設(shè)計(jì),并對(duì)系統(tǒng)的外特性和穩(wěn)定性作了分析。
關(guān)鍵詞:DC-DC直流變換; 同步整流技術(shù); MOSFET管
Abstract
With the development of the electronic technology, the higher requirement of Power Supply are raised including high efficiency, high power density, low EMI, and rapid dynamic response. A hysterics-band instantaneous current control PWM Technique is popularly used because of its simplicity of implementation, fast current control response, and inherent peak current limiting capability.
The design of the foundation of upper,with buck circuit,handle max767 series chip look into a slip of compact avenue realize dc-dc direct current transform,namely application synchronous rectification technical control means,came realize convector highly active wrought of the text at analyses dc-dc technological development. be one's turn convector trunk feeder structure simplicity credibility,could realize import:DC 4.5~5.5v,output dc 5V / 3.3A
Both that of analyses his system principle of operation course,for be one's turn transform method and application supply know clearly rationale,through the medium of synchronous rectification technical means and application MOSFET table design,compare ideal realize know clearly dc-dc convector' design requirement.
At the last,handle these be designed for wrought 'thought out dc-dc dc converter to.
The design,combine versus systemic external characteristic and stability did know clearly analyses of the both text mostly introduce buck circuit and max767 series DC design,principle of operation and major parameter.
keyword:dc-dc direct current transform synchronous rectification technology mosfet tube。
目錄
摘 要 I
Abstract II
第一章 緒 論 1
1.1 PWM技術(shù)歷史和現(xiàn)狀 1
1.2高頻軟開(kāi)關(guān)逆變式充電機(jī) 2
第二章 主電路的設(shè)計(jì) 3
2.1整流濾波電路 3
2.2主電路的選型 4
2.3軟開(kāi)關(guān)技術(shù)的基本概念 6
2.4軟開(kāi)關(guān)技術(shù)的提出與發(fā)展 7
2.5工作過(guò)程分析 9
2.6全橋型電路的主電路元?dú)饧?shù)的確定 12
2.7輸出濾波電路的設(shè)計(jì) 16
第三章 濾波電路和主電路的計(jì)算 18
3.1 濾波電感 18
3.2 濾波電容 19
3.3 開(kāi)關(guān)器件的設(shè)計(jì) 20
3.4主電路設(shè)計(jì)的具體計(jì)算 22
3.5 驅(qū)動(dòng)電路的設(shè)計(jì) 27
第四章 控制電路的設(shè)計(jì)及保護(hù)電路的實(shí)現(xiàn) 31
4.1 控制方案的確定 31
4.2 PWM信號(hào)的產(chǎn)生 33
4.3 移相及互鎖電路 36
4.4 開(kāi)關(guān)信號(hào)的產(chǎn)生 38
4.5 恒流控制電路的設(shè)計(jì) 39
4.6 調(diào)節(jié)器電路的設(shè)計(jì) 41
4.7 保護(hù)電路設(shè)計(jì) 42
參考文獻(xiàn) 44
致 謝 45
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