本文選題：LLC諧振變換器 + SABER仿真�。� 參考：《華南理工大學(xué)》2014年碩士論文

【摘要】：上世紀(jì)70年代，美國(guó)學(xué)者提出了諧振變換器的概念，受當(dāng)時(shí)電力電子技術(shù)發(fā)展水平的制約，諧振變換器在較長(zhǎng)時(shí)間里都沒(méi)有應(yīng)用到實(shí)際產(chǎn)品中。直到本世紀(jì)初，隨著電力電子技術(shù)的快速發(fā)展及超大規(guī)模集成電路的涌現(xiàn)，諧振變換器開(kāi)始被人們所關(guān)注。由于電源在功率密度、體積、效率及電磁干擾（EMI）等方面的要求不斷提高，諧振電源的優(yōu)勢(shì)不斷凸顯，這促進(jìn)了諧振電源的快速發(fā)展。 本文采用ADI公司的電源控制芯片ADP1046A設(shè)計(jì)了一款LLC諧振數(shù)字電源，該電源具有效率高、動(dòng)態(tài)性能好等特點(diǎn)。LLC諧振電源按其結(jié)構(gòu)可分為主電路和控制電路兩部分，本文從這兩部分來(lái)設(shè)計(jì)高效LLC諧振數(shù)字電源。 在主電路設(shè)計(jì)方面，本文首先基于LLC諧振變換器的穩(wěn)態(tài)電路模型，提出了一種計(jì)算諧振器件參數(shù)的方法；然后對(duì)主電路的功率器及主變壓器進(jìn)行選型及設(shè)計(jì)，原邊開(kāi)關(guān)管型號(hào)為IPA65R190CFD，整流管型號(hào)為BSC016N04LSG；最后采用SABER軟件構(gòu)建了LLC諧振電源的仿真模型，通過(guò)該仿真模型來(lái)驗(yàn)證主電路參數(shù)能否使?jié)M足原邊開(kāi)關(guān)管ZVS和副邊整流管ZCS的要求，同時(shí)通過(guò)仿真結(jié)果分析所選器件是否滿(mǎn)足應(yīng)力要求及為控制電路設(shè)計(jì)提供參考。 在控制電路設(shè)計(jì)方面，首先采用ADP1046A作為諧振電源的主控芯片，以此作為整個(gè)控制系統(tǒng)的核心，，設(shè)計(jì)出該芯片的外圍電路及原副邊電壓電流檢測(cè)電路；然后再進(jìn)行驅(qū)動(dòng)電路及輔助源電路設(shè)計(jì)，原邊驅(qū)動(dòng)器采用高壓隔離驅(qū)動(dòng)器ADuM4223，副邊驅(qū)動(dòng)器采用大電流、高速ADP3654，輔助源電路采用簡(jiǎn)單可靠的反激拓?fù)浣Y(jié)構(gòu)，輔助源電路控制芯片選擇具有功率折返特性的NCP1234；最后通過(guò)ADP1046A的軟件GUI來(lái)設(shè)置電源工作頻率、死區(qū)時(shí)間、過(guò)壓過(guò)流門(mén)限、濾波環(huán)路等控制參數(shù)。 最后對(duì)電源的各項(xiàng)指標(biāo)進(jìn)行測(cè)試，通過(guò)對(duì)比分析測(cè)試結(jié)果可知，本文設(shè)計(jì)的LLC諧振電源在效率、動(dòng)態(tài)響應(yīng)等方面具有較強(qiáng)的優(yōu)勢(shì)，具有較好的實(shí)際應(yīng)用價(jià)值。
[Abstract]:In the 1970s, American scholars put forward the concept of resonant converter. Limited by the development level of power electronics technology at that time, resonant converter has not been applied to practical products for a long time. Until the beginning of this century, with the rapid development of power electronics technology and the emergence of VLSI, resonant converters began to be concerned. Due to the increasing power density, volume, efficiency and electromagnetic interference (EMI) requirements, the advantages of the resonant power supply are constantly highlighted, which promotes the rapid development of the resonant power supply. In this paper, a LLC resonant digital power supply is designed with the power supply control chip ADP1046A of ADI Company. The power supply has the characteristics of high efficiency and good dynamic performance. According to its structure, the resonant power supply can be divided into two parts: the main circuit and the control circuit. This paper designs an efficient LLC resonant digital power supply from these two parts. In the design of main circuit, based on the steady-state circuit model of LLC resonant converter, a method to calculate the parameters of resonator is proposed, and then the power device and transformer of the main circuit are selected and designed. The primary switch tube is IPA65R190CFDD and the rectifier is BSC016N04LSG.The simulation model of LLC resonant power supply is constructed by using SABER software, and the main circuit parameters can satisfy the requirements of ZVS and ZCS. At the same time, the simulation results are used to analyze whether the selected device meets the stress requirement and provide reference for the design of control circuit. In the aspect of control circuit design, ADP1046A is first used as the main control chip of resonant power supply, which is the core of the whole control system. The peripheral circuit of the chip and the detecting circuit of primary and secondary side voltage and current are designed. Then the drive circuit and auxiliary source circuit are designed. The primary side driver uses high voltage isolation driver ADuM4223, the secondary side driver adopts high current and high speed ADP3654, and the auxiliary source circuit adopts a simple and reliable flyback topology. The auxiliary source circuit control chip selects NCP1234 with power reentrant characteristics. Finally, the control parameters such as power supply frequency, dead-time, overvoltage overcurrent threshold, filter loop and so on are set by ADP1046A software GUI. Finally, through the comparison and analysis of the test results, the LLC resonant power supply designed in this paper has strong advantages in efficiency, dynamic response and so on, and has good practical application value.
【學(xué)位授予單位】：華南理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TM46

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