【正文】 直流開關(guān)穩(wěn)壓電源的設(shè)計(jì) 2021年 5 月 直流開關(guān)穩(wěn)壓電源的設(shè)計(jì) The Design of DC Switching Power Supply I 摘 要 開關(guān)電源具有效率高、體積小、重量輕等顯著特點(diǎn)。目前世界各國都有廣泛的應(yīng)用，特別是對(duì)大容量高頻開關(guān)電源的研究和開發(fā)已成為當(dāng)今電力電子學(xué)的主要研究領(lǐng)域，并派生了很多新的研究方向。穩(wěn)壓電源是實(shí)現(xiàn)電能變換和功率傳遞的主要設(shè)備。在信息時(shí)代，農(nóng)業(yè)、能 源、交通運(yùn)輸、通信等領(lǐng)域迅猛發(fā)展，對(duì)電源產(chǎn)業(yè)提出個(gè)更多、更高的要求，如節(jié)能 、節(jié)材、減重、環(huán)保、安全、可靠等。這就迫使電源工作者不斷的探索 尋求各種鄉(xiāng)關(guān)技術(shù)，做出最好的電源產(chǎn)品，以滿足各行各業(yè)的要求。 開關(guān)電源是一種新型的電源設(shè)備，較之于傳統(tǒng)的線性電源，其技術(shù)含量高、耗能低、使用方便，并取得了較好的經(jīng)濟(jì)效益。本文在介紹了開關(guān)電源的各種工作方式、其優(yōu)劣勢、設(shè)計(jì)方法及未來發(fā)展方向等的基礎(chǔ)上，對(duì)開關(guān)穩(wěn)壓電源進(jìn)行設(shè)計(jì)。設(shè)計(jì)分為幾個(gè)模塊進(jìn)行，包括輔助電源模塊、 PWM 控制模塊、升壓電路部分，其中PWM控制電路為電源設(shè)計(jì)的核心。 關(guān)鍵詞： 開關(guān)電源 穩(wěn)壓電源 PWM 控制 II Abstract Switching power has many remarkable characteristics such as high efficiency, smallness and lightness. Countries all over the world have extensive application in switching power, especially research on large capacity highfrequency switching has already bee the main research field of power electronics and many new research directions has derived from it. Power is to achieve power conversion and power transmission major the information age, agriculture, energy, transportation, munications and other areas Power of the source industry make a greater and higher requirements,such as energy, materials, weight reduction, environmental protection, safety and reliability. This has forced the power workers have been exploring the technology for a variety of rural customs, the power to make the best products to meet the requirements of all walks of life. Switching power supply is a new type of power supply, pared to traditional linear power supply, high technology, low energy consumption, easy to use, and has achieved good economic results. This paper describes the various switching power supply works, its advantages and disadvantages, design and direction of future development, based on the design of the switching power supply. Design is divided into several modules, namely, auxiliary power module, PWM control module, boost circuit part, which PWM control circuit for the power supply design of the core. Key words: switching power supply constant voltage power supply PWM control III 目 錄 摘要 ..................................................錯(cuò)誤 !未定義書簽。 Abstract ................................................錯(cuò)誤 !未定義書簽。 緒論 ...................................................錯(cuò)誤 !未定義書簽。 1 直流開關(guān)電源主電路的設(shè)計(jì) ............................................3 開關(guān)電源的基本原理與組成特點(diǎn)分析 ..................................3 開關(guān)穩(wěn)壓電源的基本工作原理 ......................................3 開關(guān)電源的結(jié)構(gòu)與組成特點(diǎn)分析 ......................................4 開關(guān)電源的基本結(jié)構(gòu) ..............................................4 DCDC 變換器類型 .................................................5 控 制電路 ........................................................6 主要電路的設(shè)計(jì) ....................................................8 整流電路設(shè)計(jì) .....................................................8 濾波電路設(shè)計(jì) .....................................................8 DCDC變換器設(shè)計(jì) ...................................................9 DCDC 變換器電路設(shè)計(jì)及工作原理 ...................................9 全橋 DCDC 變換器的控制方式 .....................................10 2 控制電路及保護(hù)電路的設(shè)計(jì) ............................錯(cuò)誤 !未定義書簽。 PWM 集成控制器的工作原理 ...........................錯(cuò)誤 !未定義書簽。 兩種控制模式的工作原理 ..........................錯(cuò)誤 !未定義書簽。 兩種控制模式的比較選擇 ...........................錯(cuò)誤 !未定義書簽。 保護(hù)電路的設(shè)計(jì) ....................................錯(cuò)誤 !未定義書簽。 過電壓保護(hù) ......................................錯(cuò)誤 !未定義書簽。 過電流保護(hù) .......................................錯(cuò)誤 !未定義書簽。 3 關(guān)