【正文】 損耗較大的功率，所以需要采用大功率調(diào)整管并裝有體積很大的散熱器?，F(xiàn)在一般應(yīng)用的串聯(lián)調(diào)整穩(wěn)壓電源，是連續(xù)控制的線性穩(wěn)壓電源。各種開關(guān)電源的發(fā)展方向基本上都是采用更先進(jìn)的新器件、新技術(shù)、新材料、新工藝逐步減少開關(guān)電源的體積和重量，改善電氣性能指標(biāo)，提高工作可靠性，降低對電網(wǎng)的污染，消除對其他設(shè)備的干擾，增強(qiáng)智能化程度等等。80 年代初英國較早地研制了 48V 成套高頻開關(guān)式通信電源系統(tǒng)，從那時(shí)到現(xiàn)在的十幾年中，美國、德國、加拿大、澳大利亞、新西蘭、瑞典、日本、法國、西班牙、挪威等國家，都先后研制出了高頻開關(guān)式通信基礎(chǔ)電源系統(tǒng)，并得到了推廣應(yīng)用。開關(guān)穩(wěn)壓電源的設(shè)計(jì)與分析畢業(yè)論文 目 錄摘 要 ..................................................................................................................................................................IABSTRACT........................................................................................................................................................II第一章 緒論 .........................................................................................................................................................1 概述 .................................................................................................................................................................1 開關(guān)穩(wěn)壓電源的發(fā)展趨勢 ......................................................................................................................2 數(shù)字開關(guān)穩(wěn)壓電源的優(yōu)點(diǎn) .......................................................................................................................2 設(shè)計(jì)指標(biāo)要求 ...............................................................................................................................................3第二章 系統(tǒng)組成及原理 .............................................................................................................................4 交流開關(guān)式穩(wěn)壓電源電路組成結(jié)構(gòu) ...................................................................................................4 開關(guān)式穩(wěn)壓電源的基本工作原理 ........................................................................................................4 交流開關(guān)式穩(wěn)壓電源工作原理描述 ...................................................................................................5第三章 電路設(shè)計(jì)及分析 .............................................................................................................................7 脈沖寬度調(diào)制（PWM）電路 ....................................................................................................................7 高速電子開關(guān)電路 ..................................................................................................................................14 電壓和電流取樣電路 ..............................................................................................................................16 微處理器部分 ............................................................................................................................................17 隔離與驅(qū)動(dòng)電路的設(shè)計(jì) .........................................................................................................................20 整流和濾波電路 .......................................................................................................................................20 系統(tǒng)供電電路 ............................................................................................................................................21第四章 制作與調(diào)試 .......................................................................................................................................23 微處理器的調(diào)試 ........................................................23 AD 轉(zhuǎn)換器的調(diào)試 ........................................................23 DA 轉(zhuǎn)換器的調(diào)試 ........................................................23 LCD 顯示器的調(diào)試 .......................................................23 鍵盤的調(diào)試 ............................................................24 主整流和濾波電路的調(diào)試 ................................................24 三角波的調(diào)試 ..........................................................24 正弦波調(diào)試 ............................................................24 觀測 PWM 波形 ..........................................................24 觀測已經(jīng)解調(diào)后的正弦波波形 ...........................................25 連程序總調(diào) ...........................................................25第五章 性能指標(biāo)測試 ..............................................................................................