開關電源的(de)(de)(de)控制結構(gou)和(he)構(gou)成(cheng)(cheng)原(yuan)理一(yi)個開(kai)(kai)關(guan)(guan)(guan)電(dian)源(yuan)(yuan)的(de)(de)(de)產品(pin)做的(de)(de)(de)是(shi)(shi)否(fou)成(cheng)(cheng)功。質量方(fang)面(mian)(mian)是(shi)(shi)主要(yao)(yao)的(de)(de)(de)一(yi)個參考依據，除(chu)了相關(guan)(guan)(guan)參數(shu)是(shi)(shi)否(fou)符合標準外，其他的(de)(de)(de)一(yi)些方(fang)面(mian)(mian)也是(shi)(shi)需要(yao)(yao)注意(yi)的(de)(de)(de)。要(yao)(yao)做到對這些開(kai)(kai)關(guan)(guan)(guan)電(dian)源(yuan)(yuan)質量及(ji)相關(guan)(guan)(guan)參數(shu)的(de)(de)(de)把握的(de)(de)(de)很(hen)好的(de)(de)(de)話就需要(yao)(yao)在(zai)開(kai)(kai)關(guan)(guan)(guan)電(dian)源(yuan)(yuan)的(de)(de)(de)設(she)計方(fang)面(mian)(mian)多花(hua)些心思。這要(yao)(yao)求設(she)計者在(zai)開(kai)(kai)關(guan)(guan)(guan)電(dian)源(yuan)(yuan)的(de)(de)(de)組成(cheng)(cheng)各個部件的(de)(de)(de)選擇、電(dian)路的(de)(de)(de)設(she)計以及(ji)對開(kai)(kai)關(guan)(guan)(guan)電(dian)源(yuan)(yuan)的(de)(de)(de)控制原(yuan)理方(fang)面(mian)(mian)都要(yao)(yao)有較深(shen)的(de)(de)(de)理解和(he)很(hen)高(gao)的(de)(de)(de)技術能力。本(ben)文就開(kai)(kai)關(guan)(guan)(guan)電(dian)源(yuan)(yuan)的(de)(de)(de)控制原(yuan)理方(fang)面(mian)(mian)給大家做一(yi)些簡(jian)單的(de)(de)(de)介(jie)紹。

　　一、開關電源的控制結構正常的都沒什么比較大的區別

　　大體上開(kai)關(guan)(guan)電(dian)(dian)(dian)(dian)(dian)源由輸(shu)(shu)入(ru)電(dian)(dian)(dian)(dian)(dian)路、輸(shu)(shu)出電(dian)(dian)(dian)(dian)(dian)路、控(kong)制電(dian)(dian)(dian)(dian)(dian)路、變換器、四個主體組(zu)成。劃分的比較詳(xiang)細(xi)的話就可以分為：輸(shu)(shu)入(ru)濾(lv)波、輸(shu)(shu)入(ru)整(zheng)流(liu)、開(kai)關(guan)(guan)電(dian)(dian)(dian)(dian)(dian)路、采樣(yang)、基(ji)準電(dian)(dian)(dian)(dian)(dian)源、比較放大、震蕩(dang)器、V/F轉換、基(ji)極驅動、輸(shu)(shu)出整(zheng)流(liu)、輸(shu)(shu)出濾(lv)波電(dian)(dian)(dian)(dian)(dian)路等。實際的開(kai)關(guan)(guan)電(dian)(dian)(dian)(dian)(dian)源還(huan)要有保(bao)護(hu)電(dian)(dian)(dian)(dian)(dian)路、功率因(yin)素校正電(dian)(dian)(dian)(dian)(dian)路、同(tong)步整(zheng)流(liu)驅動電(dian)(dian)(dian)(dian)(dian)路及其它一(yi)些輔助電(dian)(dian)(dian)(dian)(dian)路等。根據控(kong)制類型不同(tong)，PM(脈沖調(diao)制)電(dian)(dian)(dian)(dian)(dian)路可能有多種形式。這里是典型的PFM結構。

　　二、開關電源的構成原理主要有四個方面

　　第(di)一個是(shi)變換電(dian)路(lu)：第(di)二個是(shi)輸(shu)出電(dian)路(lu)：第(di)三(san)個是(shi)控制電(dian)路(lu)：第(di)四個是(shi)輸(shu)入電(dian)路(lu)由于版面內容的限制開關(guan)電(dian)源構(gou)成原理方(fang)面只能為大家簡單的進行(xing)介(jie)紹。

　　具體方面由于內(nei)容過多，會在(zai)之后的(de)更新中分散介(jie)紹。像這些資(zi)料(liao)資(zi)料(liao)網(wang)上(shang)還是很多的(de)，主(zhu)要的(de)工作還是從(cong)網(wang)上(shang)搜(sou)集整理，然后咨詢(xun)公司的(de)技(ji)術(shu)人員再進行編輯(ji)給用(yong)戶(hu)們盡可(ke)能的(de)帶來幫助。