開關電源適配器作為一種常用的供電電源變換設備，在筆記本電腦
、手機、數shu碼ma相xiang機ji等deng電dian子zi產chan品pin中zhong均jun有you配pei置zhi。為wei了le有you效xiao保bao障zhang適shi配pei器qi的de安an全quan性xing能neng，通tong常chang情qing況kuang下xia電dian源yuan適shi配pei器qi都dou會hui采cai用yong一yi些xie輸shu出chu過guo載zai的de保bao護hu技ji術shu，在zai保bao護hu電dian源yuan內nei部bu係xi統tong的de同tong時shi
，確que保bao輸shu出chu穩wen定ding安an全quan。本ben文wen將jiang會hui介jie紹shao幾ji種zhong常chang用yong的de適shi配pei器qi輸shu出chu過guo載zai保bao護hu方fang法fa，幫bang助zhu工gong程cheng師shi更geng好hao的de完wan成cheng新xin產chan品pin研yan發fa工gong作zuo。

 

 

chaogonglvyanshiguanduanbaohushidianyuanshipeiqiyanfaguochengzhong
，bixujubeideyizhongshuchuguozaibaohujishu。zaiyanshitiaozhaxingxitongzhong

，duanshishunbiandianliudeyaoqiushibeirongxude，zhiyouzaidianliuyinglichangshijianchaoguoanquanzhishicaijiangdianyuanguanduan。duanshunbiandianliudetigongjiangbuhuiweihaidianyuandekekaoxing，yebuhuigeidianyuandechengbendailaihendadeyingxiang。zhiyouchangqichixudianliudeyaoqiucaihuiyingxiangdianludechengbenhetiji。dianyuanshuchudadeshunbiandianliushi，qixingnengjianghuiyouyidingdejiangdi，kenengchaoguoguidingdedianyawuchahewenbozhi。zhezhongyishoudaerduandeshunbiandianliuyingxiangdefuzaidedianxingshilishiruanpanqudongqiheluoxianguanqudongqi。

 

 

對(dui)逐(zhu)個(ge)脈(mai)衝(chong)進(jin)行(xing)超(chao)功(gong)率(lv)或(huo)過(guo)電(dian)流(liu)限(xian)製(zhi)在(zai)實(shi)際(ji)應(ying)用(yong)中(zhong)是(shi)非(fei)常(chang)有(you)效(xiao)的(de)輸(shu)出(chu)過(guo)載(zai)保(bao)護(hu)方(fang)法(fa)，在(zai)附(fu)加(jia)副(fu)邊(bian)限(xian)流(liu)保(bao)護(hu)中(zhong)經(jing)常(chang)采(cai)用(yong)此(ci)技(ji)術(shu)。在(zai)以(yi)前(qian)的(de)開(kai)關(guan)設(she)備(bei)中(zhong)，輸(shu)入(ru)電(dian)流(liu)是(shi)要(yao)實(shi)時(shi)監(jian)視(shi)的(de)。如(ru)果(guo)這(zhe)個(ge)電(dian)流(liu)超(chao)過(guo)了(le)規(gui)定(ding)的(de)限(xian)製(zhi)電(dian)流(liu)值(zhi)，導(dao)通(tong)脈(mai)衝(chong)就(jiu)會(hui)終(zhong)止(zhi)。在(zai)不(bu)續(xu)反(fan)激(ji)變(bian)換(huan)器(qi)中(zhong)，其(qi)最(zui)大(da)的(de)電(dian)流(liu)決(jue)定(ding)著(zhe)電(dian)路(lu)的(de)功(gong)率(lv)，這(zhe)種(zhong)類(lei)型(xing)的(de)保(bao)護(hu)電(dian)路(lu)就(jiu)變(bian)成(cheng)了(le)實(shi)實(shi)在(zai)在(zai)的(de)功(gong)率(lv)限(xian)製(zhi)保(bao)護(hu)電(dian)路(lu)。對(dui)於(yu)正(zheng)激(ji)變(bian)換(huan)器(qi)的(de)開(kai)關(guan)電(dian)路(lu)，它(ta)的(de)輸(shu)入(ru)功(gong)率(lv)是(shi)輸(shu)入(ru)功(gong)率(lv)是(shi)輸(shu)入(ru)電(dian)流(liu)與(yu)輸(shu)入(ru)電(dian)壓(ya)的(de)函(han)數(shu)。這(zhe)種(zhong)電(dian)路(lu)采(cai)用(yong)的(de)保(bao)護(hu)類(lei)型(xing)提(ti)供(gong)了(le)一(yi)個(ge)原(yuan)邊(bian)限(xian)流(liu)的(de)保(bao)護(hu)技(ji)術(shu)，在(zai)輸(shu)入(ru)電(dian)壓(ya)恒(heng)定(ding)的(de)情(qing)況(kuang)下(xia)，這(zhe)種(zhong)技(ji)術(shu)也(ye)提(ti)供(gong)了(le)一(yi)種(zhong)有(you)效(xiao)的(de)功(gong)率(lv)限(xian)製(zhi)保(bao)護(hu)的(de)檢(jian)測(ce)方(fang)法(fa)。逐(zhu)個(ge)快(kuai)速(su)脈(mai)衝(chong)限(xian)流(liu)的(de)主(zhu)要(yao)優(you)點(dian)是(shi)為(wei)在(zai)不(bu)正(zheng)常(chang)的(de)瞬(shun)變(bian)應(ying)力(li)如(ru)變(bian)壓(ya)器(qi)的(de)階(jie)梯(ti)飽(bao)和(he)效(xiao)應(ying)作(zuo)用(yong)下(xia)的(de)原(yuan)邊(bian)開(kai)關(guan)器(qi)件(jian)提(ti)供(gong)了(le)保(bao)護(hu)。電(dian)流(liu)型(xing)控(kong)製(zhi)規(gui)定(ding)了(le)此(ci)原(yuan)邊(bian)逐(zhu)個(ge)脈(mai)衝(chong)限(xian)流(liu)作(zuo)為(wei)控(kong)製(zhi)技(ji)術(shu)的(de)標(biao)準(zhun)功(gong)能(neng)
，這(zhe)也(ye)是(shi)它(ta)的(de)一(yi)個(ge)主(zhu)要(yao)優(you)點(dian)。

 

 

恒heng定ding輸shu入ru功gong率lv限xian製zhi保bao護hu法fa是shi目mu前qian國guo際ji上shang比bi較jiao通tong用yong的de開kai關guan電dian源yuan適shi配pei器qi輸shu出chu保bao護hu技ji術shu之zhi一yi，這zhe種zhong方fang法fa的de保bao護hu原yuan理li在zai於yu通tong過guo限xian製zhi最zui大da傳chuan輸shu功gong率lv來lai保bao護hu原yuan邊bian電dian路lu。但dan是shi在zai反fan激ji變bian換huan器qi中zhong，這zhe種zhong技ji術shu幾ji乎hu不bu能neng保bao護hu副fu邊bian輸shu出chu元yuan件jian。例li如ru在zai不bu連lian續xu反fan激ji變bian換huan器qi中zhong
，原yuan邊bian峰feng值zhi電dian流liu已yi經jing受shou到dao限xian製zhi，也ye就jiu是shi給gei出chu了le限xian製zhi的de傳chuan遞di功gong率lv。當dang負fu載zai電dian阻zu減jian少shao
、負(fu)載(zai)超(chao)過(guo)它(ta)的(de)限(xian)定(ding)值(zhi)時(shi)，輸(shu)出(chu)電(dian)壓(ya)開(kai)始(shi)下(xia)降(jiang)。正(zheng)是(shi)因(yin)為(wei)規(gui)定(ding)輸(shu)入(ru)和(he)相(xiang)應(ying)輸(shu)出(chu)的(de)電(dian)壓(ya)電(dian)流(liu)乘(cheng)積(ji)，當(dang)輸(shu)出(chu)電(dian)壓(ya)開(kai)始(shi)下(xia)降(jiang)時(shi)
，輸(shu)出(chu)電(dian)流(liu)將(jiang)會(hui)上(shang)升(sheng)。在(zai)短(duan)路(lu)時(shi)，副(fu)邊(bian)電(dian)流(liu)將(jiang)會(hui)變(bian)得(de)很(hen)大(da)，在(zai)開(kai)關(guan)電(dian)源(yuan)中(zhong)消(xiao)耗(hao)全(quan)部(bu)的(de)功(gong)率(lv)。這(zhe)種(zhong)形(xing)式(shi)的(de)功(gong)率(lv)限(xian)製(zhi)一(yi)般(ban)隻(zhi)作(zuo)為(wei)某(mou)些(xie)限(xian)製(zhi)補(bu)充(chong)形(xing)式(shi)，如(ru)副(fu)邊(bian)限(xian)流(liu)這(zhe)種(zhong)補(bu)充(chong)限(xian)製(zhi)的(de)電(dian)路(lu)中(zhong)。

 

 

fanjichaogonglvbaohufamuqianzaiguoneideshipeiqiyanfahechangjiashengchanguochengzhongyingyongbijiaoguangfan，zhezhongbaohujishushishangsuxingshideyizhongkuozhan，zaizhezhongxingshizhongyouyigedianlulaijianshiyuanbiandianliuhefubiandianya
，zaishuchudianyajiangdishijianshaogonglv。tongguozhezhongfangfa，dangfuzaidianzuxiajiangshishishuchudianliujianxiao
，fangzhifubianyuanqijianshoudaoguoqiangdeyinglisunhai
，qiquedianshiyongyufeixianxingfuzaishihuifashengsuodingxianxiang。

 

以上就是本文對兩種應用較多的開關電源適配器輸出過載保護技術的介紹，希望能夠幫助工程師們更好的完成設計工作。