方法一：逐個脈衝的超功率或過電流限製

在開關電源適配器的新產品研發過程中，逐個脈衝的超功率、過(guo)電(dian)流(liu)限(xian)製(zhi)是(shi)必(bi)不(bu)可(ke)少(shao)的(de)
，而(er)這(zhe)種(zhong)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)。

方法二：超功率延時關斷保護

超chao功gong率lv延yan時shi關guan斷duan保bao護hu作zuo為wei一yi種zhong非fei常chang有you效xiao的de輸shu出chu過guo載zai保bao護hu技ji術shu，目mu前qian已yi經jing在zai國guo內nei所suo生sheng產chan的de電dian源yuan適shi配pei器qi產chan品pin中zhong得de到dao了le廣guang泛fan的de普pu及ji。在zai延yan時shi跳tiao閘zha型xing係xi統tong中zhong，短duan時shi瞬shun變bian電dian流liu的de要yao求qiu是shi被bei容rong許xu的de，隻zhi有you在zai電dian流liu應ying力li長chang時shi間jian超chao過guo安an全quan值zhi時shi才cai將jiang電dian源yuan關guan斷duan。短duan瞬shun變bian電dian流liu的de提ti供gong將jiang不bu會hui危wei害hai電dian源yuan的de可ke靠kao性xing，也ye不bu會hui給gei電dian源yuan的de成cheng本ben帶dai來lai很hen大da的de影ying響xiang。隻zhi有you長chang期qi持chi續xu電dian流liu的de要yao求qiu才cai會hui影ying響xiang電dian路lu的de成cheng本ben和he體ti積ji。

方法三：反激超功率限製保護法

除(chu)了(le)上(shang)麵(mian)所(suo)介(jie)紹(shao)的(de)兩(liang)種(zhong)方(fang)法(fa)之(zhi)外(wai)，反(fan)激(ji)超(chao)功(gong)率(lv)限(xian)製(zhi)保(bao)護(hu)法(fa)也(ye)同(tong)樣(yang)是(shi)能(neng)夠(gou)有(you)效(xiao)保(bao)障(zhang)開(kai)關(guan)電(dian)源(yuan)適(shi)配(pei)器(qi)安(an)全(quan)工(gong)作(zuo)的(de)重(zhong)要(yao)措(cuo)施(shi)，目(mu)前(qian)在(zai)國(guo)內(nei)的(de)適(shi)配(pei)器(qi)研(yan)發(fa)和(he)廠(chang)家(jia)生(sheng)產(chan)過(guo)程(cheng)中(zhong)應(ying)用(yong)比(bi)較(jiao)廣(guang)泛(fan)。這(zhe)種(zhong)保(bao)護(hu)技(ji)術(shu)是(shi)上(shang)速(su)形(xing)式(shi)的(de)一(yi)種(zhong)擴(kuo)展(zhan)，在(zai)采(cai)用(yong)該(gai)種(zhong)保(bao)護(hu)法(fa)的(de)適(shi)配(pei)器(qi)電(dian)路(lu)中(zhong)
，有(you)一(yi)個(ge)專(zhuan)門(men)的(de)電(dian)路(lu)來(lai)監(jian)視(shi)原(yuan)邊(bian)電(dian)流(liu)和(he)副(fu)邊(bian)電(dian)壓(ya)
，在(zai)輸(shu)出(chu)電(dian)壓(ya)降(jiang)低(di)時(shi)減(jian)少(shao)功(gong)率(lv)。通(tong)過(guo)這(zhe)種(zhong)方(fang)法(fa)，當(dang)負(fu)載(zai)電(dian)阻(zu)下(xia)降(jiang)時(shi)使(shi)輸(shu)出(chu)電(dian)流(liu)減(jian)小(xiao)
，防(fang)止(zhi)副(fu)邊(bian)元(yuan)器(qi)件(jian)受(shou)到(dao)過(guo)強(qiang)的(de)應(ying)力(li)損(sun)害(hai)，其(qi)缺(que)點(dian)是(shi)用(yong)於(yu)非(fei)線(xian)性(xing)負(fu)載(zai)時(shi)會(hui)發(fa)生(sheng)鎖(suo)定(ding)現(xian)象(xiang)。

方法四：恒功率限製保護法

hengdingshurugonglvxianzhibaohufashiwomenjintianyaoweidajiajieshaodedisizhongkaiguandianyuanshipeiqibaohujishu，yeshimuqianguoneiwaibijiaotongyongdeyizhongshuchubaohujishu，zaibijibenshipeiqiyijishoujishipeiqideyanfaguochengzhong，doushaobuletadeshenying。zhezhongfangfadebaohuyuanlizaiyutongguoxianzhizuidachuanshugonglvlaibaohuyuanbiandianlu。danshizaifanjibianhuanqizhong，zhezhongjishujihubunengbaohufubianshuchuyuanjian。liruzaibulianxufanjibianhuanqizhong，yuanbianfengzhidianliuyijingshoudaoxianzhi，yejiushigeichulexianzhidechuandigonglv。

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