在開關電源適配器從新產品的研究
、開kai發fa和he設she計ji，工gong程cheng師shi通tong常chang為wei設she計ji新xin產chan品pin添tian加jia一yi些xie保bao護hu措cuo施shi，以yi避bi免mian開kai關guan電dian源yuan適shi配pei器qi在zai使shi用yong過guo程cheng中zhong出chu現xian的de短duan路lu或huo部bu件jian損sun壞huai，使shi工gong作zuo壽shou命ming的de關guan係xi。在zai今jin天tian的de文wen章zhang中zhong，我wo們men將jiang共gong享xiang四si個ge保bao護hu措cuo施shi，將jiang允yun許xu適shi配pei器qi擴kuo展zhan適shi配pei器qi的de使shi用yong壽shou命ming，讓rang我wo們men看kan看kan。

方法一：脈衝功率或過電流限製

在zai新xin產chan品pin研yan發fa的de開kai關guan電dian源yuan適shi配pei器qi，一yi個ge一yi個ge由you一yi個ge脈mai衝chong的de超chao功gong率lv
，電dian流liu限xian製zhi是shi必bi不bu可ke少shao的de，這zhe一yi個ge由you一yi個ge脈mai衝chong超chao功gong率lv或huo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和he額e外wai的de二er次ci側ce限xian流liu保bao護hu，在zai這zhe項xiang技ji術shu中zhong經jing常chang使shi用yong。在zai以yi前qian的de開kai關guan中zhong，輸shu入ru電dian流liu實shi時shi監jian測ce。如ru果guo電dian流liu超chao過guo指zhi定ding的de極ji限xian電dian流liu


，脈mai衝chong將jiang被bei終zhong止zhi。在zai反fan激ji變bian換huan器qi中zhong，最zui大da電dian流liu決jue定ding了le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成cheng為wei一yi個ge真zhen正zheng的de電dian源yuan限xian製zhi保bao護hu電dian路lu。

方法二：超斷電延時關機保護

超chao功gong率lv延yan時shi關guan機ji保bao護hu技ji術shu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
，在zai國guo內nei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應ying用yong。在zai延yan時shi跳tiao閘zha型xing係xi統tong中zhong，允yun許xu短duan時shi瞬shun態tai電dian流liu的de要yao求qiu，隻zhi有you當dang電dian流liu應ying力li超chao過guo了le很hen長chang一yi段duan時shi間jian的de安an全quan值zhi時shi，電dian源yuan關guan閉bi。短duan暫zan的de暫zan態tai電dian流liu不bu會hui危wei及ji電dian源yuan的de可ke靠kao性xing
，也ye不bu會hui對dui電dian源yuan的de成cheng本ben產chan生sheng很hen大da的de影ying響xiang。隻zhi有you長chang期qi的de電dian流liu要yao求qiu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IP保護

除chu了le上shang述shu兩liang種zhong方fang法fa
，反fan激ji式shi超chao保bao護hu通tong過guo限xian製zhi功gong率lv的de方fang法fa也ye可ke以yi有you效xiao地di保bao護hu開kai關guan電dian源yuan適shi配pei器qi的de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製zhi造zao業ye被bei廣guang泛fan應ying用yong。該gai技ji術shu是shi一yi個ge擴kuo展zhan的de速su度du上shang的de形xing式shi，在zai使shi用yong這zhe種zhong保bao護hu方fang法fa的de適shi配pei器qi電dian路lu，一yi個ge專zhuan用yong的de電dian路lu
，以yi監jian視shi當dang前qian在zai一yi次ci側ce和he二er次ci側ce電dian壓ya。當dang輸shu出chu電dian壓ya降jiang低di時shi降jiang低di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降jiang低di時shi減jian小xiao了le輸shu出chu電dian流liu，從cong而er防fang止zhi了le二er次ci元yuan件jian受shou到dao太tai大da的de應ying力li損sun傷shang。

方法四：恒功率限製保護

yigehengdingdeshurugonglvxianzhibaohufashijintianwomenyaojieshaodesigekaiguandianyuanshipeiqibaohujishu，shimuqianguoneiwaitongyongdeyigeshuchubaohujishuhezaikaifaguochengzhongdeshipeiqidebijibendiannaoheshoujishipeiqi，bingzuizhong，tadeyingzi。gaifangfadebaohuyuanlishitongguoxianzhizuidafashegonglvbaohuchujicedianlu。danzaifanjibianhuanqizhong
，zhezhongjishuhennanbaohuceshuchu。liru，zaiyigebulianxudefanjibianhuanqizhong，yuanshidebianyuanfengzhidianliushiyouxiande，zheshichuanshugonglvdejixian。

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