2024十(shi)大LED驅(qu)動(dong)(dong)電源品(pin)(pin)牌(pai)排(pai)(pai)(pai)(pai)行(xing)榜(bang)(bang)是CN10排(pai)(pai)(pai)(pai)排(pai)(pai)(pai)(pai)榜(bang)(bang)技術研究(jiu)部(bu)(bu)門和CNPP品(pin)(pin)牌(pai)數(shu)據(ju)(ju)研究(jiu)部(bu)(bu)門重磅推出(chu)的LED驅(qu)動(dong)(dong)電源十(shi)大名牌(pai),榜(bang)(bang)單由CN10/CNPP品(pin)(pin)牌(pai)數(shu)據(ju)(ju)研究(jiu)部(bu)(bu)門通過(guo)資料收集整理并(bing)基于大數(shu)據(ju)(ju)統計、云計算、人工智能、投票點贊以及(ji)根據(ju)(ju)市場和參(can)(can)數(shu)條件變化(hua)專(zhuan)業(ye)(ye)測評而得出(chu)。旨在(zai)引起社會的廣(guang)泛關注,引領(ling)行(xing)業(ye)(ye)發展方向,并(bing)推動(dong)(dong)更多LED驅(qu)動(dong)(dong)電源品(pin)(pin)牌(pai)快(kuai)速發展,為眾多LED驅(qu)動(dong)(dong)電源實力企業(ye)(ye)提供(gong)充分(fen)展示自身(shen)實力的平臺,排(pai)(pai)(pai)(pai)序不分(fen)先后,僅提供(gong)參(can)(can)考使用。
1、按驅動方式分(fen)為恒流式和恒壓(ya)式
(1)恒流(liu)式:恒流(liu)式電(dian)(dian)路(lu)特點(dian)是(shi)輸(shu)出(chu)(chu)電(dian)(dian)流(liu)恒定,輸(shu)出(chu)(chu)電(dian)(dian)壓(ya)隨著負(fu)載(zai)電(dian)(dian)阻(zu)大小變化而變化,恒流(liu)式電(dian)(dian)源(yuan)驅動LED是(shi)較為理(li)想(xiang)的方(fang)案并(bing)且不(bu)怕負(fu)載(zai)短路(lu),LED亮度一致性較好。缺點(dian):成本昂貴、禁止負(fu)載(zai)完全開(kai)路(lu)、LED數量(liang)不(bu)宜(yi)過多,因(yin)為電(dian)(dian)源(yuan)都有(you)最大承受電(dian)(dian)流(liu)以及(ji)電(dian)(dian)壓(ya)。
(2)恒(heng)壓式:恒(heng)壓式驅(qu)動電(dian)路特點是輸出電(dian)壓恒(heng)定,輸出電(dian)流(liu)隨著負載電(dian)阻(zu)大小變(bian)化而變(bian)化,電(dian)壓不會很高。缺點:禁止負載完全短(duan)路、電(dian)壓波動會影響(xiang)LED亮度。
2、按電(dian)路結構分為電(dian)容降(jiang)壓(ya)(ya)、變壓(ya)(ya)器降(jiang)壓(ya)(ya)、電(dian)阻降(jiang)壓(ya)(ya)、RCC降(jiang)壓(ya)(ya)、PWM控制式
(1)電(dian)(dian)(dian)容(rong)降(jiang)壓:采(cai)用電(dian)(dian)(dian)容(rong)降(jiang)壓方式的LED電(dian)(dian)(dian)源容(rong)易(yi)(yi)容(rong)易(yi)(yi)受電(dian)(dian)(dian)網(wang)電(dian)(dian)(dian)壓波動的影響,沖擊電(dian)(dian)(dian)流過大,電(dian)(dian)(dian)源效率低(di),但是結構簡單。
(2)變壓(ya)器降壓(ya):這種方式轉換效率低下,可(ke)靠(kao)性(xing)不高,變壓(ya)器笨重。
(3)電(dian)(dian)阻降(jiang)(jiang)壓:這種方式(shi)與電(dian)(dian)容降(jiang)(jiang)壓方式(shi)差不多,只(zhi)不過(guo)電(dian)(dian)阻需要(yao)消耗更大(da)的(de)電(dian)(dian)能,因此電(dian)(dian)源(yuan)效(xiao)率也是比較低(di)下。
(4)RCC降(jiang)壓(ya)式(shi):這種方式(shi)應用的(de)就多(duo)一點,不僅因為它(ta)的(de)穩壓(ya)范圍寬,同時它(ta)的(de)電源利用效率也能達到70%多(duo),但(dan)是(shi)它(ta)的(de)負(fu)載電壓(ya)紋(wen)波較大。
(5)PWM控制式:采(cai)用PWM這(zhe)種(zhong)方式就不(bu)得不(bu)提(ti)一(yi)下了,因為就現在而言(yan)PWM控制方式設(she)計的(de)(de)LED電(dian)源(yuan)是(shi)比(bi)較理想的(de)(de),這(zhe)種(zhong)LED驅動電(dian)源(yuan)輸(shu)出(chu)電(dian)壓或電(dian)流都很穩定(ding),電(dian)源(yuan)轉換效率也能(neng)達到80%,甚至90%以(yi)(yi)上,值得注意的(de)(de)是(shi),這(zhe)種(zhong)電(dian)源(yuan)還可以(yi)(yi)附加多(duo)重保護電(dian)路。
3、按輸(shu)入(ru)輸(shu)出是否隔(ge)(ge)離(li)(li)可分(fen)為隔(ge)(ge)離(li)(li)式(shi)和非(fei)隔(ge)(ge)離(li)(li)式(shi)
(1)隔(ge)離(li)(li)式(shi):隔(ge)離(li)(li)是為了(le)安全起(qi)見,通(tong)過變壓器將輸入輸出進行隔(ge)離(li)(li)。常見拓撲類型(xing)有正(zheng)激(ji)(ji)式(shi)、反激(ji)(ji)式(shi)、半橋式(shi)、全橋式(shi)和推挽式(shi)等(deng)。正(zheng)激(ji)(ji)式(shi)和反激(ji)(ji)式(shi)拓撲多(duo)用于(yu)小功率場(chang)合,器件少而(er)簡單易行,其(qi)中反激(ji)(ji)式(shi)的輸入電壓范圍寬,常與PFC結合在一起(qi),其(qi)應用更(geng)加(jia)廣(guang)泛(fan)是反激(ji)(ji)式(shi)隔(ge)離(li)(li)驅(qu)動。
(2)非(fei)隔離(li)式:隔離(li)型驅動器一般由電(dian)(dian)池、蓄(xu)電(dian)(dian)池、穩壓電(dian)(dian)源供電(dian)(dian),主(zhu)要用于便攜式電(dian)(dian)子產品、礦燈(deng)、汽(qi)車等用電(dian)(dian)設備。