2024十大(da)LED驅動(dong)(dong)電源(yuan)品(pin)(pin)牌(pai)排行榜(bang)(bang)是CN10排排榜(bang)(bang)技術研究部(bu)門(men)和CNPP品(pin)(pin)牌(pai)數(shu)據(ju)(ju)研究部(bu)門(men)重磅推(tui)出(chu)的LED驅動(dong)(dong)電源(yuan)十大(da)名牌(pai),榜(bang)(bang)單由CN10/CNPP品(pin)(pin)牌(pai)數(shu)據(ju)(ju)研究部(bu)門(men)通(tong)過資料(liao)收集整理并基于大(da)數(shu)據(ju)(ju)統(tong)計(ji)、云計(ji)算、人工智能、投(tou)票點贊以及(ji)根據(ju)(ju)市場和參(can)數(shu)條件變化專業測評而得出(chu)。旨在引起社會的廣泛關注,引領行業發展方(fang)向,并推(tui)動(dong)(dong)更(geng)多(duo)LED驅動(dong)(dong)電源(yuan)品(pin)(pin)牌(pai)快(kuai)速發展,為眾多(duo)LED驅動(dong)(dong)電源(yuan)實(shi)力企業提供(gong)(gong)充分展示自身實(shi)力的平(ping)臺(tai),排序(xu)不分先后,僅提供(gong)(gong)參(can)考(kao)使用。
1、按(an)驅動方式(shi)分為恒(heng)流式(shi)和(he)恒(heng)壓式(shi)
(1)恒(heng)流(liu)式:恒(heng)流(liu)式電(dian)路特(te)點(dian)是輸出電(dian)流(liu)恒(heng)定(ding),輸出電(dian)壓(ya)隨(sui)著負(fu)載電(dian)阻大(da)小變(bian)化(hua)而變(bian)化(hua),恒(heng)流(liu)式電(dian)源驅動LED是較為(wei)(wei)理(li)想的方案并(bing)且不(bu)怕負(fu)載短路,LED亮(liang)度一致性較好。缺(que)點(dian):成本昂貴、禁止負(fu)載完(wan)全開路、LED數量(liang)不(bu)宜過多,因為(wei)(wei)電(dian)源都有最大(da)承受電(dian)流(liu)以及電(dian)壓(ya)。
(2)恒壓(ya)式(shi):恒壓(ya)式(shi)驅(qu)動(dong)電(dian)(dian)路特點(dian)是(shi)輸(shu)出電(dian)(dian)壓(ya)恒定,輸(shu)出電(dian)(dian)流隨著負載電(dian)(dian)阻大(da)小變(bian)(bian)化(hua)而變(bian)(bian)化(hua),電(dian)(dian)壓(ya)不會很高。缺點(dian):禁止負載完全短路、電(dian)(dian)壓(ya)波(bo)動(dong)會影(ying)響LED亮度。
2、按電路結構分(fen)為電容降壓(ya)(ya)、變壓(ya)(ya)器(qi)降壓(ya)(ya)、電阻降壓(ya)(ya)、RCC降壓(ya)(ya)、PWM控制式
(1)電(dian)容(rong)降壓(ya)(ya):采用電(dian)容(rong)降壓(ya)(ya)方式的LED電(dian)源容(rong)易(yi)容(rong)易(yi)受電(dian)網電(dian)壓(ya)(ya)波動的影響,沖擊電(dian)流過大,電(dian)源效率低,但是結(jie)構(gou)簡(jian)單。
(2)變壓(ya)器降壓(ya):這種方式轉換效(xiao)率(lv)低下,可靠性不高(gao),變壓(ya)器笨(ben)重。
(3)電阻降(jiang)壓:這種方式(shi)(shi)與電容(rong)降(jiang)壓方式(shi)(shi)差不多,只(zhi)不過電阻需要消耗(hao)更大的(de)電能,因此電源(yuan)效率(lv)也是比較低下(xia)。
(4)RCC降壓(ya)式:這種方式應用的就多一(yi)點,不僅因為它的穩壓(ya)范圍寬,同時它的電(dian)源利用效率(lv)也(ye)能達到(dao)70%多,但是它的負(fu)載電(dian)壓(ya)紋波較大。
(5)PWM控制式(shi):采用PWM這(zhe)種(zhong)方(fang)式(shi)就不(bu)得不(bu)提(ti)一下了,因為就現在而(er)言PWM控制方(fang)式(shi)設計(ji)的LED電(dian)(dian)源(yuan)(yuan)是(shi)比較(jiao)理(li)想的,這(zhe)種(zhong)LED驅動電(dian)(dian)源(yuan)(yuan)輸出電(dian)(dian)壓或電(dian)(dian)流都很(hen)穩(wen)定,電(dian)(dian)源(yuan)(yuan)轉換(huan)效率也能達到80%,甚(shen)至90%以(yi)上,值得注意的是(shi),這(zhe)種(zhong)電(dian)(dian)源(yuan)(yuan)還(huan)可(ke)以(yi)附加多重保護電(dian)(dian)路。
3、按(an)輸入輸出是否隔離(li)可分為隔離(li)式(shi)和非隔離(li)式(shi)
(1)隔(ge)離(li)式(shi)(shi)(shi):隔(ge)離(li)是為了(le)安全起見,通(tong)過變壓(ya)(ya)器(qi)將(jiang)輸(shu)入輸(shu)出進行隔(ge)離(li)。常(chang)見拓(tuo)撲類型有正激式(shi)(shi)(shi)、反激式(shi)(shi)(shi)、半橋式(shi)(shi)(shi)、全橋式(shi)(shi)(shi)和推挽式(shi)(shi)(shi)等(deng)。正激式(shi)(shi)(shi)和反激式(shi)(shi)(shi)拓(tuo)撲多用于小功率(lv)場合,器(qi)件(jian)少(shao)而(er)簡單易(yi)行,其中(zhong)反激式(shi)(shi)(shi)的(de)輸(shu)入電壓(ya)(ya)范(fan)圍寬,常(chang)與PFC結合在一(yi)起,其應(ying)用更加廣(guang)泛是反激式(shi)(shi)(shi)隔(ge)離(li)驅動。
(2)非隔離式(shi):隔離型驅(qu)動器一般由電(dian)(dian)池(chi)、蓄電(dian)(dian)池(chi)、穩壓電(dian)(dian)源供電(dian)(dian),主(zhu)要用于便攜式(shi)電(dian)(dian)子產品、礦燈、汽車等用電(dian)(dian)設備。