1、按驅動(dong)方式(shi)分為恒流式(shi)和恒壓式(shi)

（1）恒流式：恒流式電(dian)(dian)路特點是輸(shu)出電(dian)(dian)流恒定，輸(shu)出電(dian)(dian)壓隨著負(fu)載(zai)電(dian)(dian)阻(zu)大(da)小變(bian)化而變(bian)化，恒流式電(dian)(dian)源(yuan)驅動LED是較(jiao)為理想(xiang)的(de)方案并且不怕負(fu)載(zai)短路，LED亮度一致性(xing)較(jiao)好。缺點：成本昂(ang)貴、禁止負(fu)載(zai)完全開路、LED數量不宜過多，因(yin)為電(dian)(dian)源(yuan)都有最大(da)承(cheng)受電(dian)(dian)流以及電(dian)(dian)壓。

（2）恒(heng)壓(ya)(ya)式：恒(heng)壓(ya)(ya)式驅動(dong)電路特點是輸出(chu)(chu)電壓(ya)(ya)恒(heng)定，輸出(chu)(chu)電流(liu)隨著(zhu)負(fu)載(zai)電阻(zu)大(da)小變化(hua)而變化(hua)，電壓(ya)(ya)不(bu)會很高。缺點：禁止(zhi)負(fu)載(zai)完(wan)全短(duan)路、電壓(ya)(ya)波動(dong)會影響(xiang)LED亮(liang)度。

2、按電(dian)路結構分(fen)為電(dian)容(rong)降(jiang)壓(ya)、變壓(ya)器降(jiang)壓(ya)、電(dian)阻降(jiang)壓(ya)、RCC降(jiang)壓(ya)、PWM控制(zhi)式(shi)

（1）電(dian)(dian)(dian)容(rong)降(jiang)壓：采用電(dian)(dian)(dian)容(rong)降(jiang)壓方式的(de)LED電(dian)(dian)(dian)源容(rong)易容(rong)易受電(dian)(dian)(dian)網電(dian)(dian)(dian)壓波動(dong)的(de)影(ying)響，沖擊電(dian)(dian)(dian)流過大，電(dian)(dian)(dian)源效率低，但是結構簡(jian)單。

（2）變壓器(qi)降壓：這種方式轉換效(xiao)率(lv)低下，可(ke)靠(kao)性不高，變壓器(qi)笨重(zhong)。

（3）電(dian)阻(zu)降(jiang)壓(ya)(ya)：這種方(fang)式與電(dian)容降(jiang)壓(ya)(ya)方(fang)式差不(bu)多，只(zhi)不(bu)過電(dian)阻(zu)需要消耗(hao)更大的電(dian)能，因(yin)此電(dian)源效(xiao)率也是比較低(di)下。

（4）RCC降壓(ya)式：這種(zhong)方式應用的(de)就多一(yi)點(dian)，不僅因為它的(de)穩壓(ya)范圍寬(kuan)，同時(shi)它的(de)電源利(li)用效率也能達到70%多，但(dan)是它的(de)負載電壓(ya)紋波較(jiao)大。

（5）PWM控制式(shi)：采用(yong)PWM這種(zhong)方式(shi)就不得(de)不提一下了，因為就現(xian)在而(er)言PWM控制方式(shi)設計的LED電(dian)(dian)源(yuan)是比較理(li)想的，這種(zhong)LED驅動(dong)電(dian)(dian)源(yuan)輸出電(dian)(dian)壓或電(dian)(dian)流都(dou)很穩定，電(dian)(dian)源(yuan)轉(zhuan)換效率也能達到80%，甚至90%以上(shang)，值得(de)注意的是，這種(zhong)電(dian)(dian)源(yuan)還可(ke)以附加多(duo)重保(bao)護電(dian)(dian)路。

3、按輸(shu)入(ru)輸(shu)出是否隔(ge)(ge)離可分為隔(ge)(ge)離式和非隔(ge)(ge)離式

（1）隔(ge)離(li)式(shi)(shi)(shi)(shi)：隔(ge)離(li)是為了安全起見，通(tong)過(guo)變壓(ya)器將輸入(ru)輸出進行隔(ge)離(li)。常(chang)見拓(tuo)撲(pu)類型有正激式(shi)(shi)(shi)(shi)、反(fan)激式(shi)(shi)(shi)(shi)、半橋式(shi)(shi)(shi)(shi)、全橋式(shi)(shi)(shi)(shi)和推挽式(shi)(shi)(shi)(shi)等。正激式(shi)(shi)(shi)(shi)和反(fan)激式(shi)(shi)(shi)(shi)拓(tuo)撲(pu)多用于小功率(lv)場合，器件少而簡單易行，其中反(fan)激式(shi)(shi)(shi)(shi)的輸入(ru)電壓(ya)范圍(wei)寬，常(chang)與PFC結(jie)合在一起，其應用更(geng)加廣泛是反(fan)激式(shi)(shi)(shi)(shi)隔(ge)離(li)驅動。

（2）非隔(ge)離式(shi)：隔(ge)離型驅動器一般(ban)由電(dian)(dian)(dian)池、蓄電(dian)(dian)(dian)池、穩壓(ya)電(dian)(dian)(dian)源供電(dian)(dian)(dian)，主要用(yong)于(yu)便攜式(shi)電(dian)(dian)(dian)子產品、礦燈、汽車等用(yong)電(dian)(dian)(dian)設備。