一、電源板是什么

電源板，顧名思義就是一種處理電源的主板。電源板在很多的電子產品里面都會使用到，包括我們的電腦、手(shou)機以(yi)及平板(ban)電(dian)(dian)(dian)腦(nao)等等都會(hui)使用到(dao)電(dian)(dian)(dian)源板(ban)。電(dian)(dian)(dian)源板(ban)對于電(dian)(dian)(dian)子產品是非常重要的，所以(yi)市場(chang)上也有(you)(you)很多品牌的電(dian)(dian)(dian)源板(ban)，他們有(you)(you)好有(you)(you)壞(huai)，需要我們在(zai)購買(mai)的時候(hou)仔細辨別(bie)。

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二、電源板工作原理是什么

1、通電(dian)(dian)后(hou)副(fu)電(dian)(dian)源首先啟動工作(zuo)，為主電(dian)(dian)路板微處(chu)理器(qi)控(kong)制系統提(ti)供正(zheng)5伏的工作(zuo)電(dian)(dian)壓(ya)。

2、開機后，副電(dian)源(yuan)為PFC功(gong)率因數校正(zheng)電(dian)路驅動控制電(dian)路UCC28051、主開關(guan)電(dian)源(yuan)驅動巨制電(dian)路DLA001的提供 VCC—ON供電(dian)，主開關(guan)電(dian)源(yuan)啟(qi)動工作，向(xiang)主電(dian)路板負載電(dian)路提供正(zheng)24伏(fu)和正(zheng)12伏(fu)兩種電(dian)壓。

3、經過抗干擾電(dian)路(lu)濾除(chu)市電(dian)中的(de)雜波干擾，整流(liu)、PFC電(dian)感、濾波輸出300V直流(liu)電(dian)壓(ya)到副電(dian)源電(dian)路(lu)，副電(dian)源開始工作輸出+5v電(dian)壓(ya)。

4、經電(dian)(dian)源板(ban)輸出(chu)排(pai)插端口1腳(jiao)到數(shu)字板(ban)CPU電(dian)(dian)路，CPU電(dian)(dian)路經過讀取數(shu)據開(kai)機輸出(chu)高電(dian)(dian)平(ping)開(kai)機電(dian)(dian)壓。

5、經(jing)電(dian)源(yuan)板排插端口2腳到(dao)(dao)電(dian)源(yuan)板穩壓(ya)開(kai)關(guan)機(ji)控制(zhi)電(dian)路(lu)，開(kai)關(guan)機(ji)控制(zhi)電(dian)路(lu)工(gong)作(zuo)，輸出電(dian)壓(ya)到(dao)(dao)PFC振蕩電(dian)路(lu)，輸出高(gao)頻方渡脈(mo)(mo)沖推動PFC開(kai)關(guan)管工(gong)作(zuo)，利用PFC電(dian)感產(chan)生的逆(ni)程脈(mo)(mo)沖。

6、經過(guo)整流(liu)、濾波生成400V的PFC電(dian)(dian)壓(ya)(ya)。PFC電(dian)(dian)壓(ya)(ya)送到(dao)(dao)主電(dian)(dian)源電(dian)(dian)路(lu)(lu)和(he)PFC電(dian)(dian)壓(ya)(ya)檢測電(dian)(dian)路(lu)(lu)，PFC檢測電(dian)(dian)路(lu)(lu)檢測到(dao)(dao)PFC電(dian)(dian)壓(ya)(ya)達(da)到(dao)(dao)400V，PFC檢測開關電(dian)(dian)路(lu)(lu)輸(shu)出電(dian)(dian)壓(ya)(ya)到(dao)(dao)主電(dian)(dian)源震蕩(dang)電(dian)(dian)路(lu)(lu)，振蕩(dang)電(dian)(dian)路(lu)(lu)輸(shu)出高頻(pin)方波脈(mo)沖(chong)到(dao)(dao)主電(dian)(dian)源功率開關管電(dian)(dian)路(lu)(lu)。

7、開關(guan)(guan)管工(gong)作推動開關(guan)(guan)變壓(ya)器工(gong)作，從次級感應(ying)輸出(chu)2組電(dian)壓(ya)，經(jing)過(guo)整(zheng)(zheng)流(liu)、濾波輸出(chu)+12V、+24V電(dian)壓(ya)。到此，整(zheng)(zheng)個電(dian)源板(ban)啟動過(guo)程完成。

8、電視待機時，采用切斷PFC功率因數校正電路驅動控制電路UCC28051、主開關電源驅動控制電路DLA00l的VCC—ON供電，主電源(yuan)停止工作。