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、手機(ji)以(yi)及平板(ban)電(dian)腦等(deng)等(deng)都會使用到電(dian)源(yuan)板(ban)。電(dian)源(yuan)板(ban)對于電(dian)子產品是非常重要的(de)，所以(yi)市場上也有(you)(you)很多品牌(pai)的(de)電(dian)源(yuan)板(ban)，他們有(you)(you)好(hao)有(you)(you)壞，需要我們在購(gou)買的(de)時(shi)候仔(zi)細辨(bian)別。

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二、電源板工作原理是什么

1、通電(dian)后副電(dian)源首先啟動工作(zuo)，為主電(dian)路板微處(chu)理器控制(zhi)系統提供(gong)正5伏的工作(zuo)電(dian)壓。

2、開(kai)機后(hou)，副(fu)電(dian)(dian)(dian)(dian)源為PFC功率因數校正電(dian)(dian)(dian)(dian)路(lu)驅(qu)動(dong)控制電(dian)(dian)(dian)(dian)路(lu)UCC28051、主開(kai)關電(dian)(dian)(dian)(dian)源驅(qu)動(dong)巨制電(dian)(dian)(dian)(dian)路(lu)DLA001的提供 VCC—ON供電(dian)(dian)(dian)(dian)，主開(kai)關電(dian)(dian)(dian)(dian)源啟(qi)動(dong)工作，向主電(dian)(dian)(dian)(dian)路(lu)板負載電(dian)(dian)(dian)(dian)路(lu)提供正24伏和(he)正12伏兩種電(dian)(dian)(dian)(dian)壓。

3、經(jing)過(guo)抗干(gan)擾(rao)電(dian)路濾(lv)除市電(dian)中的雜(za)波干(gan)擾(rao)，整流、PFC電(dian)感、濾(lv)波輸出300V直流電(dian)壓到副電(dian)源電(dian)路，副電(dian)源開始工作輸出+5v電(dian)壓。

4、經(jing)電(dian)源板(ban)輸出排插端口1腳到數字板(ban)CPU電(dian)路，CPU電(dian)路經(jing)過讀取數據開機(ji)輸出高電(dian)平開機(ji)電(dian)壓。

5、經電(dian)源(yuan)板(ban)排插端(duan)口2腳到電(dian)源(yuan)板(ban)穩壓開關機控制電(dian)路，開關機控制電(dian)路工作，輸出(chu)電(dian)壓到PFC振蕩電(dian)路，輸出(chu)高頻方渡脈沖推(tui)動(dong)PFC開關管(guan)工作，利用PFC電(dian)感產生的逆程(cheng)脈沖。

6、經過整流、濾波生成400V的PFC電(dian)(dian)(dian)(dian)壓(ya)。PFC電(dian)(dian)(dian)(dian)壓(ya)送到主(zhu)電(dian)(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)(dian)路和PFC電(dian)(dian)(dian)(dian)壓(ya)檢(jian)測(ce)電(dian)(dian)(dian)(dian)路，PFC檢(jian)測(ce)電(dian)(dian)(dian)(dian)路檢(jian)測(ce)到PFC電(dian)(dian)(dian)(dian)壓(ya)達到400V，PFC檢(jian)測(ce)開關電(dian)(dian)(dian)(dian)路輸出(chu)電(dian)(dian)(dian)(dian)壓(ya)到主(zhu)電(dian)(dian)(dian)(dian)源(yuan)震蕩電(dian)(dian)(dian)(dian)路，振(zhen)蕩電(dian)(dian)(dian)(dian)路輸出(chu)高頻方波脈(mo)沖到主(zhu)電(dian)(dian)(dian)(dian)源(yuan)功率開關管電(dian)(dian)(dian)(dian)路。

7、開(kai)關(guan)管工作(zuo)推動開(kai)關(guan)變壓(ya)器工作(zuo)，從次級感(gan)應輸出2組電(dian)壓(ya)，經過整(zheng)流、濾(lv)波輸出+12V、+24V電(dian)壓(ya)。到(dao)此，整(zheng)個電(dian)源(yuan)板啟動過程完成。

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(qu)動控制(zhi)電(dian)路(lu)DLA00l的VCC—ON供電(dian)，主電(dian)源停止工作。