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)機以及平(ping)板電(dian)(dian)腦等(deng)等(deng)都會使用到電(dian)(dian)源(yuan)板。電(dian)(dian)源(yuan)板對于電(dian)(dian)子產品是非常重要的，所以市場(chang)上也有很多(duo)品牌的電(dian)(dian)源(yuan)板，他(ta)們(men)有好有壞，需(xu)要我(wo)們(men)在(zai)購買的時候仔(zi)細辨別。

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二、電源板工作原理是什么

1、通電后副電源首先啟動工作(zuo)，為主電路板微處理(li)器控制(zhi)系(xi)統提(ti)供正5伏的工作(zuo)電壓。

2、開(kai)機后，副(fu)電(dian)源(yuan)為PFC功率(lv)因數校正電(dian)路(lu)(lu)驅(qu)動控制電(dian)路(lu)(lu)UCC28051、主(zhu)開(kai)關(guan)電(dian)源(yuan)驅(qu)動巨制電(dian)路(lu)(lu)DLA001的提供(gong) VCC—ON供(gong)電(dian)，主(zhu)開(kai)關(guan)電(dian)源(yuan)啟動工作，向主(zhu)電(dian)路(lu)(lu)板負載電(dian)路(lu)(lu)提供(gong)正24伏(fu)和正12伏(fu)兩種電(dian)壓。

3、經(jing)過抗干擾(rao)電(dian)(dian)路濾(lv)除市(shi)電(dian)(dian)中的雜波干擾(rao)，整流、PFC電(dian)(dian)感(gan)、濾(lv)波輸出(chu)300V直流電(dian)(dian)壓到副電(dian)(dian)源電(dian)(dian)路，副電(dian)(dian)源開(kai)始工作(zuo)輸出(chu)+5v電(dian)(dian)壓。

4、經電(dian)源(yuan)板輸(shu)出排插端口1腳到數字板CPU電(dian)路，CPU電(dian)路經過讀取(qu)數據開機輸(shu)出高電(dian)平(ping)開機電(dian)壓。

5、經電(dian)(dian)(dian)源板排插端口2腳到(dao)電(dian)(dian)(dian)源板穩壓開(kai)關機(ji)控(kong)(kong)制(zhi)電(dian)(dian)(dian)路(lu)(lu)(lu)，開(kai)關機(ji)控(kong)(kong)制(zhi)電(dian)(dian)(dian)路(lu)(lu)(lu)工(gong)作(zuo)，輸出電(dian)(dian)(dian)壓到(dao)PFC振蕩電(dian)(dian)(dian)路(lu)(lu)(lu)，輸出高頻方渡脈沖推動PFC開(kai)關管工(gong)作(zuo)，利(li)用(yong)PFC電(dian)(dian)(dian)感產生的逆程脈沖。

6、經過整流(liu)、濾波生成(cheng)400V的PFC電(dian)(dian)壓。PFC電(dian)(dian)壓送到(dao)主電(dian)(dian)源(yuan)電(dian)(dian)路(lu)(lu)和PFC電(dian)(dian)壓檢測電(dian)(dian)路(lu)(lu)，PFC檢測電(dian)(dian)路(lu)(lu)檢測到(dao)PFC電(dian)(dian)壓達到(dao)400V，PFC檢測開(kai)關電(dian)(dian)路(lu)(lu)輸出電(dian)(dian)壓到(dao)主電(dian)(dian)源(yuan)震蕩(dang)(dang)電(dian)(dian)路(lu)(lu)，振蕩(dang)(dang)電(dian)(dian)路(lu)(lu)輸出高頻方波脈(mo)沖到(dao)主電(dian)(dian)源(yuan)功率開(kai)關管電(dian)(dian)路(lu)(lu)。

7、開(kai)關管(guan)工作(zuo)推動開(kai)關變壓器工作(zuo)，從(cong)次級(ji)感應輸出(chu)(chu)2組電(dian)壓，經(jing)過(guo)整(zheng)流(liu)、濾(lv)波(bo)輸出(chu)(chu)+12V、+24V電(dian)壓。到(dao)此(ci)，整(zheng)個電(dian)源(yuan)板啟動過(guo)程完(wan)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(kong)制電路DLA00l的VCC—ON供電，主電源(yuan)停止工作。