一、dcdc電源模塊原理是什么

dcdc電(dian)(dian)(dian)源模塊原理：假設Q為(wei)(wei)開(kai)關管(guan)，L為(wei)(wei)儲(chu)能(neng)電(dian)(dian)(dian)感(gan)，D為(wei)(wei)整(zheng)流(liu)管(guan)，C為(wei)(wei)濾波電(dian)(dian)(dian)容，RL為(wei)(wei)負(fu)載。當(dang)煽(shan)動脈沖為(wei)(wei)高電(dian)(dian)(dian)往常，開(kai)關管(guan)Q豐滿導(dao)通(tong)(tong)，整(zheng)流(liu)管(guan)D截(jie)止，輸(shu)入電(dian)(dian)(dian)壓(ya)加在電(dian)(dian)(dian)感(gan)L上(shang)，電(dian)(dian)(dian)感(gan)L以(yi)磁能(neng)辦法存儲(chu)能(neng)量(liang)，當(dang)Q截(jie)止時期，整(zheng)流(liu)管(guan)D導(dao)通(tong)(tong)，電(dian)(dian)(dian)感(gan)L貯存的能(neng)量(liang)經D開(kai)釋，在電(dian)(dian)(dian)容C兩頭發作直(zhi)流(liu)電(dian)(dian)(dian)壓(ya)，然后為(wei)(wei)負(fu)載RL供應(ying)供電(dian)(dian)(dian)電(dian)(dian)(dian)源。在給(gei)定條件(jian)下，輸(shu)出端(duan)電(dian)(dian)(dian)壓(ya)的凹凸由Q的豐滿導(dao)通(tong)(tong)時刻(ke)長短挑選，即由基極(ji)所加煽(shan)動電(dian)(dian)(dian)壓(ya)的脈沖寬度(du)挑選。

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二、dcdc電源模塊的優點有哪些

1、采(cai)用(yong)隔(ge)離(li)式設(she)計，可以有效的隔(ge)離(li)來自一次側設(she)備(bei)帶(dai)來的共模干擾對系統(tong)的影響，使負(fu)載能夠穩定的工作。

2、可以(yi)進行(xing)電(dian)(dian)(dian)壓轉換，不(bu)同的(de)負(fu)載需(xu)要(yao)不(bu)同的(de)供電(dian)(dian)(dian)電(dian)(dian)(dian)壓，例如控制(zhi)IC需(xu)要(yao)5V、3.3V、1.8V等；信號采集用的(de)運放則(ze)(ze)需(xu)要(yao)±15V；繼(ji)電(dian)(dian)(dian)器(qi)則(ze)(ze)需(xu)要(yao)12V，24V。而母線電(dian)(dian)(dian)壓多為24V，因此需(xu)要(yao)進行(xing)電(dian)(dian)(dian)壓轉換。

3、輸出穩(wen)定、母線(xian)電壓(ya)(ya)在長距離傳輸過程中會存在線(xian)損，故到(dao)PCB板級時電壓(ya)(ya)較低，而負載需(xu)要穩(wen)定的電壓(ya)(ya)，因此需(xu)要寬壓(ya)(ya)輸入，穩(wen)壓(ya)(ya)輸出。

4、具(ju)備保(bao)護功(gong)能(neng)，電源需要在異(yi)常情況下，保(bao)護系(xi)統的負(fu)載和本身不壞。