一、dcdc電源模塊原理是什么

dcdc電(dian)(dian)(dian)(dian)源(yuan)模(mo)塊原(yuan)理：假設(she)Q為開關(guan)管(guan)，L為儲能(neng)電(dian)(dian)(dian)(dian)感，D為整流管(guan)，C為濾波電(dian)(dian)(dian)(dian)容，RL為負(fu)載。當煽動脈沖(chong)為高電(dian)(dian)(dian)(dian)往(wang)常，開關(guan)管(guan)Q豐滿(man)導(dao)通(tong)，整流管(guan)D截止(zhi)，輸(shu)入電(dian)(dian)(dian)(dian)壓加在電(dian)(dian)(dian)(dian)感L上，電(dian)(dian)(dian)(dian)感L以(yi)磁能(neng)辦法存儲能(neng)量，當Q截止(zhi)時(shi)期，整流管(guan)D導(dao)通(tong)，電(dian)(dian)(dian)(dian)感L貯(zhu)存的(de)能(neng)量經D開釋，在電(dian)(dian)(dian)(dian)容C兩頭發(fa)作直流電(dian)(dian)(dian)(dian)壓，然后為負(fu)載RL供(gong)應供(gong)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)源(yuan)。在給定條(tiao)件下，輸(shu)出端(duan)電(dian)(dian)(dian)(dian)壓的(de)凹(ao)凸由(you)Q的(de)豐滿(man)導(dao)通(tong)時(shi)刻(ke)長短挑選，即(ji)由(you)基極所加煽動電(dian)(dian)(dian)(dian)壓的(de)脈沖(chong)寬度挑選。

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二、dcdc電源模塊的優點有哪些

1、采用(yong)隔離式設計，可以有效的隔離來(lai)自一次側設備帶來(lai)的共模干擾對系統的影響(xiang)，使負載能夠穩定的工作。

2、可以(yi)進行電(dian)(dian)壓轉(zhuan)換(huan)(huan)，不(bu)同(tong)的負載需(xu)(xu)要(yao)(yao)(yao)不(bu)同(tong)的供電(dian)(dian)電(dian)(dian)壓，例(li)如控制IC需(xu)(xu)要(yao)(yao)(yao)5V、3.3V、1.8V等(deng)；信(xin)號采集用的運(yun)放則需(xu)(xu)要(yao)(yao)(yao)±15V；繼(ji)電(dian)(dian)器則需(xu)(xu)要(yao)(yao)(yao)12V，24V。而母線電(dian)(dian)壓多為24V，因此需(xu)(xu)要(yao)(yao)(yao)進行電(dian)(dian)壓轉(zhuan)換(huan)(huan)。

3、輸出穩定、母(mu)線電(dian)壓(ya)在長距離傳輸過程中會存在線損，故到PCB板級時電(dian)壓(ya)較(jiao)低，而負載需要(yao)穩定的(de)電(dian)壓(ya)，因(yin)此(ci)需要(yao)寬壓(ya)輸入，穩壓(ya)輸出。

4、具備保護功能(neng)，電源需要在(zai)異(yi)常情況下，保護系統的負(fu)載和本身不壞。