一、dcdc電源模塊原理是什么

dcdc電(dian)(dian)(dian)(dian)(dian)源模塊(kuai)原理：假設(she)Q為(wei)(wei)開關管(guan)(guan)(guan)(guan)，L為(wei)(wei)儲能電(dian)(dian)(dian)(dian)(dian)感，D為(wei)(wei)整流(liu)管(guan)(guan)(guan)(guan)，C為(wei)(wei)濾(lv)波電(dian)(dian)(dian)(dian)(dian)容，RL為(wei)(wei)負載。當煽動脈沖(chong)為(wei)(wei)高電(dian)(dian)(dian)(dian)(dian)往常，開關管(guan)(guan)(guan)(guan)Q豐滿導通(tong)，整流(liu)管(guan)(guan)(guan)(guan)D截止，輸入電(dian)(dian)(dian)(dian)(dian)壓加在電(dian)(dian)(dian)(dian)(dian)感L上，電(dian)(dian)(dian)(dian)(dian)感L以磁能辦法存(cun)儲能量，當Q截止時(shi)期(qi)，整流(liu)管(guan)(guan)(guan)(guan)D導通(tong)，電(dian)(dian)(dian)(dian)(dian)感L貯存(cun)的(de)能量經D開釋，在電(dian)(dian)(dian)(dian)(dian)容C兩頭發作直流(liu)電(dian)(dian)(dian)(dian)(dian)壓，然后為(wei)(wei)負載RL供(gong)應供(gong)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)源。在給定條件下，輸出端電(dian)(dian)(dian)(dian)(dian)壓的(de)凹凸由(you)Q的(de)豐滿導通(tong)時(shi)刻長短挑(tiao)選，即由(you)基極所加煽動電(dian)(dian)(dian)(dian)(dian)壓的(de)脈沖(chong)寬度(du)挑(tiao)選。

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二、dcdc電源模塊的優點有哪些

1、采用隔離式設計，可以有效的隔離來自一次側設備帶(dai)來的共(gong)模干擾對系統的影響，使負(fu)載能夠穩定的工作。

2、可以進行電(dian)(dian)壓轉(zhuan)換，不(bu)同的負載需要(yao)(yao)不(bu)同的供電(dian)(dian)電(dian)(dian)壓，例如控制IC需要(yao)(yao)5V、3.3V、1.8V等；信號采集用的運(yun)放(fang)則需要(yao)(yao)±15V；繼(ji)電(dian)(dian)器則需要(yao)(yao)12V，24V。而母線電(dian)(dian)壓多為24V，因此需要(yao)(yao)進行電(dian)(dian)壓轉(zhuan)換。

3、輸(shu)出穩(wen)(wen)定、母線(xian)(xian)電(dian)壓(ya)在(zai)長距離傳輸(shu)過程中會存在(zai)線(xian)(xian)損(sun)，故(gu)到PCB板(ban)級(ji)時電(dian)壓(ya)較低，而負載需要穩(wen)(wen)定的(de)電(dian)壓(ya)，因此需要寬壓(ya)輸(shu)入，穩(wen)(wen)壓(ya)輸(shu)出。

4、具備保護功能，電(dian)源需要在(zai)異常情況下，保護系統的負載和本身不壞。