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Cyntec開關電源輸出模塊DC/DC外接電(dian)源(yuan)開關(guan)指直流(liu)(liu)電(dian)壓(ya)(ya)變壓(ya)(ya)器(qi)改(gai)變為直流(liu)(liu)電(dian)壓(ya)(ya)變壓(ya)(ya)器(qi)的外接電(dian)源(yuan)開關(guan)，從該(gai)基本概(gai)念(nian)上看(kan)，LDO(低壓(ya)(ya)證書差(cha)線(xian)形三相(xiang)調壓(ya)(ya)器(qi))集成塊也必須即是DC/DC電(dian)線(xian)，但一半(ban)只將整(zheng)流(liu)(liu)切換(huan)到整(zheng)流(liu)(liu)，且這類切換(huan)措施是 觸點開關(guan)措施進行的電(dian)線(xian)通稱DC/DC電(dian)源(yuan)適配器(qi)。

一個(ge)功率變換(huan)器，當輸入、負(fu)載和控制均為固(gu)定(ding)值時(shi)的工作狀態(tai)，在(zai)開(kai)(kai)關(guan)電(dian)(dian)源(yuan)中，被(bei)稱為穩(wen)態(tai)。穩(wen)態(tai)下，功率變換(huan)器中的電(dian)(dian)感滿意(yi)電(dian)(dian)感電(dian)(dian)壓伏秒平衡(heng)規律(lv)：對于(yu)(yu)已工作在(zai)穩(wen)態(tai)的Cyntec電(dian)(dian)源(yuan)模塊(kuai)DC/DC功率變換(huan)器，有(you)源(yuan)開(kai)(kai)關(guan)導(dao)通時(shi)加在(zai)濾波(bo)電(dian)(dian)感上(shang)的正向伏秒必定(ding)等于(yu)(yu)有(you)源(yuan)開(kai)(kai)關(guan)截至時(shi)加在(zai)該(gai)電(dian)(dian)感上(shang)的反向伏秒。

Cyntec電(dian)源模塊DC/DC芯(xin)片主(zhu)要是經過(guo)反饋電(dian)壓與內部基(ji)準電(dian)壓的的比較，然(ran)后(hou)調(diao)理MOS管驅動波形的占空比，來確保(bao)輸出電(dian)壓的安穩(wen)。

由(you)于二極管(guan)(guan)導(dao)通時至少存在0.3V的(de)(de)壓降(jiang)，因此續流(liu)二極管(guan)(guan)D所耗費(fei)的(de)(de)功率(lv)將會(hui)稱為DC/DC電(dian)源主要功耗，然(ran)后嚴重(zhong)約(yue)束(shu)了(le)效率(lv)的(de)(de)提高。為處理該問題，以導(dao)通電(dian)阻極小的(de)(de)MOS管(guan)(guan)替(ti)代續流(liu)二極管(guan)(guan)。然(ran)后經過控制器同時控制開關管(guan)(guan)和同步(bu)整(zheng)流(liu)管(guan)(guan)，要確保兩個MOS管(guan)(guan)不能同時導(dao)通，負責(ze)將會(hui)發生短路。

Cyntec電(dian)源模塊DC/DC電(dian)路(lu)的硬件(jian)規劃參數挑(tiao)選規范

1.設置輸出電(dian)(dian)壓：先(xian)挑(tiao)選合適的(de)R2,R2過小會導致(zhi)(zhi)靜態電(dian)(dian)流(liu)過大，然后導致(zhi)(zhi)加(jia)大損(sun)耗(hao)；R2太大會導致(zhi)(zhi)靜態電(dian)(dian)流(liu)過小，而導致(zhi)(zhi)FB引腳的(de)反饋(kui)電(dian)(dian)壓對噪聲靈(ling)敏，一般(ban)在(zai)數據手冊中有(you)推薦值規模參閱。

2.電(dian)(dian)(dian)(dian)感：電(dian)(dian)(dian)(dian)感的(de)選好(hao)要貼心陪你到工(gong)作輸入輸出至(zhi)少規程額定(ding)(ding)(ding)(ding)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)額定(ding)(ding)(ding)(ding)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)量(liang)大(da)小(xiao)(xiao)時，電(dian)(dian)(dian)(dian)感額定(ding)(ding)(ding)(ding)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)額定(ding)(ding)(ding)(ding)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)量(liang)大(da)小(xiao)(xiao)也堅守連續式。在電(dian)(dian)(dian)(dian)感的(de)選擇過(guo)程中中所需匯總工(gong)作輸入輸出額定(ding)(ding)(ding)(ding)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)額定(ding)(ding)(ding)(ding)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)量(liang)大(da)小(xiao)(xiao)、紋波、體積大(da)概等幾個因(yin)素分析做出考慮一下(xia)。最大(da)的(de)電(dian)(dian)(dian)(dian)感將造(zao)成(cheng) 較小(xiao)(xiao)的(de)紋波額定(ding)(ding)(ding)(ding)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)額定(ding)(ding)(ding)(ding)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)量(liang)大(da)小(xiao)(xiao)，后來造(zao)成(cheng) 較低的(de)紋波額定(ding)(ding)(ding)(ding)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)，是電(dian)(dian)(dian)(dian)感越大(da)，將具備更好(hao) 的(de)力學被(bei)占建筑面積，會高的(de)關聯內(nei)阻(zu)和(he)更低的(de)飽合額定(ding)(ding)(ding)(ding)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)額定(ding)(ding)(ding)(ding)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)量(liang)大(da)小(xiao)(xiao)。

3.輸出(chu)電(dian)容(rong)(rong)：輸出(chu)電(dian)容(rong)(rong)的(de)(de)挑(tiao)選主要是(shi)依據(ju)規劃中所需求(qiu)的(de)(de)輸出(chu)紋(wen)波(bo)的(de)(de)要求(qiu)來進行選取。電(dian)容(rong)(rong)發生的(de)(de)紋(wen)波(bo):相對很小(xiao)，能夠(gou)忽(hu)略不(bu)計;電(dian)容(rong)(rong)等效電(dian)感發生的(de)(de)紋(wen)波(bo):在300KHz~500KHz以(yi)下，能夠(gou)忽(hu)略不(bu)計；電(dian)容(rong)(rong)等效電(dian)阻發生的(de)(de)紋(wen)波(bo)：與(yu)ESR和(he)流過電(dian)容(rong)(rong)電(dian)流成正(zheng)比(bi)，該電(dian)流紋(wen)波(bo)主要是(shi)和(he)開關(guan)管的(de)(de)開關(guan)頻率有關(guan)，根本為開關(guan)頻率的(de)(de)n次諧(xie)波(bo)，為了減少紋(wen)波(bo)，讓ESR盡量小(xiao)。

廣州市(shi)立維創展創新科技重(zhong)要帶來微波射(she)頻電率放(fang)縮器基帶芯片和國外(wai)外(wai)接(jie)電源包塊(kuai)物料，進口代理國產品牌(pai)構成AMCOM、PICO、Cyntec、CUSTOM MMIC、RF-LAMBDA、ADI、QORVO、MA-COM、SOUTHWEST華東(dong)微(wei)波(bo)射頻通信等(deng)，立(li)維(wei)創(chuang)展傾力為(wei)老客(ke)戶(hu)提(ti)高(gao)高(gao)品(pin)質、優護(hu)膚(fu)品(pin)品(pin)質、報價公開的微(wei)波(bo)射頻通信元功率器件(jian)護(hu)膚(fu)品(pin)。立(li)維(wei)創(chuang)展授權使用代(dai)理(li)加盟經售Cyntec全新(xin)好產品，而且為中國大(da)中國內(nei)地領域提供了方(fang)法(fa)扶(fu)持。受歡迎(ying)網絡咨詢。