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Cyntec開關電源模快DC/DC電(dian)(dian)源(yuan)適(shi)配器(qi)(qi)線指(zhi)電(dian)(dian)流(liu)(liu)轉換成為(wei)電(dian)(dian)流(liu)(liu)的(de)電(dian)(dian)源(yuan)適(shi)配器(qi)(qi)線，從一個確定上(shang)看(kan)，LDO(低(di)壓證(zheng)書差直線電(dian)(dian)壓穩(wen)壓器(qi)(qi))處理芯(xin)片也因該泛(fan)指(zhi)DC/DC電(dian)(dian)開(kai)(kai)關電(dian)(dian)源(yuan)適(shi)配器(qi)(qi)，但應該只將直流(liu)(liu)變(bian)壓器(qi)(qi)電(dian)(dian)源(yuan)適(shi)配器(qi)(qi)更(geng)換到(dao)直流(liu)(liu)變(bian)壓器(qi)(qi)電(dian)(dian)源(yuan)適(shi)配器(qi)(qi)，且本身(shen)準換技(ji)巧是路過電(dian)(dian)開(kai)(kai)關技(ji)巧完工(gong)的(de)電(dian)(dian)開(kai)(kai)關電(dian)(dian)源(yuan)適(shi)配器(qi)(qi)被稱(cheng)為(wei)DC/DC供電(dian)(dian)。

一個功率(lv)變換(huan)(huan)器(qi)，當輸入(ru)、負載(zai)和控制(zhi)均為(wei)固(gu)定值時的工(gong)作狀(zhuang)態(tai)，在開關電(dian)源中，被稱為(wei)穩態(tai)。穩態(tai)下，功率(lv)變換(huan)(huan)器(qi)中的電(dian)感(gan)(gan)滿意電(dian)感(gan)(gan)電(dian)壓伏秒平衡規(gui)律：對(dui)于已工(gong)作在穩態(tai)的Cyntec電(dian)源模塊DC/DC功率(lv)變換(huan)(huan)器(qi)，有(you)源開關導通時加在濾波電(dian)感(gan)(gan)上的正(zheng)向伏秒必定等(deng)于有(you)源開關截至(zhi)時加在該電(dian)感(gan)(gan)上的反向伏秒。

Cyntec電源(yuan)模塊DC/DC芯片主要(yao)是經過反饋(kui)電壓與內部基準(zhun)電壓的的比較，然后調理MOS管驅動波形的占空比，來確保輸(shu)出(chu)電壓的安穩(wen)。

由于(yu)二(er)極管(guan)(guan)(guan)導通時至少存在0.3V的(de)壓降，因此續流二(er)極管(guan)(guan)(guan)D所耗(hao)費的(de)功率將會稱為DC/DC電源主(zhu)要功耗(hao)，然(ran)后嚴(yan)重約束(shu)了效率的(de)提高。為處理該問題，以導通電阻極小的(de)MOS管(guan)(guan)(guan)替(ti)代續流二(er)極管(guan)(guan)(guan)。然(ran)后經過(guo)控制器同時控制開關管(guan)(guan)(guan)和(he)同步整流管(guan)(guan)(guan)，要確(que)保兩個MOS管(guan)(guan)(guan)不能同時導通，負責將會發生短路。

Cyntec電源模塊DC/DC電路的硬(ying)件(jian)規劃參數挑選(xuan)規范

1.設置輸出電(dian)壓：先挑選合適的R2,R2過(guo)小會導致(zhi)(zhi)靜(jing)態(tai)電(dian)流過(guo)大(da)，然(ran)后(hou)導致(zhi)(zhi)加大(da)損(sun)耗；R2太大(da)會導致(zhi)(zhi)靜(jing)態(tai)電(dian)流過(guo)小，而導致(zhi)(zhi)FB引腳的反饋電(dian)壓對噪聲(sheng)靈(ling)敏(min)，一般在數據手冊中(zhong)有推薦(jian)值規模參閱。

2.電(dian)(dian)(dian)感：電(dian)(dian)(dian)感的(de)在挑(tiao)選(xuan)要滿不滿意陪你到(dao)(dao)轉(zhuan)(zhuan)換世界上最大指定直(zhi)流電(dian)(dian)(dian)壓(ya)值(zhi)(zhi)時(shi)，電(dian)(dian)(dian)感直(zhi)流電(dian)(dian)(dian)壓(ya)值(zhi)(zhi)也努(nu)力(li)連(lian)著。在電(dian)(dian)(dian)感摘取(qu)(qu)操作過程中業務(wu)需求(qiu)規納轉(zhuan)(zhuan)換直(zhi)流電(dian)(dian)(dian)壓(ya)值(zhi)(zhi)、紋波、體積(ji)大小(xiao)等多家緣由展開采(cai)取(qu)(qu)。較大的(de)的(de)電(dian)(dian)(dian)感將(jiang)從(cong)而(er)造成 較小(xiao)的(de)紋波直(zhi)流電(dian)(dian)(dian)壓(ya)值(zhi)(zhi)，最后從(cong)而(er)造成 較低(di)的(de)紋波電(dian)(dian)(dian)壓(ya)值(zhi)(zhi)，然而(er)電(dian)(dian)(dian)感越大，將(jiang)有著更具的(de)物理防御(yu)負載(zai)面(mian)積(ji)，越來越高的(de)電(dian)(dian)(dian)容并(bing)聯阻值(zhi)(zhi)和更低(di)的(de)達到(dao)(dao)飽和狀(zhuang)態直(zhi)流電(dian)(dian)(dian)壓(ya)值(zhi)(zhi)。

3.輸出(chu)電(dian)(dian)(dian)(dian)容(rong)：輸出(chu)電(dian)(dian)(dian)(dian)容(rong)的(de)(de)(de)(de)挑選主要(yao)是依據規劃中所需求的(de)(de)(de)(de)輸出(chu)紋(wen)波(bo)(bo)(bo)的(de)(de)(de)(de)要(yao)求來(lai)進(jin)行(xing)選取。電(dian)(dian)(dian)(dian)容(rong)發(fa)生(sheng)的(de)(de)(de)(de)紋(wen)波(bo)(bo)(bo):相對很小，能夠(gou)忽(hu)略不(bu)計(ji);電(dian)(dian)(dian)(dian)容(rong)等效電(dian)(dian)(dian)(dian)感發(fa)生(sheng)的(de)(de)(de)(de)紋(wen)波(bo)(bo)(bo):在300KHz~500KHz以(yi)下(xia)，能夠(gou)忽(hu)略不(bu)計(ji)；電(dian)(dian)(dian)(dian)容(rong)等效電(dian)(dian)(dian)(dian)阻發(fa)生(sheng)的(de)(de)(de)(de)紋(wen)波(bo)(bo)(bo)：與ESR和流(liu)過(guo)電(dian)(dian)(dian)(dian)容(rong)電(dian)(dian)(dian)(dian)流(liu)成正比，該電(dian)(dian)(dian)(dian)流(liu)紋(wen)波(bo)(bo)(bo)主要(yao)是和開關管的(de)(de)(de)(de)開關頻(pin)率(lv)有關，根本為(wei)開關頻(pin)率(lv)的(de)(de)(de)(de)n次諧波(bo)(bo)(bo)，為(wei)了減少紋(wen)波(bo)(bo)(bo)，讓ESR盡量小。

珠(zhu)海市立維創展科技發展重點展示徽(hui)波工作功率調小(xiao)器心片和進囗的電源開關(guan)接口廠品，代理權企(qi)業品牌是指AMCOM、PICO、Cyntec、CUSTOM MMIC、RF-LAMBDA、ADI、QORVO、MA-COM、SOUTHWEST中南紅(hong)外光等，立維(wei)創展(zhan)著力(li)推進為朋友(you)提供數據高品(pin)質的(de)質量、高品(pin)的(de)質量、價格多少(shao)算滿意的(de)紅(hong)外光元元器護膚品(pin)。立維(wei)創展(zhan)管理(li)權(quan)限POS機代理(li)生產商(shang)Cyntec長線的產品，并(bing)且還為國地區市(shi)場供(gong)應技木(mu)蘋(pin)果支(zhi)持(chi)。感謝咨詢了解。。