嵌入(ru)式(shi)電(dian)(dian)(dian)(dian)路設計(ji)(ji)的(de)(de)電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)為所(suo)(suo)有(you)功能(neng)模塊提(ti)供(gong)能(neng)源(yuan)(yuan)(yuan)(yuan)，其效(xiao)率(lv)(lv)(lv)和(he)功耗是反(fan)應(ying)電(dian)(dian)(dian)(dian)路設計(ji)(ji)成功與否的(de)(de)絕(jue)dui標志，故將穩(wen)(wen)壓電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)所(suo)(suo)涉及(ji)到的(de)(de)知(zhi)(zhi)識(shi)點(dian)梳理總結(jie)以(yi)鞏固知(zhi)(zhi)識(shi)點(dian)。在(zai)嵌入(ru)式(shi)系統設計(ji)(ji)中所(suo)(suo)使用均是小功率(lv)(lv)(lv)芯(xin)片，而諸如PC電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)等(deng)大功率(lv)(lv)(lv)電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)可(ke)以(yi)直(zhi)(zhi)接找專業(ye)開(kai)關電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)廠(chang)商直(zhi)(zhi)接購買(mai)，且開(kai)發(fa)難度非常大只有(you)專業(ye)電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)工程師才(cai)能(neng)把握。常用直(zhi)(zhi)流(liu)(liu)穩(wen)(wen)壓電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)可(ke)分(fen)為線性(xing)穩(wen)(wen)壓電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)（俗稱LDO）和(he)開(kai)關穩(wen)(wen)壓電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)。前者調整元件工作(zuo)于線性(xing)放大區，通過連續的(de)(de)電(dian)(dian)(dian)(dian)流(liu)(liu)所(suo)(suo)以(yi)其動(dong)態(tai)響(xiang)應(ying)較(jiao)好，但其功耗和(he)體積較(jiao)大轉換(huan)(huan)效(xiao)率(lv)(lv)(lv)很低一般進行降壓轉換(huan)(huan)處理，使用在(zai)較(jiao)敏感模擬電(dian)(dian)(dian)(dian)路。后者體積和(he)功耗較(jiao)小轉換(huan)(huan)效(xiao)率(lv)(lv)(lv)高(gao)，但其電(dian)(dian)(dian)(dian)壓輸(shu)出紋波大，動(dong)態(tai)響(xiang)應(ying)差，可(ke)用于降壓或升壓轉換(huan)(huan)處理。電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)技(ji)術中的(de)(de)恒流(liu)(liu)高(gao)壓直(zhi)(zhi)流(liu)(liu)電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)的(de)(de)自(zi)動(dong)控制(zhi)及(ji)應(ying)用。電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)是直(zhi)(zhi)流(liu)(liu)

嵌(qian)入式電(dian)(dian)(dian)路(lu)設計(ji)的(de)(de)電(dian)(dian)(dian)源為所有(you)功(gong)(gong)(gong)能(neng)模塊提供能(neng)源，其(qi)效(xiao)(xiao)率(lv)和(he)功(gong)(gong)(gong)耗(hao)是(shi)反應(ying)(ying)電(dian)(dian)(dian)路(lu)設計(ji)成功(gong)(gong)(gong)與否(fou)的(de)(de)絕dui標志，故將穩(wen)(wen)壓電(dian)(dian)(dian)源所涉及到的(de)(de)知識點(dian)梳(shu)理(li)總結以鞏固(gu)知識點(dian)。在嵌(qian)入式系統設計(ji)中所使用均是(shi)小功(gong)(gong)(gong)率(lv)芯片而諸如(ru)PC電(dian)(dian)(dian)源等(deng)大(da)(da)(da)功(gong)(gong)(gong)率(lv)電(dian)(dian)(dian)源可(ke)以直(zhi)接找(zhao)專業開關(guan)電(dian)(dian)(dian)源廠商直(zhi)接購買，且(qie)開發難度非常大(da)(da)(da)只有(you)專業電(dian)(dian)(dian)源工程師才能(neng)把握。常用直(zhi)流穩(wen)(wen)壓電(dian)(dian)(dian)源可(ke)分為線性穩(wen)(wen)壓電(dian)(dian)(dian)源（俗(su)稱LDO）和(he)開關(guan)穩(wen)(wen)壓電(dian)(dian)(dian)源。前(qian)者調整(zheng)元件工作(zuo)于(yu)線性放(fang)大(da)(da)(da)區通(tong)過連(lian)續的(de)(de)電(dian)(dian)(dian)流所以其(qi)動(dong)態響(xiang)應(ying)(ying)較好，但(dan)其(qi)功(gong)(gong)(gong)耗(hao)和(he)體積較大(da)(da)(da)轉(zhuan)換(huan)效(xiao)(xiao)率(lv)很低，一般進行降壓轉(zhuan)換(huan)處(chu)理(li)，使用在較敏感(gan)模擬電(dian)(dian)(dian)路(lu)。后者體積和(he)功(gong)(gong)(gong)耗(hao)較小轉(zhuan)換(huan)效(xiao)(xiao)率(lv)高但(dan)其(qi)電(dian)(dian)(dian)壓輸出紋波大(da)(da)(da)，動(dong)態響(xiang)應(ying)(ying)差(cha)，可(ke)用于(yu)降壓或(huo)升壓轉(zhuan)換(huan)處(chu)理(li)。1560W直(zhi)流電(dian)(dian)(dian)源直(zhi)流電(dian)(dian)(dian)源技術的(de)(de)發展現狀及應(ying)(ying)用.

嵌入式(shi)電(dian)(dian)(dian)(dian)路設計(ji)的電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)為(wei)所(suo)(suo)(suo)有功能模(mo)塊提供能源(yuan)(yuan)(yuan)，其效(xiao)(xiao)(xiao)率(lv)和功耗是反應電(dian)(dian)(dian)(dian)路設計(ji)成功與否的絕(jue)dui標志，故將穩(wen)壓(ya)(ya)電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)所(suo)(suo)(suo)涉及到的知識點(dian)梳理總(zong)結以(yi)鞏(gong)固知識點(dian)。在嵌入式(shi)系統設計(ji)中所(suo)(suo)(suo)使用均(jun)是小功率(lv)芯(xin)片。而(er)諸如PC電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)等大(da)功率(lv)電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)可以(yi)直接(jie)找專業(ye)開關電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)廠商(shang)直接(jie)購買(mai)，且開發(fa)難度非常(chang)大(da)只有專業(ye)電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)工(gong)程師才能把握。常(chang)用直流(liu)穩(wen)壓(ya)(ya)電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)可分為(wei)線性(xing)穩(wen)壓(ya)(ya)電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)（俗稱LDO）和開關穩(wen)壓(ya)(ya)電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)。前(qian)者調整元(yuan)件工(gong)作于線性(xing)放(fang)大(da)區，通過(guo)連續(xu)的電(dian)(dian)(dian)(dian)流(liu)所(suo)(suo)(suo)以(yi)其動態(tai)響應較好，但其功耗和體積較大(da)轉(zhuan)換效(xiao)(xiao)(xiao)率(lv)很(hen)低(di)，一(yi)般(ban)進行降壓(ya)(ya)轉(zhuan)換處理，使用在較敏感模(mo)擬電(dian)(dian)(dian)(dian)路。后(hou)者體積和功耗較小轉(zhuan)換效(xiao)(xiao)(xiao)率(lv)高(gao)。但其電(dian)(dian)(dian)(dian)壓(ya)(ya)輸出紋(wen)波大(da)，動態(tai)響應差，可用于降壓(ya)(ya)或升壓(ya)(ya)轉(zhuan)換處理。

當今的(de)智(zhi)能開(kai)關(guan)電(dian)源(yuan)(yuan)具(ju)(ju)有用于內部(bu)(bu)監(jian)視(shi)和(he)(he)通(tong)信(xin)的(de)內部(bu)(bu)微(wei)(wei)處理器(qi)(qi)或(huo)(huo)DSP。微(wei)(wei)處理器(qi)(qi)芯(xin)片具(ju)(ju)有非(fei)常(chang)高的(de)功率要求，所需的(de)幅(fu)度非(fei)常(chang)穩定，更不(bu)用說(shuo)會引起電(dian)磁干(gan)擾的(de)大尖峰和(he)(he)毛刺(ci)，并且輔(fu)(fu)助電(dian)源(yuan)(yuan)的(de)交(jiao)流(liu)(liu)(liu)(liu)(liu)適應(ying)(ying)性大于整(zheng)流(liu)(liu)(liu)(liu)(liu)器(qi)(qi)的(de)正常(chang)工(gong)(gong)作范(fan)圍必須寬泛(fan)。當整(zheng)流(liu)(liu)(liu)(liu)(liu)器(qi)(qi)連接到交(jiao)流(liu)(liu)(liu)(liu)(liu)電(dian)源(yuan)(yuan)時，監(jian)視(shi)部(bu)(bu)分必須首先正常(chang)運行(xing)，執行(xing)自檢和(he)(he)各種條件以查看整(zheng)流(liu)(liu)(liu)(liu)(liu)器(qi)(qi)是否可以打開(kai)。如(ru)果交(jiao)流(liu)(liu)(liu)(liu)(liu)電(dian)壓(ya)過高或(huo)(huo)過低(di)，整(zheng)流(liu)(liu)(liu)(liu)(liu)器(qi)(qi)將(jiang)停止(zhi)工(gong)(gong)作。但是，監(jian)視(shi)部(bu)(bu)分必須繼(ji)續正常(chang)運行(xing)，并保持正常(chang)的(de)監(jian)視(shi)和(he)(he)通(tong)信(xin)。在(zai)(zai)操作過程(cheng)中，某(mou)些電(dian)源(yuan)(yuan)產(chan)品(pin)出現無緣無故(gu)復位情(qing)況。對大容量開(kai)關(guan)電(dian)源(yuan)(yuan)輔(fu)(fu)助電(dian)源(yuan)(yuan)的(de)設計分析表明(ming)，該(gai)輔(fu)(fu)助電(dian)源(yuan)(yuan)在(zai)(zai)不(bu)同的(de)交(jiao)流(liu)(liu)(liu)(liu)(liu)輸入電(dian)壓(ya)和(he)(he)不(bu)同的(de)負(fu)(fu)載(zai)條件下存在(zai)(zai)很多問(wen)題。常(chang)見問(wen)題有交(jiao)流(liu)(liu)(liu)(liu)(liu)適應(ying)(ying)范(fan)圍，低(di)負(fu)(fu)載(zai)能力(li)，工(gong)(gong)作波形不(bu)穩定、不(bu)對稱的(de)情(qing)況，磁偏置，嚴重(zhong)的(de)電(dian)磁干(gan)擾等。直流(liu)(liu)(liu)(liu)(liu)電(dian)源(yuan)(yuan)負(fu)(fu)載(zai)效應(ying)(ying)是什么(me)？如(ru)何降低(di)效應(ying)(ying)？

開關整(zheng)流(liu)(liu)器(qi)(qi)輔(fu)助電(dian)源(yuan)的一(yi)般工作(zuo)原理(li)是輸(shu)入交(jiao)流(liu)(liu)電(dian)源(yuan)，將(jiang)(jiang)其整(zheng)流(liu)(liu)為(wei)高(gao)壓(ya)(ya)直流(liu)(liu)電(dian)源(yuan)，然后(hou)將(jiang)(jiang)電(dian)路(lu)轉(zhuan)(zhuan)換(huan)(huan)為(wei)低(di)(di)壓(ya)(ya)高(gao)頻方波(bo)(bo)然后(hou)將(jiang)(jiang)整(zheng)流(liu)(liu)器(qi)(qi)濾波(bo)(bo)電(dian)路(lu)轉(zhuan)(zhuan)換(huan)(huan)為(wei)系統轉(zhuan)(zhuan)換(huan)(huan)為(wei)低(di)(di)壓(ya)(ya)直流(liu)(liu)電(dian)源(yuan)所(suo)需(xu)的穩定性(xing)。電(dian)壓(ya)(ya)由(you)三端穩壓(ya)(ya)器(qi)(qi)控制(zhi)，直流(liu)(liu)輸(shu)出(chu)為(wei)高(gao)頻轉(zhuan)(zhuan)換(huan)(huan)驅動脈(mo)(mo)沖控制(zhi)環路(lu)提供電(dian)壓(ya)(ya)反(fan)饋(kui)信號。主功率(lv)轉(zhuan)(zhuan)換(huan)(huan)電(dian)路(lu)中的串聯電(dian)阻樣本用作(zuo)電(dian)流(liu)(liu)反(fan)饋(kui)信號，并(bing)且(qie)(qie)功率(lv)轉(zhuan)(zhuan)換(huan)(huan)管(guan)驅動脈(mo)(mo)沖由(you)控制(zhi)芯(xin)片(例如UC3844)及其wai圍電(dian)路(lu)產生。　　可以(yi)看到，當(dang)交(jiao)流(liu)(liu)輸(shu)入電(dian)壓(ya)(ya)低(di)(di)且(qie)(qie)沒有電(dian)流(liu)(liu)反(fan)饋(kui)時，輔(fu)助變壓(ya)(ya)器(qi)(qi)無(wu)法(fa)正常工作(zuo)，波(bo)(bo)形的脈(mo)(mo)沖寬(kuan)(kuan)度(du)(du)不(bu)同，存在抖動，并(bing)且(qie)(qie)示波(bo)(bo)器(qi)(qi)無(wu)法(fa)穩定地(di)捕獲(huo)波(bo)(bo)形。對(dui)于電(dian)流(liu)(liu)反(fan)饋(kui)，波(bo)(bo)形的脈(mo)(mo)沖寬(kuan)(kuan)度(du)(du)寬(kuan)(kuan)而(er)窄，占(zhan)空(kong)比高(gao)達47%，而(er)UC3844的*'大占(zhan)空(kong)比jin為(wei)50%。增加負載(zai)(zai)將(jiang)(jiang)降(jiang)低(di)(di)輸(shu)出(chu)電(dian)壓(ya)(ya)。　　在交(jiao)流(liu)(liu)輸(shu)入的上限和(he)(he)下(xia)限電(dian)壓(ya)(ya)下(xia)穩定地(di)操(cao)作(zuo)輔(fu)助電(dian)源(yuan)，并(bing)且(qie)(qie)在從空(kong)轉(zhuan)(zhuan)到過(guo)載(zai)(zai)的整(zheng)個負載(zai)(zai)范圍內，通常很難穩定地(di)正常操(cao)作(zuo)輔(fu)助電(dian)源(yuan)。技術問題：功率(lv)器(qi)(qi)件的介(jie)電(dian)強(qiang)度(du)(du)和(he)(he)過(guo)載(zai)(zai)能力，高(gao)頻變壓(ya)(ya)器(qi)(qi)的設(she)計，控制(zhi)脈(mo)(mo)沖控制(zhi)回路(lu)的參數選擇(ze)。直流(liu)(liu)電(dian)源(yuan)的性(xing)能強(qiang)弱怎么區分。電(dian)源(yuan)是直流(liu)(liu)

淺談電源模塊與直流電源的應用。電源是直流

嵌入式(shi)電(dian)(dian)(dian)(dian)路設計的(de)電(dian)(dian)(dian)(dian)源(yuan)(yuan)為(wei)(wei)所(suo)有(you)功能(neng)(neng)模塊(kuai)提供能(neng)(neng)源(yuan)(yuan)其(qi)效率和功耗是反應(ying)(ying)電(dian)(dian)(dian)(dian)路設計成功與否(fou)的(de)絕(jue)dui標志(zhi)，故將穩(wen)(wen)壓(ya)(ya)電(dian)(dian)(dian)(dian)源(yuan)(yuan)所(suo)涉(she)及到的(de)知識(shi)點梳理(li)總結以鞏固知識(shi)點。在嵌入式(shi)系統設計中所(suo)使用(yong)(yong)均是小功率芯片，而(er)諸如PC電(dian)(dian)(dian)(dian)源(yuan)(yuan)等大(da)功率電(dian)(dian)(dian)(dian)源(yuan)(yuan)可(ke)以直(zhi)接(jie)找專(zhuan)業(ye)開關電(dian)(dian)(dian)(dian)源(yuan)(yuan)廠商直(zhi)接(jie)購買，且開發難度非常大(da)只(zhi)有(you)專(zhuan)業(ye)電(dian)(dian)(dian)(dian)源(yuan)(yuan)工程(cheng)師才能(neng)(neng)把握(wo)。常用(yong)(yong)直(zhi)流穩(wen)(wen)壓(ya)(ya)電(dian)(dian)(dian)(dian)源(yuan)(yuan)可(ke)分為(wei)(wei)線性穩(wen)(wen)壓(ya)(ya)電(dian)(dian)(dian)(dian)源(yuan)(yuan)（俗稱LDO）和開關穩(wen)(wen)壓(ya)(ya)電(dian)(dian)(dian)(dian)源(yuan)(yuan)。前者調整元(yuan)件工作于線性放大(da)區，通(tong)過連續的(de)電(dian)(dian)(dian)(dian)流所(suo)以其(qi)動(dong)態響應(ying)(ying)較好但(dan)其(qi)功耗和體積(ji)較大(da)轉(zhuan)換(huan)效率很低(di)一般進行(xing)降壓(ya)(ya)轉(zhuan)換(huan)處理(li)，使用(yong)(yong)在較敏感模擬電(dian)(dian)(dian)(dian)路。后(hou)者體積(ji)和功耗較小轉(zhuan)換(huan)效率高，但(dan)其(qi)電(dian)(dian)(dian)(dian)壓(ya)(ya)輸(shu)出紋波大(da)，動(dong)態響應(ying)(ying)差，可(ke)用(yong)(yong)于降壓(ya)(ya)或升壓(ya)(ya)轉(zhuan)換(huan)處理(li)。電(dian)(dian)(dian)(dian)源(yuan)(yuan)是直(zhi)流

本文來(lai)自沈陽(yang)喜納多采暖工程有限(xian)公司：//zjlong.cn/Article/65d399745.html