降壓(ya)(ya)模(mo)(mo)塊(kuai)(kuai)電(dian)(dian)(dian)源(yuan)：降壓(ya)(ya)是(shi)指模(mo)(mo)塊(kuai)(kuai)電(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)路(lu)(lu)(lu)的(de)一種工作(zuo)模(mo)(mo)式(shi)(shi)，有(you)些還(huan)同(tong)時支撐升壓(ya)(ya)和(he)降壓(ya)(ya)倆種模(mo)(mo)式(shi)(shi)。降壓(ya)(ya)模(mo)(mo)式(shi)(shi)（Bust）在現實應用(yong)中(zhong)很常見，分為LDO和(he)DC-DC模(mo)(mo)式(shi)(shi)。LDO模(mo)(mo)式(shi)(shi)的(de)芯(xin)片外面(mian)電(dian)(dian)(dian)路(lu)(lu)(lu)設計簡單，只需在輸(shu)(shu)入(ru)和(he)輸(shu)(shu)出端(duan)加上濾波電(dian)(dian)(dian)容(rong)即可。DC-DC模(mo)(mo)式(shi)(shi)的(de)一樣平常必要(yao)外接電(dian)(dian)(dian)容(rong)和(he)電(dian)(dian)(dian)感(gan)，芯(xin)片電(dian)(dian)(dian)路(lu)(lu)(lu)較(jiao)(jiao)復(fu)雜，但是(shi)轉化服(fu)從較(jiao)(jiao)高。那么，其電(dian)(dian)(dian)感(gan)該如何選擇？有(you)什么技巧(qiao)嗎？下(xia)面(mian)淺談(tan)下(xia)如何選擇降壓(ya)(ya)型(xing)模(mo)(mo)塊(kuai)(kuai)電(dian)(dian)(dian)源(yuan)的(de)電(dian)(dian)(dian)感(gan)。為降壓(ya)(ya)型(xing)模(mo)(mo)塊(kuai)(kuai)電(dian)(dian)(dian)源(yuan)選擇電(dian)(dian)(dian)感(gan)必要(yao)確定較(jiao)(jiao)大(da)輸(shu)(shu)入(ru)輸(shu)(shu)出電(dian)(dian)(dian)壓(ya)(ya)、電(dian)(dian)(dian)源(yuan)開關頻率(lv)、較(jiao)(jiao)大(da)紋(wen)波電(dian)(dian)(dian)流和(he)占空比。假設開關頻率(lv)300kHz、輸(shu)(shu)入(ru)電(dian)(dian)(dian)壓(ya)(ya)范圍12V±10%、輸(shu)(shu)出電(dian)(dian)(dian)流1A和(he)較(jiao)(jiao)大(da)紋(wen)波電(dian)(dian)(dian)流300mA。較(jiao)(jiao)大(da)輸(shu)(shu)入(ru)電(dian)(dian)(dian)壓(ya)(ya)值(zhi)為13.2V，對應的(de)占空比為D＝Vo/Vi＝5/13.2＝0.379。其中(zhong)Vo為輸(shu)(shu)出電(dian)(dian)(dian)壓(ya)(ya)、Vi為輸(shu)(shu)出電(dian)(dian)(dian)壓(ya)(ya)。電(dian)(dian)(dian)源(yuan)模(mo)(mo)塊(kuai)(kuai)是(shi)可以直(zhi)接貼裝(zhuang)在印刷電(dian)(dian)(dian)路(lu)(lu)(lu)板上的(de)電(dian)(dian)(dian)源(yuan)供應器。楊浦區ACDC電(dian)(dian)(dian)源(yuan)模(mo)(mo)塊(kuai)(kuai)生產(chan)商

伴(ban)隨著半導(dao)體(ti)工(gong)藝技術(shu)的(de)(de)(de)不斷進步，PCB板上的(de)(de)(de)芯片和(he)元(yuan)器件功(gong)(gong)(gong)能(neng)更(geng)(geng)(geng)(geng)高、運行速(su)度(du)更(geng)(geng)(geng)(geng)快、體(ti)積更(geng)(geng)(geng)(geng)小，驅使電源(yuan)管理IC提供更(geng)(geng)(geng)(geng)低更(geng)(geng)(geng)(geng)較準的(de)(de)(de)電壓(ya)(ya)、更(geng)(geng)(geng)(geng)大(da)的(de)(de)(de)電流、更(geng)(geng)(geng)(geng)嚴格(ge)的(de)(de)(de)電壓(ya)(ya)反(fan)饋精度(du)、更(geng)(geng)(geng)(geng)高的(de)(de)(de)效(xiao)率(lv)性能(neng)。另一方面(mian)，電源(yuan)管理IC應用領(ling)域不斷擴張和(he)深入(ru)，實(shi)現更(geng)(geng)(geng)(geng)優異(yi)的(de)(de)(de)控制功(gong)(gong)(gong)能(neng)、更(geng)(geng)(geng)(geng)智(zhi)能(neng)的(de)(de)(de)控制環路、更(geng)(geng)(geng)(geng)快速(su)的(de)(de)(de)動態響應特(te)性、更(geng)(geng)(geng)(geng)簡(jian)(jian)化的(de)(de)(de)外面(mian)布局設(she)計。所以簡(jian)(jian)化設(she)計，數(shu)字化、模塊化、智(zhi)能(neng)化電源(yuan)IC是(shi)必然的(de)(de)(de)發展趨勢。設(she)計并制作用于電池(chi)儲能(neng)裝置的(de)(de)(de)簡(jian)(jian)易(yi)不間斷直流電流，實(shi)現電池(chi)的(de)(de)(de)充放(fang)電功(gong)(gong)(gong)能(neng)，功(gong)(gong)(gong)能(neng)可由按(an)鍵設(she)定(ding)，亦(yi)可自動轉換。電池(chi)組由18650型鋰(li)離子(zi)電池(chi)串聯組成。所用電阻阻值誤差(cha)的(de)(de)(de)值不大(da)于5%。楊浦區ACDC電源(yuan)模塊多少錢(qian)ac dc電源(yuan)模塊一般(ban)輸出功(gong)(gong)(gong)率(lv)為20W，具有極(ji)低的(de)(de)(de)空載損耗。

每個模(mo)塊(kuai)(kuai)(kuai)可(ke)以被嚴格(ge)測(ce)試(shi)，以確保高可(ke)靠性，包括功率測(ce)試(shi)中，為(wei)了分別消(xiao)除不(bu)合(he)格(ge)產品。與(yu)(yu)此相反，集成(cheng)的(de)解決(jue)方案將(jiang)是測(ce)試(shi)更困難，因(yin)為(wei)整(zheng)個電源系統(tong)的(de)電路與(yu)(yu)該系統(tong)的(de)其它功能緊密接觸在一起(qi)。不(bu)同(tong)的(de)供應(ying)商管(guan)理可(ke)以通過(guo)按照現(xian)有的(de)技(ji)術(shu)(shu)發展(zhan)(zhan)標(biao)準(zhun)進行設(she)計(ji)(ji)(ji)同(tong)一大小(xiao)的(de)模(mo)塊(kuai)(kuai)(kuai)，為(wei)設(she)計(ji)(ji)(ji)電源供應(ying)器(qi)的(de)工程師提供多種方式不(bu)同(tong)的(de)選(xuan)擇。各模(mo)塊(kuai)(kuai)(kuai)的(de)設(she)計(ji)(ji)(ji)和測(ce)試(shi)都是按照規(gui)定的(de)標(biao)準(zhun)進行，有利于(yu)降低(di)使用新技(ji)術(shu)(shu)來承擔的(de)風險。若(ruo)采用集成(cheng)式的(de)解決(jue)中國方案，一旦電源供應(ying)管(guan)理系統(tong)發展(zhan)(zhan)出現(xian)一些問(wen)題(ti)，便需要將(jiang)整(zheng)塊(kuai)(kuai)(kuai)主機板更換；若(ruo)采用不(bu)同(tong)模(mo)塊(kuai)(kuai)(kuai)式的(de)設(she)計(ji)(ji)(ji)，只要將(jiang)這些問(wen)題(ti)分析模(mo)塊(kuai)(kuai)(kuai)更換便可(ke)，這樣有助節省(sheng)成(cheng)本及開發時間。

AC/DC變(bian)(bian)(bian)換(huan)是將交(jiao)流(liu)變(bian)(bian)(bian)換(huan)為(wei)直流(liu)，其功率流(liu)向可以是雙向的(de)(de)，功率流(liu)由電(dian)(dian)源(yuan)流(liu)向負(fu)載(zai)(zai)的(de)(de)稱為(wei)"整流(liu)"，功率流(liu)由負(fu)載(zai)(zai)返(fan)回電(dian)(dian)源(yuan)的(de)(de)稱為(wei)"有(you)源(yuan)逆變(bian)(bian)(bian)"。AC/DC變(bian)(bian)(bian)換(huan)器輸入為(wei)50/60Hz的(de)(de)交(jiao)流(liu)電(dian)(dian)，因(yin)必(bi)須(xu)(xu)經整流(liu)、濾波(bo)，因(yin)此(ci)體積相對較大(da)(da)的(de)(de)濾波(bo)電(dian)(dian)容器是必(bi)不可少的(de)(de)，同時因(yin)遇(yu)到安(an)全(quan)標(biao)準(如UL、CCEE等)及(ji)EMC指(zhi)令的(de)(de)限制(如IEC、、FCC、CSA)，交(jiao)流(liu)輸入側必(bi)須(xu)(xu)加(jia)EMC濾波(bo)及(ji)使(shi)用(yong)符(fu)合(he)安(an)全(quan)標(biao)準的(de)(de)元件，這樣(yang)(yang)就(jiu)限制AC/DC電(dian)(dian)源(yuan)體積的(de)(de)小型(xing)化，另外，由于內部(bu)(bu)的(de)(de)高頻、高壓、大(da)(da)電(dian)(dian)流(liu)開關動作，使(shi)得解決EMC電(dian)(dian)磁(ci)兼(jian)容問題(ti)難度(du)(du)加(jia)大(da)(da)，也(ye)就(jiu)對內部(bu)(bu)高密度(du)(du)安(an)裝電(dian)(dian)路設(she)計(ji)提(ti)出(chu)了很高的(de)(de)要求，由于同樣(yang)(yang)的(de)(de)原因(yin)，高電(dian)(dian)壓、大(da)(da)電(dian)(dian)流(liu)開關使(shi)得電(dian)(dian)源(yuan)工(gong)作損(sun)耗增大(da)(da)，限制了AC/DC變(bian)(bian)(bian)換(huan)器模塊化的(de)(de)進(jin)程(cheng)，因(yin)此(ci)必(bi)須(xu)(xu)采(cai)用(yong)電(dian)(dian)源(yuan)系統優化設(she)計(ji)方(fang)法(fa)才能使(shi)其工(gong)作效率達到一定的(de)(de)滿意程(cheng)度(du)(du)。AC-DC開關電(dian)(dian)源(yuan)又被稱為(wei)一次(ci)電(dian)(dian)源(yuan)。

acdc電(dian)(dian)(dian)(dian)源(yuan)模(mo)(mo)塊(kuai)(kuai)應(ying)用(yong)(yong)(yong)于(yu)(yu)各種(zhong)電(dian)(dian)(dian)(dian)力儀表(biao)、公變終端(duan)、專(zhuan)變終端(duan)、大客(ke)戶終端(duan)、變電(dian)(dian)(dian)(dian)站終端(duan)；更(geng)在電(dian)(dian)(dian)(dian)力行(xing)業(ye)、儀器儀表(biao)、工業(ye)控(kong)制、通(tong)訊設備、醫療行(xing)業(ye)等(deng)多(duo)個(ge)領(ling)域(yu)都有(you)重(zhong)(zhong)要(yao)(yao)的(de)應(ying)用(yong)(yong)(yong)。同時也可(ke)應(ying)用(yong)(yong)(yong)于(yu)(yu)全球各種(zhong)交直流(liu)供電(dian)(dian)(dian)(dian)系統，在對安全隔離，小體積，高(gao)可(ke)靠(kao)性(xing)，要(yao)(yao)求(qiu)多(duo)路輸出，外(wai)面(mian)電(dian)(dian)(dian)(dian)路簡(jian)單(dan)的(de)場合，尤其對電(dian)(dian)(dian)(dian)磁兼容要(yao)(yao)求(qiu)較高(gao)的(de)用(yong)(yong)(yong)戶選用(yong)(yong)(yong)，可(ke)適用(yong)(yong)(yong)于(yu)(yu)電(dian)(dian)(dian)(dian)力自動化裝置(zhi)、繼電(dian)(dian)(dian)(dian)保(bao)護裝置(zhi)、電(dian)(dian)(dian)(dian)力測控(kong)裝置(zhi)等(deng)領(ling)域(yu)。acdc電(dian)(dian)(dian)(dian)源(yuan)模(mo)(mo)塊(kuai)(kuai)普遍應(ying)用(yong)(yong)(yong)于(yu)(yu)各種(zhong)交流(liu)市電(dian)(dian)(dian)(dian)供電(dian)(dian)(dian)(dian)系統，在對安全隔離，小功率，要(yao)(yao)求(qiu)多(duo)路輸出，尤其要(yao)(yao)求(qiu)體積小巧，外(wai)面(mian)電(dian)(dian)(dian)(dian)路簡(jian)單(dan)的(de)場合都有(you)優良(liang)的(de)表(biao)現，更(geng)在電(dian)(dian)(dian)(dian)力行(xing)業(ye)、儀器儀表(biao)、工業(ye)控(kong)制、通(tong)訊設備、醫療行(xing)業(ye)等(deng)多(duo)個(ge)領(ling)域(yu)都有(you)重(zhong)(zhong)要(yao)(yao)的(de)應(ying)用(yong)(yong)(yong)。ACDC模(mo)(mo)塊(kuai)(kuai)電(dian)(dian)(dian)(dian)源(yuan)容值具有(you)等(deng)效的(de)串聯模(mo)(mo)塊(kuai)(kuai)電(dian)(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)(dian)阻。徐匯區ACDC電(dian)(dian)(dian)(dian)源(yuan)模(mo)(mo)塊(kuai)(kuai)品牌哪家好

模(mo)塊電(dian)源具有(you)隔離作用，抗干擾能力強，自(zi)帶保(bao)護(hu)功能，便于(yu)集成。楊浦區ACDC電(dian)源模(mo)塊生產商

電(dian)(dian)源(yuan)(yuan)的(de)(de)(de)(de)過(guo)(guo)載(zai)，與電(dian)(dian)源(yuan)(yuan)的(de)(de)(de)(de)輕負(fu)(fu)(fu)載(zai)相反，是(shi)電(dian)(dian)源(yuan)(yuan)電(dian)(dian)路的(de)(de)(de)(de)負(fu)(fu)(fu)載(zai)電(dian)(dian)路發生(sheng)短路，使(shi)(shi)電(dian)(dian)源(yuan)(yuan)電(dian)(dian)路輸出大(da)電(dian)(dian)流(liu)，超過(guo)(guo)電(dian)(dian)源(yuan)(yuan)所(suo)能(neng)承(cheng)受的(de)(de)(de)(de)范(fan)圍。對于沒有過(guo)(guo)流(liu)保護(hu)的(de)(de)(de)(de)電(dian)(dian)源(yuan)(yuan)模(mo)(mo)塊，輸出穩壓、過(guo)(guo)壓和過(guo)(guo)流(liu)保護(hu)的(de)(de)(de)(de)較(jiao)(jiao)簡(jian)單方法是(shi)將具有過(guo)(guo)流(liu)保護(hu)的(de)(de)(de)(de)線(xian)性(xing)調節器調壓器連接到輸入(ru)端。使(shi)(shi)用(yong)(yong)模(mo)(mo)塊電(dian)(dian)源(yuan)(yuan)前，務必考慮電(dian)(dian)源(yuan)(yuan)系(xi)統模(mo)(mo)塊的(de)(de)(de)(de)溫(wen)(wen)度(du)等級(ji)和實際(ji)發展(zhan)需要的(de)(de)(de)(de)工(gong)作(zuo)溫(wen)(wen)度(du)變(bian)化范(fan)圍。根據負(fu)(fu)(fu)載(zai)功(gong)率和實際(ji)的(de)(de)(de)(de)環境以(yi)及溫(wen)(wen)度(du)數據進行(xing)降額設(she)計(ji)。所(suo)述ZLG致遠(yuan)電(dian)(dian)子P_FLS-1W，降額標記為如圖(tu)4中(zhong)(zhong)所(suo)示，從圖(tu)中(zhong)(zhong)，為-40?105工(gong)作(zuo)溫(wen)(wen)度(du)范(fan)圍℃，高溫(wen)(wen)高于85之(zhi)后可以(yi)清楚地已知℃，需要降低(di)功(gong)率使(shi)(shi)用(yong)(yong)，在(zai)曲線(xian)105℃，0.8W的(de)(de)(de)(de)較(jiao)(jiao)大(da)允(yun)許輸出功(gong)率。在(zai)填(tian)充電(dian)(dian)源(yuan)(yuan)模(mo)(mo)塊中(zhong)(zhong)，由于具有良好的(de)(de)(de)(de)導(dao)熱性(xing)模(mo)(mo)塊，填(tian)充膠(jiao)的(de)(de)(de)(de)溫(wen)(wen)度(du)進一(yi)步降低(di)。楊浦區ACDC電(dian)(dian)源(yuan)(yuan)模(mo)(mo)塊生(sheng)產商

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