符合標準EN55022 - B類標準意法半導體公司的EVLVIP17 - 5WCHG是5W開關電源（SMPS）設計，采用意法半導體公司的VIPER17HN，具有低待機功耗的特性，主要用作旅行電池充電器，如手機，掌上電腦和電子游戲的電池充電。充電器的(de)輸入電(dian)壓為(wei)(wei)90 - 264Vac，頻(pin)率45 - 66Hz，輸出(chu)電(dian)壓5.1伏直流(liu)± 2％，輸出(chu)電(dian)流(liu)1 ± 5％，電(dian)纜壓降補償（0.2V的(de)/甲(jia)），無負載(zai)在高(gao)火線電(dian)壓的(de)輸入功率低(di)于100兆(zhao)瓦，短路保護，并在短路故障消(xiao)除后(hou)自動重起(qi)，印刷電(dian)路板尺寸為(wei)(wei)53 × 26毫(hao)米，安全特性和EN60065兼容，電(dian)磁干(gan)擾滿足標準(zhun)EN5022 - B類標準(zhun)。

     本文介紹了EVLVIP17 - 5WCHG主要特性，電路板外形圖以及詳細電路圖和所用材料清單（BOM）的。 EVLVIP17 - 5WCHG：5瓦的低待機功耗電池充電器演示板的基礎上VIPER17HN的EVLVIP17 - 5WCHG演示板是一個5瓦的作為，如移動電話，掌上電腦和電子游戲應用旅行使用開關電源。該(gai)委(wei)員會(hui)的(de)(de)(de)(de)(de)(de)(de)(de)目的(de)(de)(de)(de)(de)(de)(de)(de)是證明該(gai)VIPER17HN離(li)線(xian)高電(dian)壓(ya)轉(zhuan)換(huan)器(qi)的(de)(de)(de)(de)(de)(de)(de)(de)性(xing)能。其(qi)低(di)功(gong)耗和(he)其(qi)他特性(xing)，由于(yu)良(liang)好的(de)(de)(de)(de)(de)(de)(de)(de)電(dian)氣性(xing)能實現。為了(le)獲(huo)得恒定的(de)(de)(de)(de)(de)(de)(de)(de)輸出(chu)電(dian)壓(ya)和(he)電(dian)流(liu)調節（簡(jian)歷(li)/消委(wei)會(hui)），TSM1052簡(jian)歷(li)/消委(wei)會(hui)控制(zhi)器(qi)上使用(yong)的(de)(de)(de)(de)(de)(de)(de)(de)次(ci)要方(fang)面。這TSM1052是非(fei)常適合這種類型的(de)(de)(de)(de)(de)(de)(de)(de)應用(yong)，提供了(le)一(yi)個非(fei)常小的(de)(de)(de)(de)(de)(de)(de)(de)封裝非(fei)常低(di)的(de)(de)(de)(de)(de)(de)(de)(de)電(dian)流(liu)消耗（采(cai)用(yong)SOT23 - 6L）。該(gai)轉(zhuan)換(huan)器(qi)實現了(le)一(yi)個反激(ji)拓撲(pu)結構，這是理想(xiang)的(de)(de)(de)(de)(de)(de)(de)(de)低(di)功(gong)耗，低(di)成本(ben)的(de)(de)(de)(de)(de)(de)(de)(de)隔離(li)轉(zhuan)換(huan)器(qi)。在(zai)小學方(fang)面，VIPER17HN使用(yong)。該(gai)IC是毒蛇的(de)(de)(de)(de)(de)(de)(de)(de)+家族，從它(ta)的(de)(de)(de)(de)(de)(de)(de)(de)附加(jia)功(gong)能和(he)保(bao)護的(de)(de)(de)(de)(de)(de)(de)(de)利益。此(ci)設(she)備，設(she)計采(cai)用(yong)了(le)一(yi)個多芯片(pian)方(fang)案，包括一(yi)個先(xian)進的(de)(de)(de)(de)(de)(de)(de)(de)電(dian)流(liu)模式(shi)PWM控制(zhi)器(qi)和(he)雪崩(beng)的(de)(de)(de)(de)(de)(de)(de)(de)小幅下降，7封裝堅固800 V的(de)(de)(de)(de)(de)(de)(de)(de)功(gong)率MOSFET。該(gai)轉(zhuan)換(huan)器(qi)在(zai)連續(xu)(xu)和(he)非(fei)連續(xu)(xu)導電(dian)模式(shi)工程取(qu)決(jue)于(yu)輸入(ru)電(dian)壓(ya)（電(dian)路有一(yi)個范圍廣(guang)闊(kuo)的(de)(de)(de)(de)(de)(de)(de)(de)輸入(ru)）和(he)輸出(chu)負載(zai)。

     該控(kong)制器(qi)后綴為“H”規定(ding)，開關頻率是115千赫(he)，內部(bu)固(gu)定(ding)的，允(yun)許的功率元(yuan)件減少。應用程序設計，以降低整體元(yuan)件數量和(he)(he)適配(pei)器(qi)的成本。輸入部(bu)分包括一個浪涌電流限制和(he)(he)故障保護，arectifier橋，兩條電解電容(rong)和(he)(he)大量作為前電感(gan)熔(rong)斷電阻器(qi)高(gao)端AC - DC轉換器(qi)和(he)(he)EMC濾波器(qi)。

    變(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)是一個層類型(xing)，利用一個標準的(de)(de)(de)(de)EF12.6鐵氧體磁芯，并與大(da)約75 V電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)設計(ji)的(de)(de)(de)(de)反映。這個特點是變(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)繞組(zu)的(de)(de)(de)(de)技(ji)術，消除了常用的(de)(de)(de)(de)?1安(an)全電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)器(qi)(qi)的(de)(de)(de)(de)需要之間的(de)(de)(de)(de)主要和次要方(fang)面。一個RCD鉗位網絡用于漏(lou)感消磁。該電(dian)(dian)(dian)(dian)(dian)(dian)路的(de)(de)(de)(de)啟動是由內部(bu)管理(li)(li)，高(gao)壓(ya)(ya)(ya)(ya)的(de)(de)(de)(de)VIPER17HN啟動發(fa)電(dian)(dian)(dian)(dian)(dian)(dian)機。這條(tiao)賽(sai)道的(de)(de)(de)(de)典型(xing)匯3電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)從(cong)漏(lou)極(ji)引腳和收費(fei)內徑電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)。這個電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)值(zhi)減少到0.6毫安(an)在(zai)有保障的(de)(de)(de)(de)干預(yu)，以提高(gao)試用期(qi)重新啟動，從(cong)而減少對(dui)永(yong)久性故(gu)障的(de)(de)(de)(de)情(qing)況下，功率器(qi)(qi)件的(de)(de)(de)(de)壓(ya)(ya)(ya)(ya)力。為VIPER17HN電(dian)(dian)(dian)(dian)(dian)(dian)源獲得自我(wo)供應(ying)從(cong)一激配置(zhi)連接的(de)(de)(de)(de)變(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)繞組(zu)。該電(dian)(dian)(dian)(dian)(dian)(dian)路提供電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)，理(li)(li)想情(qing)況下，直(zhi)接成(cheng)比例(li)的(de)(de)(de)(de)輸出電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)。在(zai)實踐(jian)中，因為這是沒(mei)有Y型(xing)帽變(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)有很高(gao)的(de)(de)(de)(de)漏(lou)感，作(zuo)為峰值(zhi)初級電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)增(zeng)大(da)selfsupply電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)的(de)(de)(de)(de)增(zeng)加(jia)。無論如何，由于廣泛內徑的(de)(de)(de)(de)VIPER17HN電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)范圍的(de)(de)(de)(de)情(qing)況（從(cong)8.5 V至(zhi)23五）正(zheng)確(que)的(de)(de)(de)(de)供應(ying)總是提供。內部(bu)MOSFET的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)限制降低（從(cong)0.4的(de)(de)(de)(de)面值(zhi)）通(tong)過(guo)使用電(dian)(dian)(dian)(dian)(dian)(dian)阻R16連接到續針。

     有了這個功(gong)能，IDlim定(ding)為(wei)280毫安(an)，允許(xu)使(shi)用(yong)(yong)(yong)小型(xing)(xing)變壓(ya)(ya)(ya)器(qi)(qi)5 W輸(shu)(shu)出(chu)（EF12.6使(shi)用(yong)(yong)(yong)）在(zai)(zai)(zai)不飽(bao)和(he)(he)的(de)(de)(de)風險(xian)。分壓(ya)(ya)(ya)器(qi)(qi)的(de)(de)(de)節(jie)電(dian)(dian)沒(mei)有安(an)裝（所(suo)(suo)以禁(jin)用(yong)(yong)(yong)此(ci)功(gong)能），以節(jie)省電(dian)(dian)能特別是(shi)空載(zai)(zai)功(gong)耗(hao)。該VIPER17HN有幾個內(nei)(nei)置的(de)(de)(de)功(gong)能，如(ru)抖動(dong)，以減少電(dian)(dian)磁干擾的(de)(de)(de)問(wen)題，軟啟動(dong)頻率，和(he)(he)突(tu)發的(de)(de)(de)低(di)功(gong)耗(hao)模式工作在(zai)(zai)(zai)輕負(fu)載(zai)(zai)和(he)(he)無負(fu)載(zai)(zai)條件下(xia)。過(guo)(guo)流，過(guo)(guo)載(zai)(zai)和(he)(he)過(guo)(guo)溫保(bao)(bao)護也(ye)是(shi)在(zai)(zai)(zai)內(nei)(nei)部實施，并保(bao)(bao)證董(dong)事會的(de)(de)(de)安(an)全運行(xing)。在(zai)(zai)(zai)中學方(fang)面，TSM1052恒(heng)壓(ya)(ya)(ya)恒(heng)電(dian)(dian)流（CV / CC）的(de)(de)(de)控制器(qi)(qi)使(shi)用(yong)(yong)(yong)。在(zai)(zai)(zai)TSM1052和(he)(he)光電(dian)(dian)二極管(guan)的(de)(de)(de)光電(dian)(dian)耦合(he)器(qi)(qi)是(shi)直接供應的(de)(de)(de)輸(shu)(shu)出(chu)電(dian)(dian)壓(ya)(ya)(ya)。其電(dian)(dian)源的(de)(de)(de)TSM1052（為(wei)1.7 V分鐘）電(dian)(dian)壓(ya)(ya)(ya)范圍內(nei)(nei)進行(xing)精確的(de)(de)(de)恒(heng)定(ding)電(dian)(dian)流調節(jie)，即使(shi)輸(shu)(shu)出(chu)電(dian)(dian)壓(ya)(ya)(ya)降至(zhi)1.5伏特，1.6五，此(ci)范圍通常為(wei)所(suo)(suo)有電(dian)(dian)池充電(dian)(dian)器(qi)(qi)應用(yong)(yong)(yong)不夠。當(dang)輸(shu)(shu)出(chu)電(dian)(dian)壓(ya)(ya)(ya)低(di)于這一限制電(dian)(dian)路(lu)的(de)(de)(de)監管(guan)，屬(shu)于損失，保(bao)(bao)護了口腔扁平(ping)(ping)苔蘚調用(yong)(yong)(yong)和(he)(he)系統始于呃逆(ni)模式下(xia)工作。如(ru)果由于某種(zhong)原因，目(mu)前(qian)監管(guan)的(de)(de)(de)需要到零輸(shu)(shu)出(chu)電(dian)(dian)壓(ya)(ya)(ya)水平(ping)(ping)（即短(duan)路(lu)），它(ta)是(shi)足(zu)夠提供TSM1052和(he)(he)帶有電(dian)(dian)壓(ya)(ya)(ya)等于輸(shu)(shu)出(chu)電(dian)(dian)壓(ya)(ya)(ya)的(de)(de)(de)總和(he)(he)，從TR1C電(dian)(dian)壓(ya)(ya)(ya)二極管(guan)纏(chan)繞在(zai)(zai)(zai)前(qian)進的(de)(de)(de)方(fang)式糾正。有關(guan)這一具體原理圖，請使(shi)用(yong)(yong)(yong)TSM1052見應用(yong)(yong)(yong)筆記AN2448（超小型(xing)(xing)電(dian)(dian)池充電(dian)(dian)器(qi)(qi)更多信息）。

     R7的(de)(de)(de)(de)電阻(zu)器(qi)被添加(jia)到(dao)提供電纜(lan)壓降(jiang)補償。較(jiao)高的(de)(de)(de)(de)輸(shu)出電流(liu)，輸(shu)出電壓越高，對(dui)電路板的(de)(de)(de)(de)輸(shu)出端測(ce)量。這(zhe)樣(yang)(yang)，對(dui)電纜(lan)連(lian)接的(de)(de)(de)(de)單位負載電壓降(jiang)得(de)到(dao)補償，同(tong)時提供給負載的(de)(de)(de)(de)電壓基本不變。更多的(de)(de)(de)(de)細節，因(yin)為(wei)(wei)(wei)r7同(tong)樣(yang)(yang)等于九號(hao)，輸(shu)出電壓為(wei)(wei)(wei)增加(jia)0.2毫(hao)安的(de)(de)(de)(de)輸(shu)出電流(liu)壓。這(zhe)一數額(e)的(de)(de)(de)(de)基礎(chu)上選(xuan)擇為(wei)(wei)(wei)這(zhe)些(xie)應用程序（通常約為(wei)(wei)(wei)0.2-0.3Ω）典型的(de)(de)(de)(de)電纜(lan)電阻(zu)。