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。充電器的輸(shu)入(ru)電(dian)壓為90 - 264Vac，頻率45 - 66Hz，輸(shu)出電(dian)壓5.1伏(fu)直流(liu)(liu)± 2％，輸(shu)出電(dian)流(liu)(liu)1 ± 5％，電(dian)纜(lan)壓降補償（0.2V的/甲），無負載在高火線(xian)電(dian)壓的輸(shu)入(ru)功率低于100兆瓦，短(duan)路保護，并在短(duan)路故(gu)障(zhang)消除(chu)后自動重起，印刷(shua)電(dian)路板(ban)尺(chi)寸為53 × 26毫米(mi)，安全(quan)特性和EN60065兼容，電(dian)磁干(gan)擾滿足標(biao)準EN5022 - B類標(biao)準。

     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)(hui)的(de)(de)(de)(de)(de)目的(de)(de)(de)(de)(de)是證明該(gai)VIPER17HN離(li)線高電(dian)(dian)壓(ya)(ya)轉換器(qi)(qi)的(de)(de)(de)(de)(de)性(xing)能。其(qi)低(di)功耗和(he)(he)其(qi)他特性(xing)，由于(yu)良(liang)好的(de)(de)(de)(de)(de)電(dian)(dian)氣性(xing)能實現(xian)。為了(le)(le)獲得(de)恒定(ding)的(de)(de)(de)(de)(de)輸出電(dian)(dian)壓(ya)(ya)和(he)(he)電(dian)(dian)流(liu)(liu)調節（簡(jian)歷/消委(wei)會(hui)(hui)），TSM1052簡(jian)歷/消委(wei)會(hui)(hui)控制器(qi)(qi)上使用的(de)(de)(de)(de)(de)次要方(fang)(fang)面。這(zhe)TSM1052是非(fei)常適合這(zhe)種類型(xing)的(de)(de)(de)(de)(de)應用，提供了(le)(le)一(yi)個(ge)非(fei)常小的(de)(de)(de)(de)(de)封裝(zhuang)非(fei)常低(di)的(de)(de)(de)(de)(de)電(dian)(dian)流(liu)(liu)消耗（采用SOT23 - 6L）。該(gai)轉換器(qi)(qi)實現(xian)了(le)(le)一(yi)個(ge)反(fan)激拓撲(pu)結構，這(zhe)是理想的(de)(de)(de)(de)(de)低(di)功耗，低(di)成本的(de)(de)(de)(de)(de)隔離(li)轉換器(qi)(qi)。在(zai)小學方(fang)(fang)面，VIPER17HN使用。該(gai)IC是毒(du)蛇(she)的(de)(de)(de)(de)(de)+家族，從(cong)它的(de)(de)(de)(de)(de)附加(jia)功能和(he)(he)保護的(de)(de)(de)(de)(de)利(li)益。此設備(bei)，設計(ji)采用了(le)(le)一(yi)個(ge)多芯(xin)片方(fang)(fang)案，包括一(yi)個(ge)先進(jin)的(de)(de)(de)(de)(de)電(dian)(dian)流(liu)(liu)模式PWM控制器(qi)(qi)和(he)(he)雪崩的(de)(de)(de)(de)(de)小幅下降，7封裝(zhuang)堅固800 V的(de)(de)(de)(de)(de)功率MOSFET。該(gai)轉換器(qi)(qi)在(zai)連續(xu)和(he)(he)非(fei)連續(xu)導電(dian)(dian)模式工程取決于(yu)輸入電(dian)(dian)壓(ya)(ya)（電(dian)(dian)路有(you)一(yi)個(ge)范圍廣闊的(de)(de)(de)(de)(de)輸入）和(he)(he)輸出負載。

     該(gai)控制(zhi)器(qi)(qi)后綴為“H”規定(ding)，開關頻率是115千赫，內部(bu)固定(ding)的，允許的功(gong)率元件減少。應用程序(xu)設計，以降低整體元件數量和(he)適配器(qi)(qi)的成本(ben)。輸入部(bu)分包括一(yi)個浪涌電流限制(zhi)和(he)故障保(bao)護，arectifier橋，兩條電解電容和(he)大量作為前電感熔斷電阻器(qi)(qi)高端AC - DC轉換器(qi)(qi)和(he)EMC濾(lv)波器(qi)(qi)。

    變(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)是(shi)(shi)一個(ge)層類型(xing)，利用(yong)(yong)一個(ge)標準的(de)(de)(de)(de)(de)(de)EF12.6鐵氧體(ti)磁芯，并與大約75 V電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)設(she)計的(de)(de)(de)(de)(de)(de)反映。這個(ge)特點是(shi)(shi)變(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)繞組的(de)(de)(de)(de)(de)(de)技術，消除(chu)了常(chang)用(yong)(yong)的(de)(de)(de)(de)(de)(de)?1安全電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容器(qi)(qi)(qi)的(de)(de)(de)(de)(de)(de)需要之間(jian)的(de)(de)(de)(de)(de)(de)主要和次要方面(mian)(mian)。一個(ge)RCD鉗位網絡用(yong)(yong)于漏感消磁。該電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路的(de)(de)(de)(de)(de)(de)啟(qi)動(dong)是(shi)(shi)由內部管理，高壓(ya)(ya)(ya)的(de)(de)(de)(de)(de)(de)VIPER17HN啟(qi)動(dong)發電(dian)(dian)(dian)(dian)(dian)(dian)(dian)機。這條賽(sai)道的(de)(de)(de)(de)(de)(de)典(dian)型(xing)匯3電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)從(cong)漏極引腳和收費內徑(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容。這個(ge)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)值減(jian)(jian)少到0.6毫安在(zai)有保障(zhang)的(de)(de)(de)(de)(de)(de)干預，以(yi)提(ti)高試(shi)用(yong)(yong)期重(zhong)新(xin)啟(qi)動(dong)，從(cong)而減(jian)(jian)少對永久性(xing)故障(zhang)的(de)(de)(de)(de)(de)(de)情況下(xia)，功率器(qi)(qi)(qi)件(jian)的(de)(de)(de)(de)(de)(de)壓(ya)(ya)(ya)力(li)。為VIPER17HN電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源獲得自我供應(ying)(ying)從(cong)一激配置連(lian)接的(de)(de)(de)(de)(de)(de)變(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)繞組。該電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路提(ti)供電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)，理想(xiang)情況下(xia)，直接成比例的(de)(de)(de)(de)(de)(de)輸(shu)出電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)。在(zai)實踐中，因為這是(shi)(shi)沒有Y型(xing)帽變(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)有很高的(de)(de)(de)(de)(de)(de)漏感，作為峰值初(chu)級電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)增大selfsupply電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)的(de)(de)(de)(de)(de)(de)增加(jia)。無論如何，由于廣泛內徑(jing)的(de)(de)(de)(de)(de)(de)VIPER17HN電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)范圍(wei)的(de)(de)(de)(de)(de)(de)情況（從(cong)8.5 V至(zhi)23五）正確的(de)(de)(de)(de)(de)(de)供應(ying)(ying)總(zong)是(shi)(shi)提(ti)供。內部MOSFET的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)限(xian)制降低（從(cong)0.4的(de)(de)(de)(de)(de)(de)面(mian)(mian)值）通過(guo)使用(yong)(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻R16連(lian)接到續針。

     有(you)了這(zhe)(zhe)個功(gong)(gong)(gong)能，IDlim定為280毫安，允許(xu)使用(yong)小型變壓(ya)器(qi)(qi)5 W輸出(chu)(chu)(chu)（EF12.6使用(yong)）在(zai)不飽和的(de)(de)(de)(de)(de)風險。分(fen)壓(ya)器(qi)(qi)的(de)(de)(de)(de)(de)節電(dian)(dian)(dian)(dian)沒(mei)有(you)安裝(zhuang)（所(suo)以(yi)(yi)禁用(yong)此功(gong)(gong)(gong)能），以(yi)(yi)節省電(dian)(dian)(dian)(dian)能特(te)別(bie)是(shi)(shi)空載功(gong)(gong)(gong)耗(hao)。該VIPER17HN有(you)幾(ji)個內置的(de)(de)(de)(de)(de)功(gong)(gong)(gong)能，如抖動(dong)，以(yi)(yi)減少電(dian)(dian)(dian)(dian)磁干擾的(de)(de)(de)(de)(de)問題(ti)，軟(ruan)啟動(dong)頻率，和突(tu)發的(de)(de)(de)(de)(de)低功(gong)(gong)(gong)耗(hao)模式工(gong)作在(zai)輕負載和無負載條件下。過流，過載和過溫保(bao)護(hu)也(ye)是(shi)(shi)在(zai)內部實(shi)施，并保(bao)證董事(shi)會的(de)(de)(de)(de)(de)安全運(yun)行。在(zai)中學方面(mian)，TSM1052恒(heng)壓(ya)恒(heng)電(dian)(dian)(dian)(dian)流（CV / CC）的(de)(de)(de)(de)(de)控制(zhi)器(qi)(qi)使用(yong)。在(zai)TSM1052和光電(dian)(dian)(dian)(dian)二(er)極管(guan)(guan)(guan)的(de)(de)(de)(de)(de)光電(dian)(dian)(dian)(dian)耦(ou)合器(qi)(qi)是(shi)(shi)直接供(gong)(gong)應(ying)的(de)(de)(de)(de)(de)輸出(chu)(chu)(chu)電(dian)(dian)(dian)(dian)壓(ya)。其電(dian)(dian)(dian)(dian)源的(de)(de)(de)(de)(de)TSM1052（為1.7 V分(fen)鐘）電(dian)(dian)(dian)(dian)壓(ya)范圍內進行精確(que)的(de)(de)(de)(de)(de)恒(heng)定電(dian)(dian)(dian)(dian)流調節，即使輸出(chu)(chu)(chu)電(dian)(dian)(dian)(dian)壓(ya)降(jiang)至1.5伏特(te)，1.6五，此范圍通(tong)常為所(suo)有(you)電(dian)(dian)(dian)(dian)池充電(dian)(dian)(dian)(dian)器(qi)(qi)應(ying)用(yong)不夠(gou)。當(dang)輸出(chu)(chu)(chu)電(dian)(dian)(dian)(dian)壓(ya)低于(yu)這(zhe)(zhe)一限制(zhi)電(dian)(dian)(dian)(dian)路的(de)(de)(de)(de)(de)監管(guan)(guan)(guan)，屬于(yu)損失，保(bao)護(hu)了口腔扁(bian)平(ping)苔蘚調用(yong)和系統始于(yu)呃(e)逆模式下工(gong)作。如果(guo)由(you)于(yu)某種原因，目(mu)前監管(guan)(guan)(guan)的(de)(de)(de)(de)(de)需要到(dao)零(ling)輸出(chu)(chu)(chu)電(dian)(dian)(dian)(dian)壓(ya)水平(ping)（即短路），它是(shi)(shi)足夠(gou)提供(gong)(gong)TSM1052和帶有(you)電(dian)(dian)(dian)(dian)壓(ya)等于(yu)輸出(chu)(chu)(chu)電(dian)(dian)(dian)(dian)壓(ya)的(de)(de)(de)(de)(de)總和，從TR1C電(dian)(dian)(dian)(dian)壓(ya)二(er)極管(guan)(guan)(guan)纏繞在(zai)前進的(de)(de)(de)(de)(de)方式糾正。有(you)關這(zhe)(zhe)一具(ju)體(ti)原理(li)圖，請使用(yong)TSM1052見應(ying)用(yong)筆記AN2448（超小型電(dian)(dian)(dian)(dian)池充電(dian)(dian)(dian)(dian)器(qi)(qi)更多信息）。

     R7的(de)(de)電(dian)阻器被(bei)添(tian)加(jia)到提供電(dian)纜(lan)壓(ya)降補償。較(jiao)高的(de)(de)輸(shu)(shu)出(chu)電(dian)流(liu)，輸(shu)(shu)出(chu)電(dian)壓(ya)越高，對(dui)電(dian)路板的(de)(de)輸(shu)(shu)出(chu)端測量。這樣，對(dui)電(dian)纜(lan)連接的(de)(de)單位(wei)負(fu)載電(dian)壓(ya)降得到補償，同(tong)時提供給負(fu)載的(de)(de)電(dian)壓(ya)基(ji)本(ben)不變(bian)。更(geng)多(duo)的(de)(de)細節，因(yin)為r7同(tong)樣等(deng)于九號，輸(shu)(shu)出(chu)電(dian)壓(ya)為增加(jia)0.2毫安的(de)(de)輸(shu)(shu)出(chu)電(dian)流(liu)壓(ya)。這一數額的(de)(de)基(ji)礎上選(xuan)擇為這些應用程(cheng)序（通常約為0.2-0.3Ω）典型的(de)(de)電(dian)纜(lan)電(dian)阻。