智能家具(ju)(ju)产品中的(de)电(dian)(dian)(dian)(dian)源(yuan)开关慢(man)(man)慢(man)(man)地应(ying)(ying)用(yong)(yong)上(shang)acdc电(dian)(dian)(dian)(dian)源(yuan)模(mo)(mo)(mo)块(kuai)，以(yi)微小功(gong)率、隔离(li)稳压(ya)单路(lu)输(shu)出的(de)acdc电(dian)(dian)(dian)(dian)源(yuan)模(mo)(mo)(mo)块(kuai)对(dui)电(dian)(dian)(dian)(dian)源(yuan)及电(dian)(dian)(dian)(dian)流的(de)传(chuan)输(shu)效率高达(da)80%，其强(qiang)稳定(ding)性和安全性更获(huo)智能家具(ju)(ju)厂商(shang)们认可。电(dian)(dian)(dian)(dian)源(yuan)模(mo)(mo)(mo)块(kuai)是(shi)可以(yi)直接(jie)贴装在印刷电(dian)(dian)(dian)(dian)路(lu)板上(shang)的(de)电(dian)(dian)(dian)(dian)源(yuan)供(gong)应(ying)(ying)器，其特点是(shi)可为专门用(yong)(yong)集成(cheng)电(dian)(dian)(dian)(dian)路(lu)（ASIC）、数字(zi)信(xin)号处理器（DSP）、微处理器、存储器、现场可编(bian)程(cheng)门阵(zhen)列（FPGA）及其他数字(zi)或模(mo)(mo)(mo)拟负(fu)载(zai)提供(gong)供(gong)电(dian)(dian)(dian)(dian)。一(yi)般来说，这类(lei)模(mo)(mo)(mo)块(kuai)称(cheng)为负(fu)载(zai)点（POL）电(dian)(dian)(dian)(dian)源(yuan)供(gong)应(ying)(ying)系(xi)统或使用(yong)(yong)点电(dian)(dian)(dian)(dian)源(yuan)供(gong)应(ying)(ying)系(xi)统（PUPS）。由(you)于模(mo)(mo)(mo)块(kuai)式结构的(de)优点甚(shen)多，因此模(mo)(mo)(mo)块(kuai)电(dian)(dian)(dian)(dian)源(yuan)普遍用(yong)(yong)于交换设备、接(jie)入设备、移动(dong)通讯、微波通讯以(yi)及光传(chuan)输(shu)、路(lu)由(you)器等通信(xin)领域(yu)和汽(qi)车电(dian)(dian)(dian)(dian)子、航(hang)空(kong)航(hang)天等。模(mo)(mo)(mo)块(kuai)电(dian)(dian)(dian)(dian)源(yuan)容值以(yi)模(mo)(mo)(mo)块(kuai)功(gong)率传(chuan)感(gan)器为特征。虹口区ACDC电(dian)(dian)(dian)(dian)源(yuan)模(mo)(mo)(mo)块(kuai)种(zhong)类(lei)

电(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)模(mo)(mo)块(kuai)(kuai)是一种可(ke)以直接安装在印刷电(dian)(dian)(dian)(dian)(dian)(dian)路板上的(de)电(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)，可(ke)用(yong)(yong)于数字或模(mo)(mo)拟负载的(de)电(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)应(ying)用(yong)(yong)。由于其(qi)高(gao)可(ke)靠(kao)性(xing)、小(xiao)(xiao)尺寸、高(gao)功率密(mi)度以及(ji)高(gao)转换效(xiao)率使电(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)系(xi)统设(she)计(ji)变得(de)(de)越(yue)来越(yue)简单从(cong)而被普遍使用(yong)(yong)。如(ru)何设(she)计(ji)防(fang)浪(lang)涌保护(hu)(hu)电(dian)(dian)(dian)(dian)(dian)(dian)路，针(zhen)对(dui)不同的(de)应(ying)用(yong)(yong)，或许可(ke)以调整电(dian)(dian)(dian)(dian)(dian)(dian)感器(qi)、TVS管的(de)位(wei)置，这可(ke)以使系(xi)统更好地应(ying)用(yong)(yong)和正(zheng)确(que)(que)应(ying)用(yong)(yong)电(dian)(dian)(dian)(dian)(dian)(dian)路，从(cong)而更好地提高(gao)EMC性(xing)能。注意两(liang)级防(fang)浪(lang)涌保护(hu)(hu)电(dian)(dian)(dian)(dian)(dian)(dian)路的(de)设(she)计(ji)，如(ru)果(guo)使用(yong)(yong)不当，会适(shi)得(de)(de)其(qi)反。电(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)模(mo)(mo)块(kuai)(kuai)与电(dian)(dian)(dian)(dian)(dian)(dian)子设(she)备(bei)的(de)一样，电(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)模(mo)(mo)块(kuai)(kuai)对(dui)产(chan)品质量至关重(zhong)(zhong)要(yao)(yao)。因此，在选择电(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)模(mo)(mo)块(kuai)(kuai)时(shi)，其(qi)性(xing)能尤(you)为重(zhong)(zhong)要(yao)(yao)！电(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)模(mo)(mo)块(kuai)(kuai)性(xing)能无非是安全性(xing)、稳定性(xing)、转换效(xiao)率等(deng)重(zhong)(zhong)要(yao)(yao)参数，可(ke)以查(cha)看输(shu)入(ru)、输(shu)出(chu)、纹波、细分、温度等(deng)指标(biao)来确(que)(que)定。松(song)江区ACDC电(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)模(mo)(mo)块(kuai)(kuai)厂acdc电(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)模(mo)(mo)块(kuai)(kuai)可(ke)以减小(xiao)(xiao)各元(yuan)器(qi)件及(ji)布线(xian)之(zhi)间(jian)的(de)距离。

DC-DC转(zhuan)换(huan)常称作二极(ji)管整(zheng)流式(shi)和异步(bu)式(shi)等。和上篇提到的(de)(de)(de)(de)正(zheng)(zheng)激体(ti)(ti)(ti)例(li)(li)相(xiang)比，因(yin)(yin)为(wei)未使用(yong)(yong)变(bian)压(ya)器(qi)(qi)，一次(ci)侧和二次(ci)侧并未绝(jue)缘。不需绝(jue)缘时，以不使用(yong)(yong)变(bian)压(ya)器(qi)(qi)的(de)(de)(de)(de)该体(ti)(ti)(ti)例(li)(li)较为(wei)简单。Buck体(ti)(ti)(ti)例(li)(li)不必(bi)(bi)设(she)定变(bian)压(ya)器(qi)(qi)调整(zheng)电(dian)(dian)压(ya)，只(zhi)要行使MOSFET控(kong)制(zhi)，就可以决定输(shu)出电(dian)(dian)压(ya)。因(yin)(yin)此(ci)百(bai)度搜索排行，未必(bi)(bi)会必(bi)(bi)要来(lai)自于(yu)二次(ci)侧的(de)(de)(de)(de)反馈。Buck体(ti)(ti)(ti)例(li)(li)的(de)(de)(de)(de)特(te)性是(shi)电(dian)(dian)路构(gou)造简单，组成(cheng)小功(gong)率电(dian)(dian)源(yuan)模块电(dian)(dian)路时，成(cheng)本比反激式(shi)更有竞争(zheng)力(li)。因(yin)(yin)此(ci)，常使用(yong)(yong)在(zai)家电(dian)(dian)产品的(de)(de)(de)(de)微(wei)控(kong)制(zhi)器(qi)(qi)用(yong)(yong)电(dian)(dian)源(yuan)上。但是(shi)因(yin)(yin)为(wei)不必(bi)(bi)通过(guo)变(bian)压(ya)器(qi)(qi)，流向(xiang)开关元(yuan)件的(de)(de)(de)(de)电(dian)(dian)流比采(cai)用(yong)(yong)反激体(ti)(ti)(ti)例(li)(li)的(de)(de)(de)(de)划一输(shu)出功(gong)率还大，只(zhi)适(shi)用(yong)(yong)于(yu)小功(gong)率输(shu)出百(bai)度网(wang)站排名(ming)，而(er)无法用(yong)(yong)于(yu)大功(gong)率输(shu)出上。模式(shi)几乎和正(zheng)(zheng)激体(ti)(ti)(ti)例(li)(li)雷同，只(zhi)是(shi)去掉正(zheng)(zheng)激体(ti)(ti)(ti)例(li)(li)的(de)(de)(de)(de)变(bian)压(ya)器(qi)(qi)，将D1换(huan)成(cheng)MOSFET。MOSFET为(wei)ON时，电(dian)(dian)流经过(guo)电(dian)(dian)感流向(xiang)负载(zai)端，同时电(dian)(dian)感也积蓄电(dian)(dian)能。此(ci)时，二极(ji)管为(wei)OFF。MOSFET为(wei)OFF时，积蓄在(zai)电(dian)(dian)感的(de)(de)(de)(de)电(dian)(dian)能经由二极(ji)管D2供(gong)应至(zhi)负载(zai)端。和正(zheng)(zheng)激转(zhuan)换(huan)器(qi)(qi)的(de)(de)(de)(de)D1雷同，开启或关闭MOSFET。

绿色(se)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)模块：高速(su)发展(zhan)的(de)计(ji)(ji)算(suan)(suan)机(ji)(ji)技(ji)术带领(ling)人类进入了信(xin)息社会,同时(shi)也促进了电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)模块技(ji)术的(de)迅速(su)发展(zhan)。八十(shi)年代,计(ji)(ji)算(suan)(suan)机(ji)(ji)多方位采用了开(kai)(kai)(kai)关(guan)(guan)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan),率先完成计(ji)(ji)算(suan)(suan)机(ji)(ji)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)换代。接(jie)着开(kai)(kai)(kai)关(guan)(guan)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)技(ji)术相(xiang)继进入了电(dian)(dian)(dian)(dian)(dian)(dian)(dian)子、电(dian)(dian)(dian)(dian)(dian)(dian)(dian)器设(she)备领(ling)域。计(ji)(ji)算(suan)(suan)机(ji)(ji)技(ji)术的(de)发展(zhan),提出绿色(se)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)脑和绿色(se)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)模块。绿色(se)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)脑泛指对环境无害的(de)个人电(dian)(dian)(dian)(dian)(dian)(dian)(dian)脑和相(xiang)关(guan)(guan)产品，绿色(se)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)系指与绿色(se)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)脑相(xiang)关(guan)(guan)的(de)高效(xiao)省电(dian)(dian)(dian)(dian)(dian)(dian)(dian)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan),根据美国环境保护署l992年6月17日“能源(yuan)(yuan)(yuan)之星"计(ji)(ji)划(hua)规(gui)定,桌上型个人电(dian)(dian)(dian)(dian)(dian)(dian)(dian)脑或(huo)相(xiang)关(guan)(guan)的(de)外部设(she)备,在睡眠(mian)状态下的(de)耗(hao)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)量(liang)若小于30瓦,就(jiu)(jiu)符合绿色(se)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)脑的(de)要(yao)求(qiu),提高电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)效(xiao)率是降低(di)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)消(xiao)耗(hao)的(de)根本途径。就(jiu)(jiu)目前效(xiao)率为75%的(de)200瓦开(kai)(kai)(kai)关(guan)(guan)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)而言,电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)自身(shen)要(yao)消(xiao)耗(hao)50瓦的(de)能源(yuan)(yuan)(yuan)ac dc电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)模块一般是为客户(hu)提供一款较小体积模块式开(kai)(kai)(kai)关(guan)(guan)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)。

电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)特征的(de)(de)(de)重(zhong)要(yao)物理量有两个(ge)(ge)：一(yi)个(ge)(ge)是(shi)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)动(dong)势E，另一(yi)个(ge)(ge)是(shi)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)的(de)(de)(de)内电(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)（简称内阻(zu)）r0。直(zhi)(zhi)流电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)的(de)(de)(de)类(lei)(lei)(lei)型很多，不(bu)(bu)同(tong)类(lei)(lei)(lei)型的(de)(de)(de)直(zhi)(zhi)流电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)，非静(jing)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)力的(de)(de)(de)性(xing)质(zhi)不(bu)(bu)同(tong)，能(neng)(neng)量转换的(de)(de)(de)过程也(ye)不(bu)(bu)同(tong)。例如，在(zai)(zai)化(hua)学电(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)中，非静(jing)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)力来自与离(li)子的(de)(de)(de)溶解和沉积(ji)过程相(xiang)联系的(de)(de)(de)化(hua)学作用，化(hua)学电(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)放电(dian)(dian)(dian)(dian)(dian)(dian)(dian)时(shi)，化(hua)学能(neng)(neng)转化(hua)为电(dian)(dian)(dian)(dian)(dian)(dian)(dian)能(neng)(neng)和电(dian)(dian)(dian)(dian)(dian)(dian)(dian)路中的(de)(de)(de)内能(neng)(neng)。在(zai)(zai)直(zhi)(zhi)流发(fa)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)机(ji)中，非静(jing)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)力来自电(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)感应作用，直(zhi)(zhi)流发(fa)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)机(ji)供电(dian)(dian)(dian)(dian)(dian)(dian)(dian)时(shi)，机(ji)械能(neng)(neng)转化(hua)为电(dian)(dian)(dian)(dian)(dian)(dian)(dian)能(neng)(neng)和电(dian)(dian)(dian)(dian)(dian)(dian)(dian)路中的(de)(de)(de)内能(neng)(neng)。直(zhi)(zhi)流电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)的(de)(de)(de)分(fen)类(lei)(lei)(lei):直(zhi)(zhi)流稳(wen)(wen)定(ding)(ding)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)按习(xi)惯可(ke)分(fen)为化(hua)学电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan),线性(xing)稳(wen)(wen)定(ding)(ding)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)和开(kai)关型稳(wen)(wen)定(ding)(ding)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan),它们(men)又(you)分(fen)别具有各种不(bu)(bu)同(tong)类(lei)(lei)(lei)型：化(hua)学电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan):我们(men)平常所(suo)用的(de)(de)(de)干电(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)、铅酸蓄电(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)、镍镉、镍氢(qing)、锂离(li)子电(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)均属于这一(yi)类(lei)(lei)(lei),各有其优缺(que)点(dian)。随着科学技术的(de)(de)(de)发(fa)展,又(you)产生了智能(neng)(neng)化(hua)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi);在(zai)(zai)充(chong)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)材料方面,美国研(yan)制(zhi)人员发(fa)现锰的(de)(de)(de)一(yi)种碘化(hua)物,用它可(ke)以制(zhi)造出便(bian)宜(yi)、小巧、放电(dian)(dian)(dian)(dian)(dian)(dian)(dian)时(shi)间长,多次充(chong)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)后仍(reng)保持(chi)性(xing)能(neng)(neng)良好的(de)(de)(de)环保型充(chong)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)。ac dc电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)模块(kuai)一(yi)般输出功(gong)率为20W，具有极低的(de)(de)(de)空载损耗。黑(hei)龙江ACDC电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)模块(kuai)厂(chang)

接(jie)地(di)环路消除(chu)，远程信号传输\分布式电源供电系统(tong)。虹口区ACDC电源模块种类

在(zai)(zai)能量转(zhuan)换系统，必然(ran)是会产(chan)生损(sun)耗，所以在(zai)(zai)实际应(ying)用(yong)中，开(kai)(kai)关(guan)电(dian)源(yuan)模(mo)块(kuai)工作效率只能尽可能接近。因(yin)为取决于(yu)元件(jian)自身，所以只能通(tong)过(guo)元件(jian)技术来(lai)(lai)改进。下面(mian)分(fen)析下影响开(kai)(kai)关(guan)电(dian)源(yuan)模(mo)块(kuai)效率的(de)(de)主要因(yin)素有(you)(you)(you)(you)哪些。电(dian)源(yuan)模(mo)块(kuai)的(de)(de)损(sun)耗主要来(lai)(lai)自开(kai)(kai)关(guan)元件(jian)MOSFET和(he)(he)二极管(guan)，另一部分(fen)来(lai)(lai)自电(dian)容(rong)和(he)(he)电(dian)感(gan)。MOSFET和(he)(he)二极管(guan)由(you)于(yu)自身特性，会有(you)(you)(you)(you)效降(jiang)低系统效率，可分(fen)成(cheng)传导(dao)(dao)(dao)损(sun)耗和(he)(he)开(kai)(kai)关(guan)损(sun)耗俩部分(fen)。简单来(lai)(lai)说(shuo)，任何电(dian)流(liu)(liu)回(hui)路都存(cun)在(zai)(zai)损(sun)耗电(dian)阻，会造成(cheng)能量损(sun)耗。MOSFET和(he)(he)二极管(guan)是开(kai)(kai)关(guan)元件(jian)，在(zai)(zai)导(dao)(dao)(dao)通(tong)电(dian)流(liu)(liu)流(liu)(liu)过(guo)MOSFET或二极管(guan)时(shi)，会有(you)(you)(you)(you)导(dao)(dao)(dao)通(tong)压降(jiang)。由(you)于(yu)MOSFET只有(you)(you)(you)(you)在(zai)(zai)导(dao)(dao)(dao)通(tong)时(shi)才有(you)(you)(you)(you)电(dian)流(liu)(liu)流(liu)(liu)过(guo)，所以MOSFET的(de)(de)传导(dao)(dao)(dao)损(sun)耗与(yu)其导(dao)(dao)(dao)通(tong)电(dian)阻、占空比和(he)(he)导(dao)(dao)(dao)通(tong)时(shi)的(de)(de)电(dian)流(liu)(liu)有(you)(you)(you)(you)关(guan)。虹口区ACDC电(dian)源(yuan)模(mo)块(kuai)种(zhong)类(lei)

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