利盈娱乐(中国)创新平台有限公司

mos管是金属(metal)—氧化物(oxid)—半导体(semiconductor)场效应晶体管，或者称是金属—绝缘体(insulator)—半导体。MOS管的source和drain是能够对调的，他们都是在P型backgate中构成的N型区。在多数状况下，这个两个区是一样的，即便两端对调也不会影响器件的性能。这样的器件被以为是对称的。三极管，是一种电流控制电流的半导体器件-其作用是把微小信号放大成幅度值较大的电信号，也用作无触点开关。晶体三极管，是半导体根本元器件之(zhi)一，具有(you)电(dian)放(fang)逐大作用，是电(dian)子(zi)电(dian)路的中(zhong)心元件。三(san)极管是在(zai)一块半导体(ti)基片(pian)上制造(zao)两(liang)个(ge)相距很近(jin)的PN结，两(liang)个(ge)PN结把整(zheng)块半导体(ti)分(fen)红三(san)局(ju)部(bu)(bu)，中(zhong)间局(ju)部(bu)(bu)是基区，两(liang)侧局(ju)部(bu)(bu)是发射区和集电(dian)区，排列(lie)方式有(you)PNP和NPN两(liang)种。

工作性质：三极管用电(dian)流控制，MOS管属(shu)于(yu)电(dian)压控制.

功耗问题：三极管(guan)损耗大(da)。

驱动才能：mos管常用来电源开关，以及大(da)电流中央开关电路。

MOS管用(yong)(yong)(yong)于(yu)高频高速电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路，大(da)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)场(chang)(chang)所(suo)，以(yi)及对基(ji)(ji)极(ji)(ji)或漏极(ji)(ji)控制电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)比拟敏感(gan)的(de)(de)(de)(de)(de)(de)中央。普(pu)通来说低本钱场(chang)(chang)所(suo)，普(pu)通应(ying)(ying)(ying)用(yong)(yong)(yong)的(de)(de)(de)(de)(de)(de)先思(si)索用(yong)(yong)(yong)三极(ji)(ji)管(guan)(guan)，不行的(de)(de)(de)(de)(de)(de)话思(si)索MOS管(guan)(guan)实(shi)践上说电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)控制慢，电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)控制快这(zhei)种了(le)解(jie)是(shi)(shi)不对的(de)(de)(de)(de)(de)(de)。要真正(zheng)(zheng)了(le)解(jie)得理(li)解(jie)双极(ji)(ji)晶(jing)体(ti)管(guan)(guan)和mos晶(jing)体(ti)管(guan)(guan)的(de)(de)(de)(de)(de)(de)工(gong)(gong)作(zuo)(zuo)方(fang)式才(cai)干(gan)明白(bai)。三极(ji)(ji)管(guan)(guan)是(shi)(shi)靠(kao)载流(liu)子(zi)(zi)的(de)(de)(de)(de)(de)(de)运(yun)(yun)动(dong)(dong)(dong)(dong)来工(gong)(gong)作(zuo)(zuo)的(de)(de)(de)(de)(de)(de)，以(yi)npn管(guan)(guan)射(she)极(ji)(ji)跟随器为(wei)(wei)(wei)(wei)例(li)，当基(ji)(ji)极(ji)(ji)加(jia)不加(jia)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)时(shi)(shi)，基(ji)(ji)区(qu)(qu)(qu)和发(fa)(fa)(fa)(fa)射(she)区(qu)(qu)(qu)组成(cheng)的(de)(de)(de)(de)(de)(de)pn结(jie)(jie)为(wei)(wei)(wei)(wei)阻(zu)止多子(zi)(zi)（基(ji)(ji)区(qu)(qu)(qu)为(wei)(wei)(wei)(wei)空穴，发(fa)(fa)(fa)(fa)射(she)区(qu)(qu)(qu)为(wei)(wei)(wei)(wei)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)）的(de)(de)(de)(de)(de)(de)扩散(san)运(yun)(yun)动(dong)(dong)(dong)(dong)，在(zai)(zai)此(ci)(ci)pn结(jie)(jie)处(chu)(chu)会感(gan)应(ying)(ying)(ying)出(chu)由发(fa)(fa)(fa)(fa)射(she)区(qu)(qu)(qu)指向(xiang)(xiang)基(ji)(ji)区(qu)(qu)(qu)的(de)(de)(de)(de)(de)(de)静电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)场(chang)(chang)（即(ji)内建电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)场(chang)(chang)），当基(ji)(ji)极(ji)(ji)外(wai)加(jia)正(zheng)(zheng)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)的(de)(de)(de)(de)(de)(de)指向(xiang)(xiang)为(wei)(wei)(wei)(wei)基(ji)(ji)区(qu)(qu)(qu)指向(xiang)(xiang)发(fa)(fa)(fa)(fa)射(she)区(qu)(qu)(qu)，当基(ji)(ji)极(ji)(ji)外(wai)加(jia)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)产(chan)生的(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)场(chang)(chang)大(da)于(yu)内建电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)场(chang)(chang)时(shi)(shi)，基(ji)(ji)区(qu)(qu)(qu)的(de)(de)(de)(de)(de)(de)载流(liu)子(zi)(zi)（电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)）才(cai)有(you)可(ke)能从基(ji)(ji)区(qu)(qu)(qu)流(liu)向(xiang)(xiang)发(fa)(fa)(fa)(fa)射(she)区(qu)(qu)(qu)，此(ci)(ci)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)的(de)(de)(de)(de)(de)(de)最小值即(ji)pn结(jie)(jie)的(de)(de)(de)(de)(de)(de)正(zheng)(zheng)导(dao)游(you)通电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)（工(gong)(gong)程(cheng)(cheng)上普(pu)通以(yi)为(wei)(wei)(wei)(wei)0.7v）。但此(ci)(ci)时(shi)(shi)每个(ge)(ge)(ge)pn结(jie)(jie)的(de)(de)(de)(de)(de)(de)两(liang)侧都会有(you)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷存在(zai)(zai)，此(ci)(ci)时(shi)(shi)假如集(ji)(ji)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)极(ji)(ji)-发(fa)(fa)(fa)(fa)射(she)极(ji)(ji)加(jia)正(zheng)(zheng)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)，在(zai)(zai)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)场(chang)(chang)作(zuo)(zuo)用(yong)(yong)(yong)下，发(fa)(fa)(fa)(fa)射(she)区(qu)(qu)(qu)的(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)往基(ji)(ji)区(qu)(qu)(qu)运(yun)(yun)动(dong)(dong)(dong)(dong)（实(shi)践上都是(shi)(shi)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)的(de)(de)(de)(de)(de)(de)反方(fang)向(xiang)(xiang)运(yun)(yun)动(dong)(dong)(dong)(dong)），由于(yu)基(ji)(ji)区(qu)(qu)(qu)宽度(du)很小，电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)很容易越过(guo)基(ji)(ji)区(qu)(qu)(qu)抵(di)达集(ji)(ji)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)区(qu)(qu)(qu)，并与此(ci)(ci)处(chu)(chu)的(de)(de)(de)(de)(de)(de)PN的(de)(de)(de)(de)(de)(de)空穴复(fu)合（靠(kao)近集(ji)(ji)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)极(ji)(ji)），为(wei)(wei)(wei)(wei)维(wei)持均(jun)衡(heng)，在(zai)(zai)正(zheng)(zheng)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)场(chang)(chang)的(de)(de)(de)(de)(de)(de)作(zuo)(zuo)用(yong)(yong)(yong)下集(ji)(ji)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)区(qu)(qu)(qu)的(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)加(jia)速外(wai)集(ji)(ji)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)极(ji)(ji)运(yun)(yun)动(dong)(dong)(dong)(dong)，而空穴则为(wei)(wei)(wei)(wei)pn结(jie)(jie)处(chu)(chu)运(yun)(yun)动(dong)(dong)(dong)(dong)，此(ci)(ci)过(guo)程(cheng)(cheng)相似一个(ge)(ge)(ge)雪崩过(guo)程(cheng)(cheng)。集(ji)(ji)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)极(ji)(ji)的(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)经过(guo)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源回到(dao)发(fa)(fa)(fa)(fa)射(she)极(ji)(ji)，这(zhei)就是(shi)(shi)晶(jing)体(ti)管(guan)(guan)的(de)(de)(de)(de)(de)(de)工(gong)(gong)作(zuo)(zuo)原理(li)。三极(ji)(ji)管(guan)(guan)工(gong)(gong)作(zuo)(zuo)时(shi)(shi)，两(liang)个(ge)(ge)(ge)pn结(jie)(jie)都会感(gan)应(ying)(ying)(ying)出(chu)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷，当做(zuo)开关管(guan)(guan)处(chu)(chu)于(yu)导(dao)通状态时(shi)(shi)，三极(ji)(ji)管(guan)(guan)处(chu)(chu)于(yu)饱(bao)和状态，假如这(zhei)时(shi)(shi)三极(ji)(ji)管(guan)(guan)截(jie)至，pn结(jie)(jie)感(gan)应(ying)(ying)(ying)的(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷要恢复(fu)到(dao)均(jun)衡(heng)状态，这(zhei)个(ge)(ge)(ge)过(guo)程(cheng)(cheng)需求(qiu)时(shi)(shi)间。而mos三极(ji)(ji)管(guan)(guan)工(gong)(gong)作(zuo)(zuo)方(fang)式不同，没(mei)有(you)这(zhei)个(ge)(ge)(ge)恢复(fu)时(shi)(shi)间，因而能够(gou)用(yong)(yong)(yong)作(zuo)(zuo)高速开关管(guan)(guan)。

联系(xi)方式：邹先生

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