新宝GG-创意平台,注册畅享文化之梦!电子烟-电子烟专用MOS管型号及详解-KIA MOS管

电子烟-电子烟专用MOS管(guan)型号及详解-KIA MOS管(guan)

信息来源：本站　日期：2018-07-30　

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电子烟MOS管

电子(zi)烟(yan)(yan)(yan)(yan)(yan)(yan)又名虚拟香(xiang)(xiang)烟(yan)(yan)(yan)(yan)(yan)(yan)、电子(zi)香(xiang)(xiang)烟(yan)(yan)(yan)(yan)(yan)(yan)，主(zhu)要用(yong)于(yu)戒(jie)烟(yan)(yan)(yan)(yan)(yan)(yan)和(he)替代香(xiang)(xiang)烟(yan)(yan)(yan)(yan)(yan)(yan)。它有(you)着与香(xiang)(xiang)烟(yan)(yan)(yan)(yan)(yan)(yan)一样(yang)的(de)外(wai)观、与香(xiang)(xiang)烟(yan)(yan)(yan)(yan)(yan)(yan)近似的(de)味道，甚至(zhi)比一般香(xiang)(xiang)烟(yan)(yan)(yan)(yan)(yan)(yan)的(de)口味要多出(chu)很多，也像(xiang)香(xiang)(xiang)烟(yan)(yan)(yan)(yan)(yan)(yan)一样(yang)能吸(xi)出(chu)烟(yan)(yan)(yan)(yan)(yan)(yan)、吸(xi)出(chu)味道跟感(gan)觉来。电子(zi)烟(yan)(yan)(yan)(yan)(yan)(yan)没有(you)香(xiang)(xiang)烟(yan)(yan)(yan)(yan)(yan)(yan)中(zhong)的(de)焦(jiao)油、悬浮微粒等其他有(you)害成分。在(zai)戒(jie)烟(yan)(yan)(yan)(yan)(yan)(yan)意识逐渐加强的(de)年(nian)代，电子(zi)烟(yan)(yan)(yan)(yan)(yan)(yan)凭借高性(xing)能、高品(pin)质和(he)高市场竞(jing)争(zheng)力在(zai)各种香(xiang)(xiang)烟(yan)(yan)(yan)(yan)(yan)(yan)替代品(pin)中(zhong)脱颖而(er)出(chu)，带来巨大的(de)经济效益，减少了二(er)手烟(yan)(yan)(yan)(yan)(yan)(yan)给身边的(de)人所带来的(de)危害。

电子烟 MOS管

电子烟详细设计

短(duan)路保(bao)护(hu)：

采用芯片本身的(de)(de)低电(dian)(dian)压复(fu)(fu)(fu)位(wei)功能来(lai)实现电(dian)(dian)子烟(yan)的(de)(de)短路(lu)保(bao)护，把芯片的(de)(de)LVR设定在2.4V，当负载端短路(lu)时(shi)，芯片的(de)(de)VDD脚瞬间被拉低到2.4V以下，芯片复(fu)(fu)(fu)位(wei)，NMOS。管的(de)(de)控(kong)制(zhi)脚回到上电(dian)(dian)复(fu)(fu)(fu)位(wei)的(de)(de)状态，即为(wei)低电(dian)(dian)平切(qie)断NMOS来(lai)保(bao)护MOS管。

过充保护

由于电(dian)(dian)(dian)(dian)(dian)(dian)池(chi)直接连到芯片(pian)的(de)VDD上，通过把芯片(pian)内部(bu)基准(zhun)电(dian)(dian)(dian)(dian)(dian)(dian)压(ya)作为输(shu)入，用(yong)VDD来作参(can)考，因(yin)为内部(bu)基准(zhun)电(dian)(dian)(dian)(dian)(dian)(dian)压(ya)是(shi)固定的(de)，所(suo)以只要(yao) VDD上的(de)电(dian)(dian)(dian)(dian)(dian)(dian)压(ya)有变化时(shi)，采到的(de)AD值也会有相应(ying)的(de)变化，利(li)用(yong)AD值来反算(suan)出电(dian)(dian)(dian)(dian)(dian)(dian)池(chi)端(duan)的(de)电(dian)(dian)(dian)(dian)(dian)(dian)压(ya)，当芯片(pian)检测到电(dian)(dian)(dian)(dian)(dian)(dian)池(chi)电(dian)(dian)(dian)(dian)(dian)(dian)压(ya)高于4.2V时(shi)，让NMOS的(de)控制脚输(shu)出低电(dian)(dian)(dian)(dian)(dian)(dian)平关断(duan)NMOS来切(qie)断(duan)充(chong)电(dian)(dian)(dian)(dian)(dian)(dian)端(duan)与电(dian)(dian)(dian)(dian)(dian)(dian)池(chi)之间的(de)充(chong)电(dian)(dian)(dian)(dian)(dian)(dian)回路(lu)，防止电(dian)(dian)(dian)(dian)(dian)(dian)池(chi)过充(chong)。CSU8RP3215芯片(pian)采用(yong)内部(bu)基准(zhun)，测量(liang)电(dian)(dian)(dian)(dian)(dian)(dian)池(chi)电(dian)(dian)(dian)(dian)(dian)(dian)压(ya)，除了省去了外部(bu)参(can)考源，同时(shi)也节省了分压(ya)电(dian)(dian)(dian)(dian)(dian)(dian)阻。

电路特性：

1、恒(heng)压(ya)充电最高电压(ya)4.2V

2、充(chong)电电流为405mA。

3、也可(ke)以调整(zheng)充(chong)(chong)电(dian)(dian)(dian)(dian)电(dian)(dian)(dian)(dian)流，调整(zheng)第2管(guan)脚到地的电(dian)(dian)(dian)(dian)阻，计(ji)算公(gong)(gong)式(shi)为(wei)：ICH = 1216V / RISET 其中，ICH表(biao)示充(chong)(chong)电(dian)(dian)(dian)(dian)电(dian)(dian)(dian)(dian)流，单(dan)位(wei)为(wei)安培 RISET表(biao)示ISET管(guan)脚到地的电(dian)(dian)(dian)(dian)阻，单(dan)位(wei)为(wei)欧姆。例如，如果需要405mA的充(chong)(chong)电(dian)(dian)(dian)(dian)电(dian)(dian)(dian)(dian)流，可(ke)按下(xia)面的公(gong)(gong)式(shi)计(ji)算：RISET = 1216V/0.405A = 3kΩ 为(wei)了保证良好的稳定性和温度特(te)性，RISET建议使(shi)用精度为(wei)1%的金属膜(mo)电(dian)(dian)(dian)(dian)阻。通过测量ISET管(guan)脚的电(dian)(dian)(dian)(dian)压(ya)可(ke)以检测充(chong)(chong)电(dian)(dian)(dian)(dian)电(dian)(dian)(dian)(dian)流。充(chong)(chong)电(dian)(dian)(dian)(dian)电(dian)(dian)(dian)(dian)流可(ke)以用下(xia)面的公(gong)(gong)式(shi)计(ji)算： ICH = （VISET / RISET） × 1000。

电子烟 MOS管

低电(dian)压报警：

利用(yong)2.2小(xiao)节同样的ADC检(jian)测方式来检(jian)测VDD电(dian)(dian)(dian)压(ya)(ya)（即电(dian)(dian)(dian)池(chi)(chi)电(dian)(dian)(dian)压(ya)(ya)），当电(dian)(dian)(dian)池(chi)(chi)电(dian)(dian)(dian)压(ya)(ya)低于(yu)3.2V时(shi)，让NMOS管控(kong)制(zhi)脚输出低电(dian)(dian)(dian)平来关掉NMOS并且通过控(kong)制(zhi)PWM的输出来驱动LED呼吸灯来提(ti)醒用(yong)户电(dian)(dian)(dian)池(chi)(chi)电(dian)(dian)(dian)压(ya)(ya)过低。

雾化过流保(bao)护：

通过(guo)外部的(de)AD通道来(lai)检(jian)(jian)测(ce)NMOS管到(dao)(dao)地的(de)压降来(lai)换算(suan)出(chu)流(liu)过(guo)雾化器的(de)电流(liu)，一旦检(jian)(jian)测(ce)到(dao)(dao)雾化电流(liu)过(guo)大(da)时，芯片会把NMOS管的(de)控(kong)制脚置低来(lai)关断(duan)NMOS管，防止(zhi)雾化过(guo)流(liu)。CSU8RP3125的(de)AD检(jian)(jian)测(ce)小信(xin)号(hao)精(jing)准(zhun)，可(ke)电子烟产品(pin)的(de)可(ke)靠性。

呼吸灯的(de)控制：

利用芯片本身的(de)(de)PWM输(shu)出(chu)(chu)功能，LED灯(deng)从(cong)(cong)灭到(dao)最(zui)亮(liang)的(de)(de)过(guo)程(cheng)中(zhong)，PWM周期固(gu)定的(de)(de)情况(kuang)下，PWM从(cong)(cong)低电(dian)(dian)(dian)(dian)平(ping)(ping)开(kai)始(shi)，每3ms递(di)(di)增(zeng)一个正宽(kuan)频，一直到(dao)PWM输(shu)出(chu)(chu)为(wei)高电(dian)(dian)(dian)(dian)平(ping)(ping)。相反(fan)，LED从(cong)(cong)最(zui)亮(liang)到(dao)灭的(de)(de)过(guo)程(cheng)中(zhong)，PWM从(cong)(cong)高电(dian)(dian)(dian)(dian)平(ping)(ping)开(kai)始(shi)，每6ms递(di)(di)增(zeng)一个负(fu)宽(kuan)频，一直到(dao)PWM输(shu)出(chu)(chu)低电(dian)(dian)(dian)(dian)平(ping)(ping)为(wei)止，实(shi)现呼吸灯(deng)的(de)(de)控制。当电(dian)(dian)(dian)(dian)池电(dian)(dian)(dian)(dian)压(ya)欠压(ya)时(shi)，呼吸灯(deng)的(de)(de)渐(jian)变(bian)速度(du)时(shi)间会变(bian)为(wei)正常工作的(de)(de)1/3，以此提(ti)醒用户需要及时(shi)充电(dian)(dian)(dian)(dian)。

电子烟组成

目前，电(dian)(dian)子(zi)烟(yan)主要针(zhen)对的(de)是欧美市场，而本次设(she)计选用(yong)(yong)的(de)芯(xin)海CSU8RP3125芯(xin)片的(de)ESD（芯(xin)片级）HBM模型为(wei)8KV，工作温度(du)范(fan)围(wei)-40~85℃。经测试芯(xin)片高速PWM稳定(ding)，ADC采样效(xiao)果好，温漂小(xiao)，性能可靠。该型号芯(xin)片为(wei)MSOP-8封(feng)装，有(you)(you)利于PCB面(mian)积(ji)缩减，非常适合电(dian)(dian)子(zi)烟(yan)的(de)开(kai)发。虽(sui)然电(dian)(dian)子(zi)烟(yan)有(you)(you)款式或者(zhe)牌(pai)子(zi)，一般电(dian)(dian)子(zi)烟(yan)主要由盛放(fang)尼(ni)古丁(ding)溶(rong)液的(de)烟(yan)管(guan)、蒸发装置和电(dian)(dian)池(chi)3部分组成(cheng)。雾化器由电(dian)(dian)池(chi)杆供(gong)电(dian)(dian)，能够(gou)把烟(yan)弹内(nei)的(de)液态尼(ni)古丁(ding)转变成(cheng)雾气，从而让(rang)使用(yong)(yong)者(zhe)在吸(xi)时(shi)有(you)(you)一种类似吸(xi)烟(yan)的(de)感(gan)觉，实现“吞(tun)云吐雾”。它(ta)甚至可以根据个(ge)人喜好，向(xiang)烟(yan)管(guan)内(nei)添加巧克力、薄荷等各种味道的(de)香料(liao)。

烟杆：

烟杆内部构造(zao)使用(yong)相同的(de)基(ji)本组成部分：一个灯PCBA板，充电电池，各种电子电路(lu)。大多数电(dian)(dian)(dian)子香烟是使用锂离子及二次(ci)电(dian)(dian)(dian)池(chi)电(dian)(dian)(dian)源(yuan)元件。电(dian)(dian)(dian)池(chi)寿命(ming)则取(qu)决于电(dian)(dian)(dian)池(chi)类型和大小，使用的次(ci)数和操作环境。并且许多不同(tong)的电(dian)(dian)(dian)池(chi)充电(dian)(dian)(dian)器(qi)类型可供(gong)选(xuan)择，例如插座(zuo)直充、车充、USB接口的充电(dian)(dian)(dian)器(qi)。电(dian)(dian)(dian)池(chi)是电(dian)(dian)(dian)子香烟最大的组成部分。

有些电(dian)(dian)子香烟(yan)使用电(dian)(dian)子气(qi)流传感器启动(dong)该加热元件，一吸(xi)(xi)气(qi)就会(hui)使电(dian)(dian)池(chi)电(dian)(dian)路工(gong)作。而手动(dong)感应的需要用户按(an)下一个按(an)钮(niu),然后吸(xi)(xi)烟(yan)。气(qi)动(dong)的使用方便，手动(dong)的电(dian)(dian)路相对来说比气(qi)动(dong)稳定(ding)，出烟(yan)量(liang)也比气(qi)动(dong)的好(hao)。随着硬(ying)件和软件的发展，有些厂商开始(shi)着手研发全自(zi)(zi)动(dong)机械(xie)制造电(dian)(dian)子烟(yan)，杜绝使用人工(gong)自(zi)(zi)己布线、焊接或电(dian)(dian)子，以达到(dao)更高的安全性和可靠性。

雾化(hua)器：

一(yi)般来说烟(yan)(yan)弹就是(shi)吸嘴部分，而有些工厂应(ying)客户需求把雾(wu)(wu)化(hua)器(qi)和烟(yan)(yan)弹或者烟(yan)(yan)油一(yi)起(qi)粘合起(qi)来，做成一(yi)次性雾(wu)(wu)化(hua)器(qi)。这样(yang)做的(de)好(hao)处(chu)就是(shi)可以极大提高(gao)电子烟(yan)(yan)的(de)口味和烟(yan)(yan)雾(wu)(wu)量(liang)(liang)，同时质量(liang)(liang)更稳定了(le)(le)(le)，因(yin)为雾(wu)(wu)化(hua)器(qi)是(shi)最容易坏的(de)，传统电子烟(yan)(yan)都是(shi)一(yi)个(ge)单(dan)独的(de)雾(wu)(wu)化(hua)器(qi)，没几天就坏了(le)(le)(le)。由(you)工厂专(zhuan)业人(ren)员(yuan)注(zhu)液(ye)(ye)，避免了(le)(le)(le)自己注(zhu)液(ye)(ye)过(guo)多或过(guo)少导致(zhi)烟(yan)(yan)液(ye)(ye)倒流(liu)进嘴里或流(liu)到(dao)电池部分腐蚀电路的(de)问(wen)题，存(cun)烟(yan)(yan)油量(liang)(liang)也比一(yi)般烟(yan)(yan)弹多，密封性能好(hao)，所以他的(de)使(shi)用时间比其他烟(yan)(yan)弹都要(yao)久。这种技术现只有极少数品牌拥有。雾化器的构造就是一个加热元器件(jian)，通过(guo)电(dian)池(chi)供电(dian)发热，使(shi)其旁边(bian)的烟(yan)油(you)挥(hui)发，形成烟(yan)雾，从而让(rang)人吸的时(shi)候(hou)达到(dao)“吞云吐雾”的效(xiao)果。