{"id":3255,"date":"2021-08-15T02:03:31","date_gmt":"2021-08-15T02:03:31","guid":{"rendered":""},"modified":"2021-08-15T10:04:03","modified_gmt":"2021-08-15T02:04:03","slug":"mos%e7%ae%a1%e7%9a%84%e6%9e%84%e9%80%a0%e5%8f%8amos%e7%ae%a1%e7%a7%8d%e7%b1%bb%e5%92%8c%e7%bb%93%e6%9e%84","status":"publish","type":"post","link":"http:\/\/www.szryc.com\/?p=3255","title":{"rendered":"MOS\u7ba1\u7684\u6784\u9020\u53caMOS\u7ba1\u79cd\u7c7b\u548c\u7ed3\u6784"},"content":{"rendered":"

\n\t\u968f\u7740\u793e\u4f1a\u7684\u8fdb\u6b65\u548c\u53d1\u5c55\uff0cMOS\u7ba1\u5728\u7535\u5b50\u884c\u4e1a\u7684\u5e94\u7528\u8d8a\u6765\u8d8a\u5e7f\u6cdb\uff0c\u8428\u79d1\u5fae\u7535\u5b50SLKOR\u4f5c\u4e3a\u80fd\u591f\u7814\u53d1\u751f\u4ea7\u78b3\u5316\u7845SiC\u4ea7\u54c1\u7684“\u78b3\u5316\u7845\u4e13\u5bb6”\uff0c\u5fc5\u987b\u6765\u79d1\u666e\u4e00\u4e0b\u8fd9\u65b9\u9762\u7684\u77e5\u8bc6\u3002<\/p>\n

\n\tMOS\u5373 MOSFET<\/u>\u7684\u7b80\u5199\uff0c\u5168\u79f0\u662f\u91d1\u5c5e\u6c27\u5316\u7269\u573a\u6548\u5e94\u6676\u4f53\u7ba1<\/u>\u3002\u5c31\u662f\u5229\u7528\u8f93\u5165\u56de\u8def\u7684\u7535\u573a\u6548\u5e94\u6765\u63a7\u5236\u8f93\u51fa\u56de\u8def\u7535\u6d41<\/u>\u7684\u4e00\u79cd\u534a\u5bfc\u4f53\u5668\u4ef6\u3002MOS\u7ba1\u7684\u6784\u9020\u3001\u539f\u7406\u3001\u7279\u6027\u3001\u7b26\u53f7\u89c4\u5219\u548c\u5c01\u88c5\u79cd\u7c7b\u7b49\uff0c\u5927\u81f4\u5982\u4e0b\u3002<\/p>\n

\n\t <\/div>\n

\n\t1\u3001MOS\u7ba1\u7684\u6784\u9020\uff1a<\/p>\n

\n\tMOS\u7ba1\u7684\u6784\u9020\u662f\u5728\u4e00\u5757\u63ba\u6742\u6d53\u5ea6\u8f83\u4f4e\u7684P\u578b\u534a\u5bfc\u4f53\u7845\u886c\u5e95\u4e0a\uff0c\u7528\u534a\u5bfc\u4f53\u5149\u523b\u3001\u6269\u6563\u5de5\u827a\u5236\u4f5c\u4e24\u4e2a\u9ad8\u63ba\u6742\u6d53\u5ea6\u7684 N+\u533a\uff0c\u5e76\u7528\u91d1\u5c5e\u94dd\u5f15\u51fa\u4e24\u4e2a\u7535\u6781\uff0c\u5206\u522b\u4f5c\u4e3a\u6f0f\u6781D\u548c\u6e90\u6781S\u3002\u7136\u540e\u5728\u6f0f\u6781\u548c\u6e90\u6781\u4e4b\u95f4\u7684P\u578b\u534a\u5bfc\u4f53\u8868\u9762\u590d\u76d6\u4e00\u5c42\u5f88\u8584\u7684\u4e8c\u6c27\u5316\u7845\uff08Si02\uff09\u7edd\u7f18\u5c42\u819c\uff0c\u5728\u518d\u8fd9\u4e2a\u7edd\u7f18\u5c42\u819c\u4e0a\u88c5\u4e0a\u4e00\u4e2a\u94dd\u7535\u6781\uff0c\u4f5c\u4e3a\u6805\u6781G\u3002\u8fd9\u5c31\u6784\u6210\u4e86\u4e00\u4e2aN\u6c9f\u9053\uff08NPN \u578b\uff09\u589e\u5f3a\u578bMOS\u7ba1\u3002\u5b83\u7684\u6805\u6781\u548c\u5176\u5b83\u7535\u6781\u95f4\u662f\u7edd\u7f18\u7684\u3002<\/p>\n

\n\t\u540c\u6837\u7528\u4e0a\u8ff0\u76f8\u540c\u7684\u65b9\u6cd5\u5728\u4e00\u5757\u63ba\u6742\u6d53\u5ea6\u8f83\u4f4e\u7684N\u578b\u534a\u5bfc\u4f53\u7845\u886c\u5e95\u4e0a\uff0c\u7528\u534a\u5bfc\u4f53\u5149\u523b\u3001\u6269\u6563\u5de5\u827a\u5236\u4f5c\u4e24\u4e2a\u9ad8\u63ba\u6742\u6d53\u5ea6\u7684P+\u533a\uff0c\u53ca\u4e0a\u8ff0\u76f8\u540c\u7684\u6805\u6781\u5236\u4f5c\u8fc7\u7a0b\uff0c\u5c31\u5236\u6210\u4e3a\u4e00\u4e2aP\u6c9f\u9053\uff08PNP\u578b\uff09\u589e\u5f3a\u578bMOS\u7ba1\u3002\u56fe1-1\u6240\u793a\uff08a \uff09\u3001\uff08b\uff09\u5206\u522b\u662fP\u6c9f\u9053MOS\u7ba1\u9053\u7ed3\u6784\u56fe\u548c\u4ee3\u8868\u7b26\u53f7\u3002<\/p>\n

\n\t<\/p>\n

\n\t2\u3001MOS \u7ba1\u7684\u5de5\u4f5c\u539f\u7406\uff1a<\/p>\n

\n\t<\/p>\n

\n\t\u4ece\u56fe1-2-\uff08a\uff09\u53ef\u4ee5\u770b\u51fa\uff0c\u589e\u5f3a\u578bMOS\u7ba1\u7684\u6f0f\u6781D\u548c\u6e90\u6781S\u4e4b\u95f4\u6709\u4e24\u4e2a\u80cc\u9760\u80cc\u7684PN\u7ed3<\/u>\u3002\u5f53\u6805-\u6e90\u7535\u538bVGS=0 \u65f6\uff0c\u5373\u4f7f\u52a0\u4e0a\u6f0f-\u6e90\u7535\u538bVDS\uff0c\u603b\u6709\u4e00\u4e2aPN\u7ed3\u5904\u4e8e\u53cd\u504f\u72b6\u6001\uff0c\u6f0f-\u6e90\u6781\u95f4\u6ca1\u6709\u5bfc\u7535\u6c9f\u9053\uff08\u6ca1\u6709\u7535\u6d41\u6d41\u8fc7\uff09\uff0c\u6240\u4ee5\u8fd9\u65f6\u6f0f\u6781\u7535\u6d41ID=0\u3002\u6b64\u65f6\u82e5\u5728\u6805-\u6e90\u6781\u95f4\u52a0\u4e0a\u6b63\u5411\u7535\u538b\uff0c\u56fe 1-2-(b)\u6240\u793a\uff0c\u5373VGS\uff1e0\uff0c\u5219\u6805\u6781\u548c\u7845\u886c\u5e95\u4e4b\u95f4\u7684SiO2\u7edd\u7f18\u5c42\u4e2d\u4fbf\u4ea7\u751f\u4e00\u4e2a\u6805\u6781\u6307\u5411P\u578b\u7845\u886c\u5e95\u7684\u7535\u573a\uff0c\u7531\u4e8e\u6c27\u5316<\/u>\u7269\u5c42\u662f\u7edd\u7f18\u7684\uff0c\u6805\u6781\u6240\u52a0\u7535\u538b VGS\u65e0\u6cd5\u5f62\u6210\u7535\u6d41\uff0c\u6c27\u5316\u7269\u5c42\u7684\u4e24\u8fb9\u5c31\u5f62\u6210\u4e86\u4e00\u4e2a\u7535\u5bb9<\/u>\uff0cVGS\u7b49\u6548\u662f\u5bf9\u8fd9\u4e2a\u7535\u5bb9\u5145\u7535\uff0c\u5e76\u5f62\u6210\u4e00\u4e2a\u7535\u573a\uff0c\u968f\u7740VGS\u9010\u6e10\u5347\u9ad8\uff0c\u53d7\u6805\u6781\u6b63\u7535\u538b\u7684\u5438\u5f15\uff0c\u5728\u8fd9\u4e2a\u7535\u5bb9\u7684\u53e6\u4e00\u8fb9\u5c31\u805a\u96c6\u5927\u91cf\u7684\u7535\u5b50\u5e76\u5f62\u6210\u4e86\u4e00\u4e2a\u4ece\u6f0f\u6781\u5230\u6e90\u6781\u7684N\u578b\u5bfc\u7535\u6c9f\u9053\uff0c\u5f53VGS\u5927\u4e8e\u7ba1\u5b50\u7684\u5f00\u542f\u7535\u538bVT\uff08\u4e00\u822c\u7ea6\u4e3a2V\uff09\u65f6\uff0cN\u6c9f\u9053\u7ba1\u5f00\u59cb\u5bfc\u901a\uff0c\u5f62\u6210\u6f0f\u6781\u7535\u6d41ID\uff0c\u6211\u4eec\u628a\u5f00\u59cb\u5f62\u6210\u6c9f\u9053\u65f6\u7684\u6805-\u6e90\u6781\u7535\u538b\u79f0\u4e3a\u5f00\u542f\u7535\u538b\uff0c\u4e00\u822c\u7528VT\u8868\u793a\u3002\u63a7\u5236\u6805\u6781\u7535\u538bVGS\u7684\u5927\u5c0f\u6539\u53d8\u4e86\u7535\u573a\u7684\u5f3a\u5f31\uff0c\u5c31\u53ef\u4ee5\u8fbe\u5230\u63a7\u5236\u6f0f\u6781\u7535\u6d41 ID\u7684\u5927\u5c0f\u7684\u76ee\u7684\uff0c\u8fd9\u4e5f\u662fMOS\u7ba1\u7528\u7535\u573a\u6765\u63a7\u5236\u7535\u6d41\u7684\u4e00\u4e2a\u91cd\u8981\u7279\u70b9\uff0c\u6240\u4ee5\u4e5f\u79f0\u4e4b\u4e3a\u573a\u6548\u5e94\u7ba1<\/u>\u3002<\/p>\n

\n\t3\u3001MOS \u7ba1\u7684\u7279\u6027\uff1a<\/p>\n

\n\t\u4e0a\u8ff0MOS\u7ba1\u7684\u5de5\u4f5c\u539f\u7406\u4e2d\u53ef\u4ee5\u770b\u51fa\uff0cMOS\u7ba1\u7684\u6805\u6781G\u548c\u6e90\u6781S\u4e4b\u95f4\u662f\u7edd\u7f18\u7684\uff0c\u7531\u4e8eSiO2\u7edd\u7f18\u5c42\u7684\u5b58\u5728\uff0c\u5728\u6805\u6781G\u548c\u6e90\u6781S\u4e4b\u95f4\u7b49\u6548\u662f\u4e00\u4e2a\u7535\u5bb9\u5b58\u5728\uff0c\u7535\u538bVGS\u4ea7\u751f\u7535\u573a\u4ece\u800c\u5bfc\u81f4\u6e90\u6781-\u6f0f\u6781\u7535\u6d41\u7684\u4ea7\u751f\u3002\u6b64\u65f6\u7684\u6805\u6781\u7535\u538bVGS\u51b3\u5b9a\u4e86\u6f0f\u6781\u7535\u6d41\u7684\u5927\u5c0f\uff0c\u63a7\u5236\u6805\u6781\u7535\u538bVGS\u7684\u5927\u5c0f\u5c31\u53ef\u4ee5\u63a7\u5236\u6f0f\u6781\u7535\u6d41ID\u7684\u5927\u5c0f\u3002\u8fd9\u5c31\u53ef\u4ee5\u5f97\u51fa\u5982\u4e0b\u7ed3\u8bba\uff1a<\/p>\n

\n\t1\uff09 MOS \u7ba1\u662f\u4e00\u4e2a\u7531\u6539\u53d8\u7535\u538b\u6765\u63a7\u5236\u7535\u6d41\u7684\u5668\u4ef6\uff0c\u6240\u4ee5\u662f\u7535\u538b\u5668\u4ef6\u3002<\/p>\n

\n\t2\uff09 MOS \u7ba1\u9053\u8f93\u5165\u7279\u6027\u4e3a\u5bb9\u6027\u7279\u6027\uff0c\u6240\u4ee5\u8f93\u5165\u963b\u6297<\/u>\u6781\u9ad8\u3002<\/p>\n

\n\t4\u3001MOS \u7ba1\u7684\u7535\u538b\u6781\u6027\u548c\u7b26\u53f7\u89c4\u5219\uff1a<\/p>\n

\n\t\u56fe1-4-\uff08a\uff09\u662fN\u6c9f\u9053MOS\u7ba1\u7684\u7b26\u53f7\uff0c\u56fe\u4e2dD\u662f\u6f0f\u6781\uff0cS\u662f\u6e90\u6781\uff0cG\u662f\u6805\u6781\uff0c\u4e2d\u95f4\u7684\u7bad\u5934\u8868\u793a\u886c\u5e95\uff0c\u5982\u679c\u7bad\u5934\u5411\u91cc\u8868\u793a\u662fN\u6c9f\u9053\u7684MOS\u7ba1\uff0c\u7bad\u5934\u5411\u5916\u8868\u793a\u662f P\u6c9f\u9053\u7684MOS\u7ba1\u3002<\/p>\n

\n\t\u5b9e\u9645\u5728MOS\u7ba1\u751f\u4ea7\u7684\u8fc7\u7a0b\u4e2d\u886c\u5e95\u5728\u51fa\u5382\u524d\u5c31\u548c\u6e90\u6781\u8fde\u63a5\uff0c\u6240\u4ee5\u5728\u7b26\u53f7\u7684\u89c4\u5219\u4e2d\uff0c\u8868\u793a\u886c\u5e95\u7684\u7bad\u5934\u4e5f\u5fc5\u987b\u548c\u6e90\u6781\u76f8\u8fde\u63a5\uff0c\u4ee5\u533a\u522b\u6f0f\u6781\u548c\u6e90\u6781\u3002\u56fe1-4-\uff08c\uff09\u662fP\u6c9f\u9053MOS\u7ba1\u7684\u7b26\u53f7\u3002MOS\u7ba1\u5e94\u7528\u7535\u538b\u7684\u6781\u6027\u548c\u6211\u4eec\u666e\u901a\u7684\u6676\u4f53<\/u>\u4e09\u6781\u7ba1<\/u>\u76f8\u540c\uff0cN\u6c9f\u9053\u7684\u7c7b\u4f3cNPN\u6676\u4f53\u4e09\u6781\u7ba1\uff0c\u6f0f\u6781D\u63a5\u6b63\u6781\uff0c\u6e90\u6781S\u63a5\u8d1f\u6781\uff0c\u6805\u6781G\u6b63\u7535\u538b\u65f6\u5bfc\u7535\u6c9f\u9053\u5efa\u7acb\uff0cN\u6c9f\u9053MOS\u7ba1\u5f00\u59cb\u5de5\u4f5c,\u5982\u56fe1-4-\uff08b\uff09\u6240\u793a\u3002\u540c\u6837P\u9053\u7684\u7c7b\u4f3cPNP\u6676\u4f53\u4e09\u6781\u7ba1\uff0c\u6f0f\u6781D\u63a5\u8d1f\u6781\uff0c\u6e90\u6781S\u63a5\u6b63\u6781\uff0c\u6805\u6781G\u8d1f\u7535\u538b\u65f6\uff0c\u5bfc\u7535\u6c9f\u9053\u5efa\u7acb\uff0cP\u6c9f\u9053MOS\u7ba1\u5f00\u59cb\u5de5\u4f5c,\u5982\u56fe1-4-\uff08d\uff09\u6240\u793a\u3002<\/p>\n

\n\t<\/p>\n

\n\tN\u6c9f\u9053MOS\u7ba1\u7b26\u53f7\u56fe1-4-\uff08a\uff09<\/p>\n

\n\tN\u6c9f\u9053MOS\u7ba1\u7535\u538b\u6781\u6027\u53ca\u886c\u5e95\u8fde\u63a51-4-\uff08b\uff09<\/p>\n

\n\t<\/p>\n

\n\t\uff08c\uff09<\/p>\n

\n\t<\/p>\n

\n\t\uff08d\uff09<\/p>\n

\n\tP\u6c9f\u9053MOS\u7ba1\u7b26\u53f7\u56fe1-4-\uff08c\uff09<\/p>\n

\n\tP\u6c9f\u9053MOS\u7ba1\u7535\u538b\u6781\u6027\u53ca\u886c\u5e95\u8fde\u63a51-4-\uff08d\uff09<\/p>\n

\n\tMOS\u7ba1\u662f\u91d1\u5c5e\uff08metal\uff09—\u6c27\u5316\u7269\uff08oxide\uff09—\u534a\u5bfc\u4f53\uff08semiconductor\uff09\u573a\u6548\u5e94\u6676\u4f53\u7ba1\uff0c\u6216\u8005\u79f0\u662f\u91d1\u5c5e—\u7edd\u7f18\u4f53\uff08insulator\uff09 —\u534a\u5bfc\u4f53\u3002MOS\u7ba1\u7684source\u548cdrain\u662f\u53ef\u4ee5\u5bf9\u8c03\u7684\uff0c\u4ed6\u4eec\u90fd\u662f\u5728P\u578bbackgate\u4e2d\u5f62\u6210\u7684N\u578b\u533a\u3002\u5728\u591a\u6570\u60c5\u51b5\u4e0b\uff0c\u8fd9\u4e2a\u4e24\u4e2a\u533a\u662f\u4e00\u6837\u7684\uff0c\u5373\u4f7f\u4e24 \u7aef\u5bf9\u8c03\u4e5f\u4e0d\u4f1a\u5f71\u54cd\u5668\u4ef6\u7684\u6027\u80fd\u3002\u8fd9\u6837\u7684\u5668\u4ef6\u88ab\u8ba4\u4e3a\u662f\u5bf9\u79f0\u7684\u3002\u76ee\u524d\u5728\u5e02\u573a\u5e94\u7528\u65b9\u9762\uff0c\u6392\u540d\u7b2c\u4e00\u7684\u662f\u6d88\u8d39\u7c7b\u7535\u5b50\u7535\u6e90\u9002\u914d\u5668<\/u>\u4ea7\u54c1\u3002\u800cMOS\u7ba1\u7684\u5e94\u7528\u9886\u57df\u6392\u540d\u7b2c\u4e8c\u7684\u662f\u8ba1\u7b97\u673a<\/u>\u4e3b\u677f\u3001NB\u3001\u8ba1\u7b97\u673a\u7c7b\u9002\u914d\u5668\u3001LCD\u663e\u793a\u5668<\/u>\u7b49\u4ea7\u54c1\uff0c\u968f\u7740\u56fd\u60c5\u7684\u53d1\u5c55\u8ba1\u7b97\u673a\u4e3b\u677f\u3001\u8ba1\u7b97\u673a\u7c7b\u9002\u914d\u5668\u3001LCD\u663e\u793a\u5668\u5bf9MOS\u7ba1\u7684\u9700\u6c42\u6709\u8981\u8d85\u8fc7\u6d88\u8d39\u7c7b\u7535\u5b50\u7535\u6e90\u9002\u914d\u5668\u7684\u73b0\u8c61\u4e86\u3002\u7b2c\u4e09\u7684\u5c31\u5c5e\u7f51\u7edc\u901a\u4fe1\u3001\u5de5\u4e1a\u63a7\u5236\u3001\u6c7d\u8f66\u7535\u5b50\u4ee5\u53ca\u7535\u529b\u8bbe\u5907\u9886\u57df\u4e86\uff0c\u8fd9\u4e9b\u4ea7\u54c1\u5bf9\u4e8eMOS\u7ba1\u7684\u9700\u6c42\u4e5f\u662f\u5f88\u5927\u7684\uff0c\u7279\u522b\u662f\u73b0\u5728\u6c7d\u8f66\u7535\u5b50\u5bf9\u4e8eMOS\u7ba1\u7684\u9700\u6c42\u76f4\u8ffd\u6d88\u8d39\u7c7b\u7535\u5b50\u4e86\u3002<\/p>\n

\n\t <\/p>\n

\n\t\u4e0b\u9762\u5bf9MOS\u5931\u6548\u7684\u539f\u56e0\u603b\u7ed3\u4ee5\u4e0b\u516d\u70b9\uff0c\u7136\u540e\u5bf91\uff0c2\u91cd\u70b9\u8fdb\u884c\u5206\u6790\uff1a1\uff1a\u96ea\u5d29\u5931\u6548\uff08\u7535\u538b\u5931\u6548\uff09\uff0c\u4e5f\u5c31\u662f\u6211\u4eec\u5e38\u8bf4\u7684\u6f0f\u6e90\u95f4\u7684BVdss\u7535\u538b\u8d85\u8fc7MOSFET\u7684\u989d\u5b9a\u7535\u538b\uff0c\u5e76\u4e14\u8d85\u8fc7\u8fbe\u5230\u4e86\u4e00\u5b9a\u7684\u80fd\u529b\u4ece\u800c\u5bfc\u81f4MOSFET\u5931\u6548\u30022\uff1aSOA\u5931\u6548\uff08\u7535\u6d41\u5931\u6548\uff09\uff0c\u65e2\u8d85\u51faMOSFET\u5b89\u5168\u5de5\u4f5c\u533a\u5f15\u8d77\u5931\u6548\uff0c\u5206\u4e3aId\u8d85\u51fa\u5668\u4ef6\u89c4\u683c\u5931\u6548\u4ee5\u53caId\u8fc7\u5927\uff0c\u635f\u8017\u8fc7\u9ad8\u5668\u4ef6\u957f\u65f6\u95f4\u70ed\u79ef\u7d2f\u800c\u5bfc\u81f4\u7684\u5931\u6548\u30023\uff1a\u4f53\u4e8c\u6781\u7ba1<\/u>\u5931\u6548\uff1a\u5728\u6865\u5f0f\u3001LLC\u7b49\u6709\u7528\u5230\u4f53\u4e8c\u6781\u7ba1\u8fdb\u884c\u7eed\u6d41\u7684\u62d3\u6251\u7ed3\u6784\u4e2d\uff0c\u7531\u4e8e\u4f53\u4e8c\u6781\u7ba1\u906d\u53d7\u7834\u574f\u800c\u5bfc\u81f4\u7684\u5931\u6548\u30024\uff1a\u8c10\u632f\u5931\u6548\uff1a\u5728\u5e76\u8054\u4f7f\u7528\u7684\u8fc7\u7a0b\u4e2d\uff0c\u6805\u6781\u53ca\u7535\u8def<\/u>\u5bc4\u751f\u53c2\u6570\u5bfc\u81f4\u9707\u8361\u5f15\u8d77\u7684\u5931\u6548\u30025\u9759\u7535\u5931\u6548\uff1a\u5728\u79cb\u51ac\u5b63\u8282\uff0c\u7531\u4e8e\u4eba\u4f53\u53ca\u8bbe\u5907\u9759\u7535\u800c\u5bfc\u81f4\u7684\u5668\u4ef6\u5931\u6548\u30026\uff1a\u6805\u6781\u7535\u538b\u5931\u6548\uff1a\u7531\u4e8e\u6805\u6781\u906d\u53d7\u5f02\u5e38\u7535\u538b\u5c16\u5cf0\uff0c\u800c\u5bfc\u81f4\u6805\u6781\u6805\u6c27\u5c42\u5931\u6548\u3002\u96ea\u5d29\u5931\u6548\u5206\u6790\uff08\u7535\u538b\u5931\u6548\uff09\u5230\u5e95\u4ec0\u4e48\u662f\u96ea\u5d29\u5931\u6548\u5462\uff0c\u7b80\u5355\u6765\u8bf4MOSFET\u5728\u7535\u6e90\u677f\u4e0a\u7531\u4e8e\u6bcd\u7ebf\u7535\u538b\u3001\u53d8\u538b\u5668<\/u>\u53cd\u5c04\u7535\u538b\u3001\u6f0f\u611f\u5c16\u5cf0\u7535\u538b\u7b49\u7b49\u7cfb\u7edf\u7535\u538b\u53e0\u52a0\u5728MOSFET\u6f0f\u6e90\u4e4b\u95f4\uff0c\u5bfc\u81f4\u7684\u4e00\u79cd\u5931\u6548\u6a21\u5f0f\u3002\u7b80\u800c\u8a00\u4e4b\u5c31\u662f\u7531\u4e8e\u5c31\u662fMOSFET\u6f0f\u6e90\u6781\u7684\u7535\u538b\u8d85\u8fc7\u5176\u89c4\u5b9a\u7535\u538b\u503c\u5e76\u8fbe\u5230\u4e00\u5b9a\u7684\u80fd\u91cf\u9650\u5ea6\u800c\u5bfc\u81f4\u7684\u4e00\u79cd\u5e38\u89c1\u7684\u5931\u6548\u6a21\u5f0f\u3002\u4e0b\u9762\u7684\u56fe\u7247\u4e3a\u96ea\u5d29\u6d4b\u8bd5<\/u>\u7684\u7b49\u6548\u539f\u7406\u56fe\uff0c\u505a\u4e3a\u7535\u6e90\u5de5\u7a0b\u5e08\u53ef\u4ee5\u7b80\u5355\u4e86\u89e3\u4e0b\u3002<\/p>\n

\n\t<\/p>\n

\n\t\u53ef\u80fd\u6211\u4eec\u7ecf\u5e38\u8981\u6c42\u5668\u4ef6\u751f\u4ea7\u5382\u5bb6\u5bf9\u6211\u4eec\u7535\u6e90\u677f\u4e0a\u7684MOSFET\u8fdb\u884c\u5931\u6548\u5206\u6790\uff0c\u5927\u591a\u6570\u5382\u5bb6\u90fd\u4ec5\u4ec5\u7ed9\u4e00\u4e2aEAS.EOS\u4e4b\u7c7b\u7684\u7ed3\u8bba\uff0c\u90a3\u4e48\u5230\u5e95\u6211\u4eec\u600e\u4e48\u533a\u5206\u662f\u5426\u662f\u96ea\u5d29\u5931\u6548\u5462\uff0c\u4e0b\u9762\u662f\u4e00\u5f20\u7ecf\u8fc7\u96ea\u5d29\u6d4b\u8bd5\u5931\u6548\u7684\u5668\u4ef6\u56fe\uff0c\u6211\u4eec\u53ef\u4ee5\u8fdb\u884c\u5bf9\u6bd4\u4ece\u800c\u786e\u5b9a\u662f\u5426\u662f\u96ea\u5d29\u5931\u6548\u3002\u96ea\u5d29\u5931\u6548\u7684\u9884\u9632\u63aa\u65bd\u96ea\u5d29\u5931\u6548\u5f52\u6839\u7ed3\u5e95\u662f\u7535\u538b\u5931\u6548\uff0c\u56e0\u6b64\u9884\u9632\u6211\u4eec\u7740\u91cd\u4ece\u7535\u538b\u6765\u8003\u8651\u3002\u5177\u4f53\u53ef\u4ee5\u53c2\u8003\u4ee5\u4e0b\u7684\u65b9\u5f0f\u6765\u5904\u7406\u30021\uff1a\u5408\u7406\u964d\u989d\u4f7f\u7528\uff0c\u76ee\u524d\u884c\u4e1a\u5185\u7684\u964d\u989d\u4e00\u822c\u9009\u53d680%-95%\u7684\u964d\u989d\uff0c\u5177\u4f53\u60c5\u51b5\u6839\u636e\u4f01\u4e1a\u7684\u4fdd\u4fee\u6761\u6b3e\u53ca\u7535\u8def\u5173\u6ce8\u70b9\u8fdb\u884c\u9009\u53d6\u30022\uff1a\u5408\u7406\u7684\u53d8\u538b\u5668\u53cd\u5c04\u7535\u538b\u30023\uff1a\u5408\u7406\u7684RCD\u53caTVS<\/u>\u5438\u6536\u7535\u8def\u8bbe\u8ba1\u30024\uff1a\u5927\u7535\u6d41\u5e03\u7ebf\u5c3d\u91cf\u91c7\u7528\u7c97\u3001\u77ed\u7684\u5e03\u5c40\u7ed3\u6784\uff0c\u5c3d\u91cf\u51cf\u5c11\u5e03\u7ebf\u5bc4\u751f\u7535\u611f\u30025\uff1a\u9009\u62e9\u5408\u7406\u7684\u6805\u6781\u7535\u963b<\/u>Rg\u30026\uff1a\u5728\u5927\u529f\u7387\u7535\u6e90\u4e2d\uff0c\u53ef\u4ee5\u6839\u636e\u9700\u8981\u9002\u5f53\u7684\u52a0\u5165RC\u51cf\u9707\u6216\u9f50\u7eb3\u4e8c\u6781\u7ba1\u8fdb\u884c\u5438\u6536\u3002<\/p>\n

\n\t <\/p>\n

\n\tSOA\u5931\u6548\uff08\u7535\u6d41\u5931\u6548\uff09\u518d\u7b80\u5355\u8bf4\u4e0b\u7b2c\u4e8c\u70b9\uff0cSOA\u5931\u6548SOA\u5931\u6548\u662f\u6307\u7535\u6e90\u5728\u8fd0\u884c\u65f6\u5f02\u5e38\u7684\u5927\u7535\u6d41\u548c\u7535\u538b\u540c\u65f6\u53e0\u52a0\u5728MOSFET\u4e0a\u9762\uff0c\u9020\u6210\u77ac\u65f6\u5c40\u90e8\u53d1\u70ed\u800c\u5bfc\u81f4\u7684\u7834\u574f\u6a21\u5f0f\u3002\u6216\u8005\u662f\u82af\u7247\u4e0e\u6563\u70ed\u5668\u53ca\u5c01\u88c5\u4e0d\u80fd\u53ca\u65f6\u8fbe\u5230\u70ed\u5e73\u8861\u5bfc\u81f4\u70ed\u79ef\u7d2f\uff0c\u6301\u7eed\u7684\u53d1\u70ed\u4f7f\u6e29\u5ea6\u8d85\u8fc7\u6c27\u5316\u5c42\u9650\u5236\u800c\u5bfc\u81f4\u7684\u70ed\u51fb\u7a7f\u6a21\u5f0f\u3002\u5173\u4e8eSOA\u5404\u4e2a\u7ebf\u7684\u53c2\u6570\u9650\u5b9a\u503c\u53ef\u4ee5\u53c2\u8003\u4e0b\u9762\u56fe\u7247\u3002<\/p>\n

\n\t1\uff1a\u53d7\u9650\u4e8e\u6700\u5927\u989d\u5b9a\u7535\u6d41\u53ca\u8109\u51b2\u7535\u6d412\uff1a\u9650\u4e8e\u6700\u5927\u8282\u6e29\u4e0b\u7684RDSON\u30023\uff1a\u53d7\u9650\u4e8e\u5668\u4ef6\u6700\u5927\u7684\u8017\u6563\u529f\u7387\u30024\uff1a\u53d7\u9650\u4e8e\u6700\u5927\u5355\u4e2a\u8109\u51b2\u7535\u6d41\u30025\uff1a\u51fb\u7a7f\u7535\u538bBVDSS\u9650\u5236\u533a\u6211\u4eec\u7535\u6e90\u4e0a\u7684MOSFET\uff0c\u53ea\u8981\u4fdd\u8bc1\u80fd\u5668\u4ef6\u5904\u4e8e\u4e0a\u9762\u9650\u5236\u533a\u7684\u8303\u56f4\u5185\uff0c\u5c31\u80fd\u6709\u6548\u7684\u89c4\u907f\u7531\u4e8eMOSFET\u800c\u5bfc\u81f4\u7684\u7535\u6e90\u5931\u6548\u95ee\u9898\u7684\u4ea7\u751f\u3002\u3002<\/p>\n

\n\t <\/p>\n

\n\t1\uff1a\u786e\u4fdd\u5728\u6700\u5dee\u6761\u4ef6\u4e0b\uff0cMOSFET\u7684\u6240\u6709\u529f\u7387\u9650\u5236\u6761\u4ef6\u5747\u5728SOA\u9650\u5236\u7ebf\u4ee5\u5185\u30022\uff1a\u5c06OCP\u529f\u80fd\u4e00\u5b9a\u8981\u505a\u7cbe\u786e\u7ec6\u81f4\u3002\u5728\u8fdb\u884cOCP\u70b9\u8bbe\u8ba1\u65f6\uff0c\u4e00\u822c\u53ef\u80fd\u4f1a\u53d61.1-1.5\u500d\u7535\u6d41\u4f59\u91cf\u7684\u5de5\u7a0b\u5e08\u5c45\u591a\uff0c\u7136\u540e\u5c31\u6839\u636eIC\u7684\u4fdd\u62a4\u7535\u538b\u6bd4\u59820.7V\u5f00\u59cb\u8c03\u8bd5RS<\/u>ENSE\u7535\u963b\u3002\u6709\u4e9b\u6709\u7ecf\u9a8c\u7684\u4eba\u4f1a\u5c06\u68c0\u6d4b\u5ef6\u8fdf\u65f6\u95f4\u3001CISS\u5bf9OCP\u5b9e\u9645\u7684\u5f71\u54cd\u8003\u8651\u5728\u5185\u3002\u4f46\u662f\u6b64\u65f6\u6709\u4e2a\u66f4\u503c\u5f97\u5173\u6ce8\u7684\u53c2\u6570\uff0c\u90a3\u5c31\u662fMOSFET\u7684Td\uff08off\uff09\u3002\u5b83\u5230\u5e95\u6709\u4ec0\u4e48\u5f71\u54cd\u5462\uff0c\u6211\u4eec\u770b\u4e0b\u9762FLYBACK\u7535\u6d41\u6ce2\u5f62\u56fe\uff08\u56fe\u5f62<\/u>\u4e0d\u662f\u592a\u6e05\u695a\uff0c\u5341\u5206\u62b1\u6b49\uff0c\u5efa\u8bae\u53cc\u51fb\u653e\u5927\u89c2\u770b\uff09\u3002<\/p>\n

\n\t <\/p>\n

\n\t\u4ece\u56fe\u4e2d\u53ef\u4ee5\u770b\u51fa\uff0c\u7535\u6d41\u6ce2\u5f62\u5728\u5feb\u5230\u7535\u6d41\u5c16\u5cf0\u65f6\uff0c\u6709\u4e2a\u4e0b\u8dcc\uff0c\u8fd9\u4e2a\u4e0b\u8dcc\u70b9\u540e\u53c8\u6709\u4e00\u6bb5\u7684\u4e0a\u5347\u65f6\u95f4\uff0c\u8fd9\u6bb5\u65f6\u95f4\u5176\u672c\u8d28\u5c31\u662fIC\u5728\u68c0\u6d4b\u5230\u8fc7\u6d41\u4fe1\u53f7\u6267\u884c\u5173\u65ad\u540e\uff0cMOSFET\u672c\u8eab\u4e5f\u5f00\u59cb\u6267\u884c\u5173\u65ad\uff0c\u4f46\u662f\u7531\u4e8e\u5668\u4ef6\u672c\u8eab\u7684\u5173\u65ad\u5ef6\u8fdf\uff0c\u56e0\u6b64\u7535\u6d41\u4f1a\u6709\u4e2a\u4e8c\u6b21\u4e0a\u5347\u5e73\u53f0\uff0c\u5982\u679c\u4e8c\u6b21\u4e0a\u5347\u5e73\u53f0\u8fc7\u5927\uff0c\u90a3\u4e48\u5728\u53d8\u538b\u5668\u4f59\u91cf\u8bbe\u8ba1\u4e0d\u8db3\u65f6\uff0c\u5c31\u6781\u6709\u53ef\u80fd\u4ea7\u751f\u78c1\u9971\u548c\u7684\u4e00\u4e2a\u7535\u6d41\u51b2\u51fb\u6216\u8005\u7535\u6d41\u8d85\u5668\u4ef6\u89c4\u683c\u7684\u4e00\u4e2a\u5931\u6548\u30023\uff1a\u5408\u7406\u7684\u70ed\u8bbe\u8ba1\u4f59\u91cf\uff0c\u8fd9\u4e2a\u5c31\u4e0d\u591a\u8bf4\u4e86\uff0c\u5404\u4e2a\u4f01\u4e1a\u90fd\u6709\u81ea\u5df1\u7684\u964d\u989d\u89c4\u8303\uff0c\u4e25\u683c\u6267\u884c\u5c31\u53ef\u4ee5\u4e86\uff0c\u4e0d\u884c\u5c31\u52a0\u6563\u70ed\u5668\u3002<\/p>\n

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