{"id":27586,"date":"2025-05-10T09:02:49","date_gmt":"2025-05-10T01:02:49","guid":{"rendered":"https:\/\/techclass.wfjydl.com\/?p=27586"},"modified":"2025-11-13T16:55:03","modified_gmt":"2025-11-13T08:55:03","slug":"sic-mosfet%ef%bc%9a%e6%a0%b9%e6%8d%ae%e5%bc%80%e5%85%b3%e6%b3%a2%e5%bd%a2%e8%ae%a1%e7%ae%97%e6%8d%9f%e8%80%97%e7%9a%84%e6%96%b9%e6%b3%95-2","status":"publish","type":"post","link":"https:\/\/techclass.wfjydl.com\/knowledge\/sic\/a-sic\/09-a-sic\/27586","title":{"rendered":"SiC MOSFET\uff1a\u6839\u636e\u5f00\u5173\u6ce2\u5f62\u8ba1\u7b97\u635f\u8017\u7684\u65b9\u6cd5"},"content":{"rendered":"\\(\\)\n\u6587\u672c\u5c06\u4ecb\u7ecd\u5982\u4f55\u6839\u636e\u5f00\u5173\u6ce2\u5f62\u8ba1\u7b97\u4f7f\u7528\u4e86SiC MOSFET\u7684\u5f00\u5173\u7535\u8def\u4e2d\u7684SiC MOSFET\u7684\u635f\u8017\u3002\u8fd9\u662f\u4e00\u79cd\u5728\u7ebf\u6027\u8fd1\u4f3c\u7684\u6709\u6548\u8303\u56f4\u5185\u5bf9\u5f00\u5173\u6ce2\u5f62\u8fdb\u884c\u5206\u5272\uff0c\u5e76\u4f7f\u7528\u8fd1\u4f3c\u516c\u5f0f\u8ba1\u7b97\u529f\u7387\u635f\u8017\u7684\u65b9\u6cd5\u3002<\/p>\n<ul class=\"nml_li\">\n<li><a href=\"#001\">\u5f00\u5173\u6ce2\u5f62\u7684\u6d4b\u91cf\u65b9\u6cd5<\/a><\/li>\n<li><a href=\"#002\">\u901a\u8fc7\u6ce2\u5f62\u7684\u7ebf\u6027\u8fd1\u4f3c\u5206\u5272\u6765\u8ba1\u7b97\u635f\u8017\u7684\u65b9\u6cd5<\/a><\/li>\n<li><a href=\"#003\">\u6839\u636e\u6d4b\u5f97\u6ce2\u5f62\u8ba1\u7b97\u529f\u7387\u635f\u8017\u793a\u4f8b<\/a><\/li>\n<li><a href=\"#004\">\u5404\u79cd\u6ce2\u5f62\u7684\u5f00\u5173\u635f\u8017\u8ba1\u7b97\u793a\u4f8b<\/a><\/li>\n<li><a href=\"#005\">\u5404\u79cd\u6ce2\u5f62\u7684\u5bfc\u901a\u635f\u8017\u8ba1\u7b97\u793a\u4f8b<\/a><\/li>\n<\/ul>\n<h2 id=\"001\">\u5f00\u5173\u6ce2\u5f62\u7684\u6d4b\u91cf\u65b9\u6cd5<\/h2>\n<p>\u9996\u5148\u662f\u5f00\u5173\u6ce2\u5f62\u7684\u6d4b\u91cf\u65b9\u6cd5\u3002\u8fd1\u5e74\u6765\uff0c\u4e00\u4e9b\u793a\u6ce2\u5668\u5df2\u7ecf\u5177\u5907\u53ef\u4ee5\u81ea\u52a8\u8ba1\u7b97\u5e76\u663e\u793a\u6240\u89c2\u6d4b\u6ce2\u5f62\u7684\u529f\u7387\u635f\u8017\u7684\u529f\u80fd\uff0c\u4f46\u5982\u679c\u6ca1\u6709\u8be5\u529f\u80fd\uff0c\u5c31\u9700\u8981\u901a\u8fc7\u6d4b\u5f97\u7684\u6ce2\u5f62\u6765\u8ba1\u7b97\u635f\u8017\u4e86\u3002\u4e3a\u6b64\uff0c\u9700\u8981\u4e86\u89e3\u5177\u4f53\u7684\u6d4b\u91cf\u65b9\u6cd5\u548c\u6ce2\u5f62\u3002<br \/>\n\u56fe1\u662f\u5f00\u5173\u7535\u8def\u3001\u76d1\u6d4b\u6ce2\u5f62\u7684\u63a2\u5934\u4ee5\u53ca\u6d4b\u91cf\u793a\u610f\u56fe\u3002\u6211\u4eec\u4f7f\u7528\u5dee\u5206\u63a2\u5934\u6765\u6d4b\u91cfMOSFET\u7684\u6f0f-\u6e90\u7535\u538b\u3002\u53e6\u5916\uff0c\u4f7f\u7528\u7535\u6d41\u63a2\u5934\u6765\u6d4b\u91cf\u6f0f\u6781\u7535\u6d41\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-27587 aligncenter\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2025\/05\/001-1.png\" alt=\"\" width=\"1072\" height=\"700\" \/><br \/>\n\u56fe2\u4e3a\u5404\u90e8\u5206\u7684\u6ce2\u5f62\u548c\u529f\u7387\u635f\u8017\uff08\u9634\u5f71\u533a\u57df\uff09\u793a\u610f\u56fe\u3002<\/p>\n<p>\\(t_{on}\\)\u8868\u793a\u5f00\u901a\u65f6\u95f4\uff0c\\(t_{off}\\)\u8868\u793a\u5173\u65ad\u65f6\u95f4\uff0c\u5728\u8be5\u533a\u95f4\u7684\\(V_{DS}\\)\u548c\\(I_D\\)\u91cd\u53e0\u90e8\u5206\u4ea7\u751f\u4e86\u5f00\u5173\u635f\u8017\u3002\u7531\u4e8e\u8be5\u7535\u8def\u662f\u611f\u6027\u8d1f\u8f7d\uff0c\u56e0\u6b64\u5728\u5f00\u901a\u65f6\uff0c\\(I_D\\)\u4f1a\u5148\u5f00\u59cb\u53d8\u5316\uff0c\u7535\u6d41\u53d8\u5316\u7ed3\u675f\u540e\\(V_{DS}\\)\u5f00\u59cb\u53d8\u5316\u3002\u5173\u65ad\u65f6\u5219\u76f8\u53cd\uff0c\\(V_{DS}\\)\u5148\u5f00\u59cb\u53d8\u5316\uff0c\u7535\u538b\u53d8\u5316\u7ed3\u675f\u540e\\(I_D\\)\u624d\u5f00\u59cb\u53d8\u5316\u3002<br \/>\n\\(t_{on}\\)\u662fMOSFET\u7684\u5bfc\u901a\u533a\u95f4\uff0c\u5728\u8be5\u533a\u95f4\u4e2d\uff0c\u4f1a\u56e0\\(I_D\\)\u548cMOSFET\u7684\u5bfc\u901a\u7535\u963b\u800c\u4ea7\u751f\u5bfc\u901a\u635f\u8017\u3002<br \/>\n\u5728\u8fdb\u884c\u6d4b\u91cf\u65f6\u6709\u4e00\u4e9b\u6ce8\u610f\u4e8b\u9879\u3002\u7b2c\u4e00\u4e2a\u662f\u793a\u6ce2\u5668\u7684\u91c7\u6837\u7387\u3002\u5982\u679c\u91c7\u6837\u7387\u8fc7\u4f4e\uff0c\u5c31\u4f1a\u6f0f\u6389\u6ce2\u5f62\u7684\u7ec6\u8282\u90e8\u5206\uff0c\u4ece\u800c\u5bfc\u81f4\u6d4b\u91cf\u7ed3\u679c\u51fa\u73b0\u8bef\u5dee\u3002\u56e0\u6b64\u9700\u8981\u663e\u793a\u91c7\u6837\u70b9\u5e76\u786e\u8ba4\u662f\u5426\u662f\u51c6\u786e\u8ddf\u8e2a\u800c\u83b7\u5f97\u7684\u6ce2\u5f62\u3002<\/p>\n<p>\u7b2c\u4e8c\u4e2a\u662f\u5728\u7535\u538b\u63a2\u5934\u548c\u7535\u6d41\u63a2\u5934\u4e4b\u95f4\uff0c\u7531\u4e8e\u5ef6\u8fdf\u65f6\u95f4\u7279\u6027\u4e0d\u540c\uff0c\u6240\u4ee5\u6d4b\u5f97\u7684\u6ce2\u5f62\u4f1a\u56e0\u8fd9\u79cd\u5ef6\u8fdf\u5dee\u800c\u5b58\u5728\u8bef\u5dee\u3002\u5982\u679c\u4e0d\u8fdb\u884c\u4efb\u4f55\u6821\u6b63\uff0c\u7535\u538b\u548c\u7535\u6d41\u4e4b\u95f4\u5c31\u4f1a\u5728\u65f6\u95f4\u8f74\u65b9\u5411\u4e0a\u51fa\u73b0\u504f\u5dee\uff0c\u56fe2\u9634\u5f71\u533a\u57df\u7684\u9762\u79ef\u5c31\u4f1a\u4e0d\u51c6\u786e\uff0c\u4ece\u800c\u5bfc\u81f4\u635f\u8017\u8ba1\u7b97\u51fa\u73b0\u8bef\u5dee\u3002\u8981\u6d88\u9664\u6d4b\u91cf\u8fc7\u7a0b\u4e2d\u7684\u5ef6\u8fdf\u5dee\uff0c\u5c31\u9700\u8981\u5b9e\u65bd\u504f\u5dee\u6821\u51c6\uff08de-skew\uff09\u3002\u5177\u4f53\u65b9\u6cd5\u8bf7\u53c2\u9605\u6d4b\u91cf\u8bbe\u5907\u7684\u4f7f\u7528\u8bf4\u660e\u4e66\u548c\u6d4b\u91cf\u8bbe\u5907\u5236\u9020\u5546\u63d0\u4f9b\u7684\u6280\u672f\u8d44\u6599\u3002<br \/>\n\u9664\u6b64\u4e4b\u5916\uff0c\u5728\u5904\u7406\u6d4b\u91cf\u70b9\u548c\u63a2\u5934\u64cd\u4f5c\u7b49\u65b9\u9762\uff0c\u8bf7\u9075\u5faa\u5bf9\u9ad8\u7535\u538b\u548c\u5927\u7535\u6d41\u8fdb\u884c\u9ad8\u901f\u5f00\u5173\u7684MOSFET\u7684\u6ce2\u5f62\u89c2\u6d4b\u57fa\u672c\u8981\u6c42\u8fdb\u884c\u3002<\/p>\n<h2 id=\"002\">\u901a\u8fc7\u6ce2\u5f62\u7684\u7ebf\u6027\u8fd1\u4f3c\u6cd5\u8ba1\u7b97\u635f\u8017\u7684\u65b9\u6cd5<\/h2>\n<p>\u4e0b\u9762\u5c06\u4ecb\u7ecd\u6839\u636e\u524d\u9762\u6d4b\u5f97\u7684\u5f00\u5173\u6ce2\u5f62\uff0c\u4f7f\u7528\u7ebf\u6027\u8fd1\u4f3c\u6cd5\u6765\u8ba1\u7b97\u529f\u7387\u635f\u8017\u7684\u65b9\u6cd5\u3002\u901a\u8fc7\u5728\u7ebf\u6027\u8fd1\u4f3c\u6709\u6548\u8303\u56f4\u5185\u5bf9\u6240\u6d4b\u5f97\u7684\u6ce2\u5f62\u8fdb\u884c\u5206\u5272\uff0c\u53ef\u4ee5\u8ba1\u7b97\u51fa\u529f\u7387\u635f\u8017\u3002<\/p>\n<h3>\u5f00\u901a\u548c\u5173\u65ad\u533a\u95f4\u7684\u5f00\u5173\u635f\u8017<\/h3>\n<p>\u9996\u5148\uff0c\u8ba1\u7b97\u5f00\u901a\u548c\u5173\u65ad\u65f6\u95f4\u5185\u6d88\u8017\u7684\u529f\u7387\u635f\u8017\\(Pt_{on}\\)\u548c\\(Pt_{off}\\)\u3002\u6ce2\u5f62\u4f7f\u7528\u56fe3\u4e2d\u7684\u793a\u4f8b\u6ce2\u5f62\u3002\u529f\u7387\u635f\u8017\u4f7f\u7528\u88681\u4e2d\u7684\u8fd1\u4f3c\u516c\u5f0f\u6765\u8ba1\u7b97\u3002\u7531\u4e8e\u8ba1\u7b97\u516c\u5f0f\u4f1a\u56e0\u6ce2\u5f62\u7684\u5f62\u72b6\u800c\u6709\u6240\u4e0d\u540c\uff0c\u56e0\u6b64\u8bf7\u9009\u62e9\u63a5\u8fd1\u6d4b\u5f97\u6ce2\u5f62\u7684\u8fd1\u4f3c\u516c\u5f0f\u3002<br \/>\n\u5728\u56fe3\u7684\u6ce2\u5f62\u793a\u4f8b\u4e2d\uff0c\u5f00\u901a\u65f6\u7684\u6ce2\u5f62\u88ab\u5206\u5272\u4e3a\u4e24\u90e8\u5206\uff0c\u524d\u534a\u90e8\u5206\uff08\\(t_{on1}\\)\uff09\u4f7f\u7528\u88681\u4e2d\u7684\u4f8b2\u3002\u53e6\u5916\uff0c\u4f7f\u7528\u516c\u5f0f\\(I_{D1}\u22540\\)\u4f5c\u4e3a\u6761\u4ef6\u3002\u540e\u534a\u90e8\u5206\uff08\\(t_{on2}\\)\uff09\u4f7f\u7528\u4f8b3\u4e2d\u7684\u516c\u5f0f\\(V_{DS2}\u22540\\)\u3002<br \/>\n\u5728\u56fe3\u4e2d\uff0c\u4f1a\u56e0MOSFET\u7684\u5bfc\u901a\u7535\u963b\u548cID\u800c\u4ea7\u751f\u7535\u538b\\(V_{\\mathrm{DS2(on)}}\\)\uff0c\u4f46\u5982\u679c\u8be5\u7535\u538b\u8fdc\u4f4e\u4e8e\u3001\\(V_{DS}\\)\u7684High\u7535\u538b\uff0c\u5c31\u53ef\u4ee5\u89c6\u5176\u4e3a\u96f6\u3002\u7efc\u4e0a\u6240\u8ff0\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e0b\u9762\u7684\u516c\u5f0f\uff081\uff09\u6765\u8fd1\u4f3c\u8ba1\u7b97\u5f00\u901a\u65f6\u7684\u529f\u7387\u635f\u8017\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P_{\\mathrm{ton}}\\approx\\displaystyle \\frac{1}{2}V_{\\mathrm{DS1(on)}}I_{\\mathrm{D2(on)}}t_{\\mathrm{on1}}f\\)<\/span><br \/>\n<span class=\"mathjax-text\">\\(+ \\displaystyle \\frac{1}{6} V_{DS1(\\text{on})} \\left( 2I_{D2(\\text{on})} + I_{D3(\\text{on})} \\right) t_{\\text{on2}} f\\)<\/span> (1)<\/p>\n<p>\u540c\u6837\uff0c\u5c06\u5173\u65ad\u65f6\u7684\u6ce2\u5f62\u4e5f\u5206\u4e3a\u4e24\u90e8\u5206\uff0c\u524d\u534a\u90e8\u5206\uff08\\(t_{\\mathrm{off1}}\\)\uff09\u4f7f\u7528\u88681\u7684\u4f8b1\u4e2d\u7684\u516c\u5f0f\\(V_{DS1}\u22540\\)\uff0c\u540e\u534a\u90e8\u5206\uff08\\(t_{\\mathrm{off2}}\\)\uff09\u4f7f\u7528\u4f8b8\u4e2d\u7684\u516c\u5f0f\\(I_{D2}\u22540\\)\u3002\u5728\u56fe3\u4e2d\uff0c\u7531\u4e8e\u524d\u8ff0\u7684\u539f\u56e0\uff0c\u4f1a\u4ea7\u751f\u7535\u538b\\(V_{\\mathrm{DS1(off)}}\\)\uff0c\u4f46\u5982\u679c\u8be5\u7535\u538b\u8fdc\u4f4e\u4e8e\\(V_{DS}\\)\u7684High\u7535\u538b\uff0c\u5219\u5c06\u5176\u6309\u201c\u96f6\u201d\u5904\u7406\u3002\u8fd9\u6837\uff0c\u5c31\u53ef\u4ee5\u4f7f\u7528\u4e0b\u9762\u7684\u516c\u5f0f\uff082\uff09\u6765\u8fd1\u4f3c\u8ba1\u7b97\u5173\u65ad\u65f6\u7684\u529f\u7387\u635f\u8017\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P_{\\mathrm{toff}}\\approx\\displaystyle \\frac{1}{6}V_{\\mathrm{DS2(off)}}\\left(I_{\\mathrm{D1(off)}}+2I_{\\mathrm{D2(off)}}\\right)t_{\\mathrm{off1}}f\\) <\/span><br \/>\n<span class=\"mathjax-text\">\\(+\\displaystyle \\frac{1}{2}V_{\\mathrm{DS2(off)}}I_{\\mathrm{D2(off)}}t_{\\mathrm{off2}}f\\)<\/span> (2)<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-27600 aligncenter\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2025\/05\/002-1.png\" alt=\"\" width=\"353\" height=\"639\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-27601 aligncenter\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2025\/05\/003-1.png\" alt=\"\" width=\"626\" height=\"928\" \/><\/p>\n<h3>\u5bfc\u901a\u671f\u95f4\u7684\u529f\u7387\u635f\u8017<\/h3>\n<p>\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u6765\u8ba1\u7b97\u5bfc\u901a\u671f\u95f4\u6d88\u8017\u7684\u529f\u7387\u635f\u8017\u3002\u56fe4\u662f\u7528\u6765\u8ba1\u7b97\u5bfc\u901a\u635f\u8017\u7684\u6ce2\u5f62\u793a\u4f8b\u3002\u7531\u4e8e\u5728\\(T_{ON}\\)\u533a\u95f4MOSFET\u662f\u5bfc\u901a\u7684\uff0c\u56e0\u6b64\u3001\\(V_{DS}\\)\u662fMOSFET\u5bfc\u901a\u7535\u963b\u548c\\(I_D\\)\u7684\u4e58\u79ef\u3002\u6709\u5173\u5bfc\u901a\u7535\u963b\u7684\u503c\uff0c\u8bf7\u53c2\u9605\u6280\u672f\u89c4\u683c\u4e66\u3002\u9700\u8981\u4ece\u88682\u4e2d\u9009\u62e9\u63a5\u8fd1\u8be5\u6ce2\u5f62\u5f62\u72b6\u7684\u4f8b\u5b50\u5e76\u4f7f\u7528\u5176\u8fd1\u4f3c\u516c\u5f0f\u6765\u8ba1\u7b97\u529f\u7387\u635f\u8017\u3002<\/p>\n<p>\u5728\u672c\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u88682\u4e2d\u7684\u4f8b1\u3002MOSFET\u5bfc\u901a\u671f\u95f4\u7684\u5bfc\u901a\u635f\u8017\u53ef\u4ee5\u7528\u4e0b\u9762\u7684\u516c\u5f0f\uff083\uff09\u6765\u8ba1\u7b97\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P_{\\mathrm{ON}}\\approx\\displaystyle \\frac{1}{3}R_{\\mathrm{ON}}\\left(I_{\\mathrm{D1(ON)}}^2+I_{\\mathrm{D1(ON)}}I_{\\mathrm{D2(ON)}}+I_{\\mathrm{D2(ON)}}^2\\right)T_{\\mathrm{ON}}f\\)<\/span> (3)<\/p>\n<p>MOSFET\u5173\u65ad\u65f6\u7684\u529f\u7387\u635f\u8017\u5728\u56fe4\u4e2d\u4f4d\u4e8e\\(T_{OFF}\\)\u533a\u95f4\uff0c\u7531\u4e8eMOSFET\u5173\u65ad\u65f6\u7684\\(I_D\\)\u8db3\u591f\u5c0f\uff0c\u56e0\u6b64\u5c06\u529f\u7387\u635f\u8017\u89c6\u4e3a\u96f6\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-27602 aligncenter\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2025\/05\/004-1.png\" alt=\"\" width=\"281\" height=\"442\" \/><br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"wp-image-27603 aligncenter\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2025\/05\/005-1.png\" alt=\"\" width=\"700\" height=\"323\" \/><\/p>\n<h3>\u603b\u635f\u8017<\/h3>\n<p>\u5982\u516c\u5f0f\uff084\uff09\u6240\u793a\uff0cMOSFET\u5f00\u5173\u5de5\u4f5c\u65f6\u7684\u603b\u529f\u7387\u635f\u8017\u4e3a\u6b64\u524d\u8ba1\u7b97\u51fa\u7684\u5f00\u5173\u635f\u8017\u548c\u5bfc\u901a\u635f\u8017\u4e4b\u548c\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P_D = P_{ton} + P_{toff} + P_{ON} \\, [\\mathrm{W}] \\)<\/span> (4)<\/p>\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u88681\u548c\u88682\u4e2d\u7684\u6bcf\u4e2a\u4f8b\u5b50\u90fd\u6709\u201c\u53c2\u89c1\u9644\u5f55\u201d\u7684\u6ce8\u91ca\uff0c\u5728\u9644\u5f55\u4e2d\u6709\u6bcf\u4e2a\u4f8b\u5b50\u7684\u8be6\u7ec6\u8ba1\u7b97\u793a\u4f8b\u3002\u5404\u8ba1\u7b97\u793a\u4f8b\u5c06\u4f1a\u5728\u540e\u7eed\u7684\u201c\u5404\u79cd\u6ce2\u5f62\u7684\u5f00\u5173\u635f\u8017\u8ba1\u7b97\u793a\u4f8b\u201d\u548c\u201c\u5404\u79cd\u6ce2\u5f62\u7684\u5bfc\u901a\u635f\u8017\u8ba1\u7b97\u793a\u4f8b\u201d\u4e2d\u51fa\u73b0\u3002<\/p>\n<h2 id=\"003\">\u6839\u636e\u6d4b\u5f97\u6ce2\u5f62\u8ba1\u7b97\u529f\u7387\u635f\u8017\u793a\u4f8b<\/h2>\n<p>\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u4f7f\u7528\u201c\u901a\u8fc7\u6ce2\u5f62\u7684\u7ebf\u6027\u8fd1\u4f3c\u5206\u5272\u6765\u8ba1\u7b97\u635f\u8017\u7684\u65b9\u6cd5\u201d\uff0c\u6839\u636e\u6240\u6d4b\u5f97\u7684\u6ce2\u5f62\u6765\u8ba1\u7b97\u529f\u7387\u635f\u8017\uff08\u793a\u4f8b\uff09\u3002<\/p>\n<p>\u4e0b\u9762\u6211\u4eec\u901a\u8fc7\u793a\u4f8b\uff0c\u6765\u6839\u636e\u5b9e\u9645\u6d4b\u5f97\u7684\u5f00\u5173\u6ce2\u5f62\u8ba1\u7b97\u529f\u7387\u635f\u8017\u3002\u56fe5\u662f\u5b9e\u6d4b\u7684\u5f00\u5173\u6ce2\u5f62\uff0c\u663e\u793a\u4e86\u53cd\u590d\u8fdb\u884cON\/OFF\u65f6\u7684\u6574\u4f53\u60c5\u51b5\u3002\u6ce2\u5f62\u56fe\u4e2d\u4e0a\u65b9\u662f\\(I_D\\)\u7684\u6ce2\u5f62\uff0c\u4e0b\u65b9\u662f\\(V_{DS}\\)\u7684\u6ce2\u5f62\u3002\u4e0b\u9762\u6211\u4eec\u6839\u636e\u8be5\u6ce2\u5f62\uff0c\u6765\u5206\u522b\u8ba1\u7b97\u5f00\u901a\uff08\u5f00\u5173\u63a5\u901a\uff09\u65f6\u3001\u5bfc\u901a\u65f6\uff08\u5bfc\u901a\u72b6\u6001\uff09\u548c\u5173\u65ad\uff08\u5f00\u5173\u5173\u95ed\uff09\u65f6\u7684\u635f\u8017\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-27604 aligncenter\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2025\/05\/006-1.png\" alt=\"\" width=\"314\" height=\"761\" \/><\/p>\n<h3>\u5f00\u901a\u65f6\u7684\u635f\u8017\u8ba1\u7b97<\/h3>\n<p>\u56fe6\u662f\u56fe5\u4e2d\u5f00\u901a\u65f6\u7684\u6ce2\u5f62\u653e\u5927\u56fe\uff0c\u9700\u8981\u4f7f\u7528\\(I_D\\)\uff08\u4e0a\uff09\u548c\\(V_{DS}\\)\uff08\u4e0b\uff09\u6765\u8ba1\u7b97\u635f\u8017\u3002\u7531\u4e8e\u5728\u6ce2\u5f62\u8fc7\u7a0b\u4e2d\u7684\u659c\u7387\u53d1\u751f\u4e86\u53d8\u5316\uff0c\u56e0\u6b64\u9700\u8981\u6309\u76f8\u540c\u7684\u659c\u7387\u6765\u5206\u5272\u533a\u95f4\uff0c\u4f46\u7531\u4e8e\u6ce2\u5f62\u5f88\u590d\u6742\uff0c\u56e0\u6b64\u533a\u95f4\u5206\u5272\u662f\u4e3b\u89c2\u7684\u3002\u8bfb\u53d6\u6bcf\u4e2a\u533a\u95f4\u7684\u8d77\u59cb\u7535\u538b\u548c\u7535\u6d41\u3001\u7ec8\u6b62\u7535\u538b\u548c\u7535\u6d41\u4ee5\u53ca\u65f6\u95f4\u3002<\/p>\n<p>\u5c06\u503c\u4ee3\u5165\u201c\u901a\u8fc7\u6ce2\u5f62\u7684\u7ebf\u6027\u8fd1\u4f3c\u5206\u5272\u6765\u8ba1\u7b97\u635f\u8017\u7684\u65b9\u6cd5\u201d\u4e2d\u7684\u88681\u4e2d\u5217\u51fa\u7684\u516c\u5f0f\uff08A\uff09\uff0c\u6c42\u51fa\u529f\u7387\u635f\u8017\u3002\u5728\u8fd9\u4e4b\u540e\u6211\u4eec\u90fd\u5c06\u6309\u7167\u88681\u4e2d\u7ed9\u51fa\u7684\u516c\u5f0f\u8fdb\u884c\u8ba1\u7b97\uff0c\u6240\u4ee5\u8bf7\u60a8\u53c2\u8003\u88681\u9605\u8bfb\u4e0b\u9762\u7684\u5185\u5bb9\u3002\u56fe6\u53f3\u4fa7\u662f\u5f00\u5173\u5f00\u901a\u65f6\u7684\u529f\u7387\u635f\u8017\u8ba1\u7b97\u793a\u4f8b\u3002\u5728\u8fd9\u91cc\u5c06\u5206\u5272\u7684\u533a\u95f4\u547d\u540d\u4e3at1\uff5et5\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-27605 aligncenter\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2025\/05\/007-1.png\" alt=\"\" width=\"649\" height=\"664\" \/><br \/>\n\u5982\u6700\u540e\u4e00\u4e2a\u516c\u5f0f\\(Pt_{on}\\)\u6240\u793a\uff0c\u5f00\u901a\u65f6\u7684\u635f\u8017\u662f\u5206\u5272\u533a\u95f4t1\uff5et5\u635f\u8017\u7684\u603b\u548c\u3002<\/p>\n<h3>\u5bfc\u901a\u65f6\u7684\u635f\u8017\u8ba1\u7b97<\/h3>\n<p>\u56fe7\u662f\u5bfc\u901a\u65f6\u7684\u653e\u5927\u6ce2\u5f62\u3002\u5bfc\u901a\u65f6\u7684\u635f\u8017\u8ba1\u7b97\u4e5f\u662f\u4e00\u6837\uff0c\u901a\u8fc7\u5c06\u503c\u5e26\u5165\u201c\u901a\u8fc7\u6ce2\u5f62\u7684\u7ebf\u6027\u8fd1\u4f3c\u5206\u5272\u6765\u8ba1\u7b97\u635f\u8017\u7684\u65b9\u6cd5\u201d\u4e2d\u7684\u88682\u4e2d\u7684\u516c\u5f0f\uff08E\uff09\u6765\u8ba1\u7b97\u3002\u5173\u4e8eSiC MOSFET\u7684\u5bfc\u901a\u7535\u963b\uff0c\u9700\u8981\u4f7f\u7528\u6280\u672f\u89c4\u683c\u4e66\u4e2d\u7ed9\u51fa\u7684\u6700\u5927\u503c\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-27606 aligncenter\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2025\/05\/008-1.png\" alt=\"\" width=\"566\" height=\"561\" \/><\/p>\n<h3>\u5173\u65ad\u65f6\u7684\u635f\u8017\u8ba1\u7b97<\/h3>\n<p>\u56fe8\u662f\u5173\u65ad\u65f6\u7684\u6ce2\u5f62\u653e\u5927\u56fe\u3002\u5173\u65ad\u65f6\u7684\u635f\u8017\u8ba1\u7b97\u65b9\u6cd5\u4e0e\u5f00\u901a\u65f6\u7684\u76f8\u540c\uff0c\u5c06\u503c\u4ee3\u5165\u88681\u4e2d\u7684\u516c\u5f0f\uff08A\uff09\u6765\u8ba1\u7b97\u3002\u5728\u8fd9\u91cc\u5c06\u5206\u5272\u7684\u533a\u95f4\u547d\u540d\u4e3at1\uff5et8\u3002\u56fe\u4e2d\u7ed9\u51fa\u4e86\u5173\u65ad\u65f6\u6bcf\u4e2a\u533a\u95f4\u7684\u635f\u8017\u8ba1\u7b97\u7ed3\u679c\u4ee5\u53ca\u5173\u65ad\u65f6\u7684\u635f\u8017\uff08\\(Pt_{off}\\)\uff1d\u5404\u533a\u95f4\u7684\u635f\u8017\u4e4b\u548c\uff09\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-27607 aligncenter\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2025\/05\/009-1.png\" alt=\"\" width=\"569\" height=\"568\" \/><\/p>\n<h3>\u603b\u529f\u7387\u635f\u8017\u7684\u8ba1\u7b97<\/h3>\n<p>\u603b\u529f\u7387\u635f\u8017\u53ef\u4ee5\u901a\u8fc7\u4e0b\u9762\u7684\u516c\u5f0f\u8ba1\u7b97\u3002\u5982\u516c\u5f0f\u6240\u793a\uff0c\u603b\u529f\u7387\u635f\u8017\u662f\u4e0a\u9762\u6c42\u5f97\u7684\u5f00\u901a\u635f\u8017\u3001\u5bfc\u901a\u635f\u8017\u548c\u5173\u65ad\u635f\u8017\u4e4b\u548c\u3002<\/p>\n<p><span class=\"mathjax-text\"><br \/>\n\\(P = P_{\\mathrm{ton}} + P_{\\mathrm{ON}} + P_{\\mathrm{toff}} \\\\<br \/>\n= 114.8 + 16.7 + 63.8 \\\\<br \/>\n= 195.3 \\, \\left[\\mathrm{W}\\right]\\)<br \/>\n<\/span><\/p>\n<h2 id=\"004\">\u5404\u79cd\u6ce2\u5f62\u7684\u5f00\u5173\u635f\u8017\u8ba1\u7b97\u793a\u4f8b<\/h2>\n<p>\u5728\u201c\u6839\u636e\u6d4b\u5f97\u6ce2\u5f62\u8ba1\u7b97\u529f\u7387\u635f\u8017\u793a\u4f8b\u201d\u4e2d\uff0c\u4f5c\u4e3a\u793a\u4f8b\uff0c\u6211\u4eec\u5c06\u5b9e\u6d4b\u6ce2\u5f62\u5728\u7ebf\u6027\u8fd1\u4f3c\u6709\u6548\u8303\u56f4\u5185\u8fdb\u884c\u5206\u5272\uff0c\u5e76\u4f7f\u7528\u201c\u901a\u8fc7\u6ce2\u5f62\u7684\u7ebf\u6027\u8fd1\u4f3c\u5206\u5272\u6765\u8ba1\u7b97\u635f\u8017\u7684\u65b9\u6cd5\u201d\u4e2d\u76f8\u5e94\u7684\u516c\u5f0f\uff0c\u8ba1\u7b97\u4e86\u5f00\u5173\u635f\u8017\u548c\u5bfc\u901a\u635f\u8017\uff0c\u5e76\u8ba1\u7b97\u4e86\u603b\u635f\u8017\u3002<\/p>\n<p>\u4ece\u672c\u6587\u5f00\u59cb\uff0c\u6211\u4eec\u5c06\u5229\u7528\u201c\u901a\u8fc7\u6ce2\u5f62\u7684\u7ebf\u6027\u8fd1\u4f3c\u5206\u5272\u6765\u8ba1\u7b97\u635f\u8017\u7684\u65b9\u6cd5\u201d\u7684\u88681\u4e2d\u7ed9\u51fa\u7684\u6240\u6709\u57fa\u4e8e\u7ebf\u6027\u8fd1\u4f3c\u5206\u5272\u6765\u8ba1\u7b97\u5f00\u5173\u635f\u8017\u7684\u516c\u5f0f\uff0c\u8ba1\u7b971\uff5e9\u79cd\u60c5\u51b5\uff08\u9644\u5f55A\uff5eI\uff09\u4e0b\u7684\u5f00\u5173\u635f\u8017\uff08\u793a\u4f8b\uff09\u3002\u5bf9\u4e8e\u4f7f\u7528\u201c\u6839\u636e\u6d4b\u5f97\u6ce2\u5f62\u8ba1\u7b97\u529f\u7387\u635f\u8017\u793a\u4f8b\u201d\u4e2d\u6ca1\u6709\u7684\u516c\u5f0f\u8ba1\u7b97\u5f00\u5173\u635f\u8017\u7684\u60c5\u51b5\uff0c\u8bf7\u53c2\u8003\u4e0b\u9762\u7684\u94fe\u63a5\u3002\u53e6\u5916\uff0c\u4f7f\u7528\u88682\u6240\u793a\u7684\u7ebf\u6027\u8fd1\u4f3c\u5206\u5272\u65b9\u6cd5\u6765\u8ba1\u7b97\u5bfc\u901a\u635f\u8017\u7684\u516c\u5f0f\u8fdb\u884c\u8ba1\u7b97\u7684\u793a\u4f8b\uff0c\u4f1a\u53e6\u884c\u53d1\u5e03\uff0c\u5c4a\u65f6\u8bf7\u4e00\u5e76\u53c2\u9605\u3002<\/p>\n<p><strong>\u5404\u79cd\u6ce2\u5f62\u7684\u5f00\u5173\u635f\u8017\u8ba1\u7b97\u793a\u4f8b<\/strong><\/p>\n<ul>\n<li>\u4f8b1\uff1a\\(I_D\\)\u4e0a\u5347\u3001\\(V_{DS}\\)\u4e0a\u5347\u6ce2\u5f62\uff08\u9644\u5f55A\uff09<\/li>\n<li>\u4f8b2\uff1a\\(I_D\\)\u4e0a\u5347\u3001\\(V_{DS}\\)\u6052\u5b9a\u6ce2\u5f62\uff08\u9644\u5f55B\uff09<\/li>\n<li>\u4f8b3\uff1a\\(I_D\\)\u4e0a\u5347\u3001\\(V_{DS}\\)\u4e0b\u964d\u6ce2\u5f62\uff08\u9644\u5f55C\uff09<\/li>\n<li>\u4f8b4\uff1a\\(I_D\\)\u6052\u5b9a\u3001\\(V_{DS}\\)\u4e0a\u5347\u6ce2\u5f62\uff08\u9644\u5f55D\uff09<\/li>\n<li>\u4f8b5\uff1a\\(I_D\\)\u6052\u5b9a\u3001\\(V_{DS}\\)\u6052\u5b9a\u6ce2\u5f62\uff08\u9644\u5f55E\uff09<\/li>\n<li>\u4f8b6\uff1a\\(I_D\\)\u6052\u5b9a\u3001\\(V_{DS}\\)\u4e0b\u964d\u6ce2\u5f62\uff08\u9644\u5f55F\uff09<\/li>\n<li>\u4f8b7\uff1a\\(I_D\\)\u4e0b\u964d\u3001\\(V_{DS}\\)\u4e0a\u5347\u6ce2\u5f62\uff08\u9644\u5f55G\uff09<\/li>\n<li>\u4f8b8\uff1a\\(I_D\\)\u4e0b\u964d\u3001\\(V_{DS}\\)\u6052\u5b9a\u6ce2\u5f62\uff08\u9644\u5f55H\uff09<\/li>\n<li>\u4f8b9\uff1a\\(I_D\\)\u4e0b\u964d\u3001\\(V_{DS}\\)\u4e0b\u964d\u6ce2\u5f62\uff08\u9644\u5f55I\uff09<\/li>\n<\/ul>\n<h3>\u5404\u79cd\u6ce2\u5f62\u7684\u5f00\u5173\u635f\u8017\u8ba1\u7b97\u793a\u4f8b\uff1a\u4f8b1\uff1a\\(I_D\\)\u4e0a\u5347\u3001\\(V_{DS}\\)\u4e0a\u5347\u6ce2\u5f62\uff08\u9644\u5f55A\uff09<\/h3>\n<p>\u4e0b\u9762\u6211\u4eec\u6839\u636e\u5f00\u5173\u6ce2\u5f62\u7684\u6f0f-\u6e90\u7535\u538b\\(V_{DS}\\)\u548c\u6f0f\u6781\u7535\u6d41\\(I_D\\)\uff0c\u4f7f\u7528\u7ebf\u6027\u8fd1\u4f3c\u65b9\u5f0f\u8ba1\u7b97\u5f00\u901a\u65f6\u548c\u5173\u65ad\u65f6\u7684\u529f\u7387\u635f\u8017\uff08\u5f00\u5173\u635f\u8017\uff09\u3002\u56feA-1\u662f\u7528\u4e8e\u635f\u8017\u8ba1\u7b97\u7684\u6ce2\u5f62\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-27610 aligncenter\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2025\/05\/010-1.png\" alt=\"\" width=\"257\" height=\"383\" \/><\/p>\n<p>\u56feA-1\u4e2d0-t1\u671f\u95f4\u7684\u529f\u7387\u635f\u8017\\(P\\)\uff0c\u901a\u5e38\u53ef\u4ee5\u901a\u8fc7\u5bf9\u516c\u5f0f\uff08A-1\uff09\u4e2d\u7684\u7535\u6d41\u548c\u7535\u538b\u4e4b\u79ef\u8fdb\u884c\u79ef\u5206\u6765\u8ba1\u7b97\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P = f \\int_{0}^{t_1} I_D(t) V_{\\mathrm{DS}}(t) \\, dt\\)<\/span> \uff08A-1\uff09<\/p>\n<p>\u5176\u4e2d\uff0c\\(f\\)\uff1a\u5f00\u5173\u9891\u7387\uff3bHz\uff3d<\/p>\n<p>\u53e6\u5916\uff0c\\(I_{D(t)}\\)\u548c\\(V_{DS(t)}\\)\u53ef\u6839\u636e\u56feA-1\u4e2d\u7684\u659c\u7387\uff0c\u7528\u516c\u5f0f\uff08A-2\uff09\u548c\u516c\u5f0f\uff08A-3\uff09\u6765\u8868\u793a\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(I_D\\left(t\\right)=I_{D1}+\\displaystyle \\frac{I_{D2}-I_{D1}}{t_1}t=I_{D1}-\\displaystyle \\frac{I_{D1}-I_{D2}}{t_1}t\\)<\/span> \uff08A-2\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(V_{\\mathrm{DS}}\\left(t\\right)=V_{\\mathrm{DS1}}+\\displaystyle \\frac{V_{\\mathrm{DS2}}-V_{\\mathrm{DS1}}}{t_1}t=V_{\\mathrm{DS1}}-\\displaystyle \\frac{V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}}{t_1}t\\)<\/span> \uff08A-3\uff09<\/p>\n<p>\u5c06\u516c\u5f0f\uff08A-2\uff09\u548c\u516c\u5f0f\uff08A-3\uff09\u4ee3\u5165\u516c\u5f0f\uff08A-1\uff09\uff0c<\/p>\n<p><span class=\"mathjax-text\">\\(P=f\\int_{0}^{t_1}\\left(I_{D1}-\\displaystyle \\frac{I_{D1}-I_{D2}}{t_1}t\\right)\\left(V_{\\mathrm{DS1}}-\\displaystyle \\frac{V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}}{t_1}t\\right)dt\\)<\/span> \uff08A-4\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=f\\int_{0}^{t_1}\\left(V_{\\mathrm{DS1}}I_{D1}-\\displaystyle \\frac{I_{D1}\\left(V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}\\right)+V_{\\mathrm{DS1}}\\left(I_{D1}-I_{D2}\\right)}{t_1}t+\\displaystyle \\frac{\\left(V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}\\right)\\left(I_{D1}-I_{D2}\\right)}{t_1^2}t^2\\right)dt\\)<\/span> \uff08A-5\uff09<\/p>\n<p>\u6839\u636e\u516c\u5f0f\u8fdb\u884c\u79ef\u5206\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P=f\\left[V_{\\mathrm{DS1}}I_{D1}t-\\displaystyle \\frac{1}{2}\\displaystyle \\frac{I_{D1}\\left(V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}\\right){+V}_{\\mathrm{DS1}}\\left(I_{D1}-I_{D2}\\right)}{t_1}t^2+\\displaystyle \\frac{1}{3}\\displaystyle \\frac{\\left(V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}\\right)\\left(I_{D1}-I_{D2}\\right)}{t_1^2}t^3\\right]_0^{t_1}\\)<\/span> \uff08A-6\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=f\\left[V_{\\mathrm{DS1}}I_{D1}t_1-\\displaystyle \\frac{1}{2}\\displaystyle \\frac{I_{D1}\\left(V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}\\right){+V}_{\\mathrm{DS1}}\\left(I_{D1}-I_{D2}\\right)}{t_1}t_1^2+\\displaystyle \\frac{1}{3}\\displaystyle \\frac{\\left(V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}\\right)\\left(I_{D1}-I_{D2}\\right)}{t_1^2}t_1^3\\right]\\)<\/span> \uff08A-7\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=f\\left[V_{\\mathrm{DS1}}I_{D1}t_1-\\displaystyle \\frac{1}{2}\\left(I_{D1}\\left(V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}\\right)+V_{\\mathrm{DS1}}\\left(I_{D1}-I_{D2}\\right)\\right)t_1+\\displaystyle \\frac{1}{3}\\left(V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}\\right)\\left(I_{D1}-I_{D2}\\right)t_1\\right]\\)<\/span> \uff08A-8\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(= \\left[ \\displaystyle \\frac{1}{3} (V_{DS1} \u2013 V_{DS2})(I_{D1} \u2013 I_{D2}) \u2013 \\displaystyle \\frac{1}{2} I_{D1} (V_{DS1} \u2013 V_{DS2}) \u2013 \\displaystyle \\frac{1}{2} V_{DS1} (I_{D1} \u2013 I_{D2}) + V_{DS1} I_{D1} \\right] t_1 f\\)<\/span> \uff08A-9\uff09<\/p>\n<p>\u5176\u4e2d\uff0c\\(f\\)\uff1a\u5f00\u5173\u9891\u7387\uff3bHz\uff3d<\/p>\n<p>\u6c42\u4e0b\u5217\u6761\u4ef6\u4e0b\u7684\u529f\u7387\u635f\u8017\u3002<\/p>\n<p><span class=\"mathjax-text\">\u30fb\\(\\underline{V_{DS1}\u22540}\\)<\/span> \uff08A-10\uff09<\/p>\n<p>\u5c06\u516c\u5f0f\uff08A-10\uff09\u4ee3\u5165\u516c\u5f0f\uff08A-9\uff09\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P=\\left[\\displaystyle \\frac{1}{3}\\left(0-V_{\\mathrm{DS2}}\\right)\\left(I_{D1}-I_{D2}\\right)-\\displaystyle \\frac{1}{2}I_{D1}\\left(0-V_{\\mathrm{DS2}}\\right)-\\displaystyle \\frac{1}{2}\\times0\\left(I_{D1}-I_{D2}\\right)+0\\times I_{D1}\\right]t_1f\\)<\/span> \uff08A-11\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=\\left[-\\displaystyle \\frac{1}{3}V_{\\mathrm{DS2}}\\left(I_{D1}-I_{D2}\\right)+\\displaystyle \\frac{1}{2}I_{D1}V_{\\mathrm{DS2}}\\right]t_1f\\)<\/span> \uff08A-12\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(= \\displaystyle \\frac{1}{6} V_{DS2} (I_{D1} + 2I_{D2}) t_1 f \\, [W]\\)<\/span> \uff08A-13\uff09<\/p>\n<p><span class=\"mathjax-text\">\u30fb\\(\\underline{I_{D1}\u22540}\\)<\/span> \uff08A-14\uff09<\/p>\n<p>\u5c06\u516c\u5f0f\uff08A-14\uff09\u4ee3\u5165\u516c\u5f0f\uff08A-9\uff09\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P=\\left[\\displaystyle \\frac{1}{3}\\left(V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}\\right)\\left(0-I_{D2}\\right)-\\displaystyle \\frac{1}{2}\\times0\\left(V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}\\right)-\\displaystyle \\frac{1}{2}V_{\\mathrm{DS1}}\\left(0-I_{D2}\\right)+V_{\\mathrm{DS1}}\\times0\\right]t_1f\\)<\/span> \uff08A-15\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=\\left[\\displaystyle \\frac{1}{3}\\left(V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}\\right)\\left(-I_{D2}\\right)+\\displaystyle \\frac{1}{2}V_{\\mathrm{DS1}}I_{D2}\\right]t_1f\\)<\/span> \uff08A-16\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(= \\displaystyle \\frac{1}{6} (V_{DS1} + 2V_{DS2}) I_{D2} t_1 f \\, [W] \\)<\/span> \uff08A-17\uff09<\/p>\n<h3>\u5404\u79cd\u6ce2\u5f62\u7684\u5f00\u5173\u635f\u8017\u8ba1\u7b97\u793a\u4f8b\uff1a\u4f8b2\uff1aID\u4e0a\u5347\u3001VDS\u6052\u5b9a\u6ce2\u5f62\uff08\u9644\u5f55B\uff09<\/h3>\n<p>\u4e0b\u9762\u6211\u4eec\u6839\u636e\u5f00\u5173\u6ce2\u5f62\u7684\u6f0f-\u6e90\u7535\u538b\\(V_{DS}\\)\u548c\u6f0f\u6781\u7535\u6d41\\(I_D\\)\uff0c\u4f7f\u7528\u7ebf\u6027\u8fd1\u4f3c\u65b9\u5f0f\u8ba1\u7b97\u5f00\u901a\u65f6\u548c\u5173\u65ad\u65f6\u7684\u529f\u7387\u635f\u8017\uff08\u5f00\u5173\u635f\u8017\uff09\u3002\u56feB-1\u662f\u7528\u4e8e\u635f\u8017\u8ba1\u7b97\u7684\u6ce2\u5f62\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-27611 aligncenter\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2025\/05\/011-1.png\" alt=\"\" width=\"287\" height=\"335\" \/><br \/>\n\u56feB-1\u4e2d0-t1\u671f\u95f4\u7684\u529f\u7387\u635f\u8017\\(P\\)\uff0c\u901a\u5e38\u53ef\u4ee5\u901a\u8fc7\u5bf9\u516c\u5f0f\uff08B-1\uff09\u4e2d\u7684\u7535\u6d41\u548c\u7535\u538b\u4e4b\u79ef\u8fdb\u884c\u79ef\u5206\u6765\u8ba1\u7b97\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P = f \\int_{0}^{t_1} I_D (t) V_{DS} (t) \\, dt\\)<\/span> \uff08B-1\uff09<\/p>\n<p>\u5176\u4e2d\uff0c\\(f\\)\uff1a\u5f00\u5173\u9891\u7387\uff3bHz\uff3d<\/p>\n<p>\u53e6\u5916\uff0c\\(I_{D(t)}\\)\u548c\\(V_{DS(t)}\\)\u53ef\u6839\u636e\u56feB-1\u4e2d\u7684\u659c\u7387\uff0c\u7528\u516c\u5f0f\uff08B-2\uff09\u548c\u516c\u5f0f\uff08B-3\uff09\u6765\u8868\u793a\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(I_D\\left(t\\right)=I_{D1}+\\displaystyle \\frac{I_{D2}-I_{D1}}{t_1}t=I_{D1}-\\displaystyle \\frac{I_{D1}-I_{D2}}{t_1}t\\)<\/span> \uff08B-2\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(V_{\\mathrm{DS}}\\left(t\\right)=V_{\\mathrm{DS1}}\\)<\/span> \uff08B-3\uff09<\/p>\n<p>\u5c06\u516c\u5f0f\uff08B-2\uff09\u548c\u516c\u5f0f\uff08B-3\uff09\u4ee3\u5165\u516c\u5f0f\uff08B-1\uff09\uff0c<\/p>\n<p><span class=\"mathjax-text\">\\(P = f \\int_{0}^{t_1} \\left( I_{D1} \u2013 \\displaystyle \\frac{I_{D1} \u2013 I_{D2}}{t_1} t \\right) (V_{DS1}) \\, dt\\)<\/span> \uff08B-4\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(= f \\int_{0}^{t_1} \\left( V_{DS1} I_{D1} \u2013 \\displaystyle \\frac{V_{DS1} (I_{D1} \u2013 I_{D2})}{t_1} t \\right) dt\\)<\/span> \uff08B-5\uff09<\/p>\n<p>\u6839\u636e\u516c\u5f0f\u8fdb\u884c\u79ef\u5206\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P=f\\left[V_{\\mathrm{DS1}}I_{D1}t-\\displaystyle \\frac{1}{2}\\displaystyle \\frac{V_{\\mathrm{DS1}}\\left(I_{D1}-I_{D2}\\right)}{t_1}t^2\\right]_0^{t_1}\\)<\/span> \uff08B-6\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=f\\left[V_{\\mathrm{DS1}}I_{D1}t_1-\\displaystyle \\frac{1}{2}\\displaystyle \\frac{V_{\\mathrm{DS1}}\\left(I_{D1}-I_{D2}\\right)}{t_1}t_1^2\\right]\\)<\/span> \uff08B-7\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=f\\left[V_{\\mathrm{DS1}}I_{D1}t_1-\\displaystyle \\frac{1}{2}\\left(V_{\\mathrm{DS1}}\\left(I_{D1}-I_{D2}\\right)\\right)t_1\\right]\\)<\/span> \uff08B-8\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(= \\displaystyle \\frac{1}{2} V_{DS1} (I_{D1} + I_{D2}) t_1 f \\, [W]\\)<\/span> \uff08B-9\uff09<\/p>\n<p>\u6c42\u4e0b\u5217\u6761\u4ef6\u4e0b\u7684\u529f\u7387\u635f\u8017\u3002<\/p>\n<p><span class=\"mathjax-text\">\u30fb\\(\\underline{I_{D1}\u22540}\\)<\/span> \uff08B-10\uff09<\/p>\n<p>\u5c06\u516c\u5f0f\uff08B-10\uff09\u4ee3\u5165\u516c\u5f0f\uff08B-9\uff09\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P = \\displaystyle \\frac{1}{2} V_{DS1} I_{D2} t_1 f \\, [W]\\)<\/span> \uff08B-11\uff09<\/p>\n<h3>\u5404\u79cd\u6ce2\u5f62\u7684\u5f00\u5173\u635f\u8017\u8ba1\u7b97\u793a\u4f8b\uff1a\u4f8b3\uff1a\\(I_D\\)\u4e0a\u5347\u3001\\(V_{DS}\\)\u4e0b\u964d\u6ce2\u5f62\uff08\u9644\u5f55C\uff09<\/h3>\n<p>\u4e0b\u9762\u6211\u4eec\u6839\u636e\u5f00\u5173\u6ce2\u5f62\u7684\u6f0f-\u6e90\u7535\u538b\\(V_{DS}\\)\u548c\u6f0f\u6781\u7535\u6d41\\(I_D\\)\uff0c\u4f7f\u7528\u7ebf\u6027\u8fd1\u4f3c\u65b9\u5f0f\u8ba1\u7b97\u5f00\u901a\u65f6\u548c\u5173\u65ad\u65f6\u7684\u529f\u7387\u635f\u8017\uff08\u5f00\u5173\u635f\u8017\uff09\u3002\u56feC-1\u662f\u7528\u4e8e\u635f\u8017\u8ba1\u7b97\u7684\u6ce2\u5f62\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-27612 aligncenter\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2025\/05\/012-1.png\" alt=\"\" width=\"284\" height=\"302\" \/><\/p>\n<p>\u56feC-1\u4e2d0-t1\u671f\u95f4\u7684\u529f\u7387\u635f\u8017\\(P\\)\uff0c\u901a\u5e38\u53ef\u4ee5\u901a\u8fc7\u5bf9\u516c\u5f0f\uff08C-1\uff09\u4e2d\u7684\u7535\u6d41\u548c\u7535\u538b\u4e4b\u79ef\u8fdb\u884c\u79ef\u5206\u6765\u8ba1\u7b97\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P = f \\int_{0}^{t_1} I_D (t) V_{DS} (t) \\, dt\\)<\/span> \uff08C-1\uff09<\/p>\n<p>\u5176\u4e2d\uff0c\\(f\\)\uff1a\u5f00\u5173\u9891\u7387\uff3bHz\uff3d<br \/>\n\u53e6\u5916\uff0c\\(I_{D(t)}\\)\u548c\\(V_{DS(t)}\\)\u53ef\u6839\u636e\u56feC-1\u4e2d\u7684\u659c\u7387\uff0c\u7528\u516c\u5f0f\uff08C-2\uff09\u548c\u516c\u5f0f\uff08C-3\uff09\u6765\u8868\u793a\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(I_D\\left(t\\right)=I_{D1}+\\displaystyle \\frac{I_{D2}-I_{D1}}{t_1}t=I_{D1}-\\displaystyle \\frac{I_{D1}-I_{D2}}{t_1}t\\)<\/span> \uff08C-2\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(V_{\\mathrm{DS}}\\left(t\\right)=V_{\\mathrm{DS1}}-\\displaystyle \\frac{V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}}{t_1}t\\)<\/span> \uff08C-3\uff09<\/p>\n<p>\u5c06\u516c\u5f0f\uff08C-2\uff09\u548c\u516c\u5f0f\uff08C-3\uff09\u4ee3\u5165\u516c\u5f0f\uff08C-1\uff09\uff0c<\/p>\n<p><span class=\"mathjax-text\">\\(P=f\\int_{0}^{t_1}\\left(I_{D1}-\\displaystyle \\frac{I_{D1}-I_{D2}}{t_1}t\\right)\\left(V_{\\mathrm{DS1}}-\\displaystyle \\frac{V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}}{t_1}t\\right)dt\\)<\/span> \uff08C-4\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=f\\int_{0}^{t_1}\\left(V_{\\mathrm{DS1}}I_{D1}-\\displaystyle \\frac{I_{D1}\\left(V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}\\right){+V}_{\\mathrm{DS1}}\\left(I_{D1}-I_{D2}\\right)}{t_1}t+\\displaystyle \\frac{\\left(V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}\\right)\\left(I_{D1}-I_{D2}\\right)}{t_1^2}t^2\\right)dt\\)<\/span> \uff08C-5\uff09<\/p>\n<p>\u6839\u636e\u516c\u5f0f\u8fdb\u884c\u79ef\u5206\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P=f\\left[V_{\\mathrm{DS1}}I_{D1}t-\\displaystyle \\frac{1}{2}\\displaystyle \\frac{I_{D1}\\left(V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}\\right){+V}_{\\mathrm{DS1}}\\left(I_{D1}-I_{D2}\\right)}{t_1}t^2+\\displaystyle \\frac{1}{3}\\displaystyle \\frac{\\left(V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}\\right)\\left(I_{D1}-I_{D2}\\right)}{t_1^2}t^3\\right]_0^{t_1}\\)<\/span> \uff08C-6\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=f\\left[V_{\\mathrm{DS1}}I_{D1}t_1-\\displaystyle \\frac{1}{2}\\displaystyle \\frac{I_{D1}\\left(V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}\\right){+V}_{\\mathrm{DS1}}\\left(I_{D1}-I_{D2}\\right)}{t_1}t_1^2+\\displaystyle \\frac{1}{3}\\displaystyle \\frac{\\left(V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}\\right)\\left(I_{D1}-I_{D2}\\right)}{t_1^2}t_1^3\\right]\\)<\/span> \uff08C-7\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=f\\left[V_{\\mathrm{DS1}}I_{D1}t_1-\\displaystyle \\frac{1}{2}\\left(I_{D1}\\left(V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}\\right)+V_{\\mathrm{DS1}}\\left(I_{D1}-I_{D2}\\right)\\right)t_1+\\displaystyle \\frac{1}{3}\\left(V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}\\right)\\left(I_{D1}-I_{D2}\\right)t_1\\right]\\)<\/span> \uff08C-8\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(= \\left[ \\displaystyle \\frac{1}{3} (V_{DS1} \u2013 V_{DS2}) (I_{D1} \u2013 I_{D2}) \u2013 \\displaystyle \\frac{1}{2} I_{D1} (V_{DS1} \u2013 V_{DS2}) \u2013 \\displaystyle \\frac{1}{2} V_{DS1} (I_{D1} \u2013 I_{D2}) + V_{DS1} I_{D1} \\right] t_1 f \\, [W]\\)<\/span> \uff08C-9\uff09<\/p>\n<p>\u6c42\u4e0b\u5217\u6761\u4ef6\u4e0b\u7684\u529f\u7387\u635f\u8017\u3002<\/p>\n<p><span class=\"mathjax-text\">\u30fb\\(\\underline{I_{D1}\u22540}\\)<\/span> \uff08C-10\uff09<\/p>\n<p>\u5c06\u516c\u5f0f\uff08C-10\uff09\u4ee3\u5165\u516c\u5f0f\uff08C-9\uff09\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P=\\left[\\displaystyle \\frac{1}{3}\\left(V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}\\right)\\left(0-I_{D2}\\right)-\\displaystyle \\frac{1}{2}\\times0\\left(V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}\\right)-\\displaystyle \\frac{1}{2}V_{\\mathrm{DS1}}\\left(0-I_{D2}\\right)+V_{\\mathrm{DS1}}\\times0\\right]t_1f\\)<\/span> \uff08C-11\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=\\left[\\displaystyle \\frac{1}{3}\\left(V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}\\right)\\left(-I_{D2}\\right)+\\displaystyle \\frac{1}{2}V_{\\mathrm{DS1}}I_{D2}\\right]t_1f\\)<\/span> \uff08C-12\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(= \\displaystyle \\frac{1}{6} (V_{DS1} + 2V_{DS2}) I_{D2} t_1 f \\, [W]\\)<\/span> \uff08C-13\uff09<\/p>\n<p><span class=\"mathjax-text\">\u30fb\\(\\underline{V_{DS}2\u22540}\\)<\/span> \uff08C-14\uff09<\/p>\n<p>\u5c06\u516c\u5f0f\uff08C-14\uff09\u4ee3\u5165\u516c\u5f0f\uff08C-9\uff09\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P=\\left[\\displaystyle \\frac{1}{3}\\left(V_{\\mathrm{DS1}}-0\\right)\\left(I_{D1}-I_{D2}\\right)-\\displaystyle \\frac{1}{2}I_{D1}\\left(V_{\\mathrm{DS1}}-0\\right)-\\displaystyle \\frac{1}{2}V_{\\mathrm{DS1}}\\left(I_{D1}-I_{D2}\\right)+V_{\\mathrm{DS1}}I_{D1}\\right]t_1f\\)<\/span> \uff08C-15\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=\\left[\\displaystyle \\frac{1}{3}V_{\\mathrm{DS1}}\\left(I_{D1}-I_{D2}\\right)-\\displaystyle \\frac{1}{2}I_{D1}V_{\\mathrm{DS1}}-\\displaystyle \\frac{1}{2}V_{\\mathrm{DS1}}\\left(I_{D1}-I_{D2}\\right)+V_{\\mathrm{DS1}}I_{D1}\\right]t_1f\\)<\/span> \uff08C-16\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(= \\displaystyle \\frac{1}{6} V_{DS1} (2I_{D1} + I_{D2}) t_1 f \\, [W]\\)<\/span> \uff08C-17\uff09<\/p>\n<p><span class=\"mathjax-text\">\u30fb\\(\\underline{I_{D1}\u22540,V_{DS2}\u22540}\\)<\/span> \uff08C-18\uff09<\/p>\n<p>\u5c06\u516c\u5f0f\uff08C-18\uff09\u4ee3\u5165\u516c\u5f0f\uff08C-9\uff09\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P=\\left[\\displaystyle \\frac{1}{3}\\left(V_{\\mathrm{DS1}}-0\\right)\\left(0-I_{D2}\\right)-\\displaystyle \\frac{1}{2}\\times0\\left(V_{\\mathrm{DS1}}-0\\right)-\\displaystyle \\frac{1}{2}V_{\\mathrm{DS1}}\\left(0-I_{D2}\\right)+V_{\\mathrm{DS1}}\\times0\\right]t_1f\\)<\/span> \uff08C-19\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=\\left[\\displaystyle \\frac{1}{3}V_{\\mathrm{DS1}}\\left(-I_{D2}\\right)-\\displaystyle \\frac{1}{2}V_{\\mathrm{DS1}}\\left(-I_{D2}\\right)\\right]t_1f\\)<\/span> \uff08C-20\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(= \\displaystyle \\frac{1}{6} V_{DS1} I_{D2} t_1 f \\, [W]\\)<\/span> \uff08C-21\uff09<\/p>\n<h3>\u5404\u79cd\u6ce2\u5f62\u7684\u5f00\u5173\u635f\u8017\u8ba1\u7b97\u793a\u4f8b\uff1a\u4f8b4\uff1a\\(I_D\\)\u6052\u5b9a\u3001\\(V_{DS}\\)\u4e0a\u5347\u6ce2\u5f62\uff08\u9644\u5f55D\uff09<\/h3>\n<p>\u4e0b\u9762\u6211\u4eec\u6839\u636e\u5f00\u5173\u6ce2\u5f62\u7684\u6f0f-\u6e90\u7535\u538b\\(V_{DS}\\)\u548c\u6f0f\u6781\u7535\u6d41\\(I_D\\)\uff0c\u4f7f\u7528\u7ebf\u6027\u8fd1\u4f3c\u65b9\u5f0f\u8ba1\u7b97\u5f00\u901a\u65f6\u548c\u5173\u65ad\u65f6\u7684\u529f\u7387\u635f\u8017\uff08\u5f00\u5173\u635f\u8017\uff09\u3002\u56feD-1\u662f\u7528\u4e8e\u635f\u8017\u8ba1\u7b97\u7684\u6ce2\u5f62\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-27613 aligncenter\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2025\/05\/013-1.png\" alt=\"\" width=\"257\" height=\"309\" \/><\/p>\n<p>\u56feD-1\u4e2d0-t1\u671f\u95f4\u7684\u529f\u7387\u635f\u8017\\(P\\)\uff0c\u901a\u5e38\u53ef\u4ee5\u901a\u8fc7\u5bf9\u516c\u5f0f\uff08D-1\uff09\u4e2d\u7684\u7535\u6d41\u548c\u7535\u538b\u4e4b\u79ef\u8fdb\u884c\u79ef\u5206\u6765\u8ba1\u7b97\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P = f \\int_{0}^{t_1} I_D (t) V_{DS} (t) \\, dt\\)<\/span> \uff08D-1\uff09<\/p>\n<p>\u5176\u4e2d\uff0c\\(f\\)\uff1a\u5f00\u5173\u9891\u7387\uff3bHz\uff3d<\/p>\n<p>\u53e6\u5916\uff0c\\(I_{D(t)}\\)\u548c\\(V_{DS(t)}\\)\u53ef\u6839\u636e\u56feD-1\u4e2d\u7684\u659c\u7387\uff0c\u7528\u516c\u5f0f\uff08D-2\uff09\u548c\u516c\u5f0f\uff08D-3\uff09\u6765\u8868\u793a\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(I_D\\left(t\\right)=I_{D1}\\)<\/span> \uff08D-2\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(V_{\\mathrm{DS}}\\left(t\\right)=V_{\\mathrm{DS1}}+\\displaystyle \\frac{V_{\\mathrm{DS2}}-V_{\\mathrm{DS1}}}{t_1}t=V_{\\mathrm{DS1}}-\\displaystyle \\frac{V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}}{t_1}t\\)<\/span> \uff08D-3\uff09<\/p>\n<p>\u5c06\u516c\u5f0f\uff08D-2\uff09\u548c\u516c\u5f0f\uff08D-3\uff09\u4ee3\u5165\u516c\u5f0f\uff08D-1\uff09\uff0c<\/p>\n<p><span class=\"mathjax-text\">\\(P=f\\int_{0}^{t_1}{I_{D1}\\left(V_{\\mathrm{DS1}}-\\displaystyle \\frac{V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}}{t_1}t\\right)dt}\\)<\/span> \uff08D-4\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=f\\int_{0}^{t_1}\\left(V_{\\mathrm{DS1}}I_{D1}-\\displaystyle \\frac{I_{D1}\\left(V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}\\right)}{t_1}t\\right)dt\\)<\/span> \uff08D-5\uff09<\/p>\n<p>\u6839\u636e\u516c\u5f0f\u8fdb\u884c\u79ef\u5206\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P=f\\left[V_{\\mathrm{DS1}}I_{D1}t-\\displaystyle \\frac{1}{2}\\displaystyle \\frac{I_{D1}\\left(V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}\\right)}{t_1}t^2\\right]_0^{t_1}\\)<\/span> \uff08D-6\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=f\\left[V_{\\mathrm{DS1}}I_{D1}t_1-\\displaystyle \\frac{1}{2}\\displaystyle \\frac{I_{D1}\\left(V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}\\right)}{t_1}t_1^2\\right]\\)<\/span> \uff08D-7\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=f\\left[V_{\\mathrm{DS1}}I_{D1}t_1-\\displaystyle \\frac{1}{2}\\left(I_{D1}\\left(V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}\\right)\\right)t_1\\right]\\)<\/span> \uff08D-8\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=\\displaystyle \\frac{1}{2}\\left(V_{\\mathrm{DS1}}+V_{\\mathrm{DS2}}\\right)I_{D1}t_1f\u3000\u2009W\\)<\/span> \uff08D-9\uff09<\/p>\n<p>\u6c42\u4e0b\u5217\u6761\u4ef6\u4e0b\u7684\u529f\u7387\u635f\u8017\u3002<\/p>\n<p><span class=\"mathjax-text\">\u30fb\\(\\underline{V_{DS1}\u22540}\\)<\/span> \uff08D-10\uff09<\/p>\n<p>\u5c06\u516c\u5f0f\uff08D-10\uff09\u4ee3\u5165\u516c\u5f0f\uff08D-9\uff09\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P=\\displaystyle \\frac{1}{2}\\left(0+V_{\\mathrm{DS2}}\\right)I_{D1}t_1f\\)<\/span> \uff08D-11\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(= \\displaystyle \\frac{1}{2} V_{DS2} I_{D1} t_1 f \\, [W]\\)<\/span> \uff08D-12\uff09<\/p>\n<h3>\u5404\u79cd\u6ce2\u5f62\u7684\u5f00\u5173\u635f\u8017\u8ba1\u7b97\u793a\u4f8b\uff1a\u4f8b5\uff1a\\(I_D\\)\u6052\u5b9a\u3001\\(V_{DS}\\)\u6052\u5b9a\uff08\u9644\u5f55E\uff09<\/h3>\n<p>\u4e0b\u9762\u6211\u4eec\u6839\u636e\u5f00\u5173\u6ce2\u5f62\u7684\u6f0f-\u6e90\u7535\u538b\\(V_{DS}\\)\u548c\u6f0f\u6781\u7535\u6d41\\(I_D\\)\uff0c\u4f7f\u7528\u7ebf\u6027\u8fd1\u4f3c\u65b9\u5f0f\u8ba1\u7b97\u5f00\u901a\u65f6\u548c\u5173\u65ad\u65f6\u7684\u529f\u7387\u635f\u8017\uff08\u5f00\u5173\u635f\u8017\uff09\u3002\u56feE-1\u662f\u7528\u4e8e\u635f\u8017\u8ba1\u7b97\u7684\u6ce2\u5f62\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-27614 aligncenter\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2025\/05\/014-1.png\" alt=\"\" width=\"281\" height=\"347\" \/><\/p>\n<p>\u56feE-1\u4e2d0-t1\u671f\u95f4\u7684\u529f\u7387\u635f\u8017\\(P\\)\uff0c\u901a\u5e38\u53ef\u4ee5\u901a\u8fc7\u5bf9\u516c\u5f0f\uff08E-1\uff09\u4e2d\u7684\u7535\u6d41\u548c\u7535\u538b\u4e4b\u79ef\u8fdb\u884c\u79ef\u5206\u6765\u8ba1\u7b97\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P = f \\int_{0}^{t_1} I_D (t) V_{DS} (t) \\, dt\\)<\/span> \uff08E-1\uff09<\/p>\n<p>\u5176\u4e2d\uff0c\\(f\\)\uff1a\u5f00\u5173\u9891\u7387\uff3bHz\uff3d<\/p>\n<p>\u53e6\u5916\\(I_{D(t)}\\)\u548c\\(V_{DS(t)}\\)\u53ef\u6839\u636e\u56feE-1\u4e2d\u7684\u659c\u7387\uff0c\u7528\u516c\u5f0f\uff08E-2\uff09\u548c\u516c\u5f0f\uff08E-3\uff09\u6765\u8868\u793a\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(I_D\\left(t\\right)=I_{D1}\\)<\/span> \uff08E-2\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(V_{\\mathrm{DS}}\\left(t\\right)=V_{\\mathrm{DS1}}\\)<\/span> \uff08E-3\uff09<\/p>\n<p>\u5c06\u516c\u5f0f\uff08E-2\uff09\u548c\u516c\u5f0f\uff08E-3\uff09\u4ee3\u5165\u516c\u5f0f\uff08E-1\uff09\uff0c<\/p>\n<p><span class=\"mathjax-text\">\\(P = f \\int_{0}^{t_1} I_{D1} V_{DS1} \\, dt\\)<\/span> \uff08E-4\uff09<\/p>\n<p>\u6839\u636e\u516c\u5f0f\u8fdb\u884c\u79ef\u5206\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P=f\\left[V_{\\mathrm{DS1}}I_{D1}t\\right]_0^{t_1}\\)<\/span> \uff08E-5\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(= V_{DS1} I_{D1} t_1 f \\, [W]\\)<\/span> \uff08E-6\uff09<\/p>\n<h3>\u5404\u79cd\u6ce2\u5f62\u7684\u5f00\u5173\u635f\u8017\u8ba1\u7b97\u793a\u4f8b\uff1a\u4f8b6\uff1a\\(I_D\\)\u6052\u5b9a\u3001\\(V_{DS}\\)\u4e0b\u964d\u6ce2\u5f62\uff08\u9644\u5f55F\uff09<\/h3>\n<p>\u4e0b\u9762\u6211\u4eec\u6839\u636e\u5f00\u5173\u6ce2\u5f62\u7684\u6f0f-\u6e90\u7535\u538b\\(V_{DS}\\)\u548c\u6f0f\u6781\u7535\u6d41\\(I_D\\)\uff0c\u4f7f\u7528\u7ebf\u6027\u8fd1\u4f3c\u65b9\u5f0f\u8ba1\u7b97\u5f00\u901a\u65f6\u548c\u5173\u65ad\u65f6\u7684\u529f\u7387\u635f\u8017\uff08\u5f00\u5173\u635f\u8017\uff09\u3002\u56feF-1\u662f\u7528\u4e8e\u635f\u8017\u8ba1\u7b97\u7684\u6ce2\u5f62\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-27615 aligncenter\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2025\/05\/015-1.png\" alt=\"\" width=\"280\" height=\"345\" \/><br \/>\n\u56feF-1\u4e2d0-t1\u671f\u95f4\u7684\u529f\u7387\u635f\u8017\\(P\\)\uff0c\u901a\u5e38\u53ef\u4ee5\u901a\u8fc7\u5bf9\u516c\u5f0f\uff08F-1\uff09\u4e2d\u7684\u7535\u6d41\u548c\u7535\u538b\u4e4b\u79ef\u8fdb\u884c\u79ef\u5206\u6765\u8ba1\u7b97\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P = f \\int_{0}^{t_1} I_D (t) V_{DS} (t) \\, dt\\)<\/span> \uff08F-1\uff09<\/p>\n<p>\u5176\u4e2d\uff0c\\(f\\)\uff1a\u5f00\u5173\u9891\u7387\uff3bHz\uff3d<\/p>\n<p>\u53e6\u5916\\(I_{D(t)}\\)\u548c\\(V_{DS(t)}\\)\u53ef\u6839\u636e\u56feF-1\u4e2d\u7684\u659c\u7387\uff0c\u7528\u516c\u5f0f\uff08F-2\uff09\u548c\u516c\u5f0f\uff08F-3\uff09\u6765\u8868\u793a\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(I_D\\left(t\\right)=I_{D1}\\)<\/span> \uff08F-2\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(V_{\\mathrm{DS}}\\left(t\\right)=V_{\\mathrm{DS1}}-\\displaystyle \\frac{V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}}{t_1}t\\)<\/span> \uff08F-3\uff09<\/p>\n<p>\u5c06\u516c\u5f0f\uff08F-2\uff09\u548c\u516c\u5f0f\uff08F-3\uff09\u4ee3\u5165\u516c\u5f0f\uff08F-1\uff09\uff0c<\/p>\n<p><span class=\"mathjax-text\">\\(P=f\\int_{0}^{t_1}{I_{D1}\\left(V_{\\mathrm{DS1}}-\\displaystyle \\frac{V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}}{t_1}t\\right)dt}\\)<\/span> \uff08F-4\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=f\\int_{0}^{t_1}\\left(V_{\\mathrm{DS1}}I_{D1}-\\displaystyle \\frac{I_{D1}\\left(V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}\\right)}{t_1}t\\right)dt\\)<\/span> \uff08F-5\uff09<\/p>\n<p>\u6839\u636e\u516c\u5f0f\u8fdb\u884c\u79ef\u5206\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P=f\\left[V_{\\mathrm{DS1}}I_{D1}t-\\displaystyle \\frac{1}{2}\\displaystyle \\frac{I_{D1}\\left(V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}\\right)}{t_1}t^2\\right]_0^{t_1}\\)<\/span> \uff08F-6\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=f\\left(V_{\\mathrm{DS1}}I_{D1}t_1-\\displaystyle \\frac{1}{2}\\displaystyle \\frac{I_{D1}\\left(V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}\\right)}{t_1}t_1^2\\right)\\)<\/span> \uff08F-7\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=f\\left(V_{\\mathrm{DS1}}I_{D1}t_1-\\displaystyle \\frac{1}{2}\\left(I_{D1}\\left(V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}\\right)\\right)t_1\\right)\\)<\/span> \uff08F-8\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(= \\displaystyle \\frac{1}{2} (V_{DS1} + V_{DS2}) I_{D1} t_1 f \\, [W]\\)<\/span> \uff08F-9\uff09<\/p>\n<p>\u6c42\u4e0b\u5217\u6761\u4ef6\u4e0b\u7684\u529f\u7387\u635f\u8017\u3002<\/p>\n<p><span class=\"mathjax-text\">\u30fb\\(\\underline{V_{DS2} \u2254 0}\\)<\/span> \uff08F-10\uff09<\/p>\n<p>\u5c06\u516c\u5f0f\uff08F-10\uff09\u4ee3\u5165\u516c\u5f0f\uff08F-9\uff09\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P=\\displaystyle \\frac{1}{2}\\left(V_{\\mathrm{DS1}}+0\\right)I_{D1}t_1f\\)<\/span> \uff08F-11\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(= \\displaystyle \\frac{1}{2} V_{DS1} I_{D1} t_1 f \\, [W]\\)<\/span> \uff08F-12\uff09<\/p>\n<h3>\u5404\u79cd\u6ce2\u5f62\u7684\u5f00\u5173\u635f\u8017\u8ba1\u7b97\u793a\u4f8b\uff1a\u4f8b7\uff1a\\(I_D\\)\u4e0b\u964d\u3001\\(V_{DS}\\)\u4e0a\u5347\u6ce2\u5f62\uff08\u9644\u5f55G\uff09<\/h3>\n<p>\u4e0b\u9762\u6211\u4eec\u6839\u636e\u5f00\u5173\u6ce2\u5f62\u7684\u6f0f-\u6e90\u7535\u538b\\(V_{DS}\\)\u548c\u6f0f\u6781\u7535\u6d41\\(I_D\\)\uff0c\u4f7f\u7528\u7ebf\u6027\u8fd1\u4f3c\u65b9\u5f0f\u8ba1\u7b97\u5f00\u901a\u65f6\u548c\u5173\u65ad\u65f6\u7684\u529f\u7387\u635f\u8017\uff08\u5f00\u5173\u635f\u8017\uff09\u3002\u56feG-1\u662f\u7528\u4e8e\u635f\u8017\u8ba1\u7b97\u7684\u6ce2\u5f62\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-27616 aligncenter\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2025\/05\/016-1.png\" alt=\"\" width=\"276\" height=\"305\" \/><\/p>\n<p>\u56feG-1\u4e2d0-t1\u671f\u95f4\u7684\u529f\u7387\u635f\u8017\\(P\\)\uff0c\u901a\u5e38\u53ef\u4ee5\u901a\u8fc7\u5bf9\u516c\u5f0f\uff08C-1\uff09\u4e2d\u7684\u7535\u6d41\u548c\u7535\u538b\u4e4b\u79ef\u8fdb\u884c\u79ef\u5206\u6765\u8ba1\u7b97\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P = f \\int_{0}^{t_1} I_D (t) V_{DS} (t) \\, dt\\)<\/span> \uff08G-1\uff09<\/p>\n<p>\u5176\u4e2d\uff0c\\(f\\)\uff1a\u5f00\u5173\u9891\u7387\uff3bHz\uff3d<\/p>\n<p>\u53e6\u5916\\(I_{D(t)}\\)\u548c\\(V_{DS(t)}\\)\u53ef\u6839\u636e\u56feG-1\u4e2d\u7684\u659c\u7387\uff0c\u7528\u516c\u5f0f\uff08G-2\uff09\u548c\u516c\u5f0f\uff08G-3\uff09\u6765\u8868\u793a\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(I_D\\left(t\\right)=I_{D1}-\\displaystyle \\frac{I_{D1}-I_{D2}}{t_1}\\)<\/span> \uff08G-2\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(V_{\\mathrm{DS}}\\left(t\\right)=V_{\\mathrm{DS1}}+\\displaystyle \\frac{V_{\\mathrm{DS2}}-V_{\\mathrm{DS1}}}{t_1}t=V_{\\mathrm{DS1}}-\\displaystyle \\frac{V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}}{t_1}t\\)<\/span> \uff08G-3\uff09<\/p>\n<p>\u5c06\u516c\u5f0f\uff08G-2\uff09\u548c\u516c\u5f0f\uff08G-3\uff09\u4ee3\u5165\u516c\u5f0f\uff08G-1\uff09\uff0c<\/p>\n<p><span class=\"mathjax-text\">\\(P=f\\int_{0}^{t_1}\\left(I_{D1}-\\displaystyle \\frac{I_{D1}-I_{D2}}{t_1}t\\right)\\left(V_{\\mathrm{DS1}}-\\displaystyle \\frac{V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}}{t_1}t\\right)dt\\)<\/span> \uff08G-4\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=f\\int_{0}^{t_1}\\left(V_{\\mathrm{DS1}}I_{D1}-\\displaystyle \\frac{I_{D1}\\left(V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}\\right)}{t_1}t-\\displaystyle \\frac{V_{\\mathrm{DS1}}\\left(I_{D1}-I_{D2}\\right)}{t_1}t+\\displaystyle \\frac{\\left(V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}\\right)\\left(I_{D1}-I_{D2}\\right)}{t_1^2}t^2\\right)dt\\)<\/span> \uff08G-5\uff09<\/p>\n<p>\u6839\u636e\u516c\u5f0f\u8fdb\u884c\u79ef\u5206\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P=f\\left[V_{\\mathrm{DS1}}I_{D1}t-\\displaystyle \\frac{1}{2}\\displaystyle \\frac{I_{D1}\\left(V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}\\right)+V_{\\mathrm{DS1}}\\left(I_{D1}-I_{D2}\\right)}{t_1}t^2+\\displaystyle \\frac{1}{3}\\displaystyle \\frac{\\left(V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}\\right)\\left(I_{D1}-I_{D2}\\right)}{t_1^2}t^3\\right]_0^{t_1}\\)<\/span> \uff08G-6\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=f\\left[V_{\\mathrm{DS1}}I_{D1}t_1-\\displaystyle \\frac{1}{2}\\displaystyle \\frac{I_{D1}\\left(V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}\\right)+V_{\\mathrm{DS1}}\\left(I_{D1}-I_{D2}\\right)}{t_1}t_1^2+\\displaystyle \\frac{1}{3}\\displaystyle \\frac{\\left(V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}\\right)\\left(I_{D1}-I_{D2}\\right)}{t_1^2}t_1^3\\right]\\)<\/span> \uff08G-7\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=f\\left[V_{\\mathrm{DS1}}I_{D1}t_1-\\displaystyle \\frac{1}{2}\\left(I_{D1}\\left(V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}\\right)+V_{\\mathrm{DS1}}\\left(I_{D1}-I_{D2}\\right)\\right)t_1+\\displaystyle \\frac{1}{3}\\left(V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}\\right)\\left(I_{D1}-I_{D2}\\right)t_1\\right]\\)<\/span> \uff08G-8\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(= \\left[ \\displaystyle \\frac{1}{3} (V_{DS1} \u2013 V_{DS2}) (I_{D1} \u2013 I_{D2}) \u2013 \\displaystyle \\frac{1}{2} I_{D1} (V_{DS1} \u2013 V_{DS2}) \u2013 \\displaystyle \\frac{1}{2} V_{DS1} (I_{D1} \u2013 I_{D2}) + V_{DS1} I_{D1} \\right] t_1 f \\, [W]\\)<\/span> \uff08G-9\uff09<\/p>\n<p>\u6c42\u4e0b\u5217\u6761\u4ef6\u4e0b\u7684\u529f\u7387\u635f\u8017\u3002<\/p>\n<p><span class=\"mathjax-text\">\u30fb\\(\\underline{I_{DS2} \u2254 0}\\)<\/span> \uff08G-10\uff09<\/p>\n<p>\u5c06\u516c\u5f0f\uff08G-10\uff09\u4ee3\u5165\u516c\u5f0f\uff08G-9\uff09\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P=\\left[\\displaystyle \\frac{1}{3}\\left(V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}\\right)\\left(I_{D1}-0\\right)-\\displaystyle \\frac{1}{2}I_{D1}\\left(V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}\\right)-\\displaystyle \\frac{1}{2}V_{\\mathrm{DS1}}\\left(I_{D1}-0\\right)+V_{\\mathrm{DS1}}I_{D1}\\right]t_1f\\)<\/span> \uff08G-11\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=\\left[\\displaystyle \\frac{1}{3}\\left(V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}\\right)I_{D1}-\\displaystyle \\frac{1}{2}I_{D1}\\left(V_{\\mathrm{DS1}}-V_{\\mathrm{DS2}}\\right)-\\displaystyle \\frac{1}{2}V_{\\mathrm{DS1}}I_{D1}+V_{\\mathrm{DS1}}I_{D1}\\right]t_1f\\)<\/span> \uff08G-12\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(= \\displaystyle \\frac{1}{6} (2V_{DS1} + V_{DS2}) I_{D1} t_1 f \\, [W]\\)<\/span> \uff08G-13\uff09<\/p>\n<p><span class=\"mathjax-text\">\u30fb\\(\\underline{V_{DS1}\u22540}\\)<\/span> \uff08G-14\uff09<\/p>\n<p>\u5c06\u516c\u5f0f\uff08G-14\uff09\u4ee3\u5165\u516c\u5f0f\uff08G-9\uff09\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P=\\left[\\displaystyle \\frac{1}{3}\\left(0-V_{\\mathrm{DS2}}\\right)\\left(I_{D1}-I_{D2}\\right)-\\displaystyle \\frac{1}{2}I_{D1}\\left(0-V_{\\mathrm{DS2}}\\right)-\\displaystyle \\frac{1}{2}\\times0\\left(I_{D1}-I_{D2}\\right)+0\\times I_{D1}\\right]t_1f\\)<\/span> \uff08G-15\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=\\left[-\\displaystyle \\frac{1}{3}V_{\\mathrm{DS2}}\\left(I_{D1}-I_{D2}\\right)+\\displaystyle \\frac{1}{2}I_{D1}V_{\\mathrm{DS2}}\\right]t_1f\\)<\/span> \uff08G-16\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(= \\displaystyle \\frac{1}{6} V_{DS2} (I_{D1} + 2I_{D2}) t_1 f \\, [W]\\)<\/span> \uff08G-17\uff09<\/p>\n<p><span class=\"mathjax-text\">\u30fb\\(\\underline{I_{D2} := 0, \\quad V_{DS1} := 0}\\)<\/span> \uff08G-18\uff09<\/p>\n<p>\u5c06\u516c\u5f0f\uff08G-18\uff09\u4ee3\u5165\u516c\u5f0f\uff08G-9\uff09\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P=\\left[\\displaystyle \\frac{1}{3}\\left(0-V_{\\mathrm{DS2}}\\right)\\left(I_{D1}-0\\right)-\\displaystyle \\frac{1}{2}I_{D1}\\left(0-V_{\\mathrm{DS2}}\\right)-\\displaystyle \\frac{1}{2}\\times0\\left(I_{D1}-0\\right)+0\\times I_{D1}\\right]t_1f\\)<\/span> \uff08G-19\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=\\left(-\\displaystyle \\frac{1}{3}V_{\\mathrm{DS2}}I_{D1}+\\displaystyle \\frac{1}{2}I_{D1}V_{\\mathrm{DS2}}\\right)t_1f\\)<\/span> \uff08G-20\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(= \\displaystyle \\frac{1}{6} V_{DS2} I_{D1} t_1 f \\, [W]\\)<\/span> \uff08G-21\uff09<\/p>\n<h3>\u5404\u79cd\u6ce2\u5f62\u7684\u5f00\u5173\u635f\u8017\u8ba1\u7b97\u793a\u4f8b\uff1a\u4f8b8\uff1a\\(I_D\\)\u4e0b\u964d\u3001\\(V_{DS}\\)\u6052\u5b9a\u6ce2\u5f62\uff08\u9644\u5f55H\uff09<\/h3>\n<p>\u4e0b\u9762\u6211\u4eec\u6839\u636e\u5f00\u5173\u6ce2\u5f62\u7684\u6f0f-\u6e90\u7535\u538b\\(V_{DS}\\)\u548c\u6f0f\u6781\u7535\u6d41\\(I_D\\)\uff0c\u4f7f\u7528\u7ebf\u6027\u8fd1\u4f3c\u65b9\u5f0f\u8ba1\u7b97\u5f00\u901a\u65f6\u548c\u5173\u65ad\u65f6\u7684\u529f\u7387\u635f\u8017\uff08\u5f00\u5173\u635f\u8017\uff09\u3002\u56feH-1\u662f\u7528\u4e8e\u635f\u8017\u8ba1\u7b97\u7684\u6ce2\u5f62\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-27617 aligncenter\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2025\/05\/017-1.png\" alt=\"\" width=\"289\" height=\"348\" \/><\/p>\n<p>\u56feH-1\u4e2d0-t1\u671f\u95f4\u7684\u529f\u7387\u635f\u8017\\(P\\)\uff0c\u901a\u5e38\u53ef\u4ee5\u901a\u8fc7\u5bf9\u516c\u5f0f\uff08H-1\uff09\u4e2d\u7684\u7535\u6d41\u548c\u7535\u538b\u4e4b\u79ef\u8fdb\u884c\u79ef\u5206\u6765\u8ba1\u7b97\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P = f \\int_{0}^{t_1} I_D (t) V_{DS} (t) \\, dt\\)<\/span> \uff08H-1\uff09<\/p>\n<p>\u5176\u4e2d\uff0c\\(f\\)\uff1a\u5f00\u5173\u9891\u7387\uff3bHz\uff3d<\/p>\n<p>\u53e6\u5916\\(I_{D(t)}\\)\u548c\\(V_{DS(t)}\\)\u53ef\u6839\u636e\u56feH-1\u4e2d\u7684\u659c\u7387\uff0c\u7528\u516c\u5f0f\uff08H-2\uff09\u548c\u516c\u5f0f\uff08H-3\uff09\u6765\u8868\u793a\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(I_D\\left(t\\right)=I_{D1}-\\displaystyle \\frac{I_{D1}-I_{D2}}{t_1}t\\)<\/span> \uff08H-2\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(V_{DS}\\left(t\\right)=V_{DS1}\\)<\/span> \uff08H-3\uff09<\/p>\n<p>\u5c06\u516c\u5f0f\uff08H-2\uff09\u548c\u516c\u5f0f\uff08H-3\uff09\u4ee3\u5165\u516c\u5f0f\uff08H-1\uff09\uff0c<\/p>\n<p><span class=\"mathjax-text\">\\(P=f\\int_{0}^{t_1}\\left(I_{D1}-\\displaystyle \\frac{I_{D1}-I_{D2}}{t_1}t\\right)\\left(V_{DS1}\\right)dt\\)<\/span> \uff08H-4\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=f\\int_{0}^{t_1}\\left(V_{DS1}I_{D1}-\\displaystyle \\frac{V_{DS1}\\left(I_{D1}-I_{D2}\\right)}{t_1}t\\right)dt\\)<\/span> \uff08H-5\uff09<\/p>\n<p>\u6839\u636e\u516c\u5f0f\u8fdb\u884c\u79ef\u5206\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P=f\\left[V_{DS1}I_{D1}t-\\displaystyle \\frac{1}{2}\\displaystyle \\frac{V_{DS1}\\left(I_{D1}-I_{D2}\\right)}{t_1}t^2\\right]_0^{t_1}\\)<\/span> \uff08H-6\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=f\\left[V_{DS1}I_{D1}t_1-\\displaystyle \\frac{1}{2}\\displaystyle \\frac{V_{DS1}\\left(I_{D1}-I_{D2}\\right)}{t_1}t_1^2\\right]\\)<\/span> \uff08H-7\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=f\\left[V_{DS1}I_{D1}t_1-\\displaystyle \\frac{1}{2}\\left(V_{DS1}\\left(I_{D1}-I_{D2}\\right)\\right)t_1\\right]\\)<\/span> \uff08H-8\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(= \\displaystyle \\frac{1}{2} V_{DS1} (I_{D1} + I_{D2}) t_1 f \\, [W]\\)<\/span> \uff08H-9\uff09<\/p>\n<p>\u6c42\u4e0b\u5217\u6761\u4ef6\u4e0b\u7684\u529f\u7387\u635f\u8017\u3002<\/p>\n<p><span class=\"mathjax-text\">\u30fb\\(\\underline{I_{D2} \u2254 0}\\)<\/span> \uff08H-10\uff09<\/p>\n<p>\u5c06\u516c\u5f0f\uff08H-10\uff09\u4ee3\u5165\u516c\u5f0f\uff08H-9\uff09\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P = \\displaystyle \\frac{1}{2} V_{DS1} I_{D1} t_1 f \\, [W]\\)<\/span> \uff08H-11\uff09<\/p>\n<h3>\u5404\u79cd\u6ce2\u5f62\u7684\u5f00\u5173\u635f\u8017\u8ba1\u7b97\u793a\u4f8b\uff1a\u4f8b9\uff1a\\(I_D\\)\u4e0b\u964d\u3001\\(V_{DS}\\)\u4e0b\u964d\u6ce2\u5f62\uff08\u9644\u5f55I\uff09<\/h3>\n<p>\u4e0b\u9762\u6211\u4eec\u6839\u636e\u5f00\u5173\u6ce2\u5f62\u7684\u6f0f-\u6e90\u7535\u538b\\(V_{DS}\\)\u548c\u6f0f\u6781\u7535\u6d41\\(I_D\\)\uff0c\u4f7f\u7528\u7ebf\u6027\u8fd1\u4f3c\u65b9\u5f0f\u8ba1\u7b97\u5f00\u901a\u65f6\u548c\u5173\u65ad\u65f6\u7684\u529f\u7387\u635f\u8017\uff08\u5f00\u5173\u635f\u8017\uff09\u3002\u56feI-1\u662f\u7528\u4e8e\u635f\u8017\u8ba1\u7b97\u7684\u6ce2\u5f62\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-27619 aligncenter\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2025\/05\/018-1.png\" alt=\"\" width=\"295\" height=\"320\" \/><\/p>\n<p>\u56feI-1\u4e2d0-t1\u671f\u95f4\u7684\u529f\u7387\u635f\u8017\\(P\\)\uff0c\u901a\u5e38\u53ef\u4ee5\u901a\u8fc7\u5bf9\u516c\u5f0f\uff08I-1\uff09\u4e2d\u7684\u7535\u6d41\u548c\u7535\u538b\u4e4b\u79ef\u8fdb\u884c\u79ef\u5206\u6765\u8ba1\u7b97\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P = f \\int_{0}^{t_1} I_D (t) V_{DS} (t) \\, dt\\)<\/span> \uff08I-1\uff09<\/p>\n<p>\u5176\u4e2d\uff0c\\(f\\)\uff1a\u5f00\u5173\u9891\u7387\uff3bHz\uff3d<\/p>\n<p>\u53e6\u5916\\(I_{D(t)}\\)\u548c\\(V-{DS(t)}\\)\u53ef\u6839\u636e\u56feI-1\u4e2d\u7684\u659c\u7387\uff0c\u7528\u516c\u5f0f\uff08I-2\uff09\u548c\u516c\u5f0f\uff08I-3\uff09\u6765\u8868\u793a\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(I_D\\left(t\\right)=I_{D1}-\\displaystyle \\frac{I_{D1}-I_{D2}}{t_1}t\\)<\/span> \uff08I-2\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(V_{DS}\\left(t\\right)=V_{DS1}-\\displaystyle \\frac{V_{DS1}-V_{DS2}}{t_1}t\\)<\/span> \uff08I-3\uff09<\/p>\n<p>\u5c06\u516c\u5f0f\uff08I-2\uff09\u548c\u516c\u5f0f\uff08I-3\uff09\u4ee3\u5165\u516c\u5f0f\uff08I-1\uff09\uff0c<\/p>\n<p><span class=\"mathjax-text\">\\(P=f\\int_{0}^{t_1}\\left(I_{D1}-\\displaystyle \\frac{I_{D1}-I_{D2}}{t_1}t\\right)\\left(V_{DS1}-\\displaystyle \\frac{V_{DS1}-V_{DS2}}{t_1}t\\right)dt\\)<\/span> \uff08I-4\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(= f \\int_{0}^{t_1} \\left( V_{DS1} I_{D1} \u2013 \\displaystyle \\frac{I_{D1} (V_{DS1} \u2013 V_{DS2}) + V_{DS1} (I_{D1} \u2013 I_{D2})}{t_1} t + \\displaystyle \\frac{(V_{DS1} \u2013 V_{DS2}) (I_{D1} \u2013 I_{D2})}{t_1^2} t^2 \\right) dt\\)<\/span> \uff08I-5\uff09<\/p>\n<p>\u6839\u636e\u516c\u5f0f\u8fdb\u884c\u79ef\u5206\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P=f\\left[V_{DS1}I_{D1}t-\\displaystyle \\frac{1}{2}\\displaystyle \\frac{I_{D1}\\left(V_{DS1}-V_{DS2}\\right)+V_{DS1}\\left(I_{D1}-I_{D2}\\right)}{t_1}t^2+\\displaystyle \\frac{1}{3}\\displaystyle \\frac{\\left(V_{DS1}-V_{DS2}\\right)\\left(I_{D1}-I_{D2}\\right)}{t_1^2}t^3\\right]_0^{t_1}\\)<\/span> \uff08I-6\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=f\\left[V_{DS1}I_{D1}t_1-\\displaystyle \\frac{1}{2}\\displaystyle \\frac{I_{D1}\\left(V_{DS1}-V_{DS2}\\right)+V_{DS1}\\left(I_{D1}-I_{D2}\\right)}{t_1}t_1^2+\\displaystyle \\frac{1}{3}\\displaystyle \\frac{\\left(V_{DS1}-V_{DS2}\\right)\\left(I_{D1}-I_{D2}\\right)}{t_1^2}t_1^3\\right]\\)<\/span> \uff08I-7\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=f\\left[V_{DS1}I_{D1}t_1-\\displaystyle \\frac{1}{2}\\left(I_{D1}\\left(V_{DS1}-V_{DS2}\\right)+V_{DS1}\\left(I_{D1}-I_{D2}\\right)\\right)t_1+\\displaystyle \\frac{1}{3}\\left(V_{DS1}-V_{DS2}\\right)\\left(I_{D1}-I_{D2}\\right)t_1\\right]\\)<\/span> \uff08I-8\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=\\left[\\displaystyle \\frac{1}{3}\\left(V_{DS1}-V_{DS2}\\right)\\left(I_{D1}-I_{D2}\\right)-\\displaystyle \\frac{1}{2}I_{D1}\\left(V_{DS1}-V_{DS2}\\right)-\\displaystyle \\frac{1}{2}V_{DS1}\\left(I_{D1}-I_{D2}\\right)+V_{DS1}I_{D1}\\right]t_1f\\ \\left[W\\right]\\)<\/span> \uff08I-9\uff09<\/p>\n<p>\u6c42\u4e0b\u5217\u6761\u4ef6\u4e0b\u7684\u529f\u7387\u635f\u8017\u3002<\/p>\n<p><span class=\"mathjax-text\">\u30fb\\(\\underline{V_{DS2}\u22540}\\)<\/span> \uff08I-10\uff09<\/p>\n<p>\u5c06\u516c\u5f0f\uff08I-10\uff09\u4ee3\u5165\u516c\u5f0f\uff08I-9\uff09\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P=\\left[\\displaystyle \\frac{1}{3}\\left(V_{DS1}-0\\right)\\left(I_{D1}-I_{D2}\\right)-\\displaystyle \\frac{1}{2}I_{D1}\\left(V_{DS1}-0\\right)-\\displaystyle \\frac{1}{2}V_{DS1}\\left(I_{D1}-I_{D2}\\right)+V_{DS1}I_{D1}\\right]t_1f\\)<\/span> \uff08I-11\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=\\left[\\displaystyle \\frac{1}{3}V_{DS1}\\left(I_{D1}-I_{D2}\\right)-\\displaystyle \\frac{1}{2}I_{D1}V_{DS1}-\\displaystyle \\frac{1}{2}V_{DS1}\\left(I_{D1}-I_{D2}\\right)+V_{DS1}I_{D1}\\right]t_1f\\)<\/span> \uff08I-12\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(= \\displaystyle \\frac{1}{6} V_{DS1} (2I_{D1} + I_{D2}) t_1 f \\, [W]\\)<\/span> \uff08I-13\uff09<\/p>\n<p><span class=\"mathjax-text\">\u30fb\\(\\underline{I_{D2}\u22540}\\)<\/span> \uff08I-14\uff09<\/p>\n<p>\u5c06\u516c\u5f0f\uff08I-14\uff09\u4ee3\u5165\u516c\u5f0f\uff08I-9\uff09\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P=\\left[\\displaystyle \\frac{1}{3}\\left(V_{DS1}-V_{DS2}\\right)\\left(I_{D1}-0\\right)-\\displaystyle \\frac{1}{2}I_{D1}\\left(V_{DS1}-V_{DS2}\\right)-\\displaystyle \\frac{1}{2}V_{DS1}\\left(I_{D1}-0\\right)+V_{DS1}I_{D1}\\right]t_1f\\)<\/span> \uff08I-15\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=\\left[\\displaystyle \\frac{1}{3}\\left(V_{DS1}-V_{DS2}\\right)I_{D1}-\\displaystyle \\frac{1}{2}I_{D1}\\left(V_{DS1}-V_{DS2}\\right)-\\displaystyle \\frac{1}{2}V_{DS1}I_{D1}+V_{DS1}I_{D1}\\right]t_1f\\)<\/span> \uff08I-16\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(= \\displaystyle \\frac{1}{6} (2V_{DS1} + V_{DS2}) I_{D1} t_1 f \\, [W]\\)<\/span> \uff08I-17\uff09<\/p>\n<h2 id=\"005\">\u5404\u79cd\u6ce2\u5f62\u7684\u5bfc\u901a\u635f\u8017\u8ba1\u7b97\u793a\u4f8b<\/h2>\n<p>\u7ee7\u201c\u5404\u79cd\u6ce2\u5f62\u7684\u5f00\u5173\u635f\u8017\u8ba1\u7b97\u793a\u4f8b\u201d\u4e4b\u540e\uff0c\u4e0b\u9762\u6211\u4eec\u6765\u770b\u5404\u79cd\u6ce2\u5f62\u7684\u5bfc\u901a\u635f\u8017\u8ba1\u7b97\u793a\u4f8b\u3002\u6211\u4eec\u5c06\u5229\u7528\u201c\u901a\u8fc7\u6ce2\u5f62\u7684\u7ebf\u6027\u8fd1\u4f3c\u5206\u5272\u6765\u8ba1\u7b97\u635f\u8017\u7684\u65b9\u6cd5\u201d\u7684\u88682\u4e2d\u7ed9\u51fa\u7684\u6240\u6709\u57fa\u4e8e\u7ebf\u6027\u8fd1\u4f3c\u5206\u5272\u8ba1\u7b97\u5bfc\u901a\u635f\u8017\u7684\u516c\u5f0f\uff0c\u6765\u8ba1\u7b971\uff5e3\u79cd\u60c5\u51b5\uff08\u9644\u5f55J\uff5eL\uff09\u4e0b\u7684\u5bfc\u901a\u635f\u8017\u3002<\/p>\n<p><strong>\u5404\u79cd\u6ce2\u5f62\u7684\u5bfc\u901a\u635f\u8017\u8ba1\u7b97\u793a\u4f8b<\/strong><\/p>\n<ul>\n<li>\u4f8b1\uff1a\\(I_D\\)\u4e0a\u5347\u6ce2\u5f62\uff08\u9644\u5f55J\uff09<\/li>\n<li>\u4f8b2\uff1a\\(I_D\\)\u6052\u5b9a\u6ce2\u5f62\uff08\u9644\u5f55K\uff09<\/li>\n<li>\u4f8b3\uff1a\\(I_D\\)\u4e0b\u964d\u6ce2\u5f62\uff08\u9644\u5f55L\uff09<\/li>\n<\/ul>\n<h3>\u5404\u79cd\u6ce2\u5f62\u7684\u5bfc\u901a\u635f\u8017\u8ba1\u7b97\u793a\u4f8b\uff1a\u4f8b1\uff1aID\u4e0a\u5347\u6ce2\u5f62\uff08\u9644\u5f55J\uff09<\/h3>\n<p>\u6211\u4eec\u901a\u8fc7MOSFET\u7684\u5bfc\u901a\u7535\u963b\\(R_{ON}\\)\u548c\u5f00\u5173\u6ce2\u5f62\u4e2d\u7684\u6f0f\u6781\u7535\u6d41\\(I_D\\)\uff0c\u5229\u7528\u7ebf\u6027\u8fd1\u4f3c\u6cd5\u6765\u6c42\u5bfc\u901a\u671f\u95f4\uff080-t1\uff09\u7684\u529f\u7387\u635f\u8017\u3002\u56feJ-1\u662f\u7528\u4e8e\u635f\u8017\u8ba1\u7b97\u7684\u6ce2\u5f62\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-27620 aligncenter\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2025\/05\/019-1.png\" alt=\"\" width=\"263\" height=\"189\" \/><\/p>\n<p>\u5728\u56feJ-1\u4e2d\uff0c\u7531\u4e8e\u57280-t10\u671f\u95f4MOSFET\u5904\u4e8e\u5bfc\u901a\u72b6\u6001\uff0c\u56e0\u6b64\\(V_{DS}\\)\u7b49\u4e8eMOSFET\u7684\u5bfc\u901a\u7535\u963b\\(R_{ON}\\)\u4e0e\\(I_D\\)\u7684\u4e58\u79ef\u3002<br \/>\n\u57280-t1\u671f\u95f4\u7684\u529f\u7387\u635f\u8017\\(P\\)\uff0c\u901a\u5e38\u53ef\u4ee5\u901a\u8fc7\u516c\u5f0f\uff08J-1\uff09\u4e2d\u7684\u7535\u963b\u4e0e\u7535\u6d41\u5e73\u65b9\u7684\u4e58\u79ef\u79ef\u5206\u8fdb\u884c\u8ba1\u7b97\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P = f \\int_{0}^{t_1} R_{ON} I_D (t)^2 \\, dt\\)<\/span> \uff08J-1\uff09<\/p>\n<p>\u5176\u4e2d\uff0c\\(R_{ON}\\)\uff1aMOSFET\u7684\u5bfc\u901a\u7535\u963b\uff3b\u03a9\uff3d<br \/>\n\\(f\\)\uff1a\u5f00\u5173\u9891\u7387\uff3bHz\uff3d<\/p>\n<p>\u53e6\u5916\uff0c\\(I_{D(t)}\\)\u53ef\u6839\u636e\u56feJ-1\u4e2d\u7684\u659c\u7387\uff0c\u7528\u516c\u5f0f\uff08J-2\uff09\u6765\u8868\u793a\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(I_D\\left(t\\right)=I_{D1}+\\displaystyle \\frac{I_{D2}-I_{D1}}{t_1}t=I_{D1}-\\displaystyle \\frac{I_{D1}-I_{D2}}{t_1}t\\)<\/span> \uff08J-2\uff09<\/p>\n<p>\u5c06\u516c\u5f0f\uff08J-2\uff09\u4ee3\u5165\u516c\u5f0f\uff08J-1\uff09\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P=f\\int_{0}^{t_1}{R_{\\mathrm{ON}}\\left(I_{D1}-\\displaystyle \\frac{I_{D1}-I_{D2}}{t_1}t\\right)^2dt}\\)<\/span> \uff08J-3\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=f\\int_{0}^{t_1}{R_{\\mathrm{ON}}\\left(I_{D1}^2-2I_{D1}\\displaystyle \\frac{I_{D1}-I_{D2}}{t_1}t+\\displaystyle \\frac{\\left(I_{D1}-I_{D2}\\right)^2}{t_1^2}t^2\\right)dt}\\)<\/span> \uff08J-4\uff09<\/p>\n<p>\u6839\u636e\u516c\u5f0f\u8fdb\u884c\u79ef\u5206\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P=fR_{\\mathrm{ON}}\\left[I_{D1}^2-2I_{D1}\\displaystyle \\frac{I_{D1}-I_{D2}}{2t_1}t^2+\\displaystyle \\frac{\\left(I_{D1}-I_{D2}\\right)^2}{3t_1^2}t^3\\right]_0^{t_1}\\)<\/span> \uff08J-5\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=fR_{\\mathrm{ON}}\\left(I_{D1}^2t_1-2I_{D1}\\displaystyle \\frac{I_{D1}-I_{D2}}{2t_1}t_1^2+\\displaystyle \\frac{\\left(I_{D1}-I_{D2}\\right)^2}{3t_1^2}t_1^3\\right)\\)<\/span> \uff08J-6\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(P=fR_{\\mathrm{ON}}\\left(I_{D1}^2t_1-I_{D1}\\left(I_{D1}-I_{D2}\\right)t_1+\\displaystyle \\frac{\\left(I_{D1}-I_{D2}\\right)^2}{3}t_1\\right)\\)<\/span> \uff08J-7\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=fR_{\\mathrm{ON}}\\left(I_{D1}^2-I_{D1}\\left(I_{D1}-I_{D2}\\right)+\\displaystyle \\frac{\\left(I_{D1}-I_{D2}\\right)^2}{3}\\right)t_1\\)<\/span> \uff08J-8\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=fR_{\\mathrm{ON}}\\left(I_{D1}I_{D2}+\\displaystyle \\frac{I_{D1}^2-2I_{D1}I_{D2}+I_{D2}^2}{3}\\right)t_1\\)<\/span> \uff08J-9\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=fR_{\\mathrm{ON}}\\left(\\displaystyle \\frac{I_{D1}^2-2I_{D1}I_{D2}+I_{D2}^2-3I_{D1}^2+3I_{D1}I_{D2}+3I_{D1}^2}{3}\\right)t_1\\)<\/span> \uff08J-10\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(= \\displaystyle \\frac{1}{3} R_{ON} (I_{D1}^2 + I_{D1} I_{D2} + I_{D2}^2) t_1 f \\, [W]\\)<\/span> \uff08J-11\uff09<\/p>\n<h3>SiC MOSFET\uff1a\u5404\u79cd\u6ce2\u5f62\u7684\u5bfc\u901a\u635f\u8017\u8ba1\u7b97\u793a\u4f8b\uff1a\u4f8b2\uff1a\\(I_D\\)\u6052\u5b9a\u6ce2\u5f62\uff08\u9644\u5f55K\uff09<\/h3>\n<p>\u6211\u4eec\u901a\u8fc7MOSFET\u7684\u5bfc\u901a\u7535\u963b\\(R_{ON}\\)\u548c\u5f00\u5173\u6ce2\u5f62\u4e2d\u7684\u6f0f\u6781\u7535\u6d41\\(I_D\\)\uff0c\u5229\u7528\u7ebf\u6027\u8fd1\u4f3c\u6cd5\u6765\u6c42\u5bfc\u901a\u671f\u95f4\uff080-t1\uff09\u7684\u529f\u7387\u635f\u8017\u3002\u56feK-1\u662f\u7528\u4e8e\u635f\u8017\u8ba1\u7b97\u7684\u6ce2\u5f62\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-27621 aligncenter\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2025\/05\/020-1.png\" alt=\"\" width=\"267\" height=\"208\" \/><\/p>\n<p>\u5728\u56feK-1\u4e2d\uff0c\u7531\u4e8e\u57280-t10\u671f\u95f4MOSFET\u5904\u4e8e\u5bfc\u901a\u72b6\u6001\uff0c\u56e0\u6b64\\(V_{DS}\\)\u7b49\u4e8eMOSFET\u7684\u5bfc\u901a\u7535\u963b\\(R_{ON}\\)\u4e0e\\(I_D\\)\u7684\u4e58\u79ef\u3002<br \/>\n\u57280-t1\u671f\u95f4\u7684\u529f\u7387\u635f\u8017\\(P\\)\uff0c\u901a\u5e38\u53ef\u4ee5\u901a\u8fc7\u516c\u5f0f\uff08K-1\uff09\u4e2d\u7684\u7535\u963b\u4e0e\u7535\u6d41\u5e73\u65b9\u7684\u4e58\u79ef\u79ef\u5206\u8fdb\u884c\u8ba1\u7b97\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P = f \\int_{0}^{t_1} R_{ON} I_D (t)^2 \\, dt\\)<\/span> \uff08K-1\uff09<\/p>\n<p>\u5176\u4e2d\uff0c\\(R_{ON}\\)\uff1aMOSFET\u7684\u5bfc\u901a\u7535\u963b\uff3b\u03a9\uff3d<br \/>\n\\(f\\)\uff1a\u5f00\u5173\u9891\u7387\uff3bHz\uff3d<\/p>\n<p>\u53e6\u5916\uff0c\\(I_{D(t)}\\)\u53ef\u6839\u636e\u56feK-1\u4e2d\u7684\u659c\u7387\uff0c\u7528\u516c\u5f0f\uff08K-2\uff09\u6765\u8868\u793a\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(I_D\\left(t\\right)=I_{D1}\\)<\/span> \uff08K-2\uff09<\/p>\n<p>\u5c06\u516c\u5f0f\uff08K-2\uff09\u4ee3\u5165\u516c\u5f0f\uff08K-1\uff09\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P = f \\int_{0}^{t_1} R_{ON} I_{D1}^2 \\, dt\\)<\/span> \uff08K-3\uff09<\/p>\n<p>\u6839\u636e\u516c\u5f0f\u8fdb\u884c\u79ef\u5206\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P=f\\left[R_{ON} I_{D1}^2\\right]_0^{t_1}\\)<\/span> \uff08K-4\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(P= R_{ON} I_{D1}^2 t_1 f \\, [W]\\)<\/span> \uff08K-5\uff09<\/p>\n<h3>SiC MOSFET\uff1a\u5404\u79cd\u6ce2\u5f62\u7684\u5bfc\u901a\u635f\u8017\u8ba1\u7b97\u793a\u4f8b\uff1a\u4f8b3\uff1a\\(I_D\\)\u4e0b\u964d\u6ce2\u5f62\uff08\u9644\u5f55L\uff09<\/h3>\n<p>\u6211\u4eec\u901a\u8fc7MOSFET\u7684\u5bfc\u901a\u7535\u963b\\(R_{ON}\\)\u548c\u5f00\u5173\u6ce2\u5f62\u4e2d\u7684\u6f0f\u6781\u7535\u6d41\\(I_D\\)\uff0c\u5229\u7528\u7ebf\u6027\u8fd1\u4f3c\u6cd5\u6765\u6c42\u5bfc\u901a\u671f\u95f4\uff080-t1\uff09\u7684\u529f\u7387\u635f\u8017\u3002\u56feL-1\u662f\u7528\u4e8e\u635f\u8017\u8ba1\u7b97\u7684\u6ce2\u5f62\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-27622 aligncenter\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2025\/05\/021-1.png\" alt=\"\" width=\"266\" height=\"189\" \/><\/p>\n<p>\u5728\u56feL-1\u4e2d\uff0c\u7531\u4e8e\u57280-t10\u671f\u95f4MOSFET\u5904\u4e8e\u5bfc\u901a\u72b6\u6001\uff0c\u56e0\u6b64\\(V_{DS}\\)\u7b49\u4e8eMOSFET\u7684\u5bfc\u901a\u7535\u963b\\(R_{ON}\\)\u4e0e\\(I_D\\)\u7684\u4e58\u79ef\u3002<br \/>\n\u57280-t1\u671f\u95f4\u7684\u529f\u7387\u635f\u8017\\(P\\)\uff0c\u901a\u5e38\u53ef\u4ee5\u901a\u8fc7\u516c\u5f0f\uff08L-1\uff09\u4e2d\u7684\u7535\u963b\u4e0e\u7535\u6d41\u5e73\u65b9\u7684\u4e58\u79ef\u79ef\u5206\u8fdb\u884c\u8ba1\u7b97\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P = f \\int_{0}^{t_1} R_{ON} I_D (t)^2 \\, dt\\)<\/span> \uff08L-1\uff09<\/p>\n<p>\u5176\u4e2d\uff0c\\(R_{ON}\\)\uff1aMOSFET\u7684\u5bfc\u901a\u7535\u963b\uff3b\u03a9\uff3d<br \/>\n\\(f\\)\uff1a\u5f00\u5173\u9891\u7387\uff3bHz\uff3d<\/p>\n<p>\u53e6\u5916\uff0c\\(I_{D(t)}\\)\u53ef\u6839\u636e\u56feL-1\u4e2d\u7684\u659c\u7387\uff0c\u7528\u516c\u5f0f\uff08L-2\uff09\u6765\u8868\u793a\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(I_D\\left(t\\right)=I_{D1}-\\displaystyle \\frac{I_{D1}-I_{D2}}{t_1}t\\)<\/span> \uff08L-2\uff09<\/p>\n<p>\u5c06\u516c\u5f0f\uff08L-2\uff09\u4ee3\u5165\u516c\u5f0f\uff08L-1\uff09\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P=f\\int_{0}^{t_1}{R_{\\mathrm{ON}}\\left(I_{D1}-\\displaystyle \\frac{I_{D1}-I_{D2}}{t_1}\\right)^2dt}\\)<\/span> \uff08L-3\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=f\\int_{0}^{t_1}{R_{\\mathrm{ON}}\\left({I_{D1}}^2-2I_{D1}\\displaystyle \\frac{I_{D1}-I_{D2}}{t_1}t+\\displaystyle \\frac{\\left(I_{D1}-I_{D2}\\right)^2}{{t_1}^2}t^2\\right)dt}\\)<\/span> \uff08L-4\uff09<\/p>\n<p>\u6839\u636e\u516c\u5f0f\u8fdb\u884c\u79ef\u5206\u3002<\/p>\n<p><span class=\"mathjax-text\">\\(P=fR_{\\mathrm{ON}}\\left[{I_{D1}}^2-2I_{D1}\\displaystyle \\frac{I_{D1}-I_{D2}}{2t_1}t^2+\\displaystyle \\frac{\\left(I_{D1}-I_{D2}\\right)^2}{3t_1^2}t^3\\right]_0^{t_1}\\)<\/span> \uff08L-5\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=fR_{\\mathrm{ON}}\\left({I_{D1}}^2t_1-2I_{D1}\\displaystyle \\frac{I_{D1}-I_{D2}}{2t_1}t_1^2+\\displaystyle \\frac{\\left(I_{D1}-I_{D2}\\right)^2}{3{t_1}^2}t_1^3\\right)\\)<\/span> \uff08L-6\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=fR_{\\mathrm{ON}}\\left({I_{D1}}^2t_1-I_{D1}\\left(I_{D1}-I_{D2}\\right)t_1+\\displaystyle \\frac{\\left(I_{D1}-I_{D2}\\right)^2}{3}t_1\\right)\\)<\/span> \uff08L-7\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=fR_{\\mathrm{ON}}\\left({I_{D1}}^2-I_{D1}\\left(I_{D1}-I_{D2}\\right)+\\displaystyle \\frac{\\left(I_{D1}-I_{D2}\\right)^2}{3}\\right)t_1\\)<\/span> \uff08L-8\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=fR_{\\mathrm{ON}}\\left(I_{D1}I_{D2}+\\displaystyle \\frac{{I_{D1}}^2-2I_{D1}I_{D2}+{I_{D2}}^2}{3}\\right)t_1\\)<\/span> \uff08L-9\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(=fR_{\\mathrm{ON}}\\left(\\displaystyle \\frac{{I_{D1}}^2-2I_{D1}I_{D2}+{I_{D2}}^2-3I_{D1}^2+3I_{D1}I_{D2}+3I_{D1}^2}{3}\\right)t_1\\)<\/span> \uff08L-10\uff09<\/p>\n<p><span class=\"mathjax-text\">\\(= \\displaystyle \\frac{1}{3} R_{ON} (I_{D1}^{\\hspace{0.5em} 2} + I_{D1} I_{D2} + I_{D2}^{\\hspace{0.5em} 2}) t_1 f \\, [W]\\)<\/span> \uff08L-11\uff09<\/p>\n<section class=\"c-section-download\">\n<h2 class=\"c-ttl-4\">\u3010\u8d44\u6599\u4e0b\u8f7d\u3011SiC\u529f\u7387\u5143\u5668\u4ef6\u57fa\u7840<\/h2>\n<div class=\"fbox\">\n<p class=\"c-txt-2 c-txt-2--low fl\">\u672c\u8d44\u6599\u4ecb\u7ecd\u4e86SiC\u7684\u7269\u7406\u6027\u8d28\u548c\u4f18\u70b9\uff0c\u5e76\u901a\u8fc7\u4e0eSi\u5143\u5668\u4ef6\u7684\u6bd4\u8f83\u4ecb\u7ecd\u4e86SiC\u8096\u7279\u57fa\u52bf\u5792\u4e8c\u6781\u7ba1\u548cSiC MOSFET\u7684\u7279\u70b9\u53ca\u4f7f\u7528\u65b9\u6cd5\u4e0a\u7684\u4e0d\u540c\uff0c\u8fd8\u4ecb\u7ecd\u4e86\u96c6\u8bf8\u591a\u4f18\u70b9\u4e8e\u4e00\u8eab\u7684\u5168SiC\u6a21\u5757\u3002<\/p>\n<div class=\"c-block-download__img fr\"><a class=\" is_link_bottom\" href=\"https:\/\/pages.wfjydl.com\/Tech_download38_CN.html\"><img decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2024\/03\/img_down25_02.png\" alt=\"\" \/><\/a><\/div>\n<style>.c-section-download .c-block-download__img {margin-left: 30px;max-width: 260px;}<\/style>\n<\/div>\n<div class=\"c-section-download__btn\"><a class=\"c-btn-1 c-btn-1--large is_link_bottom\" href=\"https:\/\/pages.wfjydl.com\/Tech_download38_CN.html\">\u4e0b\u8f7d<\/a><\/div>\n<\/section>\n","protected":false},"excerpt":{"rendered":"\u6587\u672c\u5c06\u4ecb\u7ecd\u5982\u4f55\u6839\u636e\u5f00\u5173\u6ce2\u5f62\u8ba1\u7b97\u4f7f\u7528\u4e86SiC MOSFET\u7684\u5f00\u5173\u7535\u8def\u4e2d\u7684SiC MOSFET\u7684\u635f\u8017\u3002\u8fd9\u662f\u4e00\u79cd\u5728\u7ebf\u6027\u8fd1\u4f3c\u7684\u6709\u6548\u8303\u56f4\u5185\u5bf9\u5f00\u5173\u6ce2\u5f62\u8fdb\u884c\u5206\u5272\uff0c\u5e76\u4f7f\u7528\u8fd1\u4f3c\u516c\u5f0f\u8ba1\u7b97\u529f\u7387\u635f\u8017\u7684\u65b9\u6cd5\u3002 \u5f00\u5173\u6ce2\u5f62\u7684\u6d4b\u91cf\u65b9\u6cd5 \u901a\u8fc7\u6ce2\u5f62\u7684\u7ebf\u6027\u8fd1 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