{"id":28509,"date":"2025-12-10T09:03:53","date_gmt":"2025-12-10T01:03:53","guid":{"rendered":"https:\/\/techclass.wfjydl.com\/?p=28509"},"modified":"2025-12-09T11:08:14","modified_gmt":"2025-12-09T03:08:14","slug":"%e4%bb%80%e4%b9%88%e6%98%af%e5%bc%80%e5%85%b3%e5%99%aa%e5%a3%b0%ef%bc%9f%e5%bc%80%e5%85%b3%e7%94%b5%e6%ba%90%e4%b8%ad%e4%ba%a7%e7%94%9f%e7%9a%84%e5%99%aa%e5%a3%b0%e5%8f%8a%e5%85%b6%e5%af%b9%e7%ad%96","status":"publish","type":"post","link":"https:\/\/techclass.wfjydl.com\/knowledge\/emc\/nowisee\/18796","title":{"rendered":"\u4ec0\u4e48\u662f\u5f00\u5173\u566a\u58f0\uff1f\u5f00\u5173\u7535\u6e90\u4e2d\u4ea7\u751f\u7684\u566a\u58f0\u53ca\u5176\u5bf9\u7b56"},"content":{"rendered":"\\(\\)\n<div class=\"toc\">\n<p class=\"toc-title\">\u76ee\u5f55<\/p>\n<ul class=\"toc-list\">\n<li><a href=\"#toc1\"><span class=\"contentstable-number\">1<\/span> \u4ec0\u4e48\u662f\u5f00\u5173\u566a\u58f0\uff1f<\/a><\/li>\n<li><a href=\"#toc5\"><span class=\"contentstable-number\">2<\/span> DC-DC\u8f6c\u6362\u5668\u4e2d\u5f00\u5173\u566a\u58f0\u7684\u4ea7\u751f\u539f\u7406<\/a><\/li>\n<li><a href=\"#toc6\"><span class=\"contentstable-number\">3<\/span> \u5dee\u6a21\u566a\u58f0\u4e0e\u5171\u6a21\u566a\u58f0\uff1a\u6210\u56e0\u53ca\u5bf9\u7b56<\/a><\/li>\n<li><a href=\"#toc11\"><span class=\"contentstable-number\">4<\/span> \u4ec0\u4e48\u662f\u4e32\u6270\uff08\u5e73\u884c\u5e03\u7ebf\u95f4\u4ea7\u751f\u7684\u611f\u5e94\u566a\u58f0\uff09<\/a><\/li>\n<li><a href=\"#toc12\"><span class=\"contentstable-number\">5<\/span> \u4f7f\u7528\u7535\u5bb9\u5668\u7684\u5f00\u5173\u566a\u58f0\u5bf9\u7b56<\/a><\/li>\n<li><a href=\"#toc13\"><span class=\"contentstable-number\">6<\/span> \u9488\u5bf9\u8f90\u5c04\u566a\u58f0\uff08\u566a\u58f0\u7535\u573a\u5f3a\u5ea6\uff09\u7684\u5bf9\u7b56<\/a><\/li>\n<li><a href=\"#toc14\"><span class=\"contentstable-number\">7<\/span> \u603b\u7ed3\uff1a\u5f00\u5173\u566a\u58f0\u5bf9\u7b56\u4e0e\u7535\u8def\u677f\u5e03\u5c40\u7684\u91cd\u8981\u6027<\/a><\/li>\n<\/ul>\n<\/div>\n<p>\u5f00\u5173\u566a\u58f0\u662f\u7531\u7535\u6d41\u7a81\u7136\u901a\u65ad\uff08ON\/OFF\uff09\u5207\u6362\u5f15\u53d1\u7684\u9ad8\u9891\u632f\u94c3\uff0c\u5c24\u5176\u5e38\u89c1\u4e8e\u5f00\u5173\u7535\u6e90\u53ca\u9ad8\u901f\u5de5\u4f5c\u7684\u534a\u5bfc\u4f53\u5668\u4ef6\u4e2d\u3002\u8fd9\u7c7b\u566a\u58f0\u867d\u53ef\u901a\u8fc7\u4f18\u5316\u7535\u8def\u677f\u5e03\u7ebf\u5b9e\u73b0\u964d\u566a\uff0c\u4f46\u9488\u5bf9\u6cc4\u6f0f\u7684\u8f90\u5c04\u566a\u58f0\uff0c\u9700\u91c7\u53d6\u4e13\u95e8\u7684\u5e94\u5bf9\u63aa\u65bd\u3002\u6b64\u5916\uff0c\u5e73\u884c\u5e03\u7ebf\u4e4b\u95f4\u4f1a\u4ea7\u751f\u4e32\u6270\uff0c\u8fdb\u800c\u5f15\u53d1\u611f\u5e94\u566a\u58f0\u3002\u672c\u6587\u4ee5DC-DC\u8f6c\u6362\u5668\u4e3a\u4f8b\uff0c\u8be6\u7ec6\u9610\u8ff0\u5f00\u5173\u566a\u58f0\u7684\u4ea7\u751f\u539f\u7406\u3001\u7535\u5b50\u7535\u8def\u8bbe\u8ba1\u4e2d\u5f00\u5173\u566a\u58f0\u5bf9\u7535\u78c1\u517c\u5bb9\u6027\uff08EMC\uff09\u7b49\u65b9\u9762\u7684\u5f71\u54cd\uff0c\u4ee5\u53ca\u9488\u5bf9\u8fd9\u4e9b\u95ee\u9898\u7684\u6709\u6548\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n<h2 id=\"toc1\">\u4ec0\u4e48\u662f\u5f00\u5173\u566a\u58f0\uff1f<\/h2>\n<p>\u5f00\u5173\u566a\u58f0\u662f\u7535\u5b50\u7535\u8def\u53ca\u7535\u6e90IC\uff08\u96c6\u6210\u7535\u8def\uff09\u5de5\u4f5c\u8fc7\u7a0b\u4e2d\uff0c\u7531\u4e0d\u5fc5\u8981\u7684\u7535\u6d41\u6ce2\u52a8\u5f15\u53d1\u7684\u9ad8\u9891\u632f\u94c3\u3002\u8fd9\u7c7b\u566a\u58f0\u5e38\u89c1\u4e8eDC-DC\u8f6c\u6362\u5668\u3001AC-DC\u8f6c\u6362\u5668\u7b49\u9ad8\u901f\u8fd0\u884c\u7684\u534a\u5bfc\u4f53\u5668\u4ef6\u4e2d\u3002\u5f00\u5173\u566a\u58f0\u53ef\u80fd\u964d\u4f4e\u7535\u8def\u7a33\u5b9a\u6027\uff0c\u8fd8\u53ef\u80fd\u5f15\u53d1\u7535\u78c1\u517c\u5bb9\u6027\uff08EMC\uff09\u4e2d\u7684\u7535\u78c1\u5e72\u6270\uff08EMI\uff09\u76f8\u5173\u95ee\u9898\u3002<\/p>\n<h3 id=\"toc2\">\u5f00\u5173\u566a\u58f0\u7684\u4ea7\u751f\u539f\u56e0<\/h3>\n<p>\u5f00\u5173\u566a\u58f0\u7684\u5e38\u89c1\u539f\u56e0\u662f\u7531\u5f00\u5173\u7535\u6e90\u7b49\u53ef\u9ad8\u901f\u901a\u65ad\u7684\u534a\u5bfc\u4f53\u5668\u4ef6\u5de5\u4f5c\u6240\u5bfc\u81f4\u3002\u7531\u6b64\u4f1a\u4ea7\u751f\u6025\u5267\u7684\u7535\u6d41\u6216\u7535\u538b\u53d8\u5316\uff0c\u8fdb\u800c\u5f15\u53d1\u7eb9\u6ce2\u4e0e\u566a\u58f0\u3002<\/p>\n<h3 id=\"toc3\">\u566a\u58f0\u5bf9\u7b56\uff08\u566a\u58f0\u6d88\u9664\u4e0e\u964d\u4f4e\uff09<\/h3>\n<p>\u9488\u5bf9\u5f00\u5173\u566a\u58f0\u7684\u964d\u4f4e\u4e0e\u6d88\u9664\uff0c\u53ef\u91c7\u53d6\u4ee5\u4e0b\u51e0\u9879\u5bf9\u7b56\uff1a<\/p>\n<ul class=\"nml_li\">\n<li>1. <strong>\u4f7f\u7528\u6ee4\u6ce2\u5668\uff1a<\/strong>\u901a\u8fc7\u4f4e\u901a\u6ee4\u6ce2\u5668\u6216\u9ad8\u901a\u6ee4\u6ce2\u5668\uff0c\u53bb\u9664\u4e0d\u5fc5\u8981\u7684\u9891\u7387\u6210\u5206\u3002<\/li>\n<li>2. <strong>\u914d\u7f6e\u7535\u5bb9\u5668\uff1a<\/strong>\u5728\u7535\u8def\u7684\u5173\u952e\u4f4d\u7f6e\u914d\u7f6e\u7535\u5bb9\u5668\uff0c\u5438\u6536\u7535\u538b\u6ce2\u52a8\u3002<\/li>\n<li>3. <strong>\u7535\u8def\u677f\u5e03\u5c40\u7684\u566a\u58f0\u5bf9\u7b56\uff1a<\/strong>\u5c3d\u91cf\u7f29\u77ed\u5e03\u7ebf\u957f\u5ea6\uff0c\u901a\u8fc7\u4f18\u5316\u5e03\u5c40\u964d\u4f4e\u5f00\u5173\u566a\u58f0\uff08\u4f20\u5bfc\u566a\u58f0\uff09\u3002<\/li>\n<li>4. <strong>\u7f13\u51b2\u7535\u8def\uff1a<\/strong>\u4f7f\u7528\u7f13\u51b2\u7535\u8def\u5438\u6536\u632f\u94c3\uff0c\u4ece\u800c\u53ef\u4ee5\u964d\u4f4e\u5f00\u5173\u566a\u58f0\uff08\u8f90\u5c04\u566a\u58f0\uff09\u3002<\/li>\n<li>5. <strong>\u81ea\u4e3e\u7535\u8def\u7684\u566a\u58f0\u5bf9\u7b56\uff1a<\/strong>\u63d2\u5165\u7535\u963b\uff0c\u80fd\u591f\u964d\u4f4e\u5f00\u5173\u566a\u58f0\uff08\u8f90\u5c04\u566a\u58f0\uff09\u3002<\/li>\n<\/ul>\n<h3 id=\"toc4\">\u566a\u58f0\u5bf9\u7b56\u7684\u91cd\u8981\u6027<\/h3>\n<p>\u901a\u8fc7\u91c7\u53d6\u6709\u6548\u7684\u5f00\u5173\u566a\u58f0\u5bf9\u7b56\uff0c\u7535\u8def\u7684\u5de5\u4f5c\u4f1a\u66f4\u52a0\u7a33\u5b9a\uff0c\u6027\u80fd\u4e5f\u80fd\u5f97\u5230\u63d0\u5347\u3002\u5c24\u5176\u5728\u9ad8\u7cbe\u5ea6\u7535\u5b50\u8bbe\u5907\u53ca\u5de5\u4e1a\u9886\u57df\u7684\u5e94\u7528\u4e2d\uff0c\u5f00\u5173\u566a\u58f0\u5bf9\u7b56\u66f4\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\u3002<\/p>\n<p>\u672c\u6587\u540e\u7eed\u5c06\u4ee5DC-DC\u8f6c\u6362\u5668\u4e3a\u4f8b\uff0c\u8be6\u7ec6\u8bb2\u89e3\u6240\u4ea7\u751f\u7684\u5171\u6a21\u566a\u58f0\u548c\u5dee\u6a21\u566a\u58f0\u7684\u76f8\u5173\u539f\u56e0\u53ca\u5bf9\u7b56\uff0c\u6b64\u5916\u8fd8\u4f1a\u6df1\u5165\u8bf4\u660e\u4e32\u6270\u7684\u5b9a\u4e49\u3001\u4ee5\u53ca\u7f13\u51b2\u7535\u8def\u7b49\u7684\u8f90\u5c04\u566a\u58f0\u5e94\u5bf9\u65b9\u6cd5\u3002\u7406\u89e3\u8fd9\u4e00\u7cfb\u5217\u5185\u5bb9\u540e\uff0c\u4fbf\u80fd\u5b9e\u65bd\u66f4\u9ad8\u7ea7\u522b\u7684\u566a\u58f0\u5bf9\u7b56\u3002<\/p>\n<h2 id=\"toc5\">DC-DC\u8f6c\u6362\u5668\u4e2d\u5f00\u5173\u566a\u58f0\u7684\u4ea7\u751f\u539f\u7406<\/h2>\n<p>\u5f00\u5173\u566a\u58f0\u7684\u4ea7\u751f\u539f\u56e0\uff0c\u662f\u7535\u5b50\u7535\u8def\u6216\u7535\u6e90IC\u5de5\u4f5c\u8fc7\u7a0b\u4e2d\u51fa\u73b0\u7684\u4e0d\u5fc5\u8981\u7535\u6d41\u6ce2\u52a8\uff0c\u8fdb\u800c\u5f15\u53d1\u9ad8\u9891\u632f\u94c3\u3002\u4e0b\u9762\u5c06\u4ee5DC-DC\u8f6c\u6362\u5668\u4e3a\u4f8b\uff0c\u5bf9\u5f00\u5173\u566a\u58f0\u8fdb\u884c\u8bf4\u660e\u3002<br \/>\n\u9996\u5148\uff0c\u6211\u4eec\u5c06\u501f\u52a9\u540c\u6b65\u6574\u6d41\u578b\u964d\u538bDC-DC\u8f6c\u6362\u5668\u7684\u7b49\u6548\u7535\u8def\uff0c\u786e\u8ba4\u5f00\u5173\u7535\u6d41\u7684\u8def\u5f84\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2025\/12\/20171114_graf_05.png\" width=\"659\" height=\"171\" \/><\/p>\n<p>\u8bbe\u9ad8\u8fb9\u5f00\u5173\u4e3aSW1\uff0c\u4f4e\u8fb9\u5f00\u5173\u4e3aSW2\u3002\u5f53SW1\u5bfc\u901a\uff08SW2\u65ad\u5f00\uff09\u65f6\uff0c\u7535\u6d41\u8def\u5f84\u4e3a\uff1a\u8f93\u5165\u7535\u5bb9\u5668\u2192SW1\u2192\u7535\u611fL\u2192\u8f93\u51fa\u7535\u5bb9\u5668\u3002\u5f53SW2\u5bfc\u901a\uff08SW1\u65ad\u5f00\uff09\u65f6\uff0c\u7535\u6d41\u8def\u5f84\u4e3a\uff1aSW2\u2192\u7535\u611fL\u2192\u8f93\u51fa\u7535\u5bb9\u5668\u3002\u4e0b\u56fe\u5c55\u793a\u4e86\u8fd9\u4e24\u79cd\u7535\u6d41\u8def\u5f84\u7684\u5dee\u5f02\uff0c\u6bcf\u6b21\u5f00\u5173\u5bfc\u901a\/\u65ad\u5f00\uff08ON\/OFF\uff09\u65f6\uff0c\u7ea2\u8272\u7ebf\u8def\u4e2d\u7684\u7535\u6d41\u53d1\u751f\u5267\u70c8\u53d8\u5316\u3002\u7531\u4e8e\u8be5\u56de\u8def\u7684\u7535\u6d41\u53d8\u5316\u5341\u5206\u9661\u5ced\uff0c\u7535\u8def\u677f\u5e03\u7ebf\u7684\u7535\u611f\u4f1a\u5728\u56de\u8def\u5185\u5f15\u53d1\u9ad8\u9891\u632f\u94c3\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2025\/12\/20171114_graf_06.png\" width=\"660\" height=\"199\" \/><\/p>\n<p>\u4e0b\u56fe\u5c55\u793a\u4e86\u7535\u6e90\u7535\u8def\u7684\u5916\u63a5\u5143\u5668\u4ef6\u53ca\u5b9e\u88c5\u7535\u8def\u677f\u7684\u5bc4\u751f\u5206\u91cf\u4e0e\u632f\u94c3\u4e4b\u95f4\u7684\u5173\u7cfb\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2025\/12\/20171114_graf_07.png\" width=\"626\" height=\"331\" \/><\/p>\n<p>\u4e0a\u56fe\u4e2d\uff0c\u7535\u6d41\u6025\u5267\u53d8\u5316\u7684\u56de\u8def\u91cc\uff0c\u7528\u7ea2\u8272\u6807\u6ce8\u4e86\u5bc4\u751f\u5206\u91cf\u3002<br \/>\n\u5e03\u7ebf\u5b58\u5728\u5e03\u7ebf\u7535\u611f\uff0c\u901a\u5e38\u6bcf1mm\u7ea6\u67091nH\u7684\u7535\u611f\u91cf\u3002\u6b64\u5916\uff0c\u7535\u5bb9\u5668\u5b58\u5728\u7b49\u6548\u4e32\u8054\u7535\u611f\uff08ESL\uff09\uff0cMOSFET \u7684\u5404\u5f15\u811a\u95f4\u5219\u5b58\u5728\u5bc4\u751f\u7535\u5bb9\u3002\u53d7\u8fd9\u4e9b\u56e0\u7d20\u5f71\u54cd\uff0c\u5f00\u5173\u8282\u70b9\u4f1a\u4ea7\u751f\u7ea2\u6846\u56fe\u793a\u6240\u793a100MHz\u81f3300MHz\u7684\u632f\u94c3\u3002\u4ea7\u751f\u7684\u7535\u6d41\u4e0e\u7535\u538b\u53ef\u901a\u8fc7\u4ee5\u4e0b\u4e24\u4e2a\u516c\u5f0f\u8ba1\u7b97\u5f97\u51fa\uff1a<\/p>\n<p>\\(I = C \\times \\frac{dV}{dt}, \\quad V = L \\times \\frac{dI}{dt}\\)<\/p>\n<p>\u8fd9\u79cd\u632f\u94c3\u4f1a\u4ee5\u9ad8\u9891\u5f00\u5173\u566a\u58f0\u7684\u5f62\u5f0f\u4ea7\u751f\u591a\u79cd\u5f71\u54cd\u3002\u867d\u7136\u9700\u8981\u91c7\u53d6\u5e94\u5bf9\u63aa\u65bd\uff0c\u4f46\u7531\u4e8e\u7535\u6e90IC\u672c\u8eab\u65e0\u6cd5\u53bb\u9664\u7535\u8def\u677f\u7684\u5bc4\u751f\u5206\u91cf\uff0c\u56e0\u6b64\u9700\u901a\u8fc7\u7535\u8def\u677f\u5e03\u7ebf\u5e03\u5c40\u53ca\u53bb\u8026\u7535\u5bb9\u5668\u6765\u5e94\u5bf9\u3002\u5173\u4e8e\u7535\u8def\u677f\u5e03\u5c40\uff0c\u5728<a href=\"https:\/\/techclass.wfjydl.com\/knowledge\/dcdc\/dcdc_pwm\/dcdc_pwm03\/2734\">DC-DC\u8f6c\u6362\u5668\u7684\u201c\u7535\u8def\u677f\u5e03\u5c40\u201d\u7ae0\u8282 <\/a>\u4f1a\u5c55\u5f00\u8be6\u7ec6\u8bf4\u660e\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2025\/12\/20171114_graf_08.png\" width=\"514\" height=\"265\" \/><\/p>\n<p>\u5173\u4e8e\u201c<strong>\u5dee\u6a21\u566a\u58f0\u4e0e\u5171\u6a21\u566a\u58f0<\/strong>\u201d\u201c<strong>\u4e32\u6270<\/strong>\u201d\uff0c\u540e\u7eed\u5c06\u8fdb\u884c\u8bf4\u660e\u3002<br \/>\n<a href=\"https:\/\/techclass.wfjydl.com\/knowledge\/emc\/s-emc\/04-s-emc\/8184\">\u5173\u4e8e\u201c\u5171\u6a21\u6ee4\u6ce2\u5668\u201d\uff0c\u8bf7\u53c2\u9605\u672c\u94fe\u63a5\u7684\u5185\u5bb9\u3002<\/a><\/p>\n<h2 id=\"toc6\">\u5dee\u6a21\u566a\u58f0\u4e0e\u5171\u6a21\u566a\u58f0\uff1a\u539f\u56e0\u53ca\u5bf9\u7b56<\/h2>\n<p>\u5f00\u5173\u566a\u58f0\u6240\u5c5e\u7684\u7535\u78c1\u5e72\u6270\uff08EMI\uff09\u4e3b\u8981\u5206\u4e3a\u201c\u4f20\u5bfc\u566a\u58f0\u201d\u548c\u201c\u8f90\u5c04\u566a\u58f0\u201d\u4e24\u5927\u7c7b\u3002<br \/>\n\u4f20\u5bfc\u566a\u58f0\u53ef\u8fdb\u4e00\u6b65\u5206\u4e3a\u4e24\u7c7b\uff1a\u4e00\u7c7b\u662f\u201c\u5dee\u6a21\u566a\u58f0\u201d\uff0c\u53c8\u79f0\u201c\u5e38\u6a21\u566a\u58f0\u201d\u3002\u8fd9\u4e24\u79cd\u79f0\u547c\u6709\u65f6\u53ef\u6839\u636e\u6761\u4ef6\u533a\u5206\u4f7f\u7528\uff0c\u4f46\u672c\u6587\u4e2d\u5c06\u4e8c\u8005\u89c6\u4e3a\u540c\u4e00\u6982\u5ff5\u3002\u53e6\u4e00\u7c7b\u662f\u201c\u5171\u6a21\u566a\u58f0\u201d\u3002\u4e0b\u9762\u7ed3\u5408\u56fe\u793a\u8fdb\u884c\u8bf4\u660e\u3002\u7531\u4e8e\u672c\u6587\u56f4\u7ed5\u7535\u6e90\u76f8\u5173\u5185\u5bb9\u5c55\u5f00\uff0c\u56e0\u6b64\u56fe\u793a\u4ee5\u201c\u5c06\u5e26\u6709\u7535\u8def\u7684\u5370\u5237\u7535\u8def\u677f\uff08PCB\uff09\u88c5\u5165\u5916\u58f3\uff0c\u5e76\u7531\u5916\u90e8\u4f9b\u7535\u201d\u4e3a\u4f8b\u3002<br \/>\n\u9700\u7279\u522b\u6ce8\u610f\u7684\u662f\uff0c\u5373\u4f7f\u5728\u76f8\u540c\u6761\u4ef6\u4e0b\uff0c\u5171\u6a21\u566a\u58f0\u5f15\u53d1\u7684\u8f90\u5c04\u5f3a\u5ea6\u4e5f\u8fdc\u5927\u5e45\u9ad8\u4e8e\u5dee\u6a21\u566a\u58f0\u3002<\/p>\n<h3 id=\"toc7\">\u5dee\u6a21\uff08\u5e38\u6a21\uff09\u566a\u58f0\u4e0e\u5171\u6a21\u566a\u58f0<\/h3>\n<p>\u5dee\u6a21\u566a\u58f0\u662f\u6307\u566a\u58f0\u6e90\u4e32\u8054\u4e8e\u7535\u6e90\u7ebf\u8def\u4e2d\uff0c\u566a\u58f0\u7535\u6d41\u4e0e\u7535\u6e90\u7535\u6d41\u6d41\u5411\u4e00\u81f4\uff0c\u4e14\u4ea7\u751f\u4e8e\u7535\u6e90\u7ebf\u8def\u4e4b\u95f4\u7684\u566a\u58f0\u3002\u7531\u4e8e\u5f80\u8fd4\u65b9\u5411\u76f8\u53cd\uff0c\u6545\u79f0\u4e3a\u201c\u5dee\u6a21\uff08Differential mode\uff09\u201d\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2025\/12\/swiching_nowise01.png\" alt=\"\" width=\"325\" height=\"309\" \/><\/p>\n<div class=\"img_with_txt\">\n<ul class=\"img_list\">\n<li>\u566a\u58f0\u7535\u6d41\u4e0e\u7535\u6e90\u7535\u6d41\u6cbf\u540c\u4e00\u8def\u5f84\u6d41\u52a8<\/li>\n<li>\u566a\u58f0\u7535\u538b\u4ea7\u751f\u4e8e\u7535\u6e90\u7ebf\u8def\u4e4b\u95f4<\/li>\n<\/ul>\n<\/div>\n<p>\u5171\u6a21\u566a\u58f0\u662f\u6307\u901a\u8fc7\u6742\u6563\u7535\u5bb9\u7b49\u6cc4\u6f0f\u7684\u566a\u58f0\u7535\u6d41\uff0c\u7ecf\u7531\u5927\u5730\u56de\u6d41\u81f3\u7535\u6e90\u7ebf\u8def\u7684\u566a\u58f0\u3002\u7531\u4e8e\u7535\u6e90\u6b63\u6781\uff08\uff0b\uff09\u4e0e\u8d1f\u6781\uff08\uff0d\uff09\u4fa7\u7684\u566a\u58f0\u7535\u6d41\u6d41\u5411\u76f8\u540c\uff0c\u56e0\u6b64\u88ab\u79f0\u4e3a\u201c\u5171\u6a21\uff08Common mode\uff09\u201d\u566a\u58f0\u3002\u8fd9\u7c7b\u566a\u58f0\u4e0d\u4f1a\u5728\u7535\u6e90\u7ebf\u8def\u4e4b\u95f4\u4ea7\u751f\u566a\u58f0\u7535\u538b\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2025\/12\/swiching_nowise02.png\" alt=\"\" width=\"377\" height=\"312\" \/><\/p>\n<div class=\"img_with_txt\">\n<ul class=\"img_list\">\n<li>\u7535\u6e90\u7ebf\u8def\u4e4b\u95f4\u4e0d\u4f1a\u4ea7\u751f\u566a\u58f0\u7535\u538b<\/li>\n<li>\u7535\u6e90\u7ebf\u8def\u4e0e\u57fa\u51c6GND\u4e4b\u95f4\u4f1a\u4ea7\u751f\u566a\u58f0\u7535\u538b<\/li>\n<li>\u7535\u6e90\u6b63\u6781\u3001\u8d1f\u6781\u4fa7\u7684\u566a\u58f0\u7535\u6d41\u6d41\u5411\u76f8\u540c<\/li>\n<\/ul>\n<\/div>\n<p>\u5982\u524d\u6240\u8ff0\uff0c\u8fd9\u4e9b\u5f00\u5173\u566a\u58f0\u5c5e\u4e8e\u4f20\u5bfc\u566a\u58f0\u3002\u4f46\u7531\u4e8e\u566a\u58f0\u7535\u6d41\u4f1a\u5728\u7535\u6e90\u7ebf\u8def\u4e2d\u6d41\u52a8\uff0c\u56e0\u6b64\u4f1a\u4ea7\u751f\u566a\u58f0\u8f90\u5c04\u3002<\/p>\n<p>\u7531\u5dee\u6a21\u566a\u58f0\u5f15\u8d77\u7684\u8f90\u5c04\u7684\u7535\u573a\u5f3a\u5ea6Ed\u53ef\u901a\u8fc7\u5de6\u4e0b\u65b9\u7684\u516c\u5f0f\u6765\u8868\u793a\u3002Id\u4e3a\u5dee\u6a21\u4e2d\u7684\u566a\u58f0\u7535\u6d41\uff0cr\u4e3a\u5230\u89c2\u6d4b\u70b9\u7684\u8ddd\u79bb\uff0cf\u4e3a\u566a\u58f0\u9891\u7387\u3002\u5dee\u6a21\u566a\u58f0\u4f1a\u4ea7\u751f\u566a\u58f0\u7535\u6d41\u73af\uff0c\u56e0\u6b64\u73af\u8def\u9762\u79efS\u662f\u975e\u5e38\u91cd\u8981\u7684\u56e0\u7d20\u3002\u5982\u56fe\u548c\u516c\u5f0f\u6240\u793a\uff0c\u5047\u8bbe\u5176\u4ed6\u56e0\u7d20\u56fa\u5b9a\uff0c\u73af\u8def\u9762\u79ef\u8d8a\u5927\u5219\u7535\u573a\u5f3a\u5ea6\u8d8a\u9ad8\u3002<\/p>\n<p>\u7531\u5171\u6a21\u566a\u58f0\u5f15\u8d77\u7684\u8f90\u5c04\u7684\u7535\u573a\u5f3a\u5ea6Ec\u53ef\u901a\u8fc7\u53f3\u4e0b\u65b9\u7684\u516c\u5f0f\u6765\u8868\u793a\u3002\u5982\u56fe\u548c\u516c\u5f0f\u6240\u793a\uff0c\u7ebf\u7f06\u957f\u5ea6L\u662f\u975e\u5e38\u91cd\u8981\u7684\u56e0\u7d20\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2025\/12\/swiching_nowise03.png\" alt=\"\" width=\"357\" height=\"334\" \/><\/p>\n<p>\u8fd9\u91cc\uff0c\u4e3a\u4e86\u786e\u8ba4\u5404\u7c7b\u566a\u58f0\u5f15\u53d1\u8f90\u5c04\u7684\u7279\u5f81\uff0c\u6211\u4eec\u5c1d\u8bd5\u4ee3\u5165\u5b9e\u9645\u6570\u503c\u8ba1\u7b97\u7535\u573a\u5f3a\u5ea6\uff08*1\uff09\u3002\u6240\u6709\u6761\u4ef6\u4fdd\u6301\u5b8c\u5168\u4e00\u81f4\uff0c\u7535\u573a\u5f3a\u5ea6\u7684\u89c2\u6d4b\u70b9\u7528\u84dd\u8272\u5706\u70b9\u6765\u8868\u793a\u3002<br \/>\n<span class=\"txt_sml\">*1\uff1a\u516c\u5f0f\u51fa\u5904\u2014\u2014\u300aEMC\u5de5\u5b66\u8be6\u89e3 \u5b9e\u7528\u964d\u566a\u6280\u6cd5\u300b\uff0c\u4f5c\u8005\uff1a\u4ea8\u5229\u30fbW\u30fb\u5965\u7279\uff08Henry W. Ott\uff09\uff0c\u4e1c\u4eac\u7535\u673a\u5927\u5b66\u51fa\u7248\u793e<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2025\/12\/swiching_nowise04.png\" alt=\"\" width=\"444\" height=\"144\" \/><\/p>\n<h4 id=\"toc8\">\u5dee\u6a21\u566a\u58f0\u7684\u7535\u573a\u5f3a\u5ea6\u8ba1\u7b97<\/h4>\n<p>\u5047\u8bbe\u9891\u7387100MHz\u30011\u03bcA\u7684\u5dee\u6a21\u566a\u58f0\u7535\u6d41\uff0c\u5728\u9762\u79ef\u4e3a20cm\u00b2\u7684\u56de\u8def\u4e2d\u6d41\u52a8\u3002<br \/>\n\u5219\u5728\u8ddd\u79bb1m\u5904\uff0890\u5ea6\u65b9\u5411\uff09\u7684\u7535\u573a\u5f3a\u5ea6\u8ba1\u7b97\u5982\u4e0b\uff1a<\/p>\n<p>\\(E_d = 1.316 \\times 10^{-14} \\times \\frac{Id \\cdot f^2 \\cdot S}{r}\\)<br \/>\n<span class=\"formula02\">\\( = 1.316 \\times 10^{-14} \\times \\frac{1\\mu A \\cdot (100MHz)^2 \\cdot (0.2 \\times 0.01)}{1}\\)<\/span><br \/>\n<span class=\"font_color_red formula02\" style=\"color: #993300;\"><strong>\\( = 0.26 \\, \\mu \\text{V\/m}\\)<\/strong><\/span><\/p>\n<h4 id=\"toc9\">\u5171\u6a21\u566a\u58f0\u7684\u7535\u573a\u5f3a\u5ea6\u8ba1\u7b97<\/h4>\n<p>\u5047\u8bbe\u9891\u7387100MHz\u30011\u03bcA\u7684\u5171\u6a21\u566a\u58f0\u7535\u6d41\uff0c\u572820cm\u7684\u7ebf\u7f06\u4e2d\u6d41\u52a8\u3002<br \/>\n\u5219\u5728\u8ddd\u79bb1m\u5904\uff0890\u5ea6\u65b9\u5411\uff09\u7684\u7535\u573a\u5f3a\u5ea6\u8ba1\u7b97\u5982\u4e0b\uff1a<\/p>\n<p>\\(E_d = 1.257 \\times 10^{-6} \\times \\frac{IC \\cdot f^2 \\cdot L}{r}\\)<br \/>\n<span class=\"formula02\">\\( = 1.257 \\times 10^{-6} \\times \\frac{1\\mu A \\cdot 100MHz \\cdot 0.2}{1}\\)<\/span><br \/>\n<span class=\"font_color_red formula02\" style=\"color: #993300;\"><strong>\\( = 25.1 \\, \\mu \\text{V\/m}\\)<\/strong><\/span><\/p>\n<p>\u8be5\u8ba1\u7b97\u7ed3\u679c\u7684\u6838\u5fc3\u8981\u70b9\u662f\uff1a\u5373\u4fbf\u566a\u58f0\u7535\u6d41\u503c\u76f8\u540c\uff0c<span style=\"color: #993300;\"><strong class=\"font_color_red\">\u5171\u6a21\u566a\u58f0\u5f15\u53d1\u7684\u8f90\u5c04\u4e5f\u8fdc\u6bd4\u5dee\u6a21\u566a\u58f0\u5f3a\u70c8<\/strong><\/span>\uff08\u672c\u793a\u4f8b\u4e2d\u7ea6\u4e3a100\u500d\uff09\u3002\u65e0\u8bba\u5982\u4f55\uff0c\u82e5\u8fd9\u4e9b\u4f20\u5bfc\u566a\u58f0\u4e0e\u8f90\u5c04\u566a\u58f0\uff08\u5373\u7535\u78c1\u5e72\u6270EMI\uff09\u8d85\u51fa\u5141\u8bb8\u8303\u56f4\uff0c\u5c31\u5fc5\u987b\u91c7\u53d6\u566a\u58f0\u5bf9\u7b56\u3002\u5c24\u5176\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5728\u8003\u8651\u8f90\u5c04\u566a\u58f0\u5bf9\u7b56\u65f6\uff0c\u9488\u5bf9\u5171\u6a21\u566a\u58f0\u7684\u9632\u63a7\u5c24\u4e3a\u5173\u952e\u3002<\/p>\n<p>\u5173\u4e8e\u5177\u4f53\u5bf9\u7b56\uff0c\u540e\u7eed\u5c06\u6309\u987a\u5e8f\u9010\u6b65\u8bf4\u660e\u3002\u5176\u4e2d\u6700\u57fa\u7840\u7684\u539f\u5219\u6027\u5bf9\u7b56\u5982\u4e0b\uff1a\u5bf9\u4e8e\u5dee\u6a21\u566a\u58f0\uff0c\u9700\u51cf\u5c0f\u56de\u8def\u9762\u79efS\uff08\u4f8b\u5982\u5c06\u7ebf\u7f06\u6539\u4e3a\u7ede\u5408\u7ebf\uff09\uff0c\u5bf9\u4e8e\u5171\u6a21\u566a\u58f0\uff0c\u5219\u5e94\u5c3d\u91cf\u7f29\u77ed\u7ebf\u7f06\u957f\u5ea6\u3002\u4f46\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u5f80\u5f80\u4f1a\u53d7\u5230\u5b89\u88c5\u5e03\u5c40\u6216\u6750\u6599\u7b49\u56e0\u7d20\u7684\u9650\u5236\uff0c\u56e0\u6b64\u9700\u8003\u8651\u589e\u8bbe\u6ee4\u6ce2\u5668\u7b49\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n<p>\u672c\u8282\u6838\u5fc3\u76ee\u6807\u662f\u8ba9\u8bfb\u8005\u5148\u7406\u89e3\u566a\u58f0\u7684\u79cd\u7c7b\u4e0e\u57fa\u672c\u7279\u6027\u3002<\/p>\n<h3 id=\"toc10\">\u4ec0\u4e48\u662fEMC\uff1f<\/h3>\n<p>\u201cEMC\uff08\u7535\u78c1\u517c\u5bb9\u6027\uff09\u201d\u662f\u4ec0\u4e48\uff1f\u5173\u4e8e\u5176\u4e0e\u201cEMI\uff08\u7535\u78c1\u5e72\u6270\uff09\u201d\u201cEMS\uff08\u7535\u78c1\u654f\u611f\u6027\uff09\u201d\u7684\u542b\u4e49\u533a\u522b\u53ca\u4f7f\u7528\u573a\u666f\u5dee\u5f02\uff0c\u4e0b\u6587\u8fdb\u884c\u4e86\u8be6\u7ec6\u8bf4\u660e\u3002<br \/>\n<a href=\"https:\/\/techclass.wfjydl.com\/knowledge\/emc\/s-emc\/01-s-emc\/6347\">https:\/\/techclass.wfjydl.com\/knowledge\/emc\/s-emc\/01-s-emc\/6347<\/a><\/p>\n<h2 id=\"toc11\">\u4e32\u6270\uff08\u5e73\u884c\u5e03\u7ebf\u95f4\u4ea7\u751f\u7684\u611f\u5e94\u566a\u58f0\uff09<\/h2>\n<p>\u4e32\u6270\u6307\u7684\u662f\u5728\u5e73\u884c\u5e03\u7f6e\u7684\u5e03\u7ebf\u4e4b\u95f4\uff0c\u4fe1\u53f7\u6216\u566a\u58f0\u975e\u9884\u671f\u76f8\u4e92\u4f20\u9012\u7684\u73b0\u8c61\u3002\u8fd9\u4e00\u95ee\u9898\u5728\u6a21\u62df\u901a\u4fe1\u53ca\u97f3\u9891\u9886\u57df\u4e5f\u88ab\u79f0\u4e3a\u201c\u6f0f\u8bdd\u201d\uff0c\u5c24\u5176\u5728\u6a21\u62df\u7535\u8bdd\u4e2d\u66fe\u662f\u6781\u4e3a\u5e38\u89c1\u7684\u95ee\u9898\u3002\u6b64\u5916\uff0c\u8be5\u73b0\u8c61\u8fd8\u53ef\u79f0\u4e3a\u201c\u6df7\u7ebf\u201d\u6216\u201c\u4e32\u97f3\u5e72\u6270\u201d\u3002<\/p>\n<p>\u8fd9\u79cd\u4e0d\u5fc5\u8981\u7684\u4fe1\u53f7\u4f20\u9012\uff0c\u662f\u7531\u5e03\u7ebf\u95f4\u5b58\u5728\u7684\u6742\u6563\uff08\u5bc4\u751f\uff09\u7535\u5bb9\u53ca\u4e92\u611f\u5f15\u8d77\u7684\u3002\u6bd4\u5982\u8bf4\uff0c\u5728\u5370\u5237\u7535\u8def\u677f\uff08PCB\uff09\u7684\u8584\u819c\u5e03\u7ebf\u7b49\u573a\u666f\u4e2d\u5c24\u4e3a\u663e\u8457\u3002\u6b64\u7c7b\u573a\u666f\u4e0b\u7684\u4fe1\u53f7\u4f20\u9012\u901a\u5e38\u88ab\u5f52\u4e3a\u201c\u611f\u5e94\u566a\u58f0\u201d\u3002<\/p>\n<p>\u4e32\u6270\u73b0\u8c61\u7684\u6839\u672c\u539f\u56e0\u6709\u4e24\u70b9\uff1a\u4e00\u662f\u6742\u6563\uff08\u5bc4\u751f\uff09\u7535\u5bb9\u5bfc\u81f4\u7684\u9759\u7535\u8026\u5408\uff0c\u4e8c\u662f\u4e92\u611f\u5f15\u53d1\u7684\u7535\u78c1\u8026\u5408\u3002\u672c\u6587\u5c06\u8be6\u7ec6\u8bb2\u89e3\u8fd9\u4e9b\u6210\u56e0\u673a\u5236\u3001\u5177\u4f53\u5e94\u5bf9\u65b9\u6cd5\uff0c\u4ee5\u53ca\u4e3a\u5e2e\u52a9\u7406\u89e3\u800c\u7b80\u5316\u7684\u7b49\u6548\u7535\u8def\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2025\/12\/swiching_nowise05.png\" alt=\"\" width=\"658\" height=\"369\" \/><\/p>\n<p>\u4e24\u79cd\u60c5\u51b5\u5747\u7ed9\u51fa\u4e86\u566a\u58f0\u7535\u538bVn\u7684\u516c\u5f0f\u3002\u8be5\u7535\u538b\u5728\u566a\u58f0\u6e90\u5e03\u7ebf\uff08\u5e03\u7ebf1\uff09\u5411\u90bb\u8fd1\u5e03\u7ebf\uff08\u5e03\u7ebf2\uff09\u8026\u5408\u65f6\u4ea7\u751f\u3002R\u4e3a\u7535\u963b\u503c\u3001C\u4e3a\u7535\u5bb9\u503c\u3001M\u4e3a\u4e92\u611f\u7cfb\u6570\u3001Vs\u4e3a\u566a\u58f0\u6e90\u7535\u538b\u3001Is\u4e3a\u566a\u58f0\u6e90\u7535\u6d41\u3002<\/p>\n<p>\u9700\u660e\u786e\u7684\u662f\u5e73\u884c\u5e03\u7ebf\u4e4b\u95f4\u4f1a\u4ea7\u751f\u4e32\u6270\u3002\u6b64\u5916\uff0c\u5f53\u5e03\u7ebf\u76f8\u4e92\u5782\u76f4\u65f6\uff0c\u5bc4\u751f\u7535\u5bb9\u53ca\u4e92\u611f\u4f1a\u663e\u8457\u51cf\u5c0f\u3002<\/p>\n<h2 id=\"toc12\">\u7535\u5bb9\u5668\u7684\u6291\u5236\u5f00\u5173\u566a\u58f0\u5bf9\u7b56<\/h2>\n<p>\u5728\u5bf9\u5f00\u5173\u566a\u58f0\u7684\u57fa\u672c\u7406\u89e3\u9010\u6b65\u52a0\u6df1\u540e\uff0c\u63a5\u4e0b\u6765\u6211\u4eec\u8be6\u7ec6\u5b66\u4e60\u5b9e\u9645\u7684\u566a\u58f0\u5bf9\u7b56\u3002\u5176\u4e2d\uff0c\u7535\u5bb9\u5668\u5728\u566a\u58f0\u6291\u5236\u4e2d\u662f\u975e\u5e38\u91cd\u8981\u7684\u5143\u4ef6\u3002<\/p>\n<p>\u5728\u201c\u4f7f\u7528\u7535\u5bb9\u5668\u7684\u5f00\u5173\u566a\u58f0\u5bf9\u7b56\u201d\u4e2d\uff0c\u8be6\u7ec6\u4ecb\u7ecd\u4e86\u7535\u5bb9\u5668\u7684\u963b\u6297\u7279\u6027\uff0c\u4ee5\u53caESR\u3001ESL\u7b49\u53c2\u6570\u5bf9\u566a\u58f0\u7684\u5f71\u54cd\u673a\u5236\u3002\u6b64\u5916\uff0c\u8fd8\u4ecb\u7ecd\u4e86\u53bb\u8026\u7535\u5bb9\u5668\u7684\u6709\u6548\u4f7f\u7528\u65b9\u6cd5\uff0c\u4ee5\u53ca\u9488\u5bf9\u9ad8\u9891\u566a\u58f0\u6291\u5236\u7684\u7279\u6b8a\u6ce8\u610f\u4e8b\u9879\u3002<\/p>\n<p>\u611f\u5174\u8da3\u7684\u8bfb\u8005\uff0c\u6b22\u8fce\u524d\u5f80\u201c\u4f7f\u7528\u7535\u5bb9\u5668\u7684\u5f00\u5173\u566a\u58f0\u5bf9\u7b56\u201d\u9875\u9762\u8fdb\u4e00\u6b65\u4e86\u89e3\u3002\u8be5\u9875\u9762\u6db5\u76d6\u4e86\u5927\u91cf\u5b9e\u7528\u77e5\u8bc6\uff0c\u80fd\u5e2e\u52a9\u60a8\u5728\u5f00\u5173\u7535\u6e90\u7684\u566a\u58f0\u5bf9\u7b56\u4e0a\u66f4\u8fdb\u4e00\u6b65\uff0c\u4e3a\u8bbe\u8ba1\u66f4\u9ad8\u6027\u80fd\u7684\u7535\u5b50\u7535\u8def\u63d0\u4f9b\u652f\u6301\u3002<\/p>\n<p><a href=\"https:\/\/techclass.wfjydl.com\/knowledge\/emc\/s-emc\/03-s-emc\/7586\">\u524d\u5f80\u201c\u4f7f\u7528\u7535\u5bb9\u5668\u7684\u566a\u58f0\u5bf9\u7b56\u201d\u9875\u9762<\/a><\/p>\n<h2 id=\"toc13\">\u8f90\u5c04\u566a\u58f0\uff08\u566a\u58f0\u7535\u573a\u5f3a\u5ea6\uff09\u7684\u6291\u5236\u5bf9\u7b56<\/h2>\n<p><strong>\u4ec0\u4e48\u662f\u8f90\u5c04\u566a\u58f0\uff08\u566a\u58f0\u7535\u573a\u5f3a\u5ea6\uff09\uff1f<\/strong><\/p>\n<p>\u5728DC-DC\u8f6c\u6362\u5668\u7684\u5f00\u5173\u566a\u58f0\u6291\u5236\u4e2d\uff0c\u8f90\u5c04\u566a\u58f0\uff08\u566a\u58f0\u7535\u573a\u5f3a\u5ea6\uff09\u662f\u53e6\u4e00\u9879\u5fc5\u987b\u8003\u8651\u7684\u5173\u952e\u5185\u5bb9\u3002\u8f90\u5c04\u566a\u58f0\u7531\u5f00\u5173\u5bfc\u901a\u4e0e\u5173\u65ad\u6ce2\u5f62\u7684\u4e0a\u5347\u6cbf\/\u4e0b\u964d\u6cbf\u659c\u7387\u53ca\u632f\u94c3\u5f15\u8d77\uff0c\u5176\u9891\u7387\u5e26\u5bbd\u7ea6\u4e3a100MHz\uff5e300MHz\u3002<\/p>\n<p>\u5f00\u5173\u7535\u6e90\u7535\u538b\u4e0a\u5347\u6cbf\u4e0e\u4e0b\u964d\u6cbf\u7684\u632f\u94c3\uff0c\u4e3b\u8981\u7531MOSFET\u4e0e\u8f93\u5165\u7535\u5bb9\u5668\u4e4b\u95f4\u7684\u5e03\u7ebf\u7535\u611f\u5bfc\u81f4\u3002\u901a\u8fc7\u4f18\u5316\u8f93\u5165\u7535\u5bb9\u5668\u7684\u5e03\u5c40\u6d89\u53ca\u4e0e\u5e03\u7ebf\u65b9\u5f0f\uff0c\u53ef\u6709\u6548\u964d\u4f4e\u6b64\u7c7b\u566a\u58f0\u3002<\/p>\n<p><strong>\u901a\u8fc7\u589e\u8bbe\u7f13\u51b2\u7535\u8def\u7684\u5f00\u5173\u566a\u58f0\u5bf9\u7b56<\/strong><\/p>\n<p>\u5f53DC-DC\u8f6c\u6362\u5668\u7535\u8def\u7684\u8f90\u5c04\u566a\u58f0\u8d85\u51fa\u8bbe\u5907\u5fc5\u987b\u6ee1\u8db3\u7684\u5408\u89c4\u6807\u51c6\u65f6\uff0c\u53ef\u91c7\u53d6\u5e73\u7f13\u5f00\u5173\u6ce2\u5f62\u548c\u589e\u8bbe\u7f13\u51b2\u7535\u8def\u7684\u65b9\u6cd5\u3002<\/p>\n<p>\u589e\u8bbe\u7f13\u51b2\u7535\u8def\u662f\u964d\u4f4e\u5f00\u5173\u566a\u58f0\u4e2d\u5e7f\u6cdb\u5e94\u7528\u7684\u65b9\u6cd5\u3002\u9488\u5bf9\u5f00\u5173\u8282\u70b9\u7684\u566a\u58f0\u964d\u4f4e\uff0c\u9700\u5728\u8f93\u51fa\u7aef\u914d\u7f6e\u7f13\u51b2\u7535\u8def\uff1b\u800c\u9488\u5bf9\u8f93\u5165\u7aef\u566a\u58f0\uff0c\u5219\u9700\u5728\u8f93\u5165\u7aef\u589e\u8bbe\u7f13\u51b2\u7535\u8def\u3002\u672c\u793a\u4f8b\u4e2d\uff0c\u901a\u8fc7\u5728\u5f00\u5173\u8282\u70b9\u4e0e\u63a5\u5730\u7aef\u4e4b\u95f4\u589e\u8bbe\u7535\u963b\u4e0e\u7535\u5bb9\uff0c\u5229\u7528\u7535\u963b\u6d88\u8017\u5f00\u5173\u632f\u94c3\u4ea7\u751f\u7684\u9ad8\u9891\u80fd\u91cf\uff0c\u4ece\u800c\u5b9e\u73b0\u632f\u94c3\u6291\u5236\u6548\u679c\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2025\/12\/swiching_nowise06.png\" alt=\"\" width=\"459\" height=\"324\" \/><\/p>\n<p>\u4f46\u662f\uff0c\u589e\u8bbe\u7f13\u51b2\u7535\u8def\u4f1a\u4ea7\u751f\u989d\u5916\u635f\u8017\u3002\u82e5\u4e3a\u63d0\u5347\u6291\u5236\u6548\u679c\u800c\u589e\u5927\u7535\u5bb9\u5bb9\u91cf\uff0c\u7535\u963b\u9700\u6ee1\u8db3\u76f8\u5e94\u7684\u529f\u7387\u8010\u53d7\u8981\u6c42\u3002\u4ee5\u4e0b\u662f\u7f13\u51b2\u7535\u8def\u635f\u8017\u7684\u8ba1\u7b97\u516c\u5f0f\u53ca\u793a\u4f8b\u3002<\/p>\n<p class=\"formula02\">\u7f13\u51b2\u7535\u963b10\u03a9\u3001\u7115\u8363\u7535\u5bb91000pF\u3001\u8f93\u5165\u7535\u538b12V\u3001\u632f\u8361\u9891\u73871MHz\u65f6\u7684\u7535\u963b\u5141\u8bb8\u635f\u8017\uff1a<br \/>\n\u7f13\u51b2\u635f\u8017 P = C \u00d7 V<sup>2<\/sup> \u00d7 fSW<br \/>\n1000pF\u00d712<sup>2<\/sup>\u00d71MHz\uff1d0.144W<br \/>\n*\u7535\u963b\u989d\u5b9a\u529f\u7387\u9700\u9009\u7528 MCR18\uff083216)\u7cfb\u5217\uff1a0.25W\u53ca\u4ee5\u4e0a\u89c4\u683c<\/p>\n<p><strong>\u81ea\u4e3e\u7535\u8def\u7684\u566a\u58f0\u5bf9\u7b56<\/strong><br \/>\n\u5f00\u5173\u566a\u58f0\u7684\u53e6\u4e00\u4e2a\u5bf9\u7b56\u662f\u201c\u5e73\u7f13\u5f00\u5173\u6ce2\u5f62\u7684\u65b9\u6cd5\u201d\u3002<\/p>\n<p>\u91c7\u7528Nch MOSFET\u4f5c\u4e3a\u9ad8\u8fb9\u5f00\u5173\u7684IC\uff0c\u5927\u591a\u914d\u7f6e\u6709BOOT\u5f15\u811a\u3002\u7531\u4e8e\u8be5\u5f15\u811a\u4e0e\u5f00\u5173\u8282\u70b9\u76f8\u8fde\uff0c\u901a\u8fc7\u5728\u5f15\u811a\u5904\u63d2\u5165\u7535\u963b\uff0c\u53ef\u5e73\u7f13\u9ad8\u8fb9MOSFET\u5bfc\u901a\u65f6\u7684\u7535\u538b\u4e0a\u5347\u6cbf\uff0c\u8fdb\u800c\u6291\u5236\u5f00\u5173\u566a\u58f0\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2025\/12\/swiching_nowise07.png\" alt=\"\" width=\"514\" height=\"294\" \/><\/p>\n<h2 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