{"id":26571,"date":"2024-11-05T00:00:23","date_gmt":"2024-11-04T16:00:23","guid":{"rendered":"https:\/\/techclass.wfjydl.com\/?p=26571"},"modified":"2025-11-13T15:19:23","modified_gmt":"2025-11-13T07:19:23","slug":"%e7%94%b5%e6%ba%90%e7%94%b5%e8%b7%af%e7%9a%84%e4%b8%83%e5%a4%a7%e6%a0%87%e9%85%8d%ef%bc%9a%e4%bb%8e%e4%bd%8e%e5%99%aa%e5%a3%b0%e5%9e%8b%e5%88%b0%e5%8d%87%e5%8e%8b%e5%9e%8b%e5%85%a8%e8%a6%86%e7%9b%96","status":"publish","type":"post","link":"https:\/\/techclass.wfjydl.com\/knowledge\/dcdc\/s-dcdc\/20486","title":{"rendered":"\u7535\u6e90\u7535\u8def\u7684\u4e03\u5927\u6807\u914d\uff1a\u4ece\u4f4e\u566a\u58f0\u578b\u5230\u5347\u538b\u578b\u5168\u8986\u76d6\uff01"},"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> \u6807\u914d1\uff1a\u5143\u5668\u4ef6\u6570\u91cf\u5c11\u3001\u566a\u58f0\u4f4e\u7684\u201c\u7ebf\u6027\u7a33\u538b\u5668\u201d<\/a><\/li>\n<li><a href=\"#toc5\"><span class=\"contentstable-number\">2<\/span> \u6807\u914d2\uff1a\u9ad8\u6548\u7387\u3001\u652f\u6301\u5347\u538b\u7684\u201cDC-DC\u8f6c\u6362\u5668\u201d<\/a><\/li>\n<li><a href=\"#toc11\"><span class=\"contentstable-number\">3<\/span> \u6807\u914d3\uff1a\u901a\u8fc7MOSFET\u6d88\u9664\u4e86V<sub>F<\/sub>\u635f\u8017\u7684\u201c\u540c\u6b65\u6574\u6d41\u578bDC-DC\u8f6c\u6362\u5668\u201d<\/a><\/li>\n<li><a href=\"#toc16\"><span class=\"contentstable-number\">4<\/span> \u6807\u914d4\uff1a\u53ef\u75311\u8282\u7535\u6c60\u4ea7\u751f3.3V\u62165V\u7535\u538b\u7684\u201c\u5347\u538b\u578bDC-DC\u8f6c\u6362\u5668\u201d<\/a><\/li>\n<li><a href=\"#toc20\"><span class=\"contentstable-number\">5<\/span> \u6807\u914d5\uff1a\u8981\u6784\u5efa100W\u4ee5\u4e0b\u7684\u9694\u79bb\u578bDC-DC\u8f6c\u6362\u5668\uff0c\u5c31\u7528\u201c\u53cd\u6fc0\u5f0f\u8f6c\u6362\u5668\u201d<\/a><\/li>\n<li><a href=\"#toc21\"><span class=\"contentstable-number\">6<\/span> \u6807\u914d6\uff1a\u8981\u6784\u5efa100W\u4ee5\u4e0a\u7684\u9694\u79bb\u578bDC-DC\u8f6c\u6362\u5668\uff0c\u5c31\u7528\u201c\u6b63\u6fc0\u5f0f\u8f6c\u6362\u5668\u201d<\/a><\/li>\n<li><a href=\"#toc22\"><span class=\"contentstable-number\">7<\/span> \u6807\u914d7\uff1a\u5c06\u76f4\u6d41\u7535\u8f6c\u6362\u4e3a\u4ea4\u6d41\u7535\u7684\u5f00\u5173\u7a33\u538b\u5668\u201c\u9006\u53d8\u5668\u201d<\/a><\/li>\n<li><a href=\"#toc23\"><span class=\"contentstable-number\">8<\/span> \u4e13\u680f\uff1a\u7535\u6e90\u6280\u672f\u9886\u57df\u4ee4\u4eba\u8d39\u89e3\u7684\u672f\u8bed<\/a><\/li>\n<\/ul>\n<\/div>\n<p>&nbsp;<\/p>\n<p>\u73b0\u4ee3\u7535\u5b50\u7cfb\u7edf\u901a\u5e38\u88abCPU\u3001FPGA\u3001\u6a21\u62dfIC\u3001RF\u3001\u5929\u7ebf\u7b49\u6570\u767e\u4e43\u81f3\u6570\u5343\u4e2a\u534a\u5bfc\u4f53\u548c\u7535\u5b50\u5143\u5668\u4ef6\u586b\u5f97\u6ee1\u6ee1\u7684\u3002<\/p>\n<p>\u8981\u53d1\u6325\u51fa\u8fd9\u4e9b\u7535\u5b50\u5143\u5668\u4ef6\u7684\u6027\u80fd\uff0c\u79bb\u4e0d\u5f00\u80fd\u591f\u63d0\u4f9b\u7a33\u5b9a\u4e14\u9ad8\u8d28\u91cf\u7684\u7535\u538b\u548c\u7535\u6d41\u7684\u201c\u7535\u6e90\u7535\u8def\u201d\u3002\u8bbe\u8ba1\u7535\u6e90\u7535\u8def\u7684\u7b2c\u4e00\u6b65\u662f\u6b63\u786e\u9009\u62e9\u6ee1\u8db3\u76ee\u6807\u9700\u6c42\u7684\u7535\u8def\u65b9\u5f0f\u3002<\/p>\n<p>\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u5c06\u63a2\u8ba8\u4ece\u5904\u7406\u5668\u5230\u7535\u673a\u9a71\u52a8\u5668\u9886\u57df\u5e38\u7528\u7684\u7535\u6e90\u7535\u8def\u7c7b\u578b\u53ca\u5176\u673a\u5236\u3002<\/p>\n<h3 id=\"toc1\">\u6807\u914d1\uff1a\u5143\u5668\u4ef6\u6570\u91cf\u5c11\u3001\u566a\u58f0\u4f4e\u7684\u201c\u7ebf\u6027\u7a33\u538b\u5668\u201d<\/h3>\n<h4 id=\"toc2\">\u30fb\u5143\u5668\u4ef6\u5c11\uff0c\u5236\u4f5c\u7b80\u5355<\/h4>\n<p>\u56fe1\u4e3a\u91c7\u7528\u4e86\u5185\u7f6e\u63a7\u5236\u7535\u8def\u548c\u529f\u7387\u6676\u4f53\u7ba1\u5355\u7247IC\u201c\u4e09\u7aef\u7a33\u538b\u5668\u201d\u7684\u7ebf\u6027\u7a33\u538b\u5668\u57fa\u672c\u7535\u8def\u56fe\u3002\u4ec5\u7528\u51e0\u4e2a\u5143\u5668\u4ef6\uff083\uff5e5\u4e2a\uff09\u5373\u53ef\u8f7b\u677e\u914d\u7f6e\u8fd9\u79cd\u7a33\u538b\u5668\u3002<\/p>\n<p>\u7531\u4e8e\u63a7\u5236\u7535\u538b\u7684\u5143\u4ef6\u4e0e\u7535\u6e90\u7ebf\u662f\u4e32\u8054\u914d\u7f6e\u7684\uff0c\u6240\u4ee5\u5b83\u4e5f\u88ab\u79f0\u4e3a\u201c\u4e32\u8054\u7a33\u538b\u5668\u201d\u3002<\/p>\n<h4 id=\"toc3\">\u30fb\u566a\u58f0\u4f4e<\/h4>\n<p>\u7ebf\u6027\u7a33\u538b\u5668\u4f7f\u7535\u6d41\u63a7\u5236\u5143\u4ef6\u2014\u2014\u529f\u7387\u6676\u4f53\u7ba1\u5728\u975e\u9971\u548c\u533a\u57df\u8fde\u7eed\u5de5\u4f5c\uff0c\u56e0\u6b64\u5177\u6709\u566a\u58f0\u6bd4\u5f00\u5173\u7535\u6e90\u4f4e\u5f97\u591a\u7684\u7279\u70b9\u3002\u9002\u7528\u4e8e\u5bf9\u4fe1\u53f7\u7eaf\u5ea6\u8981\u6c42\u8f83\u9ad8\u7684\u9ad8\u9891\u7535\u8def\u548c\u6d4b\u91cf\u7528\u7684\u6a21\u62df\u7535\u8def\u3002<\/p>\n<p>\u4f7f\u529f\u7387\u6676\u4f53\u7ba1ON\/OFF\u7684\u5f00\u5173\u7a33\u538b\u5668\uff0c\u7531\u4e8e\u4f53\u79ef\u5c0f\u4e14\u8f93\u51fa\u5927\u800c\u6210\u4e3a\u73b0\u4ee3\u7535\u6e90\u7535\u8def\u7684\u4e3b\u6d41\u4ea7\u54c1\uff0c\u4f46\u5176\u6025\u5267\u7684\u7535\u6d41\u53d8\u5316\u4f1a\u4ea7\u751f\u5f3a\u70c8\u7684\u9ad8\u9891\u7535\u78c1\u566a\u58f0\uff0c\u8fd9\u4e9b\u566a\u58f0\u4f1a\u901a\u8fc7\u5e03\u7ebf\u548c\u7a7a\u95f4\u4f20\u64ad\uff0c\u5bf9\u5468\u56f4\u7cbe\u5bc6\u7535\u8def\u7684\u5de5\u4f5c\u548c\u6027\u80fd\u4ea7\u751f\u4e0d\u5229\u5f71\u54cd\u3002<\/p>\n<p class=\"txt-al-center\" style=\"text-align: center;\"><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2024\/11\/DCDC_7ways_f01.png\" alt=\"\u56f31\uff1a\u30ea\u30cb\u30a2\u30fb\u30ec\u30ae\u30e5\u30ec\u30fc\u30bf\u306e\u57fa\u672c\u56de\u8def\" \/><br \/>\n\u56fe1\uff1a\u7ebf\u6027\u7a33\u538b\u5668\u7684\u57fa\u672c\u7535\u8def<\/p>\n<h4 id=\"toc4\">\u30fb\u9700\u8981\u6563\u70ed\u5668\uff0c\u96be\u4ee5\u5c0f\u578b\u5316<\/h4>\n<p>\u5982\u56fe1\u6240\u793a\uff0c\u7ebf\u6027\u7a33\u538b\u5668\u7684\u7535\u6d41\u63a7\u5236\u5143\u4ef6\u2014\u2014\u529f\u7387\u6676\u4f53\u7ba1\u4f1a\u4ea7\u751f\u4e0b\u9762\u516c\u5f0f\u4e2d\u7684\u635f\u8017P_C\uff0c\u4ece\u800c\u53d1\u70ed\u3002<\/p>\n<p>\\(PC \uff1d (Vin \u2013 Vout) Iout\\) 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2A=10W\uff09\u768440%\u3002\u5373\u4f7f\u8d1f\u8f7d\u5f88\u8f7b\uff0c\u6bd4\u5982\u53ea\u6709500mA\uff0c\u5982\u679c\u4e0d\u7a33\u5b9a\u7684\u8f93\u5165\u7535\u6e90\u7684\u8f93\u51fa\u7535\u538b\u4e0a\u5347\u81f310V\uff0c\u5176\u635f\u8017\u4e5f\u4e0d\u5c0f\uff0c\u8fbe\u5230\uff0810V\uff0d5V\uff09\u00d70.5A=2.5W\uff0c\u6563\u70ed\u5668\u662f\u5fc5\u987b\u8981\u914d\u7684\u4e86\u3002<\/p>\n<p>\u5982\u4e0a\u6240\u8ff0\uff0c\u7ebf\u6027\u7a33\u538b\u5668\u5177\u6709\u566a\u58f0\u4f4e\u3001\u7ec4\u4ef6\u5c11\u7684\u4f18\u70b9\uff0c\u5177\u6709\u53d1\u70ed\u91cf\u5927\u3001\u96be\u4ee5\u5c0f\u578b\u5316\u7684\u7f3a\u70b9\u3002<\/p>\n<h3 id=\"toc5\">\u6807\u914d2\uff1a\u9ad8\u6548\u7387\u3001\u652f\u6301\u5347\u538b\u7684\u201cDC-DC\u8f6c\u6362\u5668\u201d<\/h3>\n<h4 id=\"toc6\">\u30fb\u53d1\u70ed\u91cf\u5c0f<\/h4>\n<p>DC-DC\u8f6c\u6362\u5668\u53ef\u63a7\u5236\u529f\u7387\u6676\u4f53\u7ba1\u7684ON\u548cOFF\u65f6\u95f4\uff0c\u4ee5\u4fdd\u6301\u8f93\u51fa\u7535\u538b\u6052\u5b9a\u3002DC-DC\u8f6c\u6362\u5668\u7684\u6700\u5927\u7279\u70b9\u662f\u63a7\u5236\u5927\u7535\u6d41\u7684\u529f\u7387\u6676\u4f53\u7ba1\u7684\u635f\u8017\u4e3a0W\uff08\u539f\u7406\u4e0a\uff09\uff0c\u5de5\u4f5c\u6548\u7387\u975e\u5e38\u9ad8\u3002<\/p>\n<p>\u5728\u529f\u7387\u6676\u4f53\u7ba1\u5bfc\u901a\uff08ON\uff09\u671f\u95f4\uff0c\u96c6\u7535\u6781\uff08\u6f0f\u6781\uff09\u548c\u53d1\u5c04\u6781\uff08\u6e90\u6781\uff09\u4e4b\u95f4\u7684\u7535\u538b\u4e3a0V\uff0c\u56e0\u6b64\u65e0\u8bba\u6d41\u8fc7\u591a\u5927\u7684\u7535\u6d41\uff0c\u635f\u8017\u4ece\u539f\u7406\u4e0a\u770b\u90fd\u662f0W\u3002\u7531\u4e8e\u5728OFF\u671f\u95f4\u6ca1\u6709\u7535\u6d41\u6d41\u52a8\uff080A\uff09\uff0c\u56e0\u6b64\u539f\u7406\u4e0a\u635f\u8017\u4e5f\u662f0W\u3002<\/p>\n<p>\u800c\u5b9e\u9645\u7684\u7535\u8def\u5728ON\u548cOFF\u65f6\u90fd\u4f1a\u4ea7\u751f\u5fae\u5c0f\u635f\u8017\u3002\u76f8\u6bd4\u7ebf\u6027\u7a33\u538b\u566860-70%\u7684\u6548\u7387\uff0cDC-DC\u8f6c\u6362\u5668\u7684\u6548\u7387\u8981\u9ad8\u5f97\u591a\uff0c\u53ef\u8fbe80-90%\u4ee5\u4e0a\u3002<\/p>\n<h4 id=\"toc7\">\u30fb\u4e0d\u4ec5\u652f\u6301\u964d\u538b\uff0c\u8fd8\u652f\u6301\u5347\u538b\u548c\u5347\u964d\u538b<\/h4>\n<p>\u7ebf\u6027\u7a33\u538b\u5668\u53ea\u80fd\u964d\u4f4e\u8f93\u5165\u7535\u538b\uff0c\u4f46DC-DC\u8f6c\u6362\u5668\u901a\u8fc7\u6539\u53d8\u7535\u8def\u8fde\u63a5\uff0c\u4e0d\u4ec5\u53ef\u4ee5\u8fdb\u884c\u964d\u538b\u5de5\u4f5c\uff0c\u8fd8\u53ef\u4ee5\u8fdb\u884c\u5347\u538b\u3001\u5347\u964d\u538b\u548c\u53cd\u76f8\u5de5\u4f5c\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u53ef\u4ee5\u5c06+5V\u8f6c\u6362\u4e3a\u22125V\uff0c\u6216\u5c06+5V\u8f6c\u6362\u4e3a+12V\u3002\u8fd8\u53ef\u4ee5\u8fdb\u884c\u5347\u964d\u538b\u5de5\u4f5c\uff0c\u6bd4\u5982\u4f7f\u5728+4\uff5e+3.0V\u8303\u56f4\u5185\u53d8\u5316\u7684\u7535\u6e90\u8f93\u51fa3.3V\u7684\u6052\u5b9a\u7535\u538b\u3002<\/p>\n<h4 id=\"toc8\">\u30fbDC-DC\u8f6c\u6362\u673a\u5236<\/h4>\n<p>\u529f\u7387\u6676\u4f53\u7ba1\uff08\\(Tr_{\\text{1}}\\)\uff09\u662f\u7535\u6d41\u63a7\u5236\u5143\u4ef6\uff0c\u80fd\u591f\u4ee5\u6570\u5341kHz\uff5e\u6570MHz\u7684\u9ad8\u9891\u8fdb\u884cON\/OFF\uff08\u5f00\u5173\u9a71\u52a8\uff09\uff0c\u5c06\u8f93\u5165\u7535\u538b\u8f6c\u6362\u4e3a\u6240\u9700\u7535\u538b\u5e76\u8f93\u51fa\u3002\u5728\\(Tr_{\\text{1}}\\)\u5bfc\u901a\uff08ON\uff09\u671f\u95f4\uff0c\u7535\u611f\uff08\\(L_{\\text{1}}\\)\uff09\u88ab\u52b1\u78c1\uff0c\u540c\u65f6\u5411\u8d1f\u8f7d\u4f9b\u7535\u3002\u5728\\(Tr_{\\text{1}}\\)\u5173\u65ad\uff08OFF\uff09\u671f\u95f4\uff0c\\(L_{\\text{1}}\\)\u8bd5\u56fe\u7ee7\u7eed\u4f7f\u7535\u6d41\u6d41\u52a8\uff0c\\(L_{\\text{1}}\\)\u4e2d\u5b58\u50a8\u7684\u7535\u78c1\u80fd\u91cf\u901a\u8fc7\u7eed\u6d41\u4e8c\u6781\u7ba1\\(D_{\\text{1}}\\)\u8fdb\u884c\u6362\u5411\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u5373\u4f7f\u5728\\(Tr_{\\text{1}}\\)\u5173\u65ad\uff08OFF\uff09\u671f\u95f4\uff0c\u8f93\u51fa\u4fa7\u7684\u7535\u6d41\u4e5f\u4f1a\u7ee7\u7eed\u6d41\u52a8\u3002<\/p>\n<p>\u8f93\u5165\u7535\u538b\u548c\u8f93\u51fa\u7535\u538b\u7684\u538b\u5dee\u52a0\u7ed9\u4e86\\(L_{\\text{1}}\\)\uff0c\u7535\u6d41\u5728\\(Tr_{\\text{1}}\\)\u5bfc\u901a\uff08ON\uff09\u671f\u95f4\u9010\u6e10\u589e\u5927\uff0c\u5728\u5173\u65ad\uff08OFF\uff09\u671f\u95f4\u51cf\u5c0f\u3002\\(L_{\\text{1}}\\)\u7684\u7535\u6d41\u6ce2\u52a8\u4f1a\u88ab\u8f93\u51fa\u7535\u5bb9\u5668\\(C_{\\text{1}}\\)\u5e73\u6ed1\u6ee4\u6ce2\u3002\u6700\u7ec8\uff0c\\(L_{\\text{1}}\\)\u7684\u7535\u6d41\u5e73\u5747\u503c\u7ea6\u7b49\u4e8e\u8f93\u51fa\u7535\u6d41\u503c\u3002\u56fe2\u4e3a\u964d\u538b\u578bDC-DC\u8f6c\u6362\u5668\u7684\u57fa\u672c\u7535\u8def\u3002<\/p>\n<p class=\"txt-al-center\" style=\"text-align: center;\"><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2024\/11\/DCDC_7ways_f02.png\" alt=\"\u56f32\uff1a\u964d\u5727\u578bDC-DC\u30b3\u30f3\u30d0\u30fc\u30bf\u306e\u57fa\u672c\u56de\u8def\" \/><br \/>\n\u56fe2\uff1a\u964d\u538b\u578bDC-DC\u8f6c\u6362\u5668\u7684\u57fa\u672c\u7535\u8def<\/p>\n<h4 id=\"toc9\">\u30fb\u8f93\u51fa\u7535\u538b\u4e0ePWM\u4fe1\u53f7\u5360\u7a7a\u6bd4\u4e4b\u95f4\u7684\u5173\u7cfb\u5f0f<\/h4>\n<p>\u56fe3\u663e\u793a\u4e86\u7535\u8def\u5404\u90e8\u5206\u7684\u7535\u538b\u4e0e\u7535\u6d41\u4e4b\u95f4\u7684\u5173\u7cfb\u3002\\(Tr_{\\text{1}}\\)\u5bfc\u901a\uff08ON\uff09\u65f6\u7684\u7535\u611f\u7535\u6d41\u53d8\u5316\u91cf\\(\u2206I_{\\text{L}}\\)\u7531\u4e0b\u9762\u7684\u516c\u5f0f\u8868\u793a\uff1a<\/p>\n<p>\\(\\Delta I_L = \\displaystyle \\frac{V_{\\text{in}} \u2013 V_{\\text{out}}}{L_1} \\times t_{\\text{on}}\\) \uff082\uff09<\/p>\n<p>\u5176\u4e2d\uff0c\\(\u2206I_{\\text{L}}\\)\u662f\\(Tr_{\\text{1}}\\)\u5bfc\u901a\uff08ON\uff09\u65f6\\(L_{\\text{1}}\\)\u7684\u7535\u6d41\u53d8\u5316\u91cf[A]\uff0c\\(V_{\\text{IN}}\\)\u662f\u8f93\u5165\u7535\u538b[V]\uff0c\\(V_{\\text{OUT}}\\)\u662f\u8f93\u51fa\u7535\u538b[V]\uff0c\\(L_{\\text{1}}\\)\u662f\u7535\u611f\u5668\\(L_{\\text{1}}\\)\u7684\u7535\u611f\u503c\uff3bH\uff3d\uff0c\\(t_{\\text{on}}\\)\u662fPWM\u4fe1\u53f7\u7684\u5bfc\u901a\u65f6\u95f4[s]\u3002\\(Tr_{\\text{1}}\\)\u5173\u65ad\uff08OFF\uff09\u65f6\u7684\u7535\u611f\u7535\u6d41\u53d8\u5316\u91cf\\(\u2206I_{\\text{L}}\\)\u7531\u4e0b\u9762\u7684\u516c\u5f0f\u8868\u793a\uff1a<\/p>\n<p>\\(\\Delta I_L = \\displaystyle \\frac{V_{\\text{out}}}{L_1} \\times t_{\\text{off}}\\) \uff083\uff09<\/p>\n<p class=\"txt-al-center\" style=\"text-align: center;\"><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2024\/11\/DCDC_7ways_f03.png\" alt=\"\u56f33\uff1a\u964d\u5727\u578bDC-DC\u30b3\u30f3\u30d0\u30fc\u30bf\u5404\u90e8\u306e\u96fb\u5727\u3068\u96fb\u6d41\" \/><br \/>\n\u56fe3\uff1a\u964d\u538b\u578bDC-DC\u8f6c\u6362\u5668\u5404\u90e8\u5206\u7684\u7535\u538b\u548c\u7535\u6d41<\/p>\n<p>\u5f53\u8f93\u51fa\u7535\u6d41\u6052\u5b9a\u65f6\uff0cON\u65f6\u548cOFF\u65f6\u7684\u7535\u6d41\u53d8\u5316\u91cf\u76f8\u540c\uff0c\u56e0\u6b64\u4e0a\u8ff0\u4e24\u4e2a\u516c\u5f0f\u7684\\(\u2206I_{\\text{L}}\\)\u503c\u76f8\u7b49\u3002<\/p>\n<p>\u7531\u516c\u5f0f\uff082\uff09\u548c\u516c\u5f0f\uff083\uff09\u53ef\u4ee5\u5f97\u5230\u5173\u7cfb\u5f0f\uff084\uff09\uff0c\u5373\u964d\u538b\u578bDC-DC\u8f6c\u6362\u5668\u7684\u8f93\u51fa\u7535\u538b\u4e0e\u201c\u5bfc\u901a\u65f6\u95f4\u4e0e\u5f00\u5173\u5468\u671f\u4e4b\u6bd4\uff08On duty\uff09[%]\u201d\u7684\u5173\u7cfb\u5f0f\u3002<\/p>\n<p>\\(V_{\\text{out}} = \\displaystyle \\frac{t_{\\text{on}}}{t_{\\text{on}} + t_{\\text{off}}} \\times V_{\\text{in}}\\) \uff084\uff09<\/p>\n<p>\u5176\u4e2d\uff0c\\(t_{\\text{off}}\\)\u662fPWM\u4fe1\u53f7\u7684\u5173\u65ad\u65f6\u95f4[s]\u3002<\/p>\n<h4 id=\"toc10\">\u30fb\u901a\u8fc7\u53cd\u9988\u63a7\u5236\u4fdd\u6301\u8f93\u51fa\u7535\u538b\u6052\u5b9a<\/h4>\n<p>\u964d\u538b\u578bDC-DC\u8f6c\u6362\u5668\u4f1a\u59cb\u7ec8\u76d1\u63a7\u8f93\u51fa\u7535\u538b\uff0c\u5e76\u6839\u636e\u5176\u6ce2\u52a8\u6539\u53d8PWM\uff08Pulse Width Modulation\uff0c\u8109\u51b2\u5bbd\u5ea6\u8c03\u5236\uff09\u4fe1\u53f7\u7684\u5360\u7a7a\u6bd4\uff0c\u4ee5\u4fdd\u6301\u8f93\u51fa\u7535\u538b\u6052\u5b9a\u3002\u5f53\u8d1f\u8f7d\u7535\u6d41\u589e\u52a0\u3001\u8f93\u51fa\u7535\u538b\u964d\u4f4e\u65f6\uff0c\u901a\u8fc7\u589e\u52a0PWM\u4fe1\u53f7\u7684\u5bfc\u901a\u65f6\u95f4\uff08\u5373\u529f\u7387\u6676\u4f53\u7ba1\u7684ON\u65f6\u95f4\uff09\uff0c\u53ef\u589e\u52a0\u4ece\u8f93\u5165\u7535\u6e90\u4f9b\u7ed9\u8d1f\u8f7d\u7684\u7535\u6d41\u91cf\u3002<\/p>\n<p>\u53cd\u4e4b\uff0c\u5f53\u8d1f\u8f7d\u7535\u6d41\u51cf\u5c11\u3001\u8f93\u51fa\u7535\u538b\u4e0a\u5347\u65f6\uff0c\u901a\u8fc7\u7f29\u77edPWM\u4fe1\u53f7\u7684\u5bfc\u901a\uff08ON\uff09\u65f6\u95f4\uff0c\u53ef\u4ee5\u51cf\u5c11\u4ece\u8f93\u5165\u7535\u6e90\u4f9b\u7ed9\u8d1f\u8f7d\u7684\u7535\u6d41\u91cf\u3002<\/p>\n<p>\u5982\u56fe4\u6240\u793a\uff0c\u901a\u8fc7\u7531\u4ea7\u751f\u6052\u5b9a\u9891\u7387\u4e09\u89d2\u6ce2\u6216\u952f\u9f7f\u6ce2\u7684\u632f\u8361\u5668\u3001\u6839\u636e\u57fa\u51c6\u7535\u538b\u548c\u8f93\u51fa\u7535\u538b\u4e4b\u95f4\u7684\u7535\u538b\u5dee\u8f93\u51fa\u8d1f\u53cd\u9988\u4fe1\u53f7\u7684\u8bef\u5dee\u653e\u5927\u5668\uff0c\u4ee5\u53ca\u5bf9\u632f\u8361\u5668\u8f93\u51fa\u548c\u8d1f\u53cd\u9988\u4fe1\u53f7\u8fdb\u884c\u6bd4\u8f83\u7684\u6bd4\u8f83\u5668\u7ec4\u6210\u7684\u63a7\u5236\u7535\u8def\uff0c\u53ef\u4ee5\u751f\u6210\u5177\u6709\u9002\u5f53\u5360\u7a7a\u6bd4\u7684\u5f00\u5173\u4fe1\u53f7\u3002<\/p>\n<p class=\"txt-al-center\" style=\"text-align: center;\"><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2024\/11\/DCDC_7ways_f04.png\" alt=\"\u56f34\uff1a\u51fa\u529b\u96fb\u5727\u304c\u5909\u52d5\u3057\u306a\u3044\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u5236\u5fa1\u56de\u8def\u4ed8\u304d\u964d\u5727\u578bDC-DC\u30b3\u30f3\u30d0\u30fc\u30bf\" \/><br \/>\n\u56fe4\uff1a\u5185\u7f6e\u8f93\u51fa\u7535\u538b\u4e0d\u6ce2\u52a8\u7684\u53cd\u9988\u63a7\u5236\u7535\u8def\u7684\u964d\u538b\u578bDC-DC\u8f6c\u6362\u5668<\/p>\n<p>\u5f53\u8f93\u51fa\u7535\u538b\u6ce2\u52a8\u3001\u8d1f\u53cd\u9988\u4fe1\u53f7\u7684\u7535\u5e73\u53d1\u751f\u53d8\u5316\u65f6\uff0c\u6839\u636e\u4e0e\u632f\u8361\u5668\u8f93\u51fa\u7684\u6bd4\u8f83\u7ed3\u679c\uff0c\u5f00\u5173\u9891\u7387\u4fdd\u6301\u6052\u5b9a\uff0c\u5360\u7a7a\u6bd4\u53d8\u5316\u6765\u6821\u6b63\u8f93\u51fa\u7535\u538b\uff0c\u6700\u7ec8\u4f7f\u8f93\u51fa\u7535\u538b\u4fdd\u6301\u6052\u5b9a\u3002<\/p>\n<h3 id=\"toc11\">\u6807\u914d3\uff1a\u901a\u8fc7MOSFET\u6d88\u9664\u4e86VF\u635f\u8017\u7684\u201c\u540c\u6b65\u6574\u6d41\u578bDC-DC\u8f6c\u6362\u5668\u201d<\/h3>\n<h4 id=\"toc12\">\u30fb\u7eed\u6d41\u4e8c\u6781\u7ba1\u7684\u635f\u8017\u4e0d\u5c0f<\/h4>\n<p>\u5728\\(Tr_{\\text{1}}\\)\u5173\u65ad\uff08OFF\uff09\u671f\u95f4\uff0c\\(L_{\\text{1}}\\)\u4e2d\u5b58\u50a8\u7684\u80fd\u91cf\u4f1a\u901a\u8fc7\\(D_{\\text{1}}\\)\u91ca\u653e\u51fa\u6765\u3002\u5f53\u7535\u6d41\u6d41\u8fc7\\(D_{\\text{1}}\\)\u65f6\uff0c\u4f1a\u4ea7\u751f\u635f\u8017\uff0c\u5373\u901a\u8fc7\u201c\u6b63\u5411\u7535\u538b\uff08\\(V_{\\text{F}}\\)\uff09\u4e0e\u7535\u6d41\u4e4b\u79ef\u201d\u6c42\u5f97\u7684\u635f\u8017\u3002\u5373\u4fbf\u662f\u4f4e\\(V_{\\text{F}}\\)\u7684\u8096\u7279\u57fa\u52bf\u5792\u4e8c\u6781\u7ba1\uff08SBD\uff09\uff0c\u5176\u635f\u8017\u4e5f\u67090.4\uff5e1.0V\u3002\u4f8b\u5982\uff0c\u5f53\u6d41\u8fc71A\u7684\u7535\u6d41\u65f6\uff0c\u4f1a\u4ea7\u751f0.4\uff5e1.0W\u7684\u4e0d\u5c0f\u7684\u635f\u8017\u3002<\/p>\n<p>\u7eed\u6d41\u4e8c\u6781\u7ba1\u5373\u4f7f\u5728\\(Tr_{\\text{1}}\\)\u521a\u521a\u5bfc\u901a\uff08ON\uff09\u540e\u4e5f\u4f1a\u4ea7\u751f\u635f\u8017\u3002\u5728\\(Tr_{\\text{1}}\\)\u4eceOFF\u53d8\u4e3aON\u7684\u77ed\u6682\u65f6\u95f4\u5185\uff0c\\(D_{\\text{1}}\\)\u4e0a\u7684\u7535\u538b\u6025\u5267\u5730\u4ece\u6b63\u5411\u5207\u6362\u5230\u53cd\u5411\u3002\u6b64\u65f6\uff0c\u4f1a\u6709\u5f88\u5927\u7684\u5c16\u5cf0\u7535\u6d41\u6d41\u8fc7\u4e8c\u6781\u7ba1\u9633\u6781\u548c\u9634\u6781\u4e4b\u95f4\u7684\u5bc4\u751f\u7535\u5bb9\u3002\u5c3d\u7ba1\u5c16\u5cf0\u7535\u6d41\u6d41\u8fc7\u7684\u65f6\u95f4\u5f88\u77ed\uff0c\u4f46\u9634\u6781\u88ab\u65bd\u52a0\u4e86\u4e0e\u8f93\u5165\u7535\u538b\u76f8\u7b49\u7684\u9ad8\u7535\u538b\u3002\u5728\u80fd\u591f\u8f93\u51fa400V\u76f4\u6d41\u7535\u7684PFC\u540e\u7ea7\u7684DC-DC\u8f6c\u6362\u5668\u7b49\u5668\u4ef6\u4e2d\uff0c\u4f1a\u4ea7\u751f\u4e0d\u5bb9\u5ffd\u89c6\u7684\u8f83\u5927\u635f\u8017\u3002<\/p>\n<p>\u76ee\u524d\u4e3b\u6d41\u7684\u4ea7\u54c1\u662f\u7528MOSFET\u53d6\u4ee3\u4e86\u7eed\u6d41\u4e8c\u6781\u7ba1\u7684\u201c\u540c\u6b65\u6574\u6d41\u578b\u201d\u4ea7\u54c1\uff0c\u4e0b\u9762\u4f1a\u8fdb\u884c\u4ecb\u7ecd\u3002<\/p>\n<p>\u56fe5\u4e3a\u540c\u6b65\u6574\u6d41\u578bDC-DC\u8f6c\u6362\u5668\u7684\u7535\u8def\u3002\u662f\u7528MOSFET\u53d6\u4ee3\u4e86\u56fe4\u6240\u793a\u7684\u666e\u901aDC-DC\u8f6c\u6362\u5668\u4e2d\u7684\u7eed\u6d41\u4e8c\u6781\u7ba1\u7684\u4ea7\u54c1\u3002<\/p>\n<p class=\"txt-al-center\" style=\"text-align: center;\"><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2024\/11\/DCDC_7ways_f05.png\" alt=\"\u56f35\uff1a\u30d5\u30ea\u30fc\u30db\u30a4\u30fc\u30eb\u30fb\u30c0\u30a4\u30aa\u30fc\u30c9\u306e\u640d\u5931\u3092\u89e3\u6d88\u3057\u305f\u540c\u671f\u6574\u6d41\u578bDC-DC\u30b3\u30f3\u30d0\u30fc\u30bf\u306e\u57fa\u672c\u56de\u8def\" \/><br \/>\n\u56fe5\uff1a\u6d88\u9664\u7eed\u6d41\u4e8c\u6781\u7ba1\u635f\u8017\u7684\u540c\u6b65\u6574\u6d41\u578bDC-DC\u8f6c\u6362\u5668\u7684\u57fa\u672c\u7535\u8def<\/p>\n<h4 id=\"toc13\">\u30fb\u4ece\u9ad8\u7535\u538b\u5230\u4f4e\u7535\u538b\uff0cDC-DC\u6807\u914d<\/h4>\n<p>\u5728\u6b27\u6d32\uff0c\u5bf9\u7535\u6e90\u9ad8\u6b21\u8c10\u6ce2\u7684\u89c4\u5b9a\u8d8a\u6765\u8d8a\u4e25\u683c\uff0c60W\u4ee5\u4e0a\u7684\u5f00\u5173\u7a33\u538b\u5668\u8d8a\u6765\u8d8a\u591a\u5730\u91c7\u7528\u529f\u7387\u56e0\u6570\u6821\u6b63\u7535\u8defPFC\uff08Power Factor Correction\uff09\u3002<\/p>\n<p>\u5728PFC\u7684\u540e\u7ea7\uff0c\u9694\u79bb\u578bDC-DC\u8f6c\u6362\u5668\u201cLLC\u7535\u6e90\u201d\u56e0\u5728\u7a33\u5b9a\u7684\u8f93\u5165\u7535\u538b\u4e0b\u53d1\u6325\u51fa\u9ad8\u6548\u7387\u548c\u4f4e\u566a\u58f0\u6027\u80fd\u4f18\u52bf\uff0c\u800c\u5f97\u5230\u5e7f\u6cdb\u5e94\u7528\u3002<\/p>\n<p>\u50cfLLC\u7535\u6e90\u8fd9\u6837\u8f93\u5165\u6570\u767eV\u9ad8\u7535\u538b\u7684\u964d\u538b\u578bDC-DC\u8f6c\u6362\u5668\u4e2d\uff0c\u9700\u8981\u4f7f\u7528\u9ad8\u8010\u538b\u3001\u9ad8\u901f\u7684\u7eed\u6d41\u4e8c\u6781\u7ba1\u3002\u8fd9\u7c7b\u4e8c\u6781\u7ba1\u7684\u6b63\u5411\u7535\u538b\uff08\\(V_{\\text{F}}\\)\uff09\u5f88\u5927\uff0c\u8fbe2V\u4ee5\u4e0a\uff0c\u56e0\u6b64\u5bfc\u901a\u635f\u8017\u4e5f\u4e0d\u5c0f\u3002<\/p>\n<p>\u76ee\u524d\u4e3b\u6d41\u7684\u662f\u7528MOSFET\u53d6\u4ee3\u4e8c\u6781\u7ba1\u8fdb\u884c\u7eed\u6d41\u7684\u540c\u6b65\u6574\u6d41\u578b\u4ea7\u54c1\u3002<\/p>\n<h5 id=\"toc14\">\u4e5f\u9002\u7528\u4e8e\u5927\u89c4\u6a21\u903b\u8f91\u534a\u5bfc\u4f53\u7684\u7535\u6e90<\/h5>\n<p>\u5bf9\u4e8e\u8d85\u4f4e\u7535\u538b\u7535\u8def\u6765\u8bf4\uff0c+0.6\uff5e+0.8V\u7684\\(V_{\\text{F}}\\)\u662f\u4e0d\u5bb9\u5ffd\u89c6\u7684\u3002\u800c\u5728\u903b\u8f91\u89c4\u6a21\u5927\u7684FPGA\u548c\u9ad8\u7aef\u5904\u7406\u5668\u6240\u8981\u6c42\u7684+1.0\uff5e+1.8V\u3001\u9700\u8981\u6570A\uff5e\u6570\u5341A\u5927\u7535\u6d41\u7684\u5e94\u7528\u4e2d\uff0c\u5f88\u65e9\u4ee5\u524d\u5c31\u5f00\u59cb\u91c7\u7528\u540c\u6b65\u6574\u6d41\u578bDC-DC\u8f6c\u6362\u5668\u4e86\u3002<\/p>\n<p>\u8fd9\u4e9b\u4f4e\u7535\u538b\u3001\u5927\u7535\u6d41\u8f93\u51fa\u7535\u6e90\uff0c\u7531\u4e8e\u5b89\u88c5\u5728\u9760\u8fd1FPGA\u548c\u5904\u7406\u5668\u82af\u7247\u7684\u7535\u6e90\u5f15\u811a\u9644\u8fd1\u800c\u88ab\u79f0\u4e3a\u201cPOL\uff08Point Of Load\uff09\u7535\u6e90\u201d\u3002<\/p>\n<h4 id=\"toc15\">\u30fb\u7535\u8def\u6784\u6210<\/h4>\n<p>\u4ed4\u7ec6\u89c2\u5bdf\u53ef\u4ee5\u53d1\u73b0\uff0c\u540c\u6b65\u6574\u6d41\u578bDC-DC\u8f6c\u6362\u5668\u7684\u7535\u8def\u6784\u6210\u4e0e\u5355\u7aef\u63a8\u633d\u5f0f\u8f6c\u6362\u5668\u76f8\u540c\uff0c\u4e3b\u5f00\u5173\\(Tr_{\\text{1}}\\)\u79f0\u4e3a\u201c\u9ad8\u8fb9\u5f00\u5173\u201d\uff0c\u6574\u6d41\u7528\u7684MOSFET\u79f0\u4e3a\u201c\u4f4e\u8fb9\u5f00\u5173\u201d\u3002<\/p>\n<p>\u4f7f\u7528\u4e13\u7528\u63a7\u5236IC\uff0c\u5728\u7535\u6d41\u6d41\u8fc7\u7eed\u6d41\u4e8c\u6781\u7ba1\u7684\u65f6\u95f4\u70b9\uff0c\u4f1a\u4f7fMOSFET\u5bfc\u901a\u3002\u5728MOSFET\u5bfc\u901a\u671f\u95f4\uff0c\u7535\u6d41\u4ece\u6e90\u6781\u6d41\u5411\u6f0f\u6781\u3002<\/p>\n<p>MOSFET\u7684\u5bfc\u901a\u7535\u963b\u5f88\u4f4e\uff0c\u4ec5\u6709\u6570m\u03a9\uff0c\u56e0\u6b64\u5176\u5bfc\u901a\u635f\u8017\u8981\u6bd4\u4e8c\u6781\u7ba1\u4f4e\u5f97\u591a\u3002<\/p>\n<h3>\u6807\u914d4\uff1a\u53ef\u75311\u8282\u7535\u6c60\u4ea7\u751f3.3V\u62165V\u7535\u538b\u7684\u201c\u5347\u538b\u578bDC-DC\u8f6c\u6362\u5668\u201d<\/h3>\n<h4 id=\"toc17\">\u30fb\u662f\u7535\u6c60\u4f9b\u7535\u7684\u79fb\u52a8\u8bbe\u5907\u4e0d\u53ef\u6216\u7f3a\u7684\u5668\u4ef6<\/h4>\n<p>\u8981\u75281\u8282\u9502\u79bb\u5b50\u84c4\u7535\u6c60\uff08\u5145\u6ee1\u7535\u65f6\u4e3a4.2V\uff09\u9a71\u52a85V\u621612V\u7684\u7535\u8def\uff0c\u5c31\u5fc5\u987b\u4f7f\u7528\u5347\u538b\u578bDC-DC\u8f6c\u6362\u5668\u3002\u56fe6\u4e3a\u5347\u538b\u578bDC-DC\u8f6c\u6362\u5668\u7684\u57fa\u672c\u7535\u8def\u3002<\/p>\n<p class=\"txt-al-center\" style=\"text-align: center;\"><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2024\/11\/DCDC_7ways_f06.png\" alt=\"\u56f36\uff1a\u6607\u5727\u578bDC-DC\u30b3\u30f3\u30d0\u30fc\u30bf\u306e\u57fa\u672c\u56de\u8def\" \/><br \/>\n\u56fe6\uff1a\u5347\u538b\u578bDC-DC\u8f6c\u6362\u5668\u7684\u57fa\u672c\u7535\u8def<\/p>\n<h4 id=\"toc18\">\u30fb\u5347\u538b\u673a\u5236<\/h4>\n<p>\u5f00\u5173\\(Tr_{\\text{1}}\\)\u3001\u4e8c\u6781\u7ba1\\(D_{\\text{1}}\\)\u3001\u7535\u611f\\(L_{\\text{1}}\\)\u7b49\u6784\u6210\u4ea7\u54c1\u7684\u5143\u5668\u4ef6\u4e0e\u964d\u538b\u578bDC-DC\u8f6c\u6362\u5668\u76f8\u540c\uff0c\u4f46\u8fde\u63a5\u65b9\u5f0f\u4e0d\u540c\u3002<\/p>\n<p>\u5f53\\(Tr_{\\text{1}}\\)\u5bfc\u901a\u65f6\uff0c\\(L_{\\text{1}}\\)\u88ab\u52b1\u78c1\u3002\u5f53\\(Tr_{\\text{1}}\\)\u5173\u65ad\u65f6\uff0c\\(L_{\\text{1}}\\)\u4e2d\u79ef\u84c4\u7684\u80fd\u91cf\u901a\u8fc7\u4e8c\u6781\u7ba1\u88ab\u91ca\u653e\u51fa\u6765\u3002\\(L_{\\text{1}}\\)\u8f93\u51fa\u7684\u7535\u6d41\u7ecf\u7531\u7535\u5bb9\\(C_{\\text{1}}\\)\u5e73\u6ed1\u6ee4\u6ce2\u540e\uff0c\u5f97\u5230\u76f4\u6d41\u7535\u538b\u3002<\/p>\n<h4 id=\"toc19\">\u30fb\u8f93\u51fa\u7535\u538b\u4e0ePWM\u4fe1\u53f7\u5360\u7a7a\u6bd4\u4e4b\u95f4\u7684\u5173\u7cfb\u5f0f<\/h4>\n<p>\u5728\\(Tr_{\\text{1}}\\)\u5bfc\u901a\u671f\u95f4\uff0c\\(L_{\\text{1}}\\)\u88ab\u65bd\u52a0\u8f93\u5165\u7535\u538b\u3002\\(L_{\\text{1}}\\)\u7684\u7535\u6d41\u53d8\u5316\u91cf\\(\u2206I_{\\text{L}}\\)\u53ef\u901a\u8fc7\u516c\u5f0f(5)\u6765\u8868\u793a\uff1a<\/p>\n<p>\\(\\Delta I_L = \\displaystyle \\frac{V_{\\text{in}}}{L_1} \\times t_{\\text{on}}\\) \uff085\uff09<\/p>\n<p>\u5176\u4e2d\uff0c\\(\u2206I_{\\text{L}}\\)\u662f\\(Tr_{\\text{1}}\\)\u5bfc\u901a\u65f6\\(L_{\\text{1}}\\)\u7684\u7535\u6d41\u53d8\u5316\u91cf[A]\uff0c\\(V_{\\text{IN}}\\)\u662f\u8f93\u5165\u7535\u538b[V]\uff0c\\(L_{\\text{1}}\\)\u662f\u7535\u611f\u5668\u7684\u7535\u611f\u503c[H]\uff0c\\(t_{\\text{on}}\\)\u662f\u5bfc\u901a\u65f6\u95f4[s]\u3002<\/p>\n<p>\u5f53\\(Tr_{\\text{1}}\\)\u5173\u65ad\u65f6\uff0c\\(L_{\\text{1}}\\)\u88ab\u65bd\u52a0\u8f93\u51fa\u7535\u538b\u548c\u8f93\u5165\u7535\u538b\u7684\u538b\u5dee\\(V_{\\text{OUT}}\\)\u2013\\(V_{\\text{IN}}\\)\u3002\u5176\u8868\u8fbe\u5f0f\u4e3a\u516c\u5f0f(6)\u3002\\(L_{\\text{1}}\\)\u7684\u7535\u6d41\u53d8\u5316\u91cf\\(\u2206I_{\\text{L}}\\)\u53ef\u901a\u8fc7\u516c\u5f0f(6)\u6765\u8868\u793a\uff1a<\/p>\n<p>\\(\\Delta I_L = \\displaystyle \\frac{V_{\\text{out}} \u2013 V_{\\text{in}}}{L_1} \\times t_{\\text{off}}\\) \uff086\uff09<\/p>\n<p>\u5176\u4e2d\uff0c\\(t_{\\text{off}}\\)\u662f\u5173\u65ad\u65f6\u95f4[s]\u3002<\/p>\n<p>\u5728\u8f93\u51fa\u7535\u6d41\u6052\u5b9a\u671f\u95f4\uff0c\u5bfc\u901a\uff08ON\uff09\u65f6\u548c\u5173\u65ad\uff08OFF\uff09\u65f6\u7684\u7535\u6d41\u53d8\u5316\u91cf\\(\u2206I_{\\text{L}}\\)\u662f\u76f8\u7b49\u7684\u3002<\/p>\n<p>\u6839\u636e\u516c\u5f0f(5)\u548c\u516c\u5f0f(6)\uff0c\u53ef\u4ee5\u63a8\u5bfc\u51fa\u5347\u538b\u578bDC-DC\u8f6c\u6362\u5668\u7684\u8f93\u51fa\u7535\u538b\u4e0e\u5173\u65ad\u65f6\u95f4\u4e4b\u6bd4\u2014\u2014Off duty\u7684\u5173\u7cfb\u5f0f(7)\u3002<\/p>\n<p>\\(V_{\\text{out}} = \\displaystyle \\frac{t_{\\text{on}} + t_{\\text{off}}}{t_{\\text{off}}} \\times V_{\\text{in}}\\) \uff087\uff09<\/p>\n<h3 id=\"toc20\">\u6807\u914d5\uff1a\u8981\u6784\u5efa100W\u4ee5\u4e0b\u7684\u9694\u79bb\u578bDC-DC\u8f6c\u6362\u5668\uff0c\u5c31\u7528\u201c\u53cd\u6fc0\u5f0f\u8f6c\u6362\u5668\u201d<\/h3>\n<p>\u4ee5\u5546\u7528\u4ea4\u6d41\u7535\u6e90\u4f5c\u4e3a\u8f93\u5165\u7684\u5f00\u5173\u7a33\u538b\u5668\uff0c\u4f1a\u4f7f\u7528\u80fd\u591f\u4f7f\u8f93\u5165\u7aef\uff08\u521d\u7ea7\u4fa7\uff09\u4e0e\u8f93\u51fa\u7aef\uff08\u6b21\u7ea7\u4fa7\uff09\u76f4\u6d41\u9694\u79bb\uff0c\u5e76\u5c06\u80fd\u91cf\u4f20\u8f93\u81f3\u8d1f\u8f7d\u7684\u9694\u79bb\u578bDC-DC\u8f6c\u6362\u5668\u3002\u9694\u79bb\u578bDC-DC\u8f6c\u6362\u5668\u7684\u7535\u8def\u65b9\u5f0f\u6709\u4e24\u79cd\uff0c\u4e0d\u540c\u7684\u7535\u8def\u65b9\u5f0f\u7535\u6d41\u6d41\u8fc7\u521d\u7ea7\u548c\u6b21\u7ea7\u7ed5\u7ec4\u7684\u65f6\u5e8f\u4e0d\u540c\u3002<\/p>\n<p>\u30fb\u53cd\u6fc0\u5f0f\u8f6c\u6362\u5668<br \/>\n\u30fb\u6b63\u6fc0\u5f0f\u8f6c\u6362\u5668<\/p>\n<p>\u56fe7\u4e3a\u53cd\u6fc0\u5f0f\u8f6c\u6362\u5668\u7684\u57fa\u672c\u7535\u8def\u3002\u5728\u521d\u7ea7\u4fa7\u5bfc\u901a\u671f\u95f4\uff0c\u80fd\u91cf\u88ab\u5b58\u50a8\u5728\u53d8\u538b\u5668\u4e2d\u3002\u5f53\u5173\u65ad\u521d\u7ea7\u4fa7\u65f6\uff0c\u80fd\u91cf\u4ece\u6b21\u7ea7\u4fa7\u8f93\u51fa\u3002\u8fd9\u79cd\u7535\u8def\u65b9\u5f0f\u88ab\u5e7f\u6cdb\u5e94\u7528\u4e8e100W\u4ee5\u4e0b\u7684\u5bb9\u91cf\u8f83\u5c0f\u7684\u9694\u79bb\u578b\u8f6c\u6362\u5668\u3002<\/p>\n<p class=\"txt-al-center\" style=\"text-align: center;\"><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/techweb.rohm.co.jp\/wp-content\/uploads\/2024\/06\/DCDC_7ways_f07.webp\" alt=\"\u56f37\uff1a100W\u4ee5\u4e0b\u306e\u5c0f\uff5e\u4e2d\u5bb9\u91cf\u7d76\u7e01\u578b\" \/><br \/>\n\u56fe7\uff1a100W\u4ee5\u4e0b\u7684\u4e2d\u5c0f\u5bb9\u91cf\u9694\u79bb\u578b\u8f6c\u6362\u5668<\/p>\n<p>\u5728\u6784\u5efaDC-DC\u8f6c\u6362\u5668\u65f6\uff0c\u9700\u8981\u9009\u62e9\u53cd\u6fc0\u5f0f\u8f6c\u6362\u5668\u3002\u5728\\(Tr_{\\text{1}}\\)\u5bfc\u901a\u671f\u95f4\uff0c\u80fd\u91cf\u50a8\u5b58\u5728\u53d8\u538b\u5668\u4e2d\uff0c\u5728\\(Tr_{\\text{1}}\\)\u5173\u65ad\u7684\u65f6\u95f4\u70b9\uff0c\u80fd\u91cf\u88ab\u8f93\u51fa\u5230\u6b21\u7ea7\u4fa7\u3002\u6b63\u6fc0\u5f0f\u8f6c\u6362\u5668\u548c\u53cd\u6fc0\u5f0f\u8f6c\u6362\u5668\u7684\u53d8\u538b\u5668\u6b21\u7ea7\u7ed5\u7ec4\u6781\u6027\u4e0d\u540c\u3002<\/p>\n<h3 id=\"toc21\">\u6807\u914d6\uff1a\u8981\u6784\u5efa100W\u4ee5\u4e0a\u7684\u9694\u79bb\u578bDC-DC\u8f6c\u6362\u5668\uff0c\u5c31\u7528\u201c\u6b63\u6fc0\u5f0f\u8f6c\u6362\u5668\u201d<\/h3>\n<p>\u56fe8\u662f\u6b63\u6fc0\u5f0f\u8f6c\u6362\u5668\u7684\u57fa\u672c\u7535\u8def\u3002\u7535\u6d41\u6d41\u8fc7\u53d8\u538b\u5668\u7684\u521d\u7ea7\u4fa7\uff08\u8f93\u5165\u7aef\uff09\u7684\u540c\u65f6\uff0c\u4e5f\u4f1a\u6d41\u8fc7\u6b21\u7ea7\u4fa7\uff08\u8f93\u51fa\u7aef\uff09\u3002\u8fd9\u79cd\u7535\u8def\u65b9\u5f0f\u9002\u7528\u4e8e\u9ad8\u4e8e100W\u7684\u5927\u5bb9\u91cf\u7535\u6e90\u3002<\/p>\n<p class=\"txt-al-center\" style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-27350\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2024\/11\/DCDC_7ways_f08.webp\" alt=\"\" width=\"648\" height=\"208\" \/><br \/>\n\u56fe8\uff1a100W\u4ee5\u4e0a\u7684\u5927\u5bb9\u91cf\u9694\u79bb\u578b\u8f6c\u6362\u5668<\/p>\n<p>\u5728\u6784\u5efaDC-DC\u8f6c\u6362\u5668\u65f6\uff0c\u9700\u8981\u9009\u62e9\u6b63\u6fc0\u5f0f\u8f6c\u6362\u5668\u3002\u5728\u7535\u6d41\u6d41\u5411\u53d8\u538b\u5668\u521d\u7ea7\u4fa7\u7684\u65f6\u95f4\u70b9\uff0c\u88ab\u8f93\u51fa\u81f3\u53d8\u538b\u5668\u7684\u6b21\u7ea7\u4fa7\u3002<\/p>\n<h3 id=\"toc22\">\u6807\u914d7\uff1a\u5c06\u76f4\u6d41\u7535\u8f6c\u6362\u4e3a\u4ea4\u6d41\u7535\u7684\u5f00\u5173\u7a33\u538b\u5668\u201c\u9006\u53d8\u5668\u201d<\/h3>\n<p>\u9006\u53d8\u5668\u662f\u4e00\u79cd\u53ef\u5c06\u76f4\u6d41\u7535\u8f6c\u6362\u4e3a\u6781\u6027\u4ea4\u66ff\u53d8\u5316\u7684\u4ea4\u6d41\u7535\u7684\u5f00\u5173\u7a33\u538b\u5668\u3002\u56fe9\u662f\u57fa\u672c\u7535\u8def\u3002\u8fd9\u662f\u9a71\u52a8\u7535\u673a\u7684\u6807\u914d\u529f\u7387\u653e\u5927\u7535\u8def\u3002<\/p>\n<p class=\"txt-al-center\" style=\"text-align: center;\"><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2024\/11\/DCDC_7ways_f09.png\" alt=\"\u56f39\uff1a\u30a4\u30f3\u30d0\u30fc\u30bf\u306e\u51fa\u529b\u56de\u8def\u306e\u57fa\u672c\u69cb\u6210\" \/><br \/>\n\u56fe9\uff1a\u9006\u53d8\u5668\u8f93\u51fa\u7535\u8def\u7684\u57fa\u672c\u6784\u6210<\/p>\n<p>\u5f53\u8f93\u51fa\u6b63\u4fe1\u53f7\u65f6\uff0c\u4f7f\\(Tr_{\\text{1}}\\)\u548c\\(Tr_{\\text{4}}\\)\u5bfc\u901a\uff08ON\uff09\uff0c\u4f7f\\(Tr_{\\text{2}}\\)\u548c\\(Tr_{\\text{3}}\\)\u5173\u65ad\uff08OFF\uff09\u3002\u5f53\u8f93\u51fa\u8d1f\u4fe1\u53f7\u65f6\uff0c\u4f7f\\(Tr_{\\text{2}}\\)\u548c\\(Tr_{\\text{3}}\\)\u5bfc\u901a\uff08ON\uff09\uff0c\u4f7f\\(Tr_{\\text{1}}\\)\u548c\\(Tr_{\\text{4}}\\)\u5173\u65ad\uff08OFF\uff09\u3002\u7528\u6bd4\u8f93\u51fa\u7684\u9891\u7387\u9ad8\u6570\u5341\uff5e\u6570\u767e\u500d\u7684\u9ad8\u9891\u7387\u6765\u9a71\u52a8\u529f\u7387\u6676\u4f53\u7ba1ON\/OFF\u3002<\/p>\n<p>\u5982\u56fe10\u6240\u793a\uff0c\u5728\u8f93\u51fa\u7535\u538b\u6781\u6027\u4ea4\u66ff\u7684\u8fc7\u96f6\u70b9\u9644\u8fd1\uff0c\u5360\u7a7a\u6bd4\u51cf\u5c0f\uff1b\u800c\u5728\u8f93\u51fa\u7535\u538b\u6700\u5927\u503c\u9644\u8fd1\uff0c\u5360\u7a7a\u6bd4\u53d8\u5927\u3002\u5c06\u8fd9\u79cd\u8109\u51b2\u4fe1\u53f7\u5e73\u6ed1\u5904\u7406\u540e\uff0c\u53ef\u4ee5\u5f97\u5230\u6b63\u5f26\u6ce2\u3002\u56fe11\u662f\u9a71\u52a8\u4e09\u76f8\u65e0\u5237\u7535\u673a\u7684\u9006\u53d8\u5668\u7535\u8def\u3002<\/p>\n<p class=\"txt-al-center\" style=\"text-align: center;\"><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2024\/11\/DCDC_7ways_f10.png\" alt=\"\u56f310\uff1a\u30a4\u30f3\u30d0\u30fc\u30bf\u51fa\u529b\u6bb5\u306e\u30d1\u30ef\u30fc\u30fb\u30c8\u30e9\u30f3\u30b8\u30b9\u30bf\u306e\u52d5\u4f5c\u3068\u6b63\u5f26\u6ce2\u51fa\u529b\u306e\u95a2\u4fc2\" \/><br \/>\n\u56fe10\uff1a\u9006\u53d8\u5668\u8f93\u51fa\u7ea7\u529f\u7387\u6676\u4f53\u7ba1\u7684\u5de5\u4f5c\u4e0e\u6b63\u5f26\u6ce2\u8f93\u51fa\u4e4b\u95f4\u7684\u5173\u7cfb<\/p>\n<p class=\"txt-al-center\" style=\"text-align: center;\"><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2024\/11\/DCDC_7ways_f11.png\" alt=\"\u56f311\uff1a3\u76f8\u30d6\u30e9\u30b7\u30ec\u30b9\u30fb\u30e2\u30fc\u30bf\u30fc\u99c6\u52d5\u7528\u306e\u30a4\u30f3\u30d0\u30fc\u30bf\u56de\u8def\" \/><br \/>\n\u56fe11\uff1a\u9a71\u52a8\u4e09\u76f8\u65e0\u5237\u7535\u673a\u7684\u9006\u53d8\u5668\u7535\u8def<\/p>\n<h3 id=\"toc23\">\u4e13\u680f\uff1a\u7535\u6e90\u6280\u672f\u9886\u57df\u4ee4\u4eba\u8d39\u89e3\u7684\u672f\u8bed<\/h3>\n<h4 id=\"toc24\">\u867d\u8bf4\u53ea\u6709\u201c\u7535\u6e90\u201d\u4e24\u4e2a\u5b57&#8230;&#8230;<\/h4>\n<p>\u201c\u7535\u6e90\u201d\u662f\u7535\u6c60\u548c\u53d1\u7535\u673a\u7b49\u53ef\u4ee5\u63d0\u53d6\u7535\u80fd\u7684\u88c5\u7f6e\u3002\u706b\u529b\u53d1\u7535\u7ad9\u3001\u4ea4\u6d41\u7535\u6e90\u63d2\u5ea7\u3001\u5e72\u7535\u6c60\u90fd\u662f\u7535\u6e90\u3002<\/p>\n<p>\u542c\u5230\u201c\u7535\u6e90\u201d\uff0c\u6709\u4eba\u4f1a\u60f3\u5230\u201c\u7535\u6e90\u7535\u8def\u201d\uff0c\u6709\u4eba\u4f1a\u60f3\u5230\u201c\u7535\u6e90\u5355\u5143\u201d\uff0c\u6709\u4eba\u4f1a\u60f3\u5230\u201c\u7535\u6e90\u6a21\u5757\u201d\uff0c\u5177\u4f53\u56e0\u4eba\u800c\u5f02\u3002<\/p>\n<p>\u867d\u7136\u201cDC-DC\u8f6c\u6362\u5668\u201d\u53ea\u662f\u201c\u5c06\u76f4\u6d41\u7535\u8f6c\u6362\u4e3a\u76f4\u6d41\u7535\u7684\u4ea7\u54c1\u201d\uff0c\u4e0d\u8fc7\u901a\u5e38\u6307\u7684\u662f\u201c\u8fdb\u884c\u5f00\u5173\u5de5\u4f5c\u7684\u7a33\u538b\u5668\u201d\uff0c\u800c\u4ee5\u7ebf\u6027\u5de5\u4f5c\u7684DC-DC\u8f6c\u6362\u5668\u5219\u88ab\u79f0\u4e3a\u201c\u7ebf\u6027\u7a33\u538b\u5668\u201d\u3002<\/p>\n<p>\u7535\u6e90\u9886\u57df\u7684\u672f\u8bed\u5f88\u591a\u60c5\u51b5\u4e0b\u4e0d\u662f\u6309\u5b57\u9762\u610f\u601d\u4f7f\u7528\u7684\uff0c\u9488\u5bf9\u540c\u4e00\u4e2a\u8bcd\uff0c\u5de5\u7a0b\u5e08A\u5148\u751f\u60f3\u5230\u7684\u201c\u7535\u8def\u201d\uff0c\u9500\u552eB\u5148\u751f\u53ef\u80fd\u4f1a\u60f3\u5230\u201cAC\u63d2\u5ea7\u201d\u3002<\/p>\n<h5 id=\"toc25\">\u7535\u6e90\u7535\u8def<\/h5>\n<p>\u7535\u6e90\u7535\u8def\u662f\u5c06\u4f5c\u4e3a\u7535\u80fd\u6765\u6e90\u7684\u7535\u6c60\u548c\u53d1\u7535\u673a\u6240\u8f93\u51fa\u7684\u4e0d\u7a33\u5b9a\u7535\u538b\u548c\u7535\u6d41\u8f6c\u6362\u4e3a\u53ef\u4ee5\u4f7f\u7535\u5b50\u7535\u8def\u548c\u7535\u5b50\u4ea7\u54c1\uff08\u4f8b\u5982\u7535\u673a\uff09\u6b63\u5e38\u8fd0\u884c\u6240\u9700\u7684\u7535\u538b\u548c\u7535\u6d41\u7684\u7535\u8def\u3002<\/p>\n<h5 id=\"toc26\">\u7a33\u538b\u5668<\/h5>\n<p>\u5c06\u6ce2\u52a8\u7684\u8f93\u5165\u7535\u538b\u8f6c\u6362\u4e3a\u6ce2\u52a8\u8f83\u5c0f\u7684\u7a33\u5b9a\u7535\u538b\u7684\u7535\u6e90\u7535\u8def\u79f0\u4e3a\u201c\u7a33\u538b\u5668\u201d\u6216\u201c\u7a33\u538b\u7535\u6e90\u7535\u8def\u201d\u3002\u5185\u7f6e\u8d1f\u53cd\u9988\u7535\u8def\uff0c\u53ef\u68c0\u6d4b\u51fa\u8f93\u51fa\u7535\u538b\u7684\u6ce2\u52a8\uff0c\u7528\u653e\u5927\u5668\u5c06\u4e0e\u57fa\u51c6\u7535\u538b\u4e4b\u95f4\u7684\u5dee\u503c\u653e\u5927\u5e76\u8fd4\u56de\u81f3\u8f93\u5165\u3002<\/p>\n<h5 id=\"toc27\">\u7ebf\u6027\u7a33\u538b\u5668<\/h5>\n<p>\u4f7f\u7535\u6d41\u63a7\u5236\u5143\u4ef6\u2014\u2014\u529f\u7387\u6676\u4f53\u7ba1\u5728\u975e\u9971\u548c\u533a\u57df\u8fde\u7eed\u5de5\u4f5c\u7684\u7a33\u538b\u5668\u79f0\u4e3a\u201c\u7ebf\u6027\u7a33\u538b\u5668\u201d\u3002<\/p>\n<h5 id=\"toc28\">\u5f00\u5173\u7a33\u538b\u5668<\/h5>\n<p>\u5c06\u7535\u6d41\u63a7\u5236\u5143\u4ef6\u2014\u2014\u529f\u7387\u6676\u4f53\u7ba1\u9a71\u52a8\u81f3\u9971\u548c\u533a\u57df\u4ee5\u4f7f\u5176\u8fdb\u884cON\/OFF\u5de5\u4f5c\u7684\u7a33\u538b\u5668\u79f0\u4e3a\u201c\u5f00\u5173\u7a33\u538b\u5668\u201d\u3002\u901a\u5e38\u662f\u6307\u5c06100V\uff5e240V\u7684\u5546\u7528\u7535\u6e90\u4f5c\u4e3a\u8f93\u5165\uff0c\u751f\u621024V\u621612V\u7b49\u603b\u7ebf\u7535\u6e90\u7684\u7535\u8def\u6216\u5355\u5143\uff0c\u591a\u6570\u4ea7\u54c1\u5177\u6709\u9694\u79bb\u529f\u80fd\u3002<\/p>\n<h5 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