{"id":4276,"date":"2017-03-09T00:00:39","date_gmt":"2017-03-08T15:00:39","guid":{"rendered":"http:\/\/micro.rohm.com\/cn\/techweb\/?p=4276"},"modified":"2022-09-16T16:32:10","modified_gmt":"2022-09-16T08:32:10","slug":"%e7%b5%b6%e7%b8%81%e5%9e%8b%e3%83%95%e3%83%a9%e3%82%a4%e3%83%90%e3%83%83%e3%82%af%e3%82%b3%e3%83%b3%e3%83%90%e3%83%bc%e3%82%bf%e5%9b%9e%e8%b7%af%e8%a8%ad%e8%a8%88%ef%bc%9a%e3%83%88%e3%83%a9%e3%83%b3","status":"publish","type":"post","link":"https:\/\/techclass.wfjydl.com\/knowledge\/acdc\/acdc_pwm\/acdc_pwm01\/940","title":{"rendered":"\u7edd\u7f18\u578b\u53cd\u6fc0\u5f0f\u8f6c\u6362\u5668\u7535\u8def\u8bbe\u8ba1\uff1a\u53d8\u538b\u5668\u8bbe\u8ba1\uff08\u6570\u503c\u8ba1\u7b97\uff09"},"content":{"rendered":"<p>\u53cd\u6fc0\u5f0f\u8f6c\u6362\u5668\u5fc5\u8981\u7684\u53d8\u538b\u5668\u8bbe\u8ba1\u65f6\uff0c\u4f9d\u636e\u7535\u6e90\u89c4\u683c\uff0c\u7b97\u51fa\u53d8\u538b\u5668\u8bbe\u8ba1\u4e0a\u5fc5\u8981\u7684\u6570\u503c\u5f00\u59cb\u3002\u57fa\u672c\u4e0a\u5229\u7528\u5404\u81ea\u7684\u516c\u5f0f\u8fdb\u884c\u8ba1\u7b97\u3002\u53d8\u538b\u5668\u7684\u76f8\u5173\u8bbe\u8ba1\u4fe1\u606f\uff0c\u4f1a\u5199\u5728\u8be5\u8bbe\u8ba1\u6240\u4f7f\u7528\u7684IC1\u7684<a href=\"https:\/\/www.wfjydl.com\/documents\/11546\/2226751\/BM1P061FJEVK-001+EVK003.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">BM1P061FJ\u7684\u5e94\u7528\u5907\u5fd8\u5f55<\/a>\u4e0a\u9762\uff0c\u8bbe\u8ba1\u65f6\u53ef\u4ee5\u591a\u53c2\u8003\u770b\u770b\u3002\u5728\u8fd9\u91cc\uff0c\u8bf4\u660e\u7535\u8def\u56fe\u7684\u5c40\u90e8\u653e\u5927\u5e2e\u52a9\u5927\u5bb6\u66f4\u5bb9\u6613\u4e86\u89e3\u5185\u5bb9\u3002\u6574\u4e2a\u7535\u8def\u8bf7\u53c2\u7167\u201c\u8bbe\u8ba1\u8303\u4f8b\u7535\u8def\u201d\u3002<\/p>\n<p>\u672c\u7535\u8def\u56fe\u6458\u5f55\u81ea\u8303\u4f8b\u7535\u8def\u4e2d\u7684\u53d8\u538b\u5668T1\u90e8\u5206\u3002\u53d8\u538b\u5668T1\u9664\u4e86\u8f93\u5165\u7684\u521d\u7ea7\u7ed5\u7ec4Np\u548c\u8f93\u51fa\u7684\u6b21\u7ea7\u7ed5\u7ec4Ns\u5916\uff0c\u8fd8\u5305\u542bIC1\u4ea7\u751fVCC\u7535\u538b\u7684\u7ebf\u5708Nd\u5728\u5185\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-942 aligncenter\" src=\"\/upload\/2017\/03\/acdc851_01.jpg\" alt=\"acdc851_01\" width=\"500\" height=\"450\"><\/p>\n<p><strong id=\"p01\">\u53d8\u538b\u5668T1\u7684\u8bbe\u8ba1\u6b65\u9aa4<\/strong><br \/>\n\u8bbe\u8ba1\u53d8\u538b\u5668T1\u65f6\u7684\u6b65\u9aa4\u6240\u793a\u5982\u4e0b\u3002\u4f9d\u4e0b\u5217\u987a\u5e8f\u8ba1\u7b97\u51fa\u6570\u503c\uff0c\u5e76\u5bfc\u51fa\u4e0b\u8868\u53d8\u538b\u5668\u7684\u53c2\u6570\u3002\u7ed5\u7ec4\u548c\u6d41\u52a8\u7535\u6d41\u7684\u8bb0\u53f7\uff0c\u8bf7\u53c2\u7167\u53f3\u4e0b\u65b9\u7684\u53d8\u538b\u5668\u7b80\u7565\u56fe\u3002<\/p>\n<p><img decoding=\"async\" class=\"size-medium wp-image-941 alignright\" src=\"\/upload\/2017\/03\/acdc851_08-241x300.jpg\" alt=\"acdc851_08\"><\/p>\n<p><a href=\"#p01\">\u2460\u53cd\u6fc0\u5f0f\u7535\u538bVOR\u7684\u8bbe\u5b9a<\/a><br \/>\n<a href=\"#p02\">\u2461\u6b21\u7ea7\u7ed5\u7ec4\u7535\u611f\u503cLs\u3001\u4e8c\u6b21\u4fa7\u7684\u6700\u5927\u7535\u6d41Ispk\u7684\u8ba1\u7b97<\/a><br \/>\n<a href=\"#p03\">\u2462\u521d\u7ea7\u7ed5\u7ec4\u7535\u611f\u503cLp\u3001\u4e00\u6b21\u4fa7\u7684\u6700\u5927\u7535\u6d41Ippk\u7684\u8ba1\u7b97<\/a><br \/>\n<a href=\"#p04\">\u2463\u53d8\u538b\u5668\u5c3a\u5bf8\u7684\u51b3\u5b9a<\/a><br \/>\n<a href=\"#p05\">\u2464\u521d\u7ea7\u7ed5\u7ec4\u6570Np\u7684\u8ba1\u7b97<\/a><br \/>\n<a href=\"#p06\">\u2465\u6b21\u7ea7\u7ed5\u7ec4\u6570Ns\u7684\u8ba1\u7b97<\/a><br \/>\n<a href=\"#p07\">\u2466VCC\u7ed5\u7ec4\u6570Nd\u7684\u8ba1\u7b97<\/a><\/p>\n<p>\u4f5c\u4e3a\u53d8\u538b\u5668T1\u53c2\u6570\u5bfc\u51fa\u503c<\/p>\n<div class=\"tbl_wrap\">\n<table class=\"tbl01\">\n<tbody>\n<tr>\n<th scope=\"col\">\u94c1\u82af<\/th>\n<td scope=\"col\" width=\"260\">\u5c3a\u5bf8<\/td>\n<\/tr>\n<tr>\n<th>Lp<\/th>\n<td>\u7535\u611f\u503c<\/td>\n<\/tr>\n<tr>\n<th>Np<\/th>\n<td>\u531d\u6570<\/td>\n<\/tr>\n<tr>\n<th>Ns<\/th>\n<td>\u531d\u6570<\/td>\n<\/tr>\n<tr>\n<th>Nd<\/th>\n<td>\u531d\u6570<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p><strong>\u2460 \u53cd\u6fc0\u5f0f\u7535\u538bVOR\u7684\u8bbe\u5b9a<\/strong><\/p>\n<p>\u53cd\u6fc0\u5f0f\u7535\u538bVOR\u6570\u503c\u662fVO\uff08\u4e8c\u6b21\u4fa7Vout\u52a0\u4e0a\u4e8c\u6b21\u4fa7\u4e8c\u6781\u7ba1D6\u7684VF\uff09\u4e58\u4e0a\u53d8\u538b\u5668\u7684\u531d\u6570\u6bd4Np\uff1aNs\u3002\u8bbe\u5b9a\u8be5\u53cd\u6fc0\u7535\u538bVOR\uff0c\u6765\u51b3\u5b9a\u531d\u6570\u6bd4Np\uff1aNs\u53caDuty\u6bd4\u503c\u3002\u57fa\u672c\u516c\u5f0f\u548c\u793a\u4f8b\u5982\u4e0b\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-972\" src=\"\/upload\/2017\/03\/acdc851_formulas01.png\" alt=\"acdc851_formulas01\" width=\"710\" height=\"334\"><\/p>\n<p>\u4f8b\u5982\uff0c\u531d\u6570\u6bd4Np\uff1aNs\u4e3a5.385\u3001Duty(max)\u5c06\u662f0.424\u3002\u6839\u636e\u7ecf\u9a8c\u6cd5\u5219\uff0cDuty\uff08max\uff09\u4ee5\u4f4e\u4e8e0.5\u8f83\u4f73\u3002\u5982\u679c\uff0c\u8ba1\u7b97\u540eDuty\u8d85\u8fc70.5\u65f6\uff0c\u8bf7\u8c03\u6574VOR\u3002<\/p>\n<p>\u5982\u679c\u4ece\u53cd\u6fc0\u5f0f\u8f6c\u6362\u5668\u7684\u5de5\u4f5c\u539f\u7406\u6765\u770b\uff0c\u4e3a\u4e86\u8ba9\u65bd\u52a0\u5728\u521d\u7ea7\u7ed5\u7ec4\u7684\u5f00\u5173\u7528\u6676\u4f53\u7ba1Vds\uff0c\u4e5f\u5c31\u662fVIN+VOR\u66f4\u52a0\u660e\u786e\uff0c\u800c\u4ece\u8bbe\u5b9a\u53cd\u6fc0\u5f0f\u7535\u538bVOR\u5f00\u59cb\u3002\u53e6\u5916\uff0c\u4e00\u5f00\u59cb\u4e5f\u80fd\u591f\u91c7\u7528\u4f8b\u5982\u5148\u8bbe\u5b9a\u6700\u5927Duty\u6bd4\u7b49\u5176\u4ed6\u65b9\u6cd5\u3002<\/p>\n<p>\u5173\u4e8e\u53cd\u6fc0\u5f0f\u7535\u8def\u7684\u5de5\u4f5c\u548c\u5404\u7535\u538b\u7684\u8be6\u7ec6\uff0c\u8bf7\u53c2\u8003<a href=\"\/knowledge\/acdc\/acdc_pwm\/acdc_pwm01\/851\" target=\"_blank\" rel=\"noopener noreferrer\">\u201c\u53cd\u6fc0\u5f0f\u8f6c\u6362\u5668\u7684\u57fa\u672c\u7535\u8def\u548c\u7279\u5f81\u201d\u7684\u201cPWM\u63a7\u5236\u53cd\u6fc0\u5f0f\u8f6c\u6362\u5668\u7684\u5de5\u4f5c\uff08\u8fde\u7eed\u6a21\u5f0f\uff09\u201d<\/a>\u7b49\u9879\u76ee\u3002<\/p>\n<p><strong id=\"p02\">\u2461 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loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-971\" src=\"\/upload\/2017\/03\/acdc851_formulas02.png\" alt=\"acdc851_formulas02\" width=\"710\" height=\"179\"><\/p>\n<p>\u7ecf\u7531\u4e0a\u8ff0\u516c\u5f0f\uff0c\u8ba1\u7b97\u6b21\u7ea7\u7ed5\u7ec4\u7535\u611f\u503cLs=8.6\u03bcH\uff0c\u4ee5\u53ca\u4e8c\u6b21\u4fa7\u7684\u6700\u5927\u7535\u6d41Ispk=12.5A\u3002\u53e6\u5916\uff0c\u4e5f\u63d0\u4f9b\u4e00\u6b21\u4fa7\u7535\u6d41\u6ce2\u5f62\u548c\u4e8c\u6b21\u4fa7\u7535\u6d41\u6ce2\u4f9b\u5404\u4f4d\u53c2\u8003\u3002<\/p>\n<p><strong id=\"p03\">\u2462 \u521d\u7ea7\u7ed5\u7ec4\u7535\u611f\u503cLp\u3001\u4e00\u6b21\u4fa7\u7684\u6700\u5927\u7535\u6d41Ippk\u7684\u8ba1\u7b97<\/strong><\/p>\n<p>\u4f9d\u7167\u4ee5\u4e0b\u7684\u516c\u5f0f\uff0c\u4ee3\u4eba\u4e0a\u8ff0\u7684\u8ba1\u7b97\u7ed3\u679c\uff0c\u8ba1\u7b97\u51fa\u521d\u7ea7\u7ed5\u7ec4\u7535\u611f\u503cLp\u548c\u4e00\u6b21\u4fa7\u7684\u6700\u5927\u7535\u6d41Ippk\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-975\" src=\"\/upload\/2017\/03\/acdc851_formulas03.png\" alt=\"acdc851_formulas03\" width=\"550\" height=\"48\"><\/p>\n<p>\u5728\u8fd9\u91cc\uff0c\u8ba1\u7b97\u51fa\u6765\u7684Lp\u5c06\u4f5c\u4e3a\u53d8\u538b\u5668T1\u7684\u53c2\u6570\u5bfc\u51fa\u503c\u4e4b\u4e00\u3002<\/p>\n<p><strong id=\"p04\">\u2463 \u53d8\u538b\u5668\u5c3a\u5bf8\u7684\u51b3\u5b9a<\/strong><\/p>\n<p>\u53d8\u538b\u5668\u94c1\u82af\u7684\u5c3a\u5bf8\u662f\u6839\u636e\u8f93\u51fa\u529f\u7387Po\uff08W\uff09\u6765\u51b3\u5b9a\u3002\u53cd\u6fc0\u5f0f\u8f6c\u6362\u5668\u4e00\u822c\u8f93\u51fa\u529f\u7387\uff0c\u548c\u94c1\u82af\u5c3a\u5bf8\u4e4b\u95f4\u7684\u5173\u8054\u6027\u5982\u4e0b\u8868\u6240\u793a\u3002\u5728\u672c\u8bbe\u8ba1\u8303\u4f8b\u4e2dPo=36W\uff0c\u56e0\u6b64\u94c1\u82af\u5c3a\u5bf8\u9009\u62e9EER28\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-947\" src=\"\/upload\/2017\/03\/acdc851_06-264x300.jpg\" alt=\"acdc851_06\" width=\"200\" height=\"226\"><\/p>\n<div class=\"tbl_wrap\">\n<table class=\"tbl01\">\n<tbody>\n<tr>\n<th scope=\"col\">\u8f93\u51fa\u529f\u7387Po(W)<\/th>\n<th scope=\"col\">\u94c1\u82af\u5c3a\u5bf8<\/th>\n<th scope=\"col\">\u94c1\u82af\u65ad\u9762\u79efAe\uff08mm<sup>2<\/sup>\uff09<\/th>\n<\/tr>\n<tr>\n<td>\uff5e 30<\/td>\n<td>EI25\/EE25<\/td>\n<td>41<\/td>\n<\/tr>\n<tr>\n<td>\uff5e 60<\/td>\n<td>EI28\/EE28\/EER28<\/td>\n<td>84<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>\u203b\u4e0a\u8ff0\u6570\u503c\u4e3a\u5927\u7565\u6807\u51c6\u3002\u8be6\u7ec6\u5185\u5bb9\u8bf7\u5411\u53d8\u538b\u5668\u5382\u5546\u786e\u8ba4\u3002<\/p>\n<p><strong id=\"p05\">\u2464  \u521d\u7ea7\u7ed5\u7ec4\u6570Np\u7684\u8ba1\u7b97<\/strong><\/p>\n<p>\u521d\u7ea7\u7ed5\u7ec4\u6570Np\u6700\u521d\u7684\u78c1\u901a\u5bc6\u5ea6\u5fc5\u987b\u8bbe\u5b9a\u5728\u5bb9\u8bb8\u8303\u56f4\u5185\u3002\u8bf7\u4f9d\u7167\u4e0b\u5217\u516c\u5f0f\u8ba1\u7b97\u3002\u4e00\u822c\u7684\u94c1\u6c27\u4f53\u94c1\u82af\u78c1\u901a\u5bc6\u5ea6B(T)\u7684\u6700\u5927\u503c\u4e3a0.4T@100\u2103\uff0c\u6240\u4ee5Bsat=0.35T\uff0c\u4ee3\u5165Lp\u548cIppk\u8ba1\u7b97\u521d\u7ea7\u7ed5\u7ec4\u6570Np\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-976\" src=\"\/upload\/2017\/03\/acdc851_formulas04.jpg\" alt=\"acdc851_formulas04\" width=\"475\" height=\"43\"><\/p>\n<p>\u5176\u6b21\uff0c\u4e3a\u4e86\u907f\u514d\u5f15\u8d77\u78c1\u9971\u548c\u73b0\u8c61\uff0c\u6839\u636eAL-Value-NI\u7279\u6027\u6765\u8bbe\u5b9aNp\u3002\u6b64\u65f6\uff0c\u5fc5\u987b\u8981\u6ee1\u8db3Bsat\u7684\u6761\u4ef6\u8ba1\u7b97\u516c\u5f0f\u3002<\/p>\n<p>AL-Value=280nH\/turns<sup>2<\/sup>\u65f6<br \/>\n<img decoding=\"async\" class=\"alignleft wp-image-979\" src=\"\/upload\/2017\/03\/acdc851_formulas07.jpg\" alt=\"acdc851_formulas07\"><\/p>\n<p>\u5bf9\u6b64\uff0cLp\u4e3a249\u03bcH\u4e14\u7ed530\u5708\u65f6\uff0cAL-Value\u4e3a249\u03bcH\/30<sup>2<\/sup>\u2252276.7nH\/turns2\u3002<\/p>\n<p>\u7ecf\u7531\u4e0b\u65b9\u516c\u5f0f\u8ba1\u7b97\u51faNI\u503c\u3002<\/p>\n<p><img decoding=\"async\" class=\"aligncenter wp-image-1001\" src=\"\/upload\/2017\/03\/acdc851_formulas09.jpg\" alt=\"acdc851_formulas09\"><\/p>\n<p>\u56e0\u4e3a\u5df2\u7ecf\u7b97\u51faAL-Value\u548cNI\uff0c\u56e0\u6b64\u53ef\u4ee5\u4eceEER28\u94c1\u82af\u5c3a\u5bf8\u7684AL-Value-NI\u7279\u6027\u56fe\uff0c\u786e\u8ba4\u672a\u8d85\u51fa\u5bb9\u8bb8\u8303\u56f4\u3002\u5982\u679c\u8d85\u51fa\u8303\u56f4\u5c31\u5fc5\u987b\u8c03\u6574Np\u3002<\/p>\n<p><img decoding=\"async\" class=\"aligncenter wp-image-1045 size-full\" src=\"\/upload\/2017\/03\/acdc851_071.jpg\" alt=\"AL-Value-NI\u7279\u6027\u56fe\"><\/p>\n<p><strong id=\"p06\">\u2465 \u6b21\u7ea7\u7ed5\u7ec4\u6570Ns\u7684\u8ba1\u7b97<\/strong><\/p>\n<p>\u5728\u8ba1\u7b97\u521d\u7ea7\u7ed5\u7ec4\u4e4b\u540e\uff0c\u7ee7\u7eed\u8ba1\u7b97\u6b21\u7ea7\u7ed5\u7ec4\u6570Ns\u3002\u5148\u524d\u5df2\u7ecf\u7b97\u51fa\u521d\u7ea7\u7ed5\u7ec4Np\u4e3a34\u5708\uff0cNp\uff1aNs\u4e3a5:1\uff0c\u5c06\u8fd9\u4e9b\u6570\u503c\u4ee3\u5165\u4e0b\u5217\u516c\u5f0f\u5185\u3002<\/p>\n<p><a href=\"\/upload\/2017\/03\/acdc851_formulas10.jpg\"><img decoding=\"async\" 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