{"id":5681,"date":"2018-07-12T00:00:46","date_gmt":"2018-07-11T15:00:46","guid":{"rendered":"http:\/\/micro.wfjydl.com\/techweb\/?p=5681"},"modified":"2022-04-11T11:40:58","modified_gmt":"2022-04-11T03:40:58","slug":"%e4%b8%bb%e8%a6%81%e9%83%a8%e5%93%81%e3%81%ae%e9%81%b8%e6%8a%9e%ef%bc%9a%e5%87%ba%e5%8a%9b%e6%95%b4%e6%b5%81%e3%83%80%e3%82%a4%e3%82%aa%e3%83%bc%e3%83%89-d4","status":"publish","type":"post","link":"https:\/\/techclass.wfjydl.com\/knowledge\/acdc\/acdc_pwm\/acdc_pwm04\/5221","title":{"rendered":"\u4e3b\u8981\u90e8\u4ef6\u7684\u9009\u578b\uff1a\u8f93\u51fa\u6574\u6d41\u4e8c\u6781\u7ba1 D4"},"content":{"rendered":"

\u672c\u6587\u5c06\u4ecb\u7ecd\u8f93\u51fa\u6574\u6d41\u4e8c\u6781\u7ba1\u7684\u9009\u578b\u3002<\/p>\n

\u8f93\u51fa\u6574\u6d41\u4e8c\u6781\u7ba1 D4<\/strong><\/p>\n

\n
\n

\u8f93\u51fa\u6574\u6d41\u4e8c\u6781\u7ba1\u4e5f\u79f0\u4e3a\u201cCatch Diode \u201d\u6216\u201cFreewheeling Diode\u201d\u3002\u53e6\u5916\uff0c\u5728\u540c\u6b65\u6574\u6d41\u578b\u4e8c\u6781\u7ba1\u4e2d\uff0c\u8fd9\u79cd\u4e8c\u6781\u7ba1\u88ab\u66ff\u6362\u4e3a\u6676\u4f53\u7ba1\uff0c\u5c31\u662f\u88ab\u79f0\u4e3a\u201c\u4f4e\u8fb9\u5f00\u5173\u201d\u7b49\u7684\u90e8\u5206\u3002<\/p>\n

\u5982\u53f3\u4fa7\u7535\u8def\u56fe\u6240\u793a\uff0c\u8f93\u51fa\u4e8c\u6781\u7ba1D4\u7531\u8f93\u51fa\u7aef\u8fde\u63a5\u81f3GND\u3002\u5f53\u9ad8\u8fb9MOSFET\u5173\u65ad\u65f6\uff0c\u7535\u611f\u4e2d\u79ef\u84c4\u7684\u80fd\u91cf\u7ecf\u7531D4\u8f93\u51fa\u3002<\/p>\n<\/p><\/div>\n

\n\t\t\"A4_8_ckt\"\n\t<\/div>\n<\/div>\n

\u8f93\u51fa\u4e8c\u6781\u7ba1\u7684\u5e38\u6570\u8ba1\u7b97<\/strong><\/p>\n

\u8f93\u51fa\u6574\u6d41\u4e8c\u6781\u7ba1\u5229\u7528\u5f00\u5173\u9891\u7387\u6765\u5bfc\u901a\/\u5173\u65ad\uff0c\u6240\u4ee5\u4f7f\u7528\u53ef\u9ad8\u901f\u5f00\u5173\u7684\u5feb\u901f\u6062\u590d\u4e8c\u6781\u7ba1\u3002\u9700\u8981\u63a2\u8ba8\u7684\u662f\u8010\u538b\u548c\u635f\u8017\u3002<\/p>\n

\u65bd\u52a0\u4e8e\u8f93\u51fa\u4e8c\u6781\u7ba1\u7684\u53cd\u5411\u7535\u538b\u8003\u8651\u5230\u4f59\u91cf\u4e3a\uff1a<\/p>\n

  Vdr = VIN (max)\u00f70.7 = 372V\u00f70.7 = 531V \u2192\u3000600V<\/p>\n

\u4e8c\u6781\u7ba1\u7684\u635f\u8017\u4f30\u7b97\u5982\u4e0b\uff1a<\/p>\n

  Pd = VF<\/sub>\u00d7Iout<\/sub> = 1V\u00d70.2A = 0.2W <\/p>\n

\u4e8c\u6781\u7ba1\u4f7f\u7528RFN1L6S\uff08\u7535\u8def\u56fe\u4e2d\u6709\u6307\u5b9a\uff09\u3002<\/p>\n

\u4e0b\u9762\u662f\u5feb\u901f\u6062\u590d\u4e8c\u6781\u7ba1 RFN1L6S\u7684\u89c4\u683c\u503c\u8868\u548cVF<\/sub>-IF<\/sub>\u7279\u6027\u3002\u6b64\u6b21\u6709\u7535\u8def\u793a\u4f8b\uff0c\u6240\u4ee5\u6ca1\u6709\u5fc5\u8981\u8fdb\u884c\u5b9e\u9645\u7684\u4e8c\u6781\u7ba1\u9009\u578b\uff0c\u4e0d\u8fc7\u673a\u4f1a\u96be\u5f97\uff0c\u5c31\u5f53\u901a\u8fc7\u641c\u7d22\u6216\u5176\u4ed6\u4ec0\u4e48\u624b\u6cd5\u9009\u4e2d\u4e86RFN1L6S\u4f5c\u4e3a600V\u8010\u538b\u30010.2A\u4ee5\u4e0a\u7684\u4e8c\u6781\u7ba1\u6765\u63a2\u8ba8\u5427\u3002<\/p>\n

\n
\"A4_8_rfn1l6s\"<\/div>\n
\"A4_8_vf-if\"<\/div>\n<\/div>\n

\u5728\u8010\u538b\u65b9\u9762\uff0cVR<\/sub>\u3001VRM<\/sub>\u90fd\u662f\u6700\u5927\u989d\u5b9a600V\uff0c\u4e0e\u8ba1\u7b97\u51fa\u7684\u503c\u4e00\u81f4\u3002IO<\/sub>\u4e3a0.8A\uff0c\u5728\u80fd\u529b\u65b9\u9762\u5bf9\u4e8e\u5b9e\u9645\u7684Iout 0.2A\u6765\u8bf4\u5177\u6709\u76f8\u5f53\u5927\u4f59\u91cf\uff0c\u4e0d\u8fc7\u8003\u8651\u5230\u5bb9\u8bb8\u529f\u7387\uff0c\u662f\u53ef\u4ee5\u5177\u5907\u8fd9\u4e2a\u7a0b\u5ea6\u7684\u4f59\u91cf\u7684\u3002\u53e6\u5916\uff0c\u4e0d\u4e00\u5b9a\u6709\u5b8c\u5168\u7b26\u5408\u8bbe\u8ba1\u89c4\u683c\u7684\u53d8\u5316\u3002\u6216\u8005\u8bf4\uff0c\u53ef\u80fd\u201c\u6b63\u597d\u201d\u7684\u60c5\u51b5\u5f88\u5c11\u3002\u4e0d\u7ba1\u600e\u6837\uff0c\u9700\u8981\u5728\u8fd1\u4f3c\u4e14\u6709\u4f59\u91cf\u7684\u60c5\u51b5\u4e0b\u9002\u5f53\u59a5\u534f\u3002<\/p>\n

\u8fd8\u6709\uff0c\u4e4b\u6240\u4ee5\u8bb0\u8f7d\u4e86VF<\/sub>\uff70IF<\/sub>\u7279\u6027\uff0c\u662f\u56e0\u4e3a\u901a\u8fc7\u8ba1\u7b97VF<\/sub>\u4e3a1V\uff0c\u53ef\u89c4\u683c\u4e2d\u89c4\u5b9a\u6700\u59271.45V\u3001Typ 1.15V\uff0c\u662f\u4e3a\u4e86\u5411\u6709\u201c\u63091V\u8ba1\u7b97\u53ef\u4ee5\u5417\uff1f\u201d\u7591\u95ee\u7684\u4eba\u89e3\u91ca\u3002IF<\/sub>\uff1d0.8A\u662fVF<\/sub>\u7684\u6761\u4ef6\u3002\u5b9e\u9645\u4f7f\u7528\u65f6\u7684IF<\/sub>\u4e3a0.2A\uff0c\u6240\u4ee5\u4ece\u66f2\u7ebf\u56fe\u4e2d\u53ef\u4ee5\u770b\u51fa\uff0c\u6c420.2A\u65f6\u7684VF<\/sub>\u65f6\uff0c\u5728\u6700\u6076\u52a3\u7684\u6e29\u5ea6\u6761\u4ef6\u4e0b\u4e5f\u57281V\u4ee5\u4e0b\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u8fd9\u4e2a\u8ba1\u7b97\u662f\u4f7f\u7528\u4e0e\u5b9e\u9645\u6761\u4ef6\u63a5\u8fd1\u7684\u6570\u503c\u8fdb\u884c\u7684\u3002<\/p>\n

\u81f3\u4e8e\u4f59\u91cf\u4fdd\u6301\u591a\u5927\u4e3a\u597d\uff0c\u8fd9\u53d6\u51b3\u4e8e\u7ecf\u9a8c\u3002\u4f59\u91cf\u8fc7\u5927\u4f1a\u9020\u6210\u8fc7\u5ea6\u8bbe\u8ba1\uff0c\u5bfc\u81f4\u6210\u672c\u548c\u5c3a\u5bf8\u589e\u52a0\uff0c\u4e8b\u5b9e\u4e0a\u6070\u5f53\u7684\u5224\u65ad\u662f\u5f88\u96be\u7684\u3002\u6700\u7ec8\u8fd8\u662f\u9700\u8981\u79ef\u7d2f\u7ecf\u9a8c\u3002<\/p>\n

\u867d\u7136\u8bf4\u7ecf\u9a8c\u5f88\u91cd\u8981\uff0c\u4e0d\u8fc7\u5728\u5b9e\u9645\u4f7f\u7528\u7684\u6761\u4ef6\u4e0b\u786e\u8ba4\u635f\u8017\u548c\u7ed3\u6e29\u662f\u5fc5\u987b\u73af\u8282\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u672c\u6587\u5c06\u4ecb\u7ecd\u8f93\u51fa\u6574\u6d41\u4e8c\u6781\u7ba1\u7684\u9009\u578b\u3002 \u8f93\u51fa\u6574\u6d41\u4e8c\u6781\u7ba1 D4 \u8f93\u51fa\u6574\u6d41\u4e8c\u6781\u7ba1\u4e5f\u79f0\u4e3a\u201cCatch Diode \u201d\u6216\u201cFreewheeling Diode\u201d\u3002\u53e6\u5916\uff0c\u5728\u540c\u6b65\u6574\u6d41\u578b\u4e8c\u6781\u7ba1\u4e2d\uff0c\u8fd9\u79cd\u4e8c\u6781\u7ba1\u88ab\u66ff\u6362\u4e3a\u6676\u4f53\u7ba1\uff0c\u5c31\u662f\u88ab\u79f0\u4e3a\u201c\u4f4e\u8fb9\u5f00 […]","protected":false},"author":1,"featured_media":18748,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[587],"tags":[26,333,646,702,757,758],"class_list":["post-5681","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-acdc_pwm04","tag-acdc","tag-333","tag-702","tag-catch-diode","tag-freewheeling-diode"],"acf":[],"wps_subtitle":"","_links":{"self":[{"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/posts\/5681","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/comments?post=5681"}],"version-history":[{"count":10,"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/posts\/5681\/revisions"}],"predecessor-version":[{"id":11593,"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/posts\/5681\/revisions\/11593"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/media\/18748"}],"wp:attachment":[{"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/media?parent=5681"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/categories?post=5681"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/tags?post=5681"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}