{"id":498,"date":"2022-10-12T12:17:12","date_gmt":"2022-10-12T04:17:12","guid":{"rendered":"https:\/\/www.itvst.com\/?p=498"},"modified":"2022-10-12T12:17:12","modified_gmt":"2022-10-12T04:17:12","slug":"buck%e6%8b%93%e6%89%91%e7%bb%93%e6%9e%84%e7%9a%84dc-dc%e7%94%b5%e8%b7%af%e7%9a%84%e7%94%b5%e6%84%9f%e5%80%bc%e8%ae%a1%e7%ae%97","status":"publish","type":"post","link":"https:\/\/www.ingvs.com\/index.php\/2022\/10\/12\/buck%e6%8b%93%e6%89%91%e7%bb%93%e6%9e%84%e7%9a%84dc-dc%e7%94%b5%e8%b7%af%e7%9a%84%e7%94%b5%e6%84%9f%e5%80%bc%e8%ae%a1%e7%ae%97\/","title":{"rendered":"Buck\u62d3\u6251\u7ed3\u6784\u7684DC-DC\u7535\u8def\u7684\u7535\u611f\u503c\u8ba1\u7b97"},"content":{"rendered":"\n

\u4e00\u3001\u5e38\u7528\u4e09\u79cd\u57fa\u7840\u62d3\u6251\uff08buck\u3001boost\u3001buck-boost\uff09\u7684\u7535\u8def\u57fa\u7840\u3002<\/p>\n\n\n\n

  1. \u7535\u611f\u7684\u7535\u538b\u516c\u5f0fv(t)=L*di(t)\/dt\u4e5f\u5c31\u662fV=\u7535\u611f\u4e58\u4ee5\u7535\u6d41\u5bf9\u65f6\u95f4\u7684\u5012\u6570\uff0c\u63a8\u51fa\u0394I\uff1dV\u00d7\u0394T\/L\u3002<\/li>
  2. sw\u95ed\u5408\u65f6\uff0c\u7535\u611f\u901a\u7535\u7535\u538bVON\uff0c\u95ed\u5408\u65f6\u95f4tON sw\u5173\u65ad\u65f6\uff0c\u7535\u611f\u7535\u538bVOFF\uff0c\u5173\u65ad\u65f6\u95f4tOFF\u3002<\/li>
  3. \u529f\u7387\u53d8\u6362\u5668\u7a33\u5b9a\u5de5\u4f5c\u7684\u6761\u4ef6\uff1a\u0394ION\uff1d\u0394IOFF\u5373\uff0c\u7535\u611f\u5728\u5bfc\u901a\u548c\u5173\u65ad\u65f6\uff0c\u5176\u7535\u6d41\u53d8\u5316\u76f8\u7b49\u3002\u90a3\u4e48\u75311\uff0c2\u7684\u516c\u5f0f\u53ef\u77e5\uff0cVON \uff1dL\u00d7\u0394ION\/\u0394tON \uff0cVOFF \uff1dL\u00d7\u0394IOFF\/\u0394tOFF \uff0c\u5219\u7a33\u5b9a\u6761\u4ef6\u4e3a\u4f0f\u79d2\u5b9a\u5f8b\uff1aVON\u00d7tON\uff1dVOFF\u00d7tOFF\u3002<\/li>
  4. \u5468\u671fT\uff0c\u9891\u7387f\uff0cT\uff1d1\/f\uff0c\u5360\u7a7a\u6bd4D\uff1dtON\/T\uff1dtON\/\uff08tON\uff0btOFF\uff09\u2192tON\uff1dD\/f \uff1dTD
    \u2192tOFF\uff1d\uff081\uff0dD\uff09\/f\u3002<\/li><\/ol>\n\n\n\n

    \u4e8c\u3001Buck\u7535\u8def\u3002<\/p>\n\n\n\n

    \"\"<\/figure>\n\n\n\n
    1. \u7535\u5bb9\u7684\u8f93\u5165\u8f93\u51fa\u5e73\u5747\u7535\u6d41\u4e3a0\uff0c\u5728\u6574\u4e2a\u5468\u671f\u5185\u7535\u611f\u5e73\u5747\u7535\u6d41\uff1d\u8d1f\u8f7d\u5e73\u5747\u7535\u6d41\uff0c\u6240\u4ee5\u6709\uff1aIL\uff1dIo\u3002<\/li>
    2. \u4e8c\u6781\u7ba1\u53ea\u5728sw\u5173\u65ad\u65f6\u6d41\u8fc7\u7535\u6d41\uff0c\u6240\u4ee5ID\uff1dIL\u00d7\uff081\uff0dD\uff09\u3002<\/li>
    3. \u5219\u5e73\u5747\u5f00\u5173\u7535\u6d41Isw\uff1dIL\u00d7D\u3002<\/li>
    4. \u7531\u57fa\u5c14\u970d\u592b\u7535\u538b\u5b9a\u5f8b\u77e5\uff1a
      Sw\u5bfc\u901a\u65f6\uff1aVIN \uff1dVON\uff0bVO\uff0bVSW \u2192 VON\uff1dVIN\uff0dVO\uff0d VSW\u2248VIN\uff0dVO\u5047\u8bbeVSW\u76f8\u6bd4\u8db3\u591f\u5c0f
      VO\uff1dVIN\uff0dVON\uff0dVSW\u2248VIN\uff0dVON
      Sw\u5173\u65ad\u65f6\uff1aVOFF \uff1dVO\uff0bVD \u2192 VO\uff1dVOFF\uff0dVD\u2248VOFF \u5047\u8bbeVD\u76f8\u6bd4\u8db3\u591f\u5c0f<\/li>
    5. \u75313\u30014\u53ef\u5f97D\uff1dtON\/\uff08tON\uff0btOFF\uff09\uff1dVOFF\/\uff08VOFF \uff0b VON\uff09
      \u75318\u53ef\u5f97\uff1aD\uff1dVO\/{\uff08VIN\uff0dVO\uff09\uff0bVO}
      D\uff1dVO\/ VIN<\/li>
    6. \u76f4\u6d41\u7535\u6d41IDC\uff1d\u7535\u611f\u5e73\u5747\u7535\u6d41IL\uff0c\u5373IDC\u2261IL\uff1dIo \u89c15<\/li>
    7. \u7eb9\u6ce2\u7535\u6d41IAC\uff1d\u0394I\/2\uff1dVIN\uff081\uff0dD\uff09D\/ 2Lf\uff1dVO\uff081\uff0d D\uff09\/2Lf
      \u75311\uff0c3\u30014\u30019\u5f97\uff0c
      \u0394I\uff1dVON\u00d7tON\/L
      \uff1d\uff08VIN\uff0dVO\uff09\u00d7D\/Lf\uff1d\uff08VIN\uff0dDVIN\uff09\u00d7D\/Lf\uff1dVIN\uff081\uff0d D\uff09xD\/ Lf
      \u0394I\/ tON\uff1dVON\/L\uff1d\uff08VIN\uff0dVO\uff09\/L
      \u0394I\uff1dVOFF\u00d7tOFF\/L
      \uff1dVOT\uff081\uff0dD\uff09\/L
      \uff1dVO\uff081\uff0dD\uff09\/Lf
      \u0394I\/ tOFF\uff1dVOFF\/L\uff1dVO\/L<\/li>
    8. \u7535\u6d41\u7eb9\u6ce2\u7387r\uff1d\u0394I\/ IL\uff1d2IAC\/IDC \u5728\u4e34\u754c\u5bfc\u901a\u6a21\u5f0f\u4e0b\uff0cIAC \uff1dIDC\uff0c\u6b64\u65f6r\uff1d2 \u89c1P51
      r\uff1d\u0394I\/ IL\uff1dVON\u00d7D\/Lf IL\uff1d(VIN\uff0dVO)\u00d7D\/Lf IL
      \uff1dVO\uff26\uff26\u00d7\uff081\uff0dD\uff09\/Lf IL\uff1dVO\u00d7\uff081\uff0dD\uff09\/Lf IL<\/li>
    9. \u5cf0\u5cf0\u7535\u6d41IPP\uff1d\u0394I\uff1d2IAC\uff1dr\u00d7IDC\uff1dr\u00d7IL<\/li>
    10. \u5cf0\u503c\u7535\u6d41IPK\uff1dIDC\uff0bIAC\uff1d\uff081\uff0br\/2\uff09\u00d7IDC\uff1d\uff081\uff0br\/2\uff09 \u00d7IL\uff1d\uff081\uff0br\/2\uff09\u00d7IO
      \u6700\u6076\u52a3\u8f93\u5165\u7535\u538b\u7684\u786e\u5b9a\uff1a
      VO\u3001Io\u4e0d\u53d8\uff0cVIN\u5bf9IPK\u7684\u5f71\u54cd\uff1a
      D\uff1dVO\/ VIN VIN\u589e\u52a0\u2191\u2192D\u2193\u2192\u0394I\u2191, IDC\uff1dIO,\u4e0d\u53d8\uff0c\u6240\u4ee5 IPK\u2191\u3002<\/li><\/ol>\n\n\n\n

      \u4e09\u3001\u8bbe\u8ba1\u6848\u4f8b\u3002
      \u5982DC-DC\u96c6\u6210\u7535\u8def\u8f93\u5165\u7535\u538b\u8303\u56f4\u662f4.7-16V\uff0c\u73b0\u5728\u6709\u4e2a\u7535\u8def\u7528\u5b83\u6765\u628a12V\u8f6c\u4e3a3.3V\uff0c\u6700\u5927\u8f93\u51fa\u7535\u6d41\u662f2A\u3002\u5982\u679c\u5f00\u5173\u9891\u7387\u662f500KHz\uff0c\u90a3\u4e48\u7535\u611f\u7684\u63a8\u8350\u503c\u662f\u591a\u5927\uff1f
      \u89e3\uff1a<\/p>\n\n\n\n

      1. buck\u7535\u8def\u5728VIN=12V\u65f6\u8bbe\u8ba1\u7535\u611f\u3002<\/li>
      2. \u5360\u7a7a\u6bd4\uff1aD\uff1dVO\/ VIN\uff1d3.3\/12\uff1d0.275\u3002<\/li>
      3. L=VO\u00d7\uff081\uff0dD\uff09\/ rf I\uff1d3.3(1- 0.275)\/(0.4<\/em>500103<\/em>2)=5.98\u03bcH\u3002<\/li>
      4. IPK\uff1d\uff081\uff0br\/2\uff09\u00d7IO\uff1d\uff081+0.4\/2\uff09*2\uff1d2.4A\u3002<\/li>
      5. \u9700\u89815.98\u03bcH \u9971\u548c\u7535\u6d412.4A\u9644\u8fd1\u7684\u7535\u611f\u3002<\/li><\/ol>\n","protected":false},"excerpt":{"rendered":"

        \u4e00\u3001\u5e38\u7528\u4e09\u79cd\u57fa\u7840\u62d3\u6251\uff08buck\u3001boost\u3001buck-boost\uff09\u7684\u7535\u8def\u57fa\u7840\u3002 \u7535\u611f\u7684\u7535\u538b\u516c\u5f0fv(t)=L*d<\/p><\/div>\n

        \u9605\u8bfb\u66f4\u591a<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-498","post","type-post","status-publish","format-standard","hentry","category-electronics"],"_links":{"self":[{"href":"https:\/\/www.ingvs.com\/index.php\/wp-json\/wp\/v2\/posts\/498","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ingvs.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ingvs.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ingvs.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ingvs.com\/index.php\/wp-json\/wp\/v2\/comments?post=498"}],"version-history":[{"count":0,"href":"https:\/\/www.ingvs.com\/index.php\/wp-json\/wp\/v2\/posts\/498\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.ingvs.com\/index.php\/wp-json\/wp\/v2\/media?parent=498"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ingvs.com\/index.php\/wp-json\/wp\/v2\/categories?post=498"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ingvs.com\/index.php\/wp-json\/wp\/v2\/tags?post=498"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}