{"id":27682,"date":"2025-05-22T09:01:49","date_gmt":"2025-05-22T01:01:49","guid":{"rendered":"https:\/\/techclass.wfjydl.com\/?p=27682"},"modified":"2025-11-13T16:57:01","modified_gmt":"2025-11-13T08:57:01","slug":"%e7%ba%bf%e6%80%a7%e7%a8%b3%e5%8e%8b%e5%99%a8ic%e7%9a%84%e5%bc%95%e8%84%9a%e4%bf%9d%e6%8a%a4","status":"publish","type":"post","link":"https:\/\/techclass.wfjydl.com\/knowledge\/dcdc\/dcdc-ldo\/18823","title":{"rendered":"\u7ebf\u6027\u7a33\u538b\u5668IC\u7684\u5f15\u811a\u4fdd\u62a4"},"content":{"rendered":"<p>\u6839\u636e\u4f7f\u7528\u6761\u4ef6\u548c\u73af\u5883\u7684\u4e0d\u540c\uff0c\u9700\u8981\u5bf9\u7ebf\u6027\u7a33\u538b\u5668IC\u7684\u5f15\u811a\u8fdb\u884c\u4fdd\u62a4\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u516d\u79cd\u53ef\u80fd\u7684\u60c5\u51b5\u53ca\u76f8\u5e94\u7684\u4fdd\u62a4\u7535\u8def\u793a\u4f8b\u3002<\/p>\n<h2 id=\"toc1\">\u7ebf\u6027\u7a33\u538b\u5668IC\u7684\u5f15\u811a\u4fdd\u62a4<\/h2>\n<p>\u5982\u679c\u5728IC\u5f15\u811a\u4e0a\u65bd\u52a0\u53cd\u5411\u7535\u538b\u6216\u8fc7\u7535\u538b\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u8f93\u51fa\u7535\u538b\u65e0\u6cd5\u4e0a\u5347\uff0c\u751a\u81f3\u635f\u574fIC\u3002\u5728\u4e0b\u5217\u60c5\u51b5\u53ef\u80fd\u53d1\u751f\u65f6\uff0c\u5efa\u8bae\u91c7\u53d6\u9002\u5f53\u7684\u5f15\u811a\u4fdd\u62a4\u63aa\u65bd\uff1a<\/p>\n<ul class=\"nml_li\">\n<li>1. \u8f93\u5165\u8f93\u51fa\u7535\u538b\u6761\u4ef6\u53cd\u8f6c\u65f6\u2192\u53cd\u5411\u7535\u6d41\u65c1\u8def<\/li>\n<li>2. \u8f93\u51fa\u8d1f\u8f7d\u4e3a\u611f\u6027\u8d1f\u8f7d\u65f6\u2192\u8f93\u51fa\u7aef\u7684\u53cd\u5411\u7535\u538b\u4fdd\u62a4<\/li>\n<li>3. \u8f93\u5165\u6781\u6027\u53ef\u80fd\u53cd\u63a5\u65f6\u2192\u8f93\u5165\u7aef\u7684\u53cd\u5411\u7535\u538b\u4fdd\u62a4<\/li>\n<li>4. \u9700\u8981\u70ed\u63d2\u62d4\u65f6\u2192\u70ed\u63d2\u62d4\u4fdd\u62a4\u63aa\u65bd\uff08\u8f93\u5165\u7aef\u7684\u6d6a\u6d8c\u4fdd\u62a4\uff09<\/li>\n<li>5. \u4e0d\u540c\u7535\u6e90\u95f4\u5b58\u5728\u8d1f\u8f7d\u65f6\u2192\u53cd\u5411\u7535\u6d41\u65c1\u8def<\/li>\n<li>6. \u6b63\u8d1f\u7535\u6e90\uff08\u53cc\u7535\u6e90\uff09\u2192\u8f93\u51fa\u7aef\u7684\u53cd\u5411\u7535\u538b\u4fdd\u62a4<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3 id=\"toc2\">1. \u8f93\u5165\u8f93\u51fa\u7535\u538b\u6761\u4ef6\u53cd\u8f6c\u65f6 \u2192 \u53cd\u5411\u7535\u6d41\u65c1\u8def<\/h3>\n<p>\u5728\u8f93\u51fa\u7535\u5bb9\u5668\u5bb9\u91cf\u8f83\u5927\u7684\u7535\u8def\u4e2d\uff0c\u5982\u679c\u8f93\u5165\u7535\u6e90\u5173\u65ad\u540e\u8f93\u51fa\u7535\u5bb9\u5668\u4ecd\u6709\u7535\u8377\u6b8b\u7559\uff0c\u6216\u8f93\u5165\u7535\u6e90\u4e0b\u964d\u901f\u5ea6\u975e\u5e38\u5feb\u65f6\uff0c\u53ef\u80fd\u4f1a\u51fa\u73b0\u8f93\u51fa\u7535\u538b\u9ad8\u4e8e\u8f93\u5165\u8f93\u51fa\u7535\u538b\u7684\u53cd\u8f6c\u72b6\u6001\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u53cd\u5411\u7535\u6d41\u4f1a\u901a\u8fc7IC\u4e2d\u7684\u5bc4\u751f\u5143\u4ef6\u4ece\u8f93\u51fa\u7aef\u6d41\u5411\u8f93\u5165\u7aef\u3002\u7531\u4e8e\u5bc4\u751f\u5143\u4ef6\u4e0d\u662f\u4e3a\u4e86\u5de5\u4f5c\u800c\u914d\u7f6e\u7684\uff0c\u56e0\u6b64\u53ef\u80fd\u5bfc\u81f4\u5143\u4ef6\u52a3\u5316\u6216\u635f\u574f\u3002<\/p>\n<p>\u4f5c\u4e3a\u5bf9\u7b56\uff0c\u4e3a\u9632\u6b62\u53cd\u5411\u7535\u6d41\u6d41\u7ecfIC\u5185\u90e8\uff0c\u9700\u5728\u5916\u90e8\u8fde\u63a5\u53cd\u5411\u7535\u6d41\u65c1\u8def\u4e8c\u6781\u7ba1\uff08\u4e0b\u56fe\u5de6\u4fa7\uff09\u3002\u7136\u800c\uff0c\u5f53\u91c7\u7528\u8f93\u5165\u7ebf\u8def\u5f00\u8def\u8fdb\u884c\u5173\u65ad\u7684\u65b9\u5f0f\uff08\u4e0b\u56fe\u53f3\u4fa7\uff09\u65f6\uff0c\u53cd\u5411\u7535\u6d41\u503c\u4ec5\u4e3aIC\u7684\u504f\u7f6e\u7535\u6d41\uff0c\u6570\u503c\u7279\u522b\u5c0f\uff0c\u4e0d\u4f1a\u5bfc\u81f4\u5bc4\u751f\u5143\u4ef6\u52a3\u5316\u6216\u635f\u574f\uff0c\u56e0\u6b64\u4e0d\u9700\u8981\u4f7f\u7528\u65c1\u8def\u4e8c\u6781\u7ba1\u3002<\/p>\n<p class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2025\/05\/d13-14-f01.png\" alt=\"\u9006\u96fb\u6d41\u30d0\u30a4\u30d1\u30b9\u30c0\u30a4\u30aa\u30fc\u30c9\/\u5165\u529b\u3092\u30aa\u30fc\u30d7\u30f3\u306b\u3057\u305f\u5834\u5408\" width=\"690\" height=\"214\" \/><\/p>\n<p>\u65c1\u8def\u4e8c\u6781\u7ba1\u9700\u8981\u6bd4IC\u5185\u90e8\u7684\u5bc4\u751f\u5143\u4ef6\u66f4\u65e9\u5bfc\u901a\u3002MOSFET\u578b\u7ebf\u6027\u7a33\u538b\u5668\u4e2d\uff0c\u5176\u5185\u90e8\u5bc4\u751f\u5143\u4ef6\u7684\u5bfc\u901a\u7535\u538b\u7ea6\u4e3a0.6V\uff0c\u56e0\u6b64\u9700\u8981\u9009\u62e9\u6b63\u5411\u7535\u538b\\(V_F\\)\u4f4e\u4e8e\u6b64\u503c\u7684\u65c1\u8def\u4e8c\u6781\u7ba1\u3002<\/p>\n<p>\u53cd\u5411\u989d\u5b9a\u7535\u538b\u5e94\u9009\u62e9\u9ad8\u4e8e\u6240\u7528\u8f93\u5165\u8f93\u51fa\u7535\u538b\u5dee\u7684\u4ea7\u54c1\uff08\u964d\u989d80%\u4ee5\u4e0b\uff09\u3002\u6b63\u5411\u989d\u5b9a\u7535\u6d41\u5e94\u9009\u62e9\u5927\u4e8e\u53cd\u5411\u7535\u6d41\u503c\u7684\u4ea7\u54c1\uff08\u964d\u989d50%\u4ee5\u4e0b\uff09\u3002\u8003\u8651\u5230\u8fd9\u4e9b\u6761\u4ef6\uff0c\u63a8\u8350\u4f7f\u7528\u6574\u6d41\u4e8c\u6781\u7ba1\u6216\u8096\u7279\u57fa\u52bf\u5792\u4e8c\u6781\u7ba1\u3002<\/p>\n<p>\u4f46\u662f\u901a\u5e38\u8096\u7279\u57fa\u52bf\u5792\u4e8c\u6781\u7ba1\u7684\u53cd\u5411\u7535\u6d41\u8f83\u5927\uff0c\u6545\u5e94\u9009\u62e9\u8be5\u503c\u8f83\u5c0f\u7684\u4ea7\u54c1\u3002\u5982\u679c\u53cd\u5411\u7535\u6d41\u8f83\u5927\uff0c\u5373\u4f7f\u901a\u8fc7EN\u5f15\u811a\u5173\u95ed\u8f93\u51fa\uff0c\u4ecd\u4f1a\u6709\u8f83\u591a\u4e8c\u6781\u7ba1\u7684\u6f0f\u7535\u6d41\uff08\u53cd\u5411\u7535\u6d41\uff09\u4ece\u8f93\u5165\u7aef\u6d41\u5411\u8f93\u51fa\u7aef\uff0c\u56e0\u6b64\u9700\u8981\u9009\u62e9\u53cd\u5411\u7535\u6d41\u503c\u8f83\u5c0f\uff08\u5927\u7ea6\u4e3a1\u03bcA\u4ee5\u4e0b\uff09\u7684\u4ea7\u54c1\u3002<\/p>\n<p>&nbsp;<\/p>\n<h3 id=\"toc3\">2. \u8f93\u51fa\u8d1f\u8f7d\u4e3a\u611f\u6027\u8d1f\u8f7d\u65f6\u2192\u8f93\u51fa\u7aef\u7684\u53cd\u5411\u7535\u538b\u4fdd\u62a4<\/h3>\n<p>\u5f53\u8f93\u51fa\u8d1f\u8f7d\u4e3a\u611f\u6027\u8d1f\u8f7d\u65f6\uff0c\u5728\u8f93\u51fa\u7535\u538b\u5173\u65ad\u77ac\u95f4\uff0c\u611f\u6027\u8d1f\u8f7d\u4e2d\u84c4\u79ef\u7684\u80fd\u91cf\u4f1a\u91ca\u653e\u5230\u63a5\u5730\u7aef\u3002IC\u7684\u8f93\u51fa\u5f15\u811a\u4e0eGND\u5f15\u811a\u4e4b\u95f4\u6709\u5185\u90e8\u9759\u7535\u9632\u62a4\u4e8c\u6781\u7ba1\uff0c\u5927\u7535\u6d41\u6d41\u7ecf\u8be5\u4e8c\u6781\u7ba1\u65f6\u53ef\u80fd\u4f1a\u5bfc\u81f4IC\u635f\u574f\u3002\u4e3a\u9632\u6b62\u8fd9\u79cd\u60c5\u51b5\uff0c\u9700\u5728\u9759\u7535\u9632\u62a4\u4e8c\u6781\u7ba1\u4e0a\u5e76\u8054\u8096\u7279\u57fa\u52bf\u5792\u4e8c\u6781\u7ba1\uff08D1\uff09\uff08\u89c1\u4e0b\u56fe\uff09\u3002<\/p>\n<p class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2025\/05\/d13-14-f02.png\" alt=\"\u8a98\u5c0e\u6027\u8ca0\u8377\u306e\u96fb\u6d41\u7d4c\u8def\uff08\u51fa\u529bOFF\u6642\uff09\" width=\"389\" height=\"187\" \/><\/p>\n<p>\u53e6\u5916\uff0c\u5f53IC\u8f93\u51fa\u5f15\u811a\u4e0e\u8d1f\u8f7d\u901a\u8fc7\u8f83\u957f\u5bfc\u7ebf\u8fde\u63a5\u65f6\uff0c\u5bfc\u7ebf\u7684\u7535\u611f\u53ef\u80fd\u6210\u4e3a\u611f\u6027\u8d1f\u8f7d\u3002\u8bf7\u4f7f\u7528\u793a\u6ce2\u5668\u89c2\u5bdf\u6ce2\u5f62\uff0c\u67e5\u770b\u8f93\u51fa\u5173\u65ad\u65f6\u662f\u5426\u4ea7\u751f\u4e86\u77ac\u6001\u53cd\u5411\u7535\u538b\u3002<\/p>\n<p>\u6b64\u5916\uff0c\u5f53\u8d1f\u8f7d\u4e3a\u7535\u673a\u65f6\uff0c\u7535\u673a\u7684\u53cd\u7535\u52a8\u52bf\u4f1a\u5bfc\u81f4\u540c\u6837\u7684\u7535\u6d41\u6d41\u8fc7\uff0c\u56e0\u6b64\u9700\u8981\u914d\u7f6e\u4e8c\u6781\u7ba1\u3002<\/p>\n<p>&nbsp;<\/p>\n<h3 id=\"toc4\">3. \u8f93\u5165\u6781\u6027\u53ef\u80fd\u53cd\u63a5\u65f6 \u2192 \u8f93\u5165\u7aef\u7684\u53cd\u5411\u7535\u538b\u4fdd\u62a4<\/h3>\n<p>\u5c06\u7535\u6e90\u8fde\u63a5\u5230\u8f93\u5165\u7aef\u65f6\uff0c\u5982\u679c\u4e0d\u5c0f\u5fc3\u5c06\u6b63\u8d1f\u6781\u53cd\u63a5\uff0c\u4f1a\u6709\u5927\u7535\u6d41\u6d41\u8fc7IC\u8f93\u5165\u5f15\u811a\u548cGND\u5f15\u811a\u4e4b\u95f4\u7684\u9759\u7535\u9632\u62a4\u4e8c\u6781\u7ba1\uff0c\u53ef\u80fd\u5bfc\u81f4IC\u635f\u574f\uff08\u89c1\u201c\u8f93\u5165\u53cd\u63a5\u65f6\u7684\u7535\u6d41\u8def\u5f84\u201d\uff09\u3002\u9632\u53cd\u63a5\u7684\u6700\u7b80\u5355\u65b9\u6cd5\u662f\u5c06\u8096\u7279\u57fa\u52bf\u5792\u4e8c\u6781\u7ba1\u6216\u6574\u6d41\u4e8c\u6781\u7ba1\u4e0e\u7535\u6e90\u4e32\u8054\u8fde\u63a5\uff0c\u5982\u4ee5\u4e0b\u201c\u9632\u53cd\u63a5\u63aa\u65bd1\u201d\u6240\u793a\u3002<\/p>\n<p class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2025\/05\/d13-14-f08.png\" alt=\"\u5165\u529b\u3092\u9006\u63a5\u7d9a\u3057\u305f\u3068\u304d\u306e\u96fb\u6d41\u7d4c\u8def\/\u9006\u63a5\u7d9a\u5bfe\u7b561\" width=\"681\" height=\"184\" 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class=\"u-ff-mathjax\">V<sub>F<\/sub><\/span>\u66f4\u4f4e\u7684\u8096\u7279\u57fa\u52bf\u5792\u4e8c\u6781\u7ba1\u3002\u5728\u6b63\u786e\u8fde\u63a5\u72b6\u6001\u4e0b\uff0c\u5176\u5de5\u4f5c\u4e0e\u65e0\u4e8c\u6781\u7ba1\u65f6\u76f8\u540c\u3002\u53cd\u63a5\u65f6\uff0c\u7535\u6e90\u7684\u5168\u90e8\u7535\u6d41\u4f1a\u6301\u7eed\u6d41\u5411\u4e8c\u6781\u7ba1\uff0c\u4ea7\u751f\u4e25\u91cd\u53d1\u70ed\uff0c\u5982\u679c\u8f93\u5165\u7535\u6e90\u7684\u7535\u6d41\u5bb9\u91cf\u5f88\u5927\uff0c\u4f1a\u5bfc\u81f4\u635f\u574f\u3002\u8be5\u7535\u8def\u662f\u4e3a\u4e86\u4fdd\u62a4\u7535\u8def\u514d\u53d7\u77ed\u6682\u758f\u5ffd\u6027\u53cd\u63a5\u7684\u5f71\u54cd\uff0c\u6216\u4ee5\u524d\u7aef\u7535\u6e90\u5df2\u914d\u5907\u8fc7\u7535\u6d41\u4fdd\u62a4\u7535\u8def\u4e3a\u524d\u63d0\u7684\u3002<\/p>\n<p>\u82e5\u60f3\u5728\u6b64\u4fdd\u62a4\u7535\u8def\u4e2d\u8fdb\u4e00\u6b65\u63d0\u9ad8\u5b89\u5168\u6027\uff0c\u53ef\u4ee5\u5982\u201c\u9632\u53cd\u63a5\u63aa\u65bd3\u201d\u6240\u793a\uff0c\u5728\u7535\u6e90\u4e0a\u4e32\u8054\u4fdd\u9669\u4e1d\u3002\u867d\u7136\u4fdd\u9669\u4e1d\u9700\u8981\u7ef4\u62a4\uff0c\u4f46\u5b83\u80fd\u66f4\u53ef\u9760\u5730\u4fdd\u62a4\u7535\u8def\u3002<\/p>\n<p 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4\/\u9006\u63a5\u7d9a\u5bfe\u7b56 5\" width=\"703\" height=\"180\" \/><\/p>\n<p>&nbsp;<\/p>\n<h3 id=\"toc5\">4. \u9700\u8981\u70ed\u63d2\u62d4\u65f6 \u2192 \u70ed\u63d2\u62d4\u4fdd\u62a4\u63aa\u65bd\uff08\u8f93\u5165\u7aef\u7684\u6d6a\u6d8c\u4fdd\u62a4\uff09<\/h3>\n<p>\u5728\u4f9b\u7535\u4fa7\uff08\u8f93\u5165\uff09\u7535\u6e90\u5f00\u542f\u7684\u60c5\u51b5\u4e0b\u5c06\u7ebf\u8def\u8fde\u63a5\u5230IC\u7684\u8f93\u5165\u7aef\u65f6\uff0c\u7531\u4e8e\u7ebf\u8def\u7535\u611f\u5206\u91cf\u4e0e\u8fde\u63a5\u63d2\u5934\u7684\u91d1\u5c5e\u63a5\u89e6\u4f1a\u4ea7\u751f\u8109\u51b2\u6ce2\u5f62\u3002\u82e5\u8be5\u6d6a\u6d8c\u7535\u538b\u8d85\u8fc7IC\u7684\u7edd\u5bf9\u6700\u5927\u989d\u5b9a\u503c\uff0c\u53ef\u80fd\u5bfc\u81f4IC\u635f\u574f\u3002\u4e3a\u9632\u6b62\u6d6a\u6d8c\u7535\u538b\u65bd\u52a0\u5230IC\u7684\u8f93\u5165\u5f15\u811a\uff0c\u53ef\u91c7\u7528TVS\uff08Transient Voltage Suppressor\uff09\u4e8c\u6781\u7ba1\uff08\u4e0b\u56fe\\(D_1\\)\uff09\u6765\u5438\u6536\u6d6a\u6d8c\u4ee5\u5b9e\u73b0\u4fdd\u62a4\u3002<\/p>\n<p class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2025\/05\/d13-14-f05.png\" alt=\"\u30db\u30c3\u30c8\u30d7\u30e9\u30b0\u5bfe\u7b56\" width=\"328\" height=\"144\" \/><\/p>\n<p>&nbsp;<\/p>\n<h3 id=\"toc6\">5. 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\u8f93\u51fa\u7aef\u7684\u53cd\u5411\u7535\u538b\u4fdd\u62a4<\/h3>\n<p>\u5728\u5982\u4e0b\u6240\u793a\u7684\u6b63\u8d1f\u7535\u6e90\u4e2d\uff0c\u5404\u7535\u6e90\u7684\u4e0a\u5347\u901f\u5ea6\u5b58\u5728\u5dee\u5f02\u3002\u5f53\u6b63\u8d1f\u7535\u6e90\u95f4\u5b58\u5728\u8d1f\u8f7d\u65f6\uff0c\u5148\u884c\u4e0a\u5347\u7684\u7535\u6e90\u4f1a\u901a\u8fc7\u8d1f\u8f7d\u4ece\u53e6\u4e00\u4e2a\u7684\u8f93\u51fa\u7aef\u6c72\u53d6\u7535\u6d41\uff0c\u4ece\u800c\u5bfc\u81f4\u53cd\u5411\u7535\u538b\u65bd\u52a0\u5230\u8f93\u51fa\u7aef\u3002\u4e3a\u9632\u6b62IC\u635f\u574f\u53ca\u8f93\u51fa\u7535\u538b\u65e0\u6cd5\u4e0a\u5347\uff0c\u9700\u8981\u5728\u8f93\u51fa\u7aef\u4e0eGND\u4e4b\u95f4\u8fde\u63a5\\(V_F\\)\u66f4\u4f4e\u7684\u8096\u7279\u57fa\u52bf\u5792\u4e8c\u6781\u7ba1\uff08\\(D_1\\)\u548c\\(D_2\\)\uff09\uff0c\u4ee5\u5b9e\u73b0\u8f93\u51fa\u7aef\u7684\u53cd\u5411\u7535\u538b\u4fdd\u62a4\u3002<\/p>\n<p class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2025\/05\/d13-14-f07.png\" alt=\"\u6b63\u8ca0\u96fb\u6e90\u306e\u30c0\u30a4\u30aa\u30fc\u30c9\u306e\u5165\u308c\u65b9\u3068\u8ca0\u96fb\u6e90\u30ec\u30ae\u30e5\u30ec\u30fc\u30bf\u304c\u5148\u306b\u7acb\u3061\u4e0a\u304c\u3063\u305f\u5834\u5408\u306e\u96fb\u6d41\u7d4c\u8def\" width=\"376\" height=\"283\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"\u6839\u636e\u4f7f\u7528\u6761\u4ef6\u548c\u73af\u5883\u7684\u4e0d\u540c\uff0c\u9700\u8981\u5bf9\u7ebf\u6027\u7a33\u538b\u5668IC\u7684\u5f15\u811a\u8fdb\u884c\u4fdd\u62a4\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u516d\u79cd\u53ef\u80fd\u7684\u60c5\u51b5\u53ca\u76f8\u5e94\u7684\u4fdd\u62a4\u7535\u8def\u793a\u4f8b\u3002 \u7ebf\u6027\u7a33\u538b\u5668IC\u7684\u5f15\u811a\u4fdd\u62a4 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