{"id":5972,"date":"2018-11-08T00:00:43","date_gmt":"2018-11-07T15:00:43","guid":{"rendered":"https:\/\/micro.wfjydl.com\/techweb\/?p=5972"},"modified":"2022-09-19T13:53:54","modified_gmt":"2022-09-19T05:53:54","slug":"%e6%8e%a5%e5%9c%b0","status":"publish","type":"post","link":"https:\/\/techclass.wfjydl.com\/knowledge\/dcdc\/dcdc_pwm\/dcdc_pwm03\/4838","title":{"rendered":"\u63a5\u5730"},"content":{"rendered":"<p>\u672c\u6587\u662f\u5173\u4e8e\u63a5\u5730\u5e03\u7ebf\u7684\u5e03\u5c40\u76f8\u5173\u5185\u5bb9\u4ecb\u7ecd\u3002\u7531\u4e8e\u63a5\u5730\u5e03\u7ebf\u662f\u4f17\u591a\u90e8\u4ef6\u5206\u522b\u9700\u8981\u7684\u5e03\u7ebf\uff0c\u6240\u4ee5\u9700\u8981\u597d\u597d\u8003\u8651\u5176\u5e03\u5c40\u3002\u53e6\u5916\uff0c\u6b63\u5982\u5728\u4e4b\u524d\u7684\u6587\u7ae0\u4e2d\u63d0\u5230\u7684\uff0c\u5728DC\/DC\u8f6c\u6362\u5668\u7535\u8def\u4e2d\uff0c\u4e0e\u63a7\u5236\u7535\u8def\u5bc6\u5207\u76f8\u5173\u7684\u8f93\u51fa\u7535\u538b\u7684\u53cd\u9988\u7b49\u4fe1\u53f7\u7cfb\u7edf\u548c\u5207\u6362\u5927\u7535\u6d41\u7684\u5f00\u5173\uff08\u529f\u7387\uff09\u7cfb\u7edf\u8981\u5206\u79bb\u662f\u975e\u5e38\u91cd\u8981\u7684\uff0c\u8fd9\u4e00\u70b9\u5728\u63a5\u5730\u5e03\u7ebf\u4e2d\u4e5f\u662f\u4e00\u6837\u7684\u3002<\/p>\n<div 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target=\"_blank\">\u566a\u58f0\u5bf9\u7b56\uff1a\u62d0\u89d2\u5e03\u7ebf\u3001\u4f20\u5bfc\u566a\u58f0\u3001\u8f90\u5c04\u566a\u58f0<\/a><\/li>\r\n\t\t\t<li><a href=\"https:\/\/techclass.wfjydl.com\/knowledge\/dcdc\/dcdc_pwm\/dcdc_pwm03\/5771\" target=\"_blank\">\u566a\u58f0\u5bf9\u7b56\uff1a\u7f13\u51b2\u7535\u8def\u3001\u81ea\u4e3e\u7535\u963b\u3001\u6805\u6781\u7535\u963b<\/a><\/li>\r\n\t\t<\/ul>\r\n\t<\/div>\r\n<\/div>\r\n\n<p style=\"margin-bottom: 10px;\"><strong>\u6a21\u62df\u5c0f\u4fe1\u53f7\u5730\u548c\u529f\u7387\u5730<\/strong><\/p>\n<p>\u201c\u63a5\u5730\u201d\u4f5c\u4e3a\u7535\u4f4d\u662f\u7b49\u7535\u4f4d\uff0c\u4f46\u5728\u6a21\u62df\u4fe1\u53f7\u548c\u6570\u5b57\u4fe1\u53f7\u6df7\u5408\u5b58\u5728\u7684\u7535\u8def\uff08\u8fd1\u5e74\u6765\u5927\u591a\u6570\u662f\u8fd9\u79cd\u60c5\u51b5\uff09\u4e2d\uff0c\u591a\u91c7\u7528\u5355\u72ec\u8bbe\u7f6e\u6a21\u62df\u5730\u548c\u6570\u5b57\u5730\uff0c\u4f7f\u6570\u5b57\u4fe1\u53f7\u5f15\u8d77\u7684\u566a\u58f0\u4e0d\u4f20\u9012\u7ed9\u5fae\u5c0f\u7684\u6a21\u62df\u4fe1\u53f7\u7684\u624b\u6cd5\u3002\u5728\u5f00\u5173\u7535\u6e90\u7535\u8def\uff08\u4e0d\u4ec5\u9650\u4e8eDC\/DC\u8f6c\u6362\u5668\uff09\u4e2d\u601d\u8def\u4e5f\u662f\u4e00\u6837\u7684\uff0c\u4f8b\u5982\uff0c\u7ebf\u8def\u7684\u7535\u538b\u503c\u76f4\u63a5\u5173\u7cfb\u5230\u8f93\u51fa\u7cbe\u5ea6\u7684\u53cd\u9988\u8def\u5f84\uff0c\u9700\u8981\u6ce8\u610f\u5c06\u5f00\u5173\u8282\u70b9\u4ea7\u751f\u7684\u566a\u58f0\u5f71\u54cd\u63a7\u5236\u5728\u6700\u4f4e\u9650\u5ea6\u3002<\/p>\n<p>\u79f0\u547c\uff08\u53eb\u6cd5\uff09\u6709\u597d\u51e0\u79cd\uff0c\u5728\u8fd9\u91cc\uff0c\u5c06\u50cf\u53cd\u9988\u8def\u5f84\u8fd9\u6837\u7684\u4e0d\u559c\u6b22\u566a\u58f0\u7684\u7ebf\u8def\u76f8\u5173\u7684\u63a5\u5730\u79f0\u4e3a\u201c\u6a21\u62df\u5c0f\u4fe1\u53f7\u5730\uff08AGND\uff09\u201d\uff0c\u5c06\u5207\u6362\u5f00\u5173\u8282\u70b9\u7b49\u5927\u7535\u6d41\u7684\u7ebf\u8def\u76f8\u5173\u7684\u63a5\u5730\u79f0\u4e3a\u201c\u529f\u7387\u5730\uff08PGND\uff09\u201d\u3002<\/p>\n<p>\u6700\u91cd\u8981\u7684\u5173\u952e\u70b9\u662f\uff1aAGND\u548cPGND\u5fc5\u987b\u662f\u5206\u79bb\u7684\u3002\u867d\u7136\u7535\u4f4d\u76f8\u540c\uff0c\u6700\u7ec8\u4e5f\u662f\u8981\u8fde\u63a5\u7684\uff0c\u4f46\u8fd9\u79cd\u505a\u6cd5\u662f\u51fa\u4e8e\u5c06\u201c\u5927\u7535\u6d41\u901a\u8fc7\u5f00\u5173\u8fd4\u56de\u7684GND\u201d\u548c\u201c\u63a7\u5236\u4fe1\u53f7\u7684GND\u201d\u5206\u5f00\u6765\u9632\u6b62\u5e72\u6270\u7684\u8003\u91cf\u3002<\/p>\n<p>\u63a5\u4e0b\u6765\uff0c\u539f\u5219\u4e0aPGND\u9700\u8981\u5728\u9876\u5c42\u6328\u5728\u4e00\u8d77\u5e03\u5c40\u914d\u7f6e\uff08Figure 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