{"id":1226,"date":"2018-10-26T14:41:30","date_gmt":"2018-10-26T14:41:30","guid":{"rendered":""},"modified":"2018-10-26T22:41:56","modified_gmt":"2018-10-26T14:41:56","slug":"%e7%94%b5%e8%b7%af%e6%8e%a5%e5%9c%b0%e4%b8%8e%e4%be%9b%e7%94%b5%e6%a8%a1%e5%9d%97%e5%8e%9f%e7%90%86%e8%a7%a3%e6%9e%90","status":"publish","type":"post","link":"http:\/\/www.szryc.com\/?p=1226","title":{"rendered":"\u7535\u8def\u63a5\u5730\u4e0e\u4f9b\u7535\u6a21\u5757\u539f\u7406\u89e3\u6790"},"content":{"rendered":"

\n\t\u3000\u968f\u7740\u7535\u5b50\u4ea7\u54c1\u5c3a\u5bf8\u53d8\u5f97\u8d8a\u6765\u8d8a\u7d27\u51d1\u3001\u529f\u80fd\u8d8a\u6765\u8d8a\u5f3a\u5927\u3001\u7528\u9014\u66f4\u52a0\u5e7f\u6cdb\uff0c\u6700\u7ec8\u7684\u7cfb\u7edf\u7ea7\u8981\u6c42\uff0c\u4ee5\u53ca\u79fb\u52a8\u548c\u56fa\u5b9a\u8bbe\u5907\u7684\u590d\u6742\u6027\u4e5f\u53d8\u5f97\u65e5\u76ca\u7a81\u51fa\u3002\u8fd9\u79cd\u590d\u6742\u6027\u6765\u6e90\u4e8e\u8981\u6c42\u5728\u6a21\u62df\u548c\u6570\u5b57\u7535\u8def\u4e4b\u95f4\u5b9e\u73b0\u65e0\u7ebf\u548c\u6709\u7ebf\u7684\u4e92\u8fde\uff0c\u9700\u8981\u7cfb\u7edf\u5de5\u7a0b\u5e08\u4f7f\u7528\u591a\u4e2a\u7535\u6e90\u8f68\u548c\u6df7\u5408\u7535\u8def\u8bbe\u8ba1\u3002\u5177\u6709\u6a21\u62df\u548c\u6570\u5b57\u4fe1\u53f7\u7684\u7535\u8def\u4e00\u822c\u503e\u5411\u4e8e\u8bbe\u7f6e\u51e0\u4e2a\u63a5\u5730\u53c2\u8003\uff0c\u8fd9\u6837\u7ecf\u5e38\u5bfc\u81f4\u7535\u8def\u6742\u4e71\u65e0\u7ae0\uff0c\u8bbe\u8ba1\u76ee\u7684\u65e0\u6cd5\u5b9e\u73b0\uff0c\u8868\u9762\u4e0a\u770b\u4e0a\u53bb\u5f88\u53ef\u9760\u7684\u65b9\u6848\u5374\u6700\u7ec8\u6210\u4e3a\u6545\u969c\u4e4b\u6e90\u3002\u8fd9\u91cc\u5c06\u91cd\u70b9\u653e\u5728\u7406\u89e3\u7535\u8def\u7684\u9700\u6c42\u548c\u9884\u5148\u89c4\u5212\u6700\u7ec8\u7684\u7cfb\u7edf\uff0c\u56e0\u4e3a\u8fd9\u4e24\u4e2a\u6b65\u9aa4\u7684\u7ed3\u679c\u662f\u6709\u6548\u5730\u628a\u56fe\u7eb8\u8f6c\u53d8\u4e3a\u6700\u7ec8\u7684\u5370\u5237\u7535\u8def\u677f\u3002\u5728\u8bbe\u8ba1\u9636\u6bb5\u82b1\u4e00\u4e9b\u65f6\u95f4\u4ece\u7535\u6d41\u8def\u5f84\u548c\u566a\u58f0\u654f\u611f\u6027\u7684\u89d2\u5ea6\u6765\u8003\u8651\u4e00\u4e2a\u590d\u6742\u7cfb\u7edf\u7684\u6bcf\u4e2a\u529f\u80fd\u6a21\u5757\uff0c\u7136\u540e\u6839\u636e\u7535\u6d41\u603b\u662f\u5728\u4e00\u4e2a\u5faa\u73af\u56de\u8def\u4e2d\u6d41\u52a8\u7684\u7b80\u5355\u516c\u7406\u6765\u8bbe\u7f6e\u8fd9\u4e9b\u6a21\u5757\u53ca\u4f9b\u7535\u7535\u8def\uff0c\u8fd9\u6837\u5f53\u4eca\u7cfb\u7edf\u5de5\u7a0b\u5e08\u6240\u9762\u5bf9\u7684\u590d\u6742\u7535\u8def\u5c31\u53ef\u4ee5\u5206\u89e3\u4e3a\u8bb8\u591a\u53ef\u7ba1\u7406\u7684\u90e8\u5206\uff0c\u4ee5\u4fbf\u5b9e\u73b0\u6700\u7ec8\u7684\u53ef\u9760\u8bbe\u8ba1\u3002<\/p>\n

\n\t\u3000\u3000\u7b80\u5355\u7535\u8def\u7684\u7535\u6e90\u548c\u63a5\u5730\u5206\u6790<\/strong><\/p>\n

\n\t <\/div>\n

\n\t\u3000\u3000\u4e3a\u4e86\u8bc1\u660e\u8be5\u7406\u8bba\uff0c\u8ba9\u6211\u4eec\u6765\u770b\u4e00\u4e2a\u7b80\u5355\u7684\u7535\u8def\u5e76\u8003\u8651\u6240\u793a\u7684\u8fde\u63a5\u3002\u8be5\u57fa\u672c\u7535\u8def\u5305\u62ec\u4e09\u4e2a\u8981\u7d20\uff0c\u4e00\u4e2a\u4f4e\u538b\u5dee\uff08LDO\uff09\u7ebf\u6027\u8c03\u8282\u5668\uff0c\u4e00\u4e2a\u5fae\u5904\u7406USB \u6570\u636e\u7ebf\u63a5\u5230\u97f3\u9891\u9a71\u52a8\u5668\uff0c\u548c\u4e00\u4e2a\u626c\u58f0\u5668\uff0c\u6240\u6709\u8fd9\u4e9b\u90fd\u7531\u4e00\u4e2a\u8fde\u63a5\u5230\u67d0\u4e2a\u8ba1\u7b97\u4e3b\u673a\u7684USB\u63d2\u5934\u4f9b\u7535\u3002\u5728\u672c\u4f8b\u4e2d\uff0cUSB\u5230\u97f3\u9891\u9a71\u52a8\u5668\u5fc5\u987b\u75283.3V\u4f9b\u7535\u3002\u7531\u4e8e\u626c\u58f0\u5668\u91c7\u7528\u97f3\u9891\u9a71\u52a8\u5668\u7684\u8f93\u51fa\u4f9b\u7535\uff0c\u6240\u4ee5\u97f3\u9891\u8f93\u5165\u9a71\u52a8\u5668\u9700\u8981+3.3V LDO\uff0c\u5176\u7531USB\u8fde\u63a5\u5668\u4f9b\u7535\uff08+5V\uff09\uff0c\u8fd9\u4f3c\u4e4e\u53ef\u4ee5\u5f97\u5230\u4e00\u4e2a\u663e\u800c\u6613\u89c1\u7684\u7ed3\u8bba\uff0c\u5373\u53ef\u5c06\u5b83\u4eec\u653e\u7f6e\u5728\u56fe1\uff08a\uff09\u539f\u7406\u56fe\u6240\u793a\u7684\u4f4d\u7f6e\u3002\u4f46\u662f\uff0c\u5728\u8fd9\u79cd\u6846\u67b6\u4e0b\uff0c\u9a71\u52a8\u626c\u58f0\u5668\u5de5\u4f5c\u7684\u7535\u6d41\u5728\u8fd4\u56de\u5230\u7535\u6d41\u6e90\u9a71\u52a8\u5668\u65f6\u4f1a\u4ea7\u751f\u4e00\u4e2a\u7535\u538b\u53cd\u5f39\uff0c\u8be5\u7535\u538b\u53cd\u5f39\u4f1a\u53cd\u8fc7\u6765\u4f5c\u7528\u4e8eLDO\u5e76\u6700\u7ec8\u5f71\u54cd\u5230USB \u8fde\u63a5\u5668\u3002\u5728\u672c\u4f8b\u4e2d\uff0c\u628aUSB\u6570\u636e\u8f6c\u6362\u4e3a\u97f3\u4e50\u7684\u57fa\u51c6\u7535\u538b\u4f1a\u4ee5\u97f3\u4e50\u64ad\u653e\u7684\u901f\u7387\u53cd\u5f39\u3002\u7531\u4e8e\u626c\u58f0\u5668\u7535\u611f\u6240\u4ea7\u751f\u7684\u76f8\u79fb\u4f1a\u589e\u5927\u8bef\u5dee\uff0c\u8fd9\u5c06\u548c\u7531\u4e8e\u7535\u6d41\u63d0\u5347\u4ea7\u751f\u7684\u9ad8\u97f3\u91cf\u6df7\u5408\u5728\u4e00\u8d77\u3002\u7535\u538b\u53cd\u5f39\u4e5f\u5c06\u5bfc\u81f4\u7eb9\u6ce2\u51fa\u73b0\uff0c\u8fd9\u5c06\u964d\u4f4e\u626c\u58f0\u5668\u53d1\u51fa\u7684\u97f3\u8d28\u3002<\/p>\n

\n\t\u3000\u3000\u8fd9\u5c06\u51cf\u5c11\u5230\u8fbeDC\u7684\u7eb9\u6ce2\uff0c\u4e4b\u540e\u7535\u6d41\u53ea\u5f15\u8d77\u7535\u538b\u964d\uff0c\u5e76\u4e14\u4e0d\u4f1a\u968f\u65f6\u95f4\u800c\u53d8\u5316\u5f88\u591a\uff08\u4e0a\u9762\u7b49\u5f0f\u4e2d\u7684Δt\u5e94\u8be5\u88ab\u89c6\u4e3a\u53ef\u542c\u9891\u738712~14kHz\u7684\u5e73\u5747\u503c\uff09\u3002\u901a\u8fc7\u5728\u5404IC\u4e4b\u95f4\u4f7f\u7528\u8f83\u5bbd\u7684\u7535\u6e90\u548cGND\u8fde\u63a5\u6765\u9650\u5236\u7531\u6b27\u59c6\u5b9a\u5f8b\u6240\u5f97\u5230\u7684\u7535\u538b\u964d\u503c\uff08\u7535\u6d41\u4e0e\u7535\u963b\u7684\u4e58\u79ef\uff09\uff0c\u53ef\u63a7\u5236\u8bef\u5dee\u7684\u5927\u5c0f\u3002<\/p>\n

\n\t\u3000\u3000\"\u7535\u8def\u63a5\u5730\u4e0e\u4f9b\u7535\u6a21\u5757\u539f\u7406\u89e3\u6790\"<\/p>\n

\n\t\u3000\u3000\u56fe1\uff1a\u4e00\u4e2a\u7b80\u5355\u7684\u7535\u8def\u8868\u660e\u7535\u6e90\u7535\u8def\u4f1a\u5f15\u8d77\u53cd\u5f39\uff0c\u800c\u4e14\u4f1a\u8fd4\u56de\u7535\u6e90\u3002<\/p>\n

\n\t\u3000\u3000GND\u548c\u7535\u6e90\u7ebf\u7684\u5bbd\u5ea6\u5e94\u5f53\u6839\u636e\u53ef\u63a5\u53d7\u7684\u635f\u8017\u6765\u786e\u5b9a\u3002\u5bf9\u4e8e\u5178\u578b\u76841\u76ce\u53f8\u94dc\u5370\u5237\u7535\u8def\u677f\uff0c\u5176\u7535\u963b\u53ef\u4ee5\u4f30\u7b97\u5927\u7ea6\u4e3a\u6bcf\u5e73\u65b90.5mΩ\u3002\u7531\u4e8e\u6b64\u95ee\u9898\u4e0d\u80fd\u603b\u662f\u901a\u8fc7\u6dfb\u52a0\u7535\u5bb9\u53bb\u7f13\u89e3\uff0c\u800c\u5e94\u8be5\u91c7\u7528Figure 1\uff08b\uff09\u4e2d\u7684\u65b9\u6848\u6765\u4ece\u6839\u672c\u4e0a\u89e3\u51b3\u3002LDO\u662f\u653e\u5728\u97f3\u9891\u9a71\u52a8IC\u7684\u4e0a\u65b9\uff0c\u53ef\u4ee5\u4f7f\u7acb\u4f53\u58f0\u7535\u6d41\u56de\u8def\u907f\u514d\u4e86\u654f\u611f\u7684\u97f3\u9891\u9a71\u52a8GND\uff0c\u8fd9\u6837\u4ea7\u751f\u7684GND\u7535\u538b\u53cd\u5f39\u4e0d\u4f1a\u5f71\u54cd\u97f3\u9891\u9a71\u52a8\uff0c\u53ea\u6709\u5c0f\u7684\u7eb9\u6ce2\u5e72\u6270\u51fa\u73b0\u3002<\/p>\n

\n\t\u3000\u3000\u590d\u6742\u7535\u8def\u7684\u7535\u6e90\u548c\u63a5\u5730\u4f18\u5316\u7b56\u7565<\/strong><\/p>\n

\n\t\u3000\u3000\u5728\u4e0a\u9762\u7684\u5e94\u7528\u6848\u4f8b\u4e2d\uff0c\u53ea\u6709\u4e24\u4e2a\u7535\u6d41\u56de\u8def\u3002\u73b0\u5728\uff0c\u6211\u4eec\u6362\u4e00\u4e2a\u66f4\u590d\u6742\u7684\u4f8b\u5b50\u3002\u4e0b\u9762\u8003\u8651\u7684\u662f\u4e00\u4e2a\u8f83\u4e3a\u590d\u6742\u7684\u5e73\u677f\u7535\u8111\u7cfb\u7edf\u3002\u5728\u672c\u4f8b\u4e2d\uff0c\u5e73\u677f\u7535\u8111\u5305\u62ec\u80cc\u5149\u3001\u89e6\u5c4f\u3001\u6444\u50cf\u5934\u3001\u5145\u7535\u7cfb\u7edf\uff08USB\u548c\u65e0\u7ebf\uff09\u3001\u84dd\u7259\u3001WiFi\u3001\u97f3\u9891\u8f93\u51fa\uff08\u626c\u58f0\u5668\uff0c\u8033\u673a\uff09\u3001\u4ee5\u53ca\u7528\u4e8e\u5b58\u50a8\u6570\u636e\u7684\u5b58\u50a8\u5668\u3002\u5f53\u7136\uff0c\u8fd9\u4e9b\u5e94\u7528\u7684\u5927\u90e8\u5206\u90fd\u9700\u8981\u4e0d\u540c\u7535\u538b\u7684\u7535\u6e90\u8f68\u4ee5\u4fbf\u66f4\u597d\u5730\u5de5\u4f5c\u3002\u5982\u56fe2\u6240\u793a\uff0c\u8be5\u7cfb\u7edf\u5177\u6709\u4e94\u4e2a\u7535\u6e90\u8f68\u548c\u4e24\u79cd\u7ed9\u7535\u6c60\u5145\u7535\u7684\u65b9\u6cd5\uff0c\u8fd9\u610f\u5473\u7740\u81f3\u5c11\u4f1a\u6709\u4e94\u4e2a\u7535\u6d41\u56de\u8def\u3002\u4f46\u76f8\u6bd4\u76f4\u6d41\u7535\u6e90\uff0c\u4ee5\u53ca\u76f8\u5173\u7684\u5404\u6761\u7535\u6d41\u8def\u5f84\uff0c\u5b9e\u9645\u5e94\u7528\u4e2d\u6709\u66f4\u591a\u9700\u8981\u8003\u8651\u7684\u65b9\u9762\u3002\u7535\u8def\u4e2d\u6709\u591a\u4e2a\u5f00\u5173\u7a33\u538b\u5668\uff0c\u5e7f\u64ad\u548c\u63a5\u6536\u5929\u7ebf\u7cfb\u7edf\uff0c\u6240\u6709\u8fd9\u4e9b\u90fd\u9700\u8981\u4f7f\u7528\u5fae\u5904\u7406\u5668\u6765\u534f\u8c03\u548c\u63a7\u5236\u3002\u5c55\u793a\u7684\u4e0e\u7535\u6e90\u548c\u5b83\u4eec\u4f9b\u7535\u7684\u6a21\u5757\u76f8\u5173\u8054\u7684\u7535\u6e90\u8def\u5f84\u548cGND\u8def\u5f84\uff0c\u6709\u52a9\u4e8e\u5c06\u7535\u6e90\u548c\u8d1f\u8f7d\u7535\u6d41\u8bc4\u4f30\u8fdb\u884c\u6c47\u603b\uff0c\u4ece\u800c\u5b9e\u73b0\u4ee5\u4e0b\u76ee\u7684\uff1a<\/p>\n

\n\t\u3000\u3000\u5728\u56fe2\u4e2d\uff0c\u4e3b\u7535\u6e90\u8f68\u5df2\u88ab\u989c\u8272\u7f16\u7801\uff0c\u6d41\u7ecf\u76f8\u5e94GND\u7b26\u53f7\u5904\u7684\u7535\u6d41\u5df2\u88ab\u5339\u914d\u5230\u63d0\u4f9b\u7535\u6d41\u7684\u7535\u6e90\u8f68\u3002\u4f8b\u5982\uff0c\u6bcf\u4e00\u4e2a\u4e0e\u7535\u6c60\u5145\u7535\u4e0d\u76f8\u5173\u7684\u90e8\u4ef6\uff08\u7ea2\u8272\uff09\uff0c\u6709\u4e00\u4e2a\u7aef\u7535\u6d41\u8fd4\u56de\u5230\u7535\u6c60\uff0c\u4f46USB\u5230\u97f3\u9891IC\u75313.3V BUCK\u8c03\u8282\u5668\u4f9b\u7535\uff0c\u800c\u5b83\u662f\u75315V Boost\u8c03\u8282\u5668\u4f9b\u7535\u7684\uff0c\u4e4b\u540e\u63a5\u5230\u7535\u6c60\u3002\u56e0\u6b64\uff0cGND\u7535\u6d41\u4ece\u97f3\u9891IC\u6309\u5148\u540e\u987a\u5e8f\u8fd4\u56de\u5230\u5404\u8c03\u8282\u5668\uff0c\u7136\u540e\u5230\u8fbe\u7535\u6c60\uff0c\u97f3\u9891IC\u7535\u6d41\u4e0d\u4f1a\u76f4\u63a5\u8fd4\u56de\u5230\u7535\u6c60\u3002<\/p>\n

\n\t\u3000\u3000\"\u7535\u8def\u63a5\u5730\u4e0e\u4f9b\u7535\u6a21\u5757\u539f\u7406\u89e3\u6790\"<\/p>\n

\n\t\u3000\u3000\u56fe2\uff1a\u5178\u578b\u7684\u79fb\u52a8\u5e73\u677f\u7535\u8111\u793a\u610f\u56fe\u6a21\u5757\u3002<\/p>\n

\n\t\u3000\u3000\u56fe2\u6240\u793a\u7684\u7cfb\u7edf\u91c7\u7528\u4e86\u4e00\u4e2a\u9502\u79bb\u5b50\u7535\u6c60\uff0c\u901a\u8fc7USB\u5145\u7535\u5668\u6216\u65e0\u7ebf\u529f\u7387\u53d1\u5c04\u5668\u548c\u63a5\u6536\u5668\u53ef\u4ee5\u8fdb\u884c\u5145\u7535\u3002\u7535\u6c60\u7535\u538b\u53ef\u88ab\u5347\u538b\u5230+ 5V\uff08\u7528\u4e8e\u76f8\u673a\u53d8\u7126\u9a6c\u8fbe\u3001\u9488\u5bf9\u5fae\u5904\u7406\u5668\u7684+3.3V\u964d\u538b\u8c03\u8282\u5668\u3001\u97f3\u9891\u548c\u89e6\u6478\u5c4f\uff09\uff0c\u53ef\u964d\u538b\u5230+ 1.2V\uff08\u7528\u4e8e\u5fae\u5904\u7406\u5668\u3001\u5b58\u50a8\u5668\u3001\u84dd\u7259\u548cWiFi\uff09\uff0c\u4e5f\u53ef\u5347\u538b\u5230+ 7V\u7528\u4e8e\u76f8\u673a\u95ea\u5149\u706f\u3002\u663e\u7136\uff0c\u7535\u538b\u8c03\u8282\u5668\u5e94\u653e\u5728\u5404\u81ea\u7684\u8d1f\u8f7d\u9644\u8fd1\uff0c\u4f46\u6700\u7ec8\u7531\u4e8e\u4ea7\u54c1\u5f62\u72b6\u5c3a\u5bf8\u7684\u9650\u5236\uff0c\u901a\u5e38\u8feb\u4f7f\u8bbe\u8ba1\u8005\u628a\u8d1f\u8f7d\u653e\u5728\u8ddd\u79bb\u7535\u6e90\u8f83\u8fdc\u7684\u4f4d\u7f6e\uff0c\u6216\u5728\u7535\u8def\u677f\u5468\u56f4\u6df7\u6742\u653e\u7f6e\u3002\u53ef\u4ee5\u770b\u51fa\uff0c\u6bcf\u4e2a\u7535\u6e90\u9700\u8981\u652f\u6301\u591a\u4e2a\u8d1f\u8f7d\uff0c\u56e0\u6b64\u5fc5\u987b\u91c7\u7528\u7cbe\u5fc3\u7b56\u5212\u7684\u5e03\u7ebf\u548c\u5e03\u5c40\u65b9\u6848\u6765\u63a7\u5236\u7535\u6d41\u8def\u5f84\u548c\u65e0\u610f\u4ea7\u751f\u7684EMI\u3002\u8fd9\u91cc\u662f\u4e00\u4e9b\u91cd\u8981\u7684\u5e03\u5c40\u8003\u8651\u56e0\u7d20\uff1ai\uff09\u53ef\u7528\u7684\u7a7a\u95f4\uff0c\u2171\uff09\u673a\u68b0\u65b9\u9762\u7684\u7ea6\u675f\uff0c\u2172\uff09\u7535\u6e90\u548cGND\u8f68\u53ef\u63a5\u53d7\u7684\u7535\u538b\u964d\uff08\u8d1f\u8f7d\u7535\u6d41\u548c\u8ff9\u7ebf\/\u5e73\u9762\u6b63\u65b9\u5f62\u6570\u76ee\u7684\u4e58\u79ef\uff09\uff0c\u2173\uff09\u7535\u6e90\u548cGND\u7535\u6d41\u8def\u5f84\uff0c\u4ee5\u53ca v\uff09\u6210\u672c\uff08PCB\u5c42\u6570\uff0c\u7ec4\u4ef6\uff09\uff0c\u2175\uff09\u6570\u5b57\u6216\u6a21\u62df\u4fe1\u53f7\u7684\u9891\u7387\uff0c\u4ee5\u53ca\u4ece\u7535\u6e90\u76f4\u63a5\u8fd4\u56de\u8def\u5f84\u7684\u53ef\u884c\u6027\u3002<\/p>\n

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\n\t\u3000\u3000\"\u7535\u8def\u63a5\u5730\u4e0e\u4f9b\u7535\u6a21\u5757\u539f\u7406\u89e3\u6790\"<\/p>\n

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\n\t\u3000\u3000\u56fe3\u4e2d\u7684\u6bcf\u4e2a\u7535\u6e90\u90fd\u88ab\u989c\u8272\u7f16\u7801\u4ee5\u4fbf\u533a\u5206\uff0c\u56fe\u4e2d\u6700\u91cd\u8981\u7684\u90e8\u5206\u662f\u5f69\u8272\u6807\u8bc6\u7684GND\u8fd4\u56de\u7535\u6d41\u3002\u56e0\u4e3a\u591a\u4e2a\u7535\u6e90\u662f\u4e32\u8054\u7684\uff0c\u5bfc\u81f4\u6bcf\u4e2a\u6700\u7ec8\u8d1f\u8f7d\u548cGND\u7535\u6d41\u88ab\u8feb\u4ee5\u5b83\u4eec\u88ab\u52a0\u7535\u65f6\u76f8\u540c\u7684\u987a\u5e8f\u53bb\u5b8c\u6210\u8fd4\u56de\u8def\u5f84\u3002\u4f8b\u5982\uff0c\u7535\u6c60\u4e3aBUCK1.2V\u8c03\u8282\u5668\u52a0\u7535\uff0c\u8be5\u8c03\u8282\u5668\u4e3a\u5fae\u5904\u7406\u5668\u4f9b\u7535\u3002\u56e0\u6b64\uff0c\u6d41\u7ecf\u5fae\u5904\u7406\u5668\u7684\u7535\u6d41\u5728\u8fd4\u56de\u5230\u7535\u6c60\u4e4b\u524d\uff0c\u5c06\u76f4\u63a5\u8fd4\u56de\u5230BUCK1.2V\u8c03\u8282\u5668\u5668GND\u7aef\u3002\u5982\u679c\u672a\u80fd\u9884\u89c1\u5230\u5168\u90e8\u7684\u7535\u6d41\u56de\u8def\u548c\u7535\u6d41\u8def\u5f84\u5b8c\u6210\u7684\u6b21\u5e8f\uff0c\u5c31\u53ef\u80fd\u5bfc\u81f4\u7535\u8def\u8fd0\u884c\u4e0d\u7a33\u5b9a\uff0c\u6216\u8005\u6ca1\u6709\u8db3\u591f\u7684 GND\u7535\u6d41\u8fd4\u56de\uff0c\u539f\u56e0\u662f\u8fd9\u4e9b\u95ee\u9898\u6ca1\u6709\u5728\u7535\u8def\u5e03\u5c40\u4e2d\u9002\u5f53\u5730\u8003\u8651\u5230\u5e76\u52a0\u4ee5\u63a7\u5236\u3002<\/p>\n

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