{"id":22281,"date":"2022-01-03T10:26:58","date_gmt":"2022-01-03T02:26:58","guid":{"rendered":"https:\/\/www.paiqinano.com\/?p=22281"},"modified":"2021-12-29T16:02:50","modified_gmt":"2021-12-29T08:02:50","slug":"pcb-stack%e6%80%8e%e4%b9%88%e8%ae%be%e8%ae%a1%e9%98%bb%e6%8a%97%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.paiqinano.com\/?p=22281","title":{"rendered":"PCB stack\u600e\u4e48\u8bbe\u8ba1\u963b\u6297\uff1f"},"content":{"rendered":"<p>\u5728\u5feb\u901f<u>\u6570\u5b57\u7535\u8def\u8bbe\u8ba1<\/u>\u8bbe\u8ba1\u6d41\u7a0b\u4e2d\uff0c\u7b2c\u4e00\u6b65\u5fc5\u987b\u505a\u7684\u662f\u4f9d\u636e\u64cd\u4f5c\u7cfb\u7edf\u7684\u590d\u6742\u6027\uff0c\u6210\u672c\u8d39\u8981\u7d20\u7b49\u6709\u5173\u5c42\u9762\u51b3\u7b56<u>pcb\u7535\u8def\u677f<\/u>\uff08<u>PCB<\/u>\uff09\u7684\u5c42\u53e0\u6784\u9020\uff08Stack\uff09\uff0c\u800c\u5728PCB stack\u8bbe\u8ba1\u65b9\u6848\u7684\u73af\u8282\u4e2d\uff0c\u7279\u70b9<u>\u7279\u6027\u963b\u6297<\/u>\u4e5f\u662f\u4e00\u4e2a\u91cd\u70b9\u5173\u6ce8\u7684\u95ee\u9898\u3002<\/p>\n<h2>1 \u5c42\u53e0\u6784\u9020\u7684\u6311\u9009<\/h2>\n<p>\u7ebf\u8def\u677f\u7684\u5c42\u53e0\u6784\u9020\u5206\u62102\u5c42\uff0c4\u5c42\uff0c6\u5c42\uff0c8\u5c42\uff0c10\u5c42\u8fd9\u4e9b\u3002\u73b0\u9636\u6bb5\u8f83\u5e38\u7528\u7684\u7528\u4ee5\u7535\u8111\u4e3b\u677f\u8bbe\u8ba1\u65b9\u6848\u7684\u5173\u952e\u67094\u5c42\u4e0e6\u5c42\uff0c\u5bf9\u4e8e8\u5c42\u3002\u800c\u9488\u5bf9\u66f4\u52a0\u7e41\u6742\u7684\u7cfb\u7edf\u8f6f\u4ef6\uff0c\u50cf\u5c0f\u8303\u56f4\u7684<u>Ad<\/u>d-in Card\uff0c\u5927\u4e2d\u578b\u901a\u8baf\u8bbe\u5907\u4e2d\u7684\u67d0\u4e00\u63a7\u5236\u6a21\u5757\uff0c\u50cfSDH\uff0cMul<u>ti<\/u>-serve Rou<u>te<\/u>r\uff0c\u8fd9\u79cd\u673a\u5668\u8bbe\u5907\u5e38\u89c112\u5c42\u4e43\u81f3\u662f\u66f4\u53cc\u5c42\u3002\u6587\u4e2d\u5173\u952e\u7684\u7acb\u8db3\u70b9\u4fbf\u662f\u4ee5\u6bd4\u8f83\u7b80\u5355\u7684\u4e8b\u4f8b\uff0c\u8be6\u7ec6\u4ecb\u7ecdPCB\u5c42\u53e0\u8bbe\u8ba1\u65b9\u6848\u4e2d\u7684\u4e3b\u8981\u53c2\u6570\u95ee\u9898\u3002<\/p>\n<p>1.1 4\u5c42\u7ebf\u8def\u677f<\/p>\n<p>\u9488\u5bf94\u5c42\u7ebf\u8def\u677f\uff0c\u8fd9\u4e5f\u662f\u9500\u552e\u5e02\u573a\u4e0a\u6700\u5e38\u89c1\u7684\u4e00\u79cd\u5c42\u53e0\u6784\u9020\uff0c\u5b83\u7684\u6784\u9020\u65e0\u5916\u4e4e\u4e0b\u8fb9\u51e0\u7c7b\u8ba1\u5212\u65b9\u6848\uff0c\u5982\u4e0b\u56fe1\uff0c\u5b9e\u9645\u5728\u4e8e\u54ea\u4e00\u79cd\u8ba1\u5212\u65b9\u6848\u6700\u597d\u662f\uff0c\u4e3b\u8981\u662f\u770b<u>\u8d70\u7ebf<\/u>\u65b9\u9762\u7684\u6311\u9009\uff0c\u53c2\u7167\u5e73\u9762\u56fe\u7684\u9009\u53d6\u53ca\u5176<u>EMC<\/u>\/EMI\u7684\u8003\u8651\u5230\u3002\u8fd9\u513f\u628asignal\u5c42\u653e\u5230\u91cc\u5c42\u6709\u76ca\u4e8e\u5c4f\u853d\u6389\u8f90\u5c04\u6e90\uff0c\u6709\u5229\u4e8eEMC\u7684\u8bbe\u8ba1\u65b9\u6848\uff0c\u4f46\u5f71\u54cd\u7cfb\u7edf\u8f6f\u4ef6\u7684Debug\u3002\u5e38\u89c1\u7684\u9884\u6848\u662f04A\u3002<\/p>\n<p align=\"center\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/2021\/12\/20211215132655-61b9ed1f9b783.png\" alt=\"\" \/><\/p>\n<p>\u6700\u5e38\u89c1\u7684\u5c42\u53e0\u6784\u9020\u4e3b\u8981\u662f06A\uff0c06G\uff0c06K\u300206A\u6709\u56db\u5c42\u8d70\u7ebf\u5c42\uff0c\u6709\u5229\u4e8e\u8d70\u7ebf\u300206G\u6709\u4e24\u4e2aGND\uff0c\u90a3\u6837\u7684\u8bddTop\u4e0eBottom\u5c42\u53c2\u7167\u5e73\u9762\u56fe\u5168\u662fGND\uff0c\u662f\u4e00\u79cd\u6709\u6548\u7684\u6311\u9009\u3002\u9488\u5bf906K\uff0c\u90a3\u6837\u505a\uff0c\u4e3b\u8981\u662f3\u4e2a\u6570\u636e\u4fe1\u53f7\u5c42\u8d70\u7ebf\u6709\u70b9\u513f\u7126\u8651\u4e0d\u5b89\uff0c\u8ba9\u7b2c\u56db\u5c42\u505a\u4e3a\u9884\u7559\u7684\u6570\u636e\u4fe1\u53f7\u5c42\uff0c\u6700\u7ec8\u65e0\u9700\u7684\u5730\u533a\u90fd\u94fa\u5e73\u94dc\u6cca\uff0c\u5373\u51c6\u786e\u7684\u8bf4\uff0c\u8fd9\u79cd\u5c42\u53e0\u6784\u9020\u7684layer4\u662fsignal\/GND\u3002\u9488\u5bf9\u5176\u4f59\u7684\u5c42\u53e0\u6784\u9020\uff0c\u50cf10\u5c42\uff0c18\u5c42\uff0c\u8fd9\u513f\u5f88\u5c11\u8be6\u7ec6\u4ecb\u7ecd\uff0c\u4e0b\u9762\u7684\u56fe\u4fbf\u4e8e\u53c2\u7167\u3002<\/p>\n<p align=\"center\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/2021\/12\/20211215132655-61b9ed1fc0b71.png\" alt=\"\" \/><\/p>\n<h2>2 \u7279\u70b9\u7279\u6027\u963b\u6297\u7684\u6d4b\u7b97<\/h2>\n<p>\u8bbe\u8ba1\u65b9\u6848\u5b8c\u5c42\u53e0\u6784\u9020\uff0c\u5b9e\u9645\u7684\u5c31\u9700\u8981\u8bbe\u8ba1\u65b9\u6848\u6bcf\u4e2a\u5c42\u53e0\u7684\u8584\u539a\u4e86\uff0c\u8fd9\u513f\u5173\u952e\u7684\u7a81\u7834\u53e3\u4fbf\u662f\u7279\u70b9\u7279\u6027\u963b\u6297\uff0c\u5f00\u5173\u7535\u6e90\u5e73\u9762\u56fe\u548c\u5730\u5e73\u9762\u56fe\u7684\u603b\u4f53\u76ee\u6807\u7279\u6027\u963b\u6297\u4e86\u3002<\/p>\n<p>\u5bf9\u7279\u70b9\u7279\u6027\u963b\u6297\u7684\u4e86\u89e3\u53ef\u4ee5\u7c7b\u4f3c\u5851\u6599\u6c34\u7ba1\uff0c\u7279\u70b9\u7279\u6027\u963b\u6297\u76f8\u8fd1\u5851\u6599\u6c34\u7ba1\u5bf9\u6d41\u6c34\u7684\u6469\u64e6\u963b\u529b\uff0c<u>\u7535\u6d41\u91cf<\/u>\u7c7b\u4f3c\u6d41\u6c34\uff0c\u5e03\u7ebf\u4e0e\u53c2\u7167\u5e73\u9762\u56fe\u7684\u95f4\u8ddd\u7c7b\u4f3c\u5851\u6599\u6c34\u7ba1\u4e0e\u5730\u5e73\u9762\u56fe\u7684\u95f4\u8ddd\u2014\u2014\u53ef\u60f3\u50cf\u4e3a\u53cd\u6620\u5728\u6c14\u4f53\u538b\u5f3a\u5c42\u9762\u3002<\/p>\n<p>2.1 \u5371\u5bb3\u7279\u70b9\u7279\u6027\u963b\u6297\u8981\u7d20<\/p>\n<p>\u5371\u5bb3\u7279\u70b9\u7279\u6027\u963b\u6297\u7684\u539f\u56e0\u8bb8\u591a\uff0c\u5173\u952e\u53cd\u6620\u5728\u4e0b\u9762\u597d\u591a\u4e2a\u5c42\u9762\uff1a<\/p>\n<p>\u4ecb\u7535\u8d28\u53c2\u91cf\uff0c\u4e0e\u7279\u6027\u963b\u6297\u503c\u53cd\u6bd4 \uff3bEr\u503c\u6108\u9ad8 \uff0c Z0\u503c\u6108\u4f4e\uff3d<\/p>\n<p><u>\u8def\u7ebf\u5c42<\/u>\u4e0e\u63a5\u5730\u8d28\u6784\u9020\u95f4\u4ecb\u7535\u5c42\u8584\u539a\uff0c\u4e0e\u7279\u6027\u963b\u6297\u503c\u6b63\u76f8\u5173\uff0c\u53c2\u7167\u57fa\u6750\u53caPP\u4e4b\u538b\u5408\u8584\u539a\uff0c\uff3b\u4ecb\u5c42\u6108\u539a \uff0c Z0\u503c\u6108\u9ad8\uff3d\uff0c\u4ecb\u7535\u5c42\u8584\u539a\u5bf9\u6bd4\u4e8e\u5851\u6599\u6c34\u7ba1\u79bb\u5730\u5e73\u9762\u56fe\u7684\u76f8\u5bf9\u9ad8\u5ea6\uff0c\u4ecb\u7535\u5c42\u8584\u539a\u8d8a\u5927\uff0c\u8868\u660e\u79bb\u5730\u5e73\u9762\u56fe\u8d8a\u9ad8\uff0c\u8fdb\u800c\u9020\u6210\u6d41\u6c34\u51cf\u6162\uff0c\u5982\u540c\u5851\u6599\u6c34\u7ba1\u5bf9\u6c34\u7684\u6469\u64e6\u963b\u529b\u589e\u52a0\uff0c\u8fdb\u800c\u7279\u70b9\u7279\u6027\u963b\u6297\u589e\u52a0\u3002<\/p>\n<p>\u7ebf\u8ddd\uff0c\u4e0e\u7279\u6027\u963b\u6297\u53cd\u6bd4 \uff3b\u7ebf\u8ddd\u6108\u7ec6 \uff0c Z0\u503c\u6108\u9ad8\uff3d\uff0c\u7ebf\u8ddd\u8d8a\u7ec6\uff0c\u8868\u660e\u5851\u6599\u6c34\u7ba1\u622a\u9762\u7f29\u5c0f\uff0c\u5bf9\u6d41\u6c34\u7684\u6469\u64e6\u963b\u529b\u589e\u52a0\uff0c\u8fdb\u800c\u6c34\u5229\u5de5\u7a0b\u7f29\u5c0f\uff0c\u7279\u70b9\u7279\u6027\u963b\u6297\u589e\u52a0\u3002<\/p>\n<p>\u94dc\u539a\uff0c\u4e0e\u7279\u6027\u963b\u6297\u503c\u53cd\u6bd4 \uff3b\u94dc\u6108\u539a \uff0c Z0\u503c\u6108\u4f4e\uff3d\uff0c\u94dc\u539a\u7f29\u5c0f\uff0c\u8868\u660e\u5851\u6599\u6c34\u7ba1\u622a\u9762\u7f29\u5c0f\uff0c\u5bf9\u6d41\u6c34\u7684\u6469\u64e6\u963b\u529b\u589e\u52a0\uff0c\u8fdb\u800c\u6c34\u5229\u5de5\u7a0b\u7f29\u5c0f\uff0c\u7279\u70b9\u7279\u6027\u963b\u6297\u589e\u52a0\u3002<\/p>\n<p>=\u300b\u4e00\u822c\u6765\u8bf4\uff0c\u91cc\u5c42\u4e3a\u57fa\u6750\u94dc\u539a\uff0c\u5382\u51851OZ=1.2 mil~1.4mil\uff0c\u8868\u5c42\u4e3a\u57fa\u6750\u94dc\u6cca\u8584\u539a \u7535\u9540\u94dc\u8584\u539a<\/p>\n<p>\u5dee\u52a8\u4fdd\u62a4\u7279\u6027\u963b\u6297\u90bb\u8fd1\u8def\u7ebf\u4e0e\u8def\u7ebf\u4e2d\u95f4\u7684\u95f4\u9694\uff0c\u4e0e\u7279\u6027\u963b\u6297\u503c\u6b63\u76f8\u5173 \uff3bSpacing\u8d8a\u5c0f \uff0c Z0\u503c\u6108\u4f4e\uff3d\uff0c\u8fd9\u4e00\u975e\u5e38\u597d\u4e86\u89e3\uff0c\u95f4\u9694\u7f29\u5c0f\uff0c\u8868\u660e<u>\u85d5\u5408<\/u>\u8d8a\u597d\uff0c\u8fdb\u800c\u5851\u6599\u6c34\u7ba1\u5bf9\u6d41\u6c34\u7684\u6469\u64e6\u963b\u529b\u8d8a\u5c0f\uff0c\u7279\u70b9\u7279\u6027\u963b\u6297\u7f29\u5c0f\u3002<\/p>\n<p>\u8def\u7ebf\u5c42\u4e0e\u8def\u7ebf\u56fa\u5c42\u4ecb\u7535\u5c42\u8584\u539a\uff0c\u4e0e\u7279\u6027\u963b\u6297\u503c\u53cd\u6bd4\u3002<\/p>\n<p>\u9632\u710a\u6f06\u8584\u539a\uff0c\u4e0e\u7279\u6027\u963b\u6297\u503c\u53cd\u6bd4\uff3b\u7eff\u6f06\u6108\u539a \uff0c Z0\u503c\u6108\u4f4e\uff3d\uff0c\u7eff\u6f06\u53ef\u4ee5\u5bf9\u6bd4\u4e8e\u6cb3\u5824\u5bf9\u6d41\u6c34\u7684\u4fdd\u969c\u529f\u6548\uff0c\u7eff\u6f06\u8d8a\u539a\uff0c\u6cb3\u5824\u8d8a\u539a\uff0c\u8868\u660e\u5bf9\u6d41\u6c34\u7684\u4fdd\u969c\u529f\u6548\u8d8a\u597d\uff0c\u6d41\u6c34\u90fd\u4e0d\u6613\u9057\u5931\uff0c\u8fdb\u800c\u6d41\u6c34\u8d8a\u5927\uff0c\u5bf9\u6d41\u6c34\u7684\u963b\u62e6\u8d8a\u5c0f\uff0c\u7279\u70b9\u7279\u6027\u963b\u6297\u8d8a\u4f4e\u3002<\/p>\n<p>2.2 Microstrip\u5355\u7aef\u7279\u6027\u963b\u6297\u5b9e\u4f53\u6a21\u578b<\/p>\n<p>\u4e0b\u9762\u7684\u56fe\u662f\u8868\u660e\u5fae\u5e26\u7ebf\uff08Microstrip\uff09\u7684\u5355\u7aef<u>\u7279\u6027\u963b\u6297\u6d4b\u7b97<\/u>\u65b9\u5f0f\uff1a<\/p>\n<p align=\"center\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/2021\/12\/20211215132656-61b9ed2001308.png\" alt=\"\" \/><\/p>\n<p>Su<u>rf<\/u>ace Microstrip<\/p>\n<p>2.3 Microstrip\u5dee\u5206\u4fe1\u53f7\u7279\u6027\u963b\u6297\u5b9e\u4f53\u6a21\u578b<\/p>\n<p>\u4e0b\u9762\u7684\u56fe\u8868\u660e\u5fae\u5e26\u7ebf\u7684\u5dee\u5206\u4fe1\u53f7\u7279\u6027\u963b\u6297\u8ba1\u7b97\u65b9\u5f0f\uff1a\uff08\u5e26\u72b6\u7ebf\u8ba1\u7b97\u65b9\u5f0f\u540e\u8fb9\u7ae0\u8282\u76ee\u5f55\u4f1a\u8be6\u7ec6\u4ecb\u7ecd\uff09<\/p>\n<p>Edge-coupled Surface Microstrip<\/p>\n<p align=\"center\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/2021\/12\/20211215132656-61b9ed2029b68.png\" alt=\"\" \/><\/p>\n<p>\u8868\u660e\uff1a<\/p>\n<p>\u6709\u5173\u94dc\u539aT \uff1a\u91cc\u5c42\uff0c1 oz=1.2mil~1.4mil\u4e0a\u4e0b\uff0c\u5fc5\u987b\u5411PCB\u7248\u5382\u786e\u5b9a\uff0c\u4e00\u822c\u53d6\u540d\u4e3a1.4mil\u3002\u8868\u5c42\uff0c\u8584\u539a\u5e94\u5f53\u4e3a\u57fa\u94dc\u7684\u8584\u539a \u6d82\u5c42\u8584\u539a<\/p>\n<p>\u6709\u5173\u7ebf\u8ddd\uff1a\u91cc\u5c420.5oz\u4e0a\u5e45=\u4e0b\u5e45\u20130.5mil \uff0c 1oz \/ \u7ecf\u7535\u9540\u5de5\u827a\u4e0a\u5e45=\u4e0b\u5e45 \u2013 0.8mil\u3002\u8868\u5c42\uff0c\u4e0a\u5e45=\u4e0b\u5e45 *\uff0885-90%\uff09<\/p>\n<p>\u9632\u710a\u5c42\u8584\u539a\uff1a\u4e00\u822c\u6700\u5c11\u662f0.4mil\u3002\u5355\u7aef\u7279\u6027\u963b\u6297\uff1a\u9632\u710a\u524d\u540e\u5de6\u53f3\u7ea6\u5dee7 ohms\uff0c \u6807\u8bc6\u6700\u4f4e\u503c 4mil \u9650\u5236 2mil\u3002\u9488\u5bf9\u5dee\u52a8\u4fdd\u62a4\u7279\u6027\u963b\u6297\uff1a\u9632\u710a\u524d\u540e\u5de6\u53f3\u7ea6\u5dee14 ohms\uff0c \u6807\u8bc6\u6700\u4f4e\u503c 10mil \u9650\u5236 4mil\u3002<\/p>\n<p>\u4e00\u822c\u7684PP\u578b\u53f7\u89c4\u683c\u4e0e\u8584\u539a\u662f\uff08\u4ec5\u4f5c\u53c2\u8003\uff09\uff1a\u578b\u53f7\u89c4\u683c&#8212;resin to glass ratio&#8212;\u8584\u539a<\/p>\n<p align=\"center\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/2021\/12\/20211215132656-61b9ed20515cc.png\" alt=\"\" \/><\/p>\n<p>\u9488\u5bf9Pre-Preg\u5f3a\u70c8\u63a8\u8350\u5e94\u75282116\uff0cCore\u63a8\u8350\u5e94\u75287628\uff0c\u8fd9\u4e5f\u662f\u4f9d\u636elql-008\uff08\u672c\u4eba\u8bc6\u522b\u7801\uff09\u6709\u5173Stackup\u53d9\u8ff0\u800c\u6210\u7684\uff0c<u>\u9605\u8bfb\u8005<\/u>\u53ef\u53c2\u8003\u8be5\u7bc7\u6587\u672c\u6587\u6863\u6709\u5173PCB\u7684\u5173\u952e\u70b9\u3002<\/p>\n<p>2.4 Strip\u5355\u7aef\u7279\u6027\u963b\u6297\u5b9e\u4f53\u6a21\u578b<\/p>\n<p>\u8fd9\u4e00\u5b9e\u4f53\u6a21\u578b\u53ef\u53c2\u8003\u56fe12\u3002<\/p>\n<p>2.5 Strip 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