{"id":901,"date":"2025-10-02T20:12:01","date_gmt":"2025-10-02T12:12:01","guid":{"rendered":"https:\/\/ciscohe.cc\/blog\/?p=901"},"modified":"2025-10-16T20:47:22","modified_gmt":"2025-10-16T12:47:22","slug":"design-a-synchronous-buck-converter-with-stm32g4","status":"publish","type":"post","link":"https:\/\/ciscohe.cc\/blog\/design-a-synchronous-buck-converter-with-stm32g4\/","title":{"rendered":"Design a synchronous buck converter with STM32G4"},"content":{"rendered":"\n<p>\u597d\u4e45\u6ca1\u5199\u6587\u7ae0\uff0c\u4e4b\u524d\u53d1\u8fc7\u4e00\u7bc7\u300aDesign a synchronous buck converter with Raspberry Pi Pico\u300b\uff0c\u4f46\u662f\u8bc1\u660ePico\u662f\u505a\u4e0d\u5230\u540c\u6b65\u6574\u6d41buck\u53d8\u6362\u5668\u7684\u3002\u539f\u56e0\u662f\uff1a\u6211\u5728\u903b\u8f91\u4eea\u67e5\u770bPico\u8f93\u51fa\u7684PWM\u7684\u65f6\u5019\uff0c\u53d1\u73b0\u5b83\u5728PWM\u542f\u52a8\u524d\u6216\u8005\u6539\u53d8PWM\u9891\u7387\u4e4b\u65f6\uff0c\u53cc\u901a\u9053\u4f1a\u6709100ns-200ns\u7684\u65f6\u95f4\u53ef\u80fd\u8f93\u51fa\u9ad8\u7535\u5e73\u3002\u51b5\u4e14\uff0c\u5728\u7f51\u4e0a\u627ePico PWM\u7684library\u5e93\uff0c\u53d1\u73b0\u5176\u4ed6\u4f5c\u8005\u4e5f\u53ea\u662f\u5c01\u88c5Pico\u7684\u5b98\u65b9SDK\u5e93\uff0c\u6ca1\u6709\u76f4\u63a5\u8fdb\u884c\u5bc4\u5b58\u5668\u64cd\u4f5c\uff0c\u56e0\u6b64\u9020\u6210\u4e86\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u53cc\u901a\u9053\u540c\u65f6\u8f93\u51fa\u9ad8\u7535\u5e73\u7ed9\u540c\u6b65\u6574\u6d41buck\u53ef\u80fd\u4f1a\u5bfc\u81f4\u4e0a\u4e0bMOS\u7ba1\u90fd\u5bfc\u901a\uff0c\u90a3\u4e0d\u5c31\u662f\u76f4\u63a5\u77ed\u8def\u70b8\u673a\u4e86\u3002\u5c3d\u7ba1\u53ea\u662f\u6301\u7eed100ns-200ns\u65f6\u95f4\uff0c\u4f46\u662f\u4f5c\u4e3a\u5165\u95e8\u5de5\u7a0b\u5e08\uff0c\u5e94\u8be5\u79c9\u6301\u7231\u62a4\u81ea\u5df1\u751f\u547d\u7684\u539f\u5219\uff0c\u5e94\u8be5\u4f7f\u7528\u5176\u4ed6\u66f4\u4e13\u4e1a\u63d0\u4f9b\u66f4\u7cbe\u51c6\u5b9a\u65f6\u5668\u7684MCU\uff0c\u4fdd\u8bc1\u8f93\u51fa\u7684\u53ccPWM\u4fe1\u53f7\u603b\u662f\u4e92\u8865\u548c\u6709\u6b7b\u533a\u65f6\u95f4\u3002\u5982\u679c\u786c\u662f\u8981\u4f7f\u7528Pico\u4f5c\u4e3a\u9a71\u52a8\u903b\u8f91\uff0c\u90a3\u5728MOSFET\u7684\u9a71\u52a8IC\u9009\u578b\u4e5f\u9700\u8981\u9009\u7528\u4e0d\u4f1a\u540c\u65f6\u8f93\u5165PWM\u9ad8\u7535\u5e73\uff0c\u8f93\u51fa\u4e0a\u3001\u4e0bMOS\u7ba1\u4e5f\u4e0d\u4f1a\u540c\u65f6\u5bfc\u901a\uff0c\u5177\u6709\u76f8\u4e92\u95ed\u9501\u529f\u80fd\u7684\u3002\u4f46\u8fd9\u5927\u5927\u589e\u52a0\u4e86\u65e2\u8981\u53c8\u8981\u7684\u9009\u578b\u56f0\u96be\u3002\u54ea\u6709\u9a71\u52a8IC\u53ef\u4ee5\u63d0\u4f9b\u90a3\u4e48\u591a\u5b89\u5168\u53c8\u53ef\u9760\u53c8\u597d\u7528\u53c8\u9a71\u52a8\u7535\u6d41\u5f3a\u53c8\u4fbf\u5b9c\u7684\uff08\u4e09\u8272\u56fe\u7b54\u6848\uff1a\u6eda\uff09\u3002<\/li>\n\n\n\n<li>\u597d\u50cf\u6ca1\u89c1\u5230\u5bc4\u5b58\u5668\u8f93\u51fa\u4e92\u8865PWM\u7684\uff0c\u4f3c\u4e4e\u90fd\u662f\u7528\u5b98\u65b9SDK\u7684API\uff0c\u91cd\u65b0\u6253\u5305\u6765\u5b9e\u73b0\u8f6f\u4e92\u8865PWM\u3002\u90a3\u7a0b\u5e8f\u7684\u8fd0\u884c\u901f\u5ea6\u592a\u6162\u4e86\uff0c\u5982\u679c\u505avoltage-mode control\u7535\u538b\u73af\u63a7\u5236\uff0c\u8fd8\u8981\u9010\u5468\u671f\u4e2d\u65ad\uff0c\u90a3\u5927\u6982\u6765\u4e0d\u53ca\u3002<\/li>\n\n\n\n<li>\u6211\u5728\u7f51\u4e0a\u6ca1\u89c1\u5230\u7528Pico\u5199PWM\u5bc4\u5b58\u5668\u64cd\u4f5c\u7684\u624b\u628a\u624b\u6559\u7a0b\uff0c\u8eba\u5e73\u4e86\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u7efc\u4e0a\uff0c\u6211\u8fd9\u8fc7\u53bb\u4e09\u4e2a\u6708\u8f6c\u884c\u5b66\u4e60STM32\uff08\u5b66\u4e86\u4e00\u4e9b\u76ae\u6bdb\uff09\uff0c\u518d\u52a0\u4e0a\u7f51\u4e0aB\u7ad9\u7684\u4f6c\u53cb\u76f8\u52a9\uff0c\u7ec8\u4e8e\u505a\u51fa\u4e86\u57fa\u4e8eSTM32\u7684\u540c\u6b65\u6574\u6d41buck\u53d8\u6362\u5668\uff0c\u5176\u4e2d\uff0c\u5b9e\u73b0\u4e86\u4ee5\u4e0b\u63a7\u5236\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u7535\u538b\u73af (Voltage-mode control aka. VMC)\uff0c\u57fa\u7840\u7684\u7535\u538b\u73af\u63a7\u5236\uff0c\u8f93\u51fa\u6052\u538b\u3002<\/li>\n\n\n\n<li>\u7535\u6d41\u73af\uff08Current-mode control aka. CMC\uff09\uff0c\u7535\u6d41\u73af\u63a7\u5236\uff0c\u8f93\u51fa\u6052\u6d41\u3002<\/li>\n\n\n\n<li>\u5e73\u5747\u7535\u6d41\u73af\uff08\u6216\u8005\u53cc\u95ed\u73af(\u6211\u7684\u7406\u89e3)\uff0cAverage Current Mode Control aka. ACMC\uff09\uff0c\u5185\u73af\u662f\u7535\u6d41\u73af\uff0c\u5916\u73af\u662f\u7535\u538b\u73af\uff0c\u8f93\u51fa\u6052\u538b\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u4ee5\u4e0a\u7684\u7535\u538b\u73af\u548c\u7535\u6d41\u73af\u90fd\u8981\u611f\u8c22<a href=\"https:\/\/www.bilibili.com\/video\/BV1vZgazFERM\/?spm_id_from=333.1387.collection.video_card.click\">B\u7ad9\u6797\u4f6c\u53cb<\/a>\u7684\u76f8\u52a9\uff0c\u8ba9\u6211\u7ec8\u4e8e\u77e5\u9053\u5982\u4f55\u5165\u95e8\u6570\u5b57\u7535\u6e90\u63a7\u5236\u548c\u8bbe\u8ba1\u8865\u507f\u5668\uff0c\u5b9e\u73b0\u4e86\u4eba\u751f\u7b2c\u4e00\u5757\u964d\u538bbuck\u53d8\u6362\u5668\uff08\u5176\u5b9e\u8fd8\u662f\u4fe1\u606f\u5dee\uff0c\u4e92\u8054\u7f51\u57fa\u672c\u6ca1\u6709\u50cf\u8fd9\u4f4dB\u7ad9\u4f6c\u53cb\u65e0\u79c1\u5206\u4eab\u4e86\u5168\u5957\u8bbe\u8ba1\u6d41\u7a0b\uff0c\u6211\u5b9e\u5c5e\u611f\u52a8\u6d95\u96f6\uff09\u3002ACMC\u5219\u662f\u5f7b\u591c\u5728\u7f51\u4e0a\u627e\u8bba\u6587\uff0c\u5927\u6982\u4e86\u89e3\u4e86\u8bbe\u8ba1\u6d41\u7a0b\uff0c\u800c\u540e\u4e0d\u77e5\u75b2\u60eb\u8be2\u95eeAI\uff0c\u6700\u7ec8\u832b\u832b\u5927\u6d77\u83b7\u5f97\u4e00\u4e1d\u5934\u7eea\uff0c\u76f4\u5230\u4eca\u65e5\u7684\u66d9\u5149\uff08\u54ed\uff09\u3002<\/p>\n\n\n\n<p>\u57fa\u4e8e\u4e8e\u6b64\uff0c\u6211\u89c9\u5f97\u5e94\u8be5\u5c06\u81ea\u5df1\u5b66\u5230\u7684\uff0c\u8bb0\u5f55\u5728\u6b64\uff0c\u4e0d\u6b62\u91cd\u65b0\u52a0\u6df1\u6211\u5bf9\u8bbe\u8ba1\u53d8\u6362\u5668\u7684\u5370\u8c61\uff0c\u4e5f\u53ef\u4ee5\u8ba9\u6211\u5728\u7f16\u5199\u6559\u7a0b\u65f6\u53cd\u601d\u8fc7\u7a0b\u662f\u5426\u8fd8\u6709\u9057\u9519\u7ec6\u8282\uff0c\u4e5f\u53ef\u4ee5\u4e3a\u5728\u4e92\u8054\u7f51\u832b\u832b\u5927\u6d77\u82e6\u641c\u5bfb\u5230\u8fd9\u7bc7\u6587\u7ae0\u7684\u9053\u53cb\uff0c\u6216\u8bb8\u4e5f\u548c\u90a3\u65f6\u5019\u7684\u6211\u8ff7\u832b\u5931\u63aa\uff0c\u4f46\u613f\u8fd9\u7bc7\u6587\u7ae0\u7684\u8bb0\u8f7d\u5230\u65f6\u5019\u53ef\u4ee5\u5e2e\u5230\u4f60\u4eec\uff08\u6559\u7a0b\u4e0d\u4f1a\u5f88\u4e13\u4e1a\uff0c\u5982\u6709\u9519\u6f0f\u4e4b\u5904\uff0c\u4e5f\u8bf7\u8c05\u89e3\uff09\u3002<\/p>\n\n\n\n<p class=\"has-text-align-center\"><strong>A. \u8bbe\u8ba1\u6d41\u7a0b<\/strong><\/p>\n\n\n\n<p>\u5f00\u95e8\u89c1\u5c71\uff0c\u8bbe\u8ba1\u4e00\u4e2a\u6570\u5b57\u63a7\u5236\u7684buck\u53d8\u6362\u5668\u7684\u57fa\u7840\u6b65\u9aa4\u8981\u77e5\u9053\u5148\uff0c\u624d\u4e0d\u4f1a\u8ff7\u832b\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u901a\u8fc7\u5c0f\u4fe1\u53f7\u6a21\u578b\u5206\u6790 (small-signal modeling)\uff0c\u83b7\u5f97buck\u53d8\u6362\u5668\u7684\u4f20\u9012\u51fd\u6570\uff0c\u4f8b\u5982Gvd(s) = vo(s)\/d(s), Gid(s) = iL(s)\/d(s), \u548cGvi(s) =  vo(s)\/iL(s)\u3002\u7f51\u4e0a\u6559\u5bfc\u5c0f\u4fe1\u53f7\u6a21\u578b\u90fd\u5f88\u590d\u6742\u5f88\u9ad8\u5927\u4e0a\uff0c\u4ec0\u4e48DC\u53d8\u538b\u5668\u5efa\u6a21\uff0c\u5176\u5b9e\u5728\u6211\u8fd9\u91cc\u662f\u7701\u7565\u7684\uff08\u6211\u89c9\u5f97\u6ca1\u6709\u5fc5\u8981\u4e86\uff09\uff0c\u6211\u4eec\u7684\u76ee\u6807\u662f\u901a\u8fc7\u5c0f\u4fe1\u53f7\u627e\u5230buck\u7cfb\u7edf\u4f20\u9012\u51fd\u6570\uff0c\u57fa\u4e8e\u5b83\u4eec\u8bbe\u8ba1\u8865\u507f\u5668\uff0c\u8bbe\u8ba1\u8865\u507f\u5668\u624d\u662f<strong>\u91cd\u4e2d\u4e4b\u91cd<\/strong>\u3002\u6211\u5b66\u4e60\u7684\u505a\u6cd5\u662f\uff0c\u6211\u5148\u770b\u61c2\u4e86\u5c0f\u4fe1\u53f7\u5efa\u6a21\u7684\u6570\u5b66\u539f\u7406\uff0c\u5176\u5b9e\u5c31\u662f\u4e00\u4e2a\u7c7b\u4f3c\u4f4e\u901a\u6ee4\u6ce2\u5668\u7684\u4e1c\u897f\uff0c\u628a\u5f00\u5173\u9891\u7387\u6216\u8005\u500d\u6570\u4e8e\u5f00\u5173\u9891\u7387\u7684\u4fe1\u53f7\u90fd\u8870\u51cf\u6389\uff0c\u53ea\u7559\u4e0b\u4e86\u76f4\u6d41\u548c\u5f88\u4f4e\u9891\u5e45\u5ea6\u5f88\u5c0f\u7684\u4ea4\u6d41\u4fe1\u53f7\u3002\u800c\u540e\uff0c\u5c06\u8fd9\u6ee4\u6ce2\u540e\u7684\u4fe1\u53f7\u4e2d\u7684\u76f4\u6d41\u9879\u53bb\u9664\uff0c\u53ea\u4fdd\u7559\u5c0f\u4fe1\u53f7\uff08\u5c31\u662f\u90a3\u4e2a\u5e45\u5ea6\u5f88\u4f4e\u9891\u7387\u5f88\u6162\u7684\u4ea4\u6d41\u4fe1\u53f7\uff09\uff0c\u518d\u5c06\u516c\u5f0f\u8f6c\u6362\u5230\u9891\u57df(frequency domain, Laplace Transform)\uff0c\u518d\u516c\u5f0f\u5bf9\u8c03\u4e00\u4e0b\uff0c\u5c31\u53ef\u4ee5\u83b7\u5f97\u4f20\u9012\u51fd\u6570\u4e86\uff08\u4f60\u770b\uff0c\u8fd9\u91cc\u7701\u53bb\u4e86\u4ec0\u4e48DC\u53d8\u538b\u5668\u5efa\u6a21\uff0c\u53ea\u9700\u8981\u7528\u624b\u4e0a\u516c\u5f0f\u5c31\u80fd\u83b7\u5f97\u4f20\u9012\u51fd\u6570\uff0c\u800c\u4e0d\u662f\u624b\u4e0a\u7684\u516c\u5f0f&#8211;&gt;\u5efa\u6a21&#8211;&gt;\u624d\u80fd\u83b7\u53d6\u4f20\u9012\u51fd\u6570\uff0c\u8fd9\u6ca1\u5fc5\u8981\uff09\u3002\u81f3\u4e8e\u4e3a\u4ec0\u4e48\u8981\u7528\u5c0f\u4fe1\u53f7\uff0c\u79d1\u5b66\u5bb6\u4eec\u8bf4\u662f\u5bf9\u7684\uff0c\u90a3\u6211\u4eec\u662f\u5de5\u7a0b\u5e08\uff0c\u5c31\u4e0d\u6df1\u7a76\u5176\u4e2d\u7684\u6df1\u5c42\u95ee\u9898\u4e86\uff08\u4f8b\u5982\u4ed6\u4eec\u6240\u8bf4\u7684\u5de5\u4f5c\u5e73\u8861\u70b9\uff09\u3002\u4e0d\u8fc7\u5982\u679c\u53ef\u4ee5\u505a\u5230\u50cf\u7b14\u8005\u4e00\u6837\u4e5f\u6210\u529f\u624b\u6413\u4e00\u6b21buck\u5c0f\u4fe1\u53f7\u4f20\u9012\u51fd\u6570\uff0c\u800c\u4e0d\u662f\u7f51\u4e0a\u76f4\u63a5\u6284\u4e2a\u4f20\u9012\u51fd\u6570\u6765\u7528\uff0c\u4e5f\u5df2\u7ecf\u6253\u8d62\u4e86\u5f88\u591a\u5de5\u7a0b\u5e08\u4e86\u3002\u6211\u611f\u89c9\u80fd\u624b\u6413\u516c\u5f0f\u5bf9\u4ee5\u540e\u518d\u9020boost\u53d8\u6362\u5668\u6216\u8005buck-boost\u53d8\u6362\u5668\u90fd\u4f1a\u66f4\u6709\u4fe1\u5fc3\u548c\u52a8\u529b\u3002\u624b\u6413\u5c0f\u4fe1\u53f7\u7684\u65b9\u6cd5\uff0c\u6211\u8fdf\u70b9\u4f1a\u4e0a\u4f20\u7b14\u8bb0\u5230\u8fd9\u513f\u7ed9\u5927\u5bb6\u53c2\u8003\u4e0b\u3002\u5982\u679c\u4f60\u8bf4\uff1a\u54ce\uff0c\u6211\u4fe1\u4e0d\u8fc7\u7f51\u4e0a\u7684\u5c0f\u4fe1\u53f7\u4f20\u9012\u51fd\u6570\uff0c\u6015\u4e0d\u5bf9\uff0c\u53c8\u5b9e\u5728\u624b\u6413\u5931\u8d25\uff0c\u90a3\u4f60\u53ef\u4ee5\u7528PLECS\u4eff\u771f\u4f60\u7684buck\u7535\u8def\u6765\u83b7\u53d6bode\u54cd\u5e94\u56fe\uff0c\u7136\u540e\u7528MATLAB\u5e2e\u4f60\u8fa8\u8bc6\u548c\u8ba1\u7b97\u51fa\u4f20\u9012\u51fd\u6570\u51fa\u6765\uff0c\u6797\u4f6c\u7684\u6559\u5b66\u4fbf\u662f\u57fa\u4e8e\u6b64\u65b9\u6cd5\u83b7\u53d6\u4f20\u9012\u51fd\u6570\uff0c\u5927\u5bb6\u60f3\u76f4\u63a5\u9020\u6570\u5b57buck\uff0c\u52a0\u901fproject\u53ef\u4ee5\u770b\u4ed6\u7684<a href=\"https:\/\/www.bilibili.com\/video\/BV1Df8KzwEXS?spm_id_from=333.788.videopod.sections&amp;vd_source=1ffef6e1be8ac2641d39509f4c08a76c\">\u6559\u5b66<\/a>\uff0c\u6211\u5df2\u7ecf\u770b\u8fc7\uff0cPLECS\u63d0\u4f9b\u7684\u4f20\u9012\u51fd\u6570\u548c\u6211\u624b\u6413\u7684\u4f20\u9012\u51fd\u6570\u548c\u7f51\u4e0a\u8bba\u6587\u63d0\u4f9b\u7684\u4f20\u9012\u51fd\u6570\u5728\u76f8\u540c\u7535\u8def\u53c2\u6570\u4e0b<strong>\u51e0\u4e4e\u4e00\u6837<\/strong>\u3002\u603b\u7684\u6765\u8bf4\uff0c\u83b7\u53d6buck\u7684\u4f20\u9012\u51fd\u6570\u662f\u7b2c\u4e00\u6b65\uff0c\u5b83\u4eec\u57fa\u4e8e\u5c0f\u4fe1\u53f7\u5efa\u6a21\u800c\u5f97\u6765\uff0c\u83b7\u53d6\u7684\u65b9\u5f0f\u6709\u5982\u4e0b\uff1a\u624b\u6413\uff0c\u4e0a\u7f51\u6284\uff0c\u6216PLECS+MATLAB\u8fa8\u8bc6\u51fa\u6765\u3002<\/li>\n\n\n\n<li>\u8bbe\u8ba1\u8865\u507f\u5668\uff1a\u8bbe\u8ba1\u8865\u507f\u5668\u7684\u610f\u601d\u5c31\u662f\u5f3a\u5316buck\u7684\u8d1f\u53cd\u9988\u81ea\u63a7\u7cfb\u7edf\uff08\u8d1f\u53cd\u9988\u7cfb\u7edf\u672c\u8eab\u5c31\u4f1a\u5c1d\u8bd5\u8f93\u51fa\u548c\u671f\u671b\u503c\u4e00\u6837\u7684\u7ed3\u679c\uff0c<strong>\u51cf\u5c0f\u8bef\u5dee<\/strong>\uff0c\u4f46\u662f\u81ea\u8eab\u53ef\u80fd\u6709\u7a33\u5b9a\u6027\u4e0d\u8db3\u7b49\u7f3a\u9677\uff09\uff0c\u6539\u8fdbbuck\u81ea\u8eab\u7cfb\u7edf\u7684\u6027\u80fd\u548c\u7a33\u5b9a\u6027\u3002\u5728\u8fd9\u91cc\uff0c\u4f60\u53ef\u4ee5\u770b\u5230\uff0c\u5c0f\u4fe1\u53f7\u63a8\u5bfc\u5230\u7684\u4f20\u9012\u51fd\u6570\u5c31\u662f\u7528\u6570\u5b66\u6765\u63cf\u8ff0\u8fd9\u4e2a\u63a7\u5236\u7cfb\u7edf\u3002\u8fd9\u91cc\u9700\u8981\u4e00\u4e9b\u81ea\u52a8\u63a7\u5236\u539f\u7406\u7684\u77e5\u8bc6\uff0c\u4f8b\u5982\u6211\u534a\u5e74\u524d\u770b\u8fc7\u8fd9\u4e2a\u6559\u6388\u7684<a href=\"https:\/\/www.bilibili.com\/video\/BV1pi4y1d7jD\/?spm_id_from=333.337.search-card.all.click\">\u7f51\u8bfe<\/a>\uff0c\u53ef\u4ee5\u53c2\u8003\u4e00\u4e8c\u3002\u81ea\u52a8\u63a7\u5236\u539f\u7406\u5f88\u590d\u6742\uff0c\u6211\u5b66\u4e86\u540e\u4e5f\u6ca1\u6709\u611f\u89c9\u4f1a\u592a\u591a\uff0c\u5438\u6536\u6709\u9650\uff08\u786e\u5b9e\u96be\u554a\uff09\uff0c\u4f46\u662f\u8981\u8d77\u7801\u77e5\u9053\u9891\u57df\u7a33\u5b9a\u6027\u600e\u4e48\u770b\uff08\u6781\u70b9\u7684\u4f4d\u7f6e\uff09\uff0c\u76f8\u4f4d\u88d5\u91cf\uff0c\u5e26\u5bbd\uff0cdamping factor\u963b\u5c3c\u7b49\u5e38\u7528\u7684\u4e1c\u897f\uff0c\u4ed6\u4eec\u90fd\u662f\u8bbe\u8ba1\u8865\u507f\u5668\u7684\u65f6\u5019\u4f1a\u8003\u8651\u7684\u56e0\u7d20\u3002\u61c2\u4e86\u540e\u5c31\u76f4\u63a5\u5728bode\u56fe\u4e0a\u8bbe\u8ba1\u8865\u507f\u5668\uff0c\u5e38\u7528\u4f0e\u4fe9\u6709\uff1a\u4f4e\u9891\u7684\u589e\u76ca\u901a\u5e38\u662f-20dB\/decade\u7a7f\u8d8acutoff frequency\u622a\u6b62\u9891\u7387\uff0c\u800c\u540e\u9ad8\u9891\u6bb5\u8981-40dB\/decade\u8870\u51cf\uff0c\u76f8\u4f4d\u88d5\u5ea6&gt;60\u00b0\uff08\u6570\u5b57\u63a7\u5236\u8981\u5927\u4e00\u4e9b\uff09\u3002\u8bbe\u8ba1\u8865\u507f\u5668\u7684\u65b9\u6cd5\u53ef\u4ee5\u53c2\u8003\u6797\u4f6c\u7684MATLAB\u8bbe\u8ba1\u8865\u507f\u5668<a href=\"https:\/\/www.bilibili.com\/video\/BV1Df8KzwEXS?spm_id_from=333.788.videopod.sections&amp;vd_source=1ffef6e1be8ac2641d39509f4c08a76c\">\u6559\u5b66<\/a>\uff0c\u5e38\u7528\u7684\u8865\u507f\u5668\uff08aka pole-zero placement\uff09\u53ef\u4ee5\u662f2\u4e2a\u96f6\u70b9+3\u4e2a\u6781\u70b9\uff081\u4e2a\u6781\u70b9\u5728\u539f\u70b9\uff0c\u5373\u662f\u79ef\u5206\u5668\uff09\u3002<\/li>\n\n\n\n<li>\u8bbe\u8ba1\u597d\u8865\u507f\u5668\u540e\uff0c\u83b7\u5f97\u8865\u507f\u5668\u7684\u4f20\u9012\u51fd\u6570Gcom(s)\uff0c\u8f6c\u6210z-domain\uff0c\u4f7f\u7528MATLAB\u7684Tustin\u8f6c\u6362\u65b9\u6cd5\u5373\u53ef\uff0c\u83b7\u5f97Gcom(z)\u7684\u5dee\u5206\u65b9\u7a0b\uff0c\u73b0\u5728\u8fd9\u4e2a\u65b9\u7a0b\u53ef\u4ee5\u76f4\u63a5\u5199\u8fdbSTM32\u5355\u7247\u673a\u91cc\u8ba1\u7b97\uff0c\u81ea\u6b64buck\u53d8\u6362\u5668\u4fbf\u61c2\u5f97\u81ea\u6211\u826f\u597d\u7a33\u5b9a\u5730\u63a7\u5236\u4e86\u3002<\/li>\n<\/ol>\n\n\n\n<p class=\"has-text-align-center\"><strong>B. Methodology \u8bbe\u8ba1\u6b65\u9aa4<\/strong><\/p>\n\n\n\n<p><strong>Part 1: \u624b\u6413\u5c0f\u4fe1\u53f7<\/strong><\/p>\n\n\n\n<p>\u624b\u6413buck\u5c0f\u4fe1\u53f7\u6a21\u578b\u4e0e\u5bfb\u5f97\u4f20\u9012\u51fd\u6570\u4e4b\u624b\u7a3f\uff1a<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/ciscohe.cc\/blog\/wp-content\/uploads\/2025\/10\/2e6986523c1cae5373ec736691734fa5-scaled.png'><img class=\"lazyload lazyload-style-8\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1919\" height=\"2560\" data-original=\"https:\/\/ciscohe.cc\/blog\/wp-content\/uploads\/2025\/10\/2e6986523c1cae5373ec736691734fa5-scaled.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-911\" style=\"width:700px\"  sizes=\"auto, (max-width: 1919px) 100vw, 1919px\" \/><\/div><\/figure>\n<\/div>\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/ciscohe.cc\/blog\/wp-content\/uploads\/2025\/10\/727483ac68dfa8d292283cecb1d1093f-scaled.png'><img class=\"lazyload lazyload-style-8\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1919\" height=\"2560\" data-original=\"https:\/\/ciscohe.cc\/blog\/wp-content\/uploads\/2025\/10\/727483ac68dfa8d292283cecb1d1093f-scaled.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-912\" style=\"width:700px\"  sizes=\"auto, (max-width: 1919px) 100vw, 1919px\" \/><\/div><\/figure>\n<\/div>\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/ciscohe.cc\/blog\/wp-content\/uploads\/2025\/10\/0e4df8c8eba843e8a7d50c83ec223f02-scaled.png'><img class=\"lazyload lazyload-style-8\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1919\" height=\"2560\" data-original=\"https:\/\/ciscohe.cc\/blog\/wp-content\/uploads\/2025\/10\/0e4df8c8eba843e8a7d50c83ec223f02-scaled.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-907\" style=\"width:700px;height:auto\"  sizes=\"auto, (max-width: 1919px) 100vw, 1919px\" \/><\/div><figcaption class=\"wp-element-caption\"><sub>\u8fd9\u91cc\u5e94\u8be5\u662fseparating perturbation (\u5206\u79bb\u6270\u52a8\u6210\u76f4\u6d41+\u5c0f\u4ea4\u6d41\u4fe1\u53f7)\u800c\u4e0d\u662fadding perturbation<\/sub><\/figcaption><\/figure>\n<\/div>\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/ciscohe.cc\/blog\/wp-content\/uploads\/2025\/10\/0e3b267b7b14520d2c39c9e17c7738e1-scaled.png'><img class=\"lazyload lazyload-style-8\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1919\" height=\"2560\" data-original=\"https:\/\/ciscohe.cc\/blog\/wp-content\/uploads\/2025\/10\/0e3b267b7b14520d2c39c9e17c7738e1-scaled.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-908\" style=\"width:700px\"  sizes=\"auto, (max-width: 1919px) 100vw, 1919px\" \/><\/div><\/figure>\n<\/div>\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/ciscohe.cc\/blog\/wp-content\/uploads\/2025\/10\/ed2a852b08522165287f66518e97b203-scaled.png'><img class=\"lazyload lazyload-style-8\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1919\" height=\"2560\" data-original=\"https:\/\/ciscohe.cc\/blog\/wp-content\/uploads\/2025\/10\/ed2a852b08522165287f66518e97b203-scaled.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-909\" style=\"width:700px\"  sizes=\"auto, (max-width: 1919px) 100vw, 1919px\" \/><\/div><\/figure>\n<\/div>\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/ciscohe.cc\/blog\/wp-content\/uploads\/2025\/10\/d3221fa9bf8d7d8975998563333c4e00-1-scaled.png'><img class=\"lazyload lazyload-style-8\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1919\" height=\"2560\" data-original=\"https:\/\/ciscohe.cc\/blog\/wp-content\/uploads\/2025\/10\/d3221fa9bf8d7d8975998563333c4e00-1-scaled.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-913\" style=\"width:700px\"  sizes=\"auto, (max-width: 1919px) 100vw, 1919px\" \/><\/div><\/figure>\n<\/div>\n\n\n<p>PDF\u6574\u7406\u7248\u672c\uff08\u6765\u6e90\u4e8e\u672c\u4eba\u67d0\u4efd\u62a5\u544a\uff09\uff0c\u9a8c\u8bc1\u4e86\u624b\u6413\u7684\u4f20\u9012\u51fd\u6570\u662f\u6709\u6548\u6ef4\uff1a<\/p>\n\n\n\n<div data-wp-interactive=\"core\/file\" class=\"wp-block-file\"><object data-wp-bind--hidden=\"!state.hasPdfPreview\" hidden class=\"wp-block-file__embed\" data=\"https:\/\/ciscohe.cc\/blog\/wp-content\/uploads\/2025\/10\/Small-Signal-Modelling-for-buck-by-cisco.pdf\" type=\"application\/pdf\" style=\"width:100%;height:500px\" aria-label=\"\u5d4c\u5165 Small-Signal-Modelling-for-buck-by-cisco\"><\/object><a id=\"wp-block-file--media-c7be6f0a-4ed5-44f0-acb8-facc07ed3959\" href=\"https:\/\/ciscohe.cc\/blog\/wp-content\/uploads\/2025\/10\/Small-Signal-Modelling-for-buck-by-cisco.pdf\">Small-Signal-Modelling-for-buck-by-cisco<\/a><a href=\"https:\/\/ciscohe.cc\/blog\/wp-content\/uploads\/2025\/10\/Small-Signal-Modelling-for-buck-by-cisco.pdf\" class=\"wp-block-file__button wp-element-button\" download aria-describedby=\"wp-block-file--media-c7be6f0a-4ed5-44f0-acb8-facc07ed3959\">\u4e0b\u8f7d<\/a><\/div>\n\n\n\n<p><br><\/p>\n\n\n\n<p>(to be continued)<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u597d\u4e45\u6ca1\u5199\u6587\u7ae0\uff0c\u4e4b\u524d\u53d1\u8fc7\u4e00\u7bc7\u300aDesign a synchronous buck converter with  [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":934,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-901","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-6"],"_links":{"self":[{"href":"https:\/\/ciscohe.cc\/blog\/wp-json\/wp\/v2\/posts\/901","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ciscohe.cc\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ciscohe.cc\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ciscohe.cc\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ciscohe.cc\/blog\/wp-json\/wp\/v2\/comments?post=901"}],"version-history":[{"count":4,"href":"https:\/\/ciscohe.cc\/blog\/wp-json\/wp\/v2\/posts\/901\/revisions"}],"predecessor-version":[{"id":936,"href":"https:\/\/ciscohe.cc\/blog\/wp-json\/wp\/v2\/posts\/901\/revisions\/936"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ciscohe.cc\/blog\/wp-json\/wp\/v2\/media\/934"}],"wp:attachment":[{"href":"https:\/\/ciscohe.cc\/blog\/wp-json\/wp\/v2\/media?parent=901"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ciscohe.cc\/blog\/wp-json\/wp\/v2\/categories?post=901"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ciscohe.cc\/blog\/wp-json\/wp\/v2\/tags?post=901"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}