{"id":17520,"date":"2022-01-13T14:31:53","date_gmt":"2022-01-13T06:31:53","guid":{"rendered":"https:\/\/techclass.wfjydl.com\/?p=17520"},"modified":"2022-12-16T11:36:59","modified_gmt":"2022-12-16T03:36:59","slug":"%e7%94%b5%e6%ba%90%e6%97%b6%e5%ba%8f%e8%a7%84%e6%a0%bc%e2%91%a0%ef%bc%9a%e7%94%b5%e8%b7%af%e5%92%8c%e5%b8%b8%e6%95%b0%e8%ae%a1%e7%ae%97%e7%a4%ba%e4%be%8b","status":"publish","type":"post","link":"https:\/\/techclass.wfjydl.com\/knowledge\/dcdc\/dcdc-ldo\/dcdc-ldo03\/10077","title":{"rendered":"\u7535\u6e90\u65f6\u5e8f\u89c4\u683c\u2460\uff1a\u7535\u8def\u548c\u5e38\u6570\u8ba1\u7b97\u793a\u4f8b"},"content":{"rendered":"<h4>\u4f7f\u7528\u901a\u7528\u7535\u6e90IC\u5b9e\u73b0\u7535\u6e90\u65f6\u5e8f\u63a7\u5236\u7684\u7535\u8def<\/h4>\n<div id=\"keypoint-dcdc\" class=\"keypoint indent\" style=\"margin-bottom: 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href=\"https:\/\/techclass.wfjydl.com\/knowledge\/dcdc\/dcdc-ldo\/dcdc-ldo03\/10012\">\u4e0a\u4e00\u7bc7\u6587\u7ae0<\/a>\u4e2d\uff0c\u5df2\u7ecf\u4ecb\u7ecd\u4e86\u4f7f\u7528\u901a\u7528\u7535\u6e90IC\u5b9e\u73b0\u7535\u6e90\u65f6\u5e8f\u63a7\u5236\u65f6\u7535\u6e90\u65f6\u5e8f\u89c4\u683c\u2460\u7684\u7535\u6e90\u5bfc\u901a\u65f6\u548c\u5173\u65ad\u65f6\u7684\u65f6\u5e8f\u5de5\u4f5c\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5b9e\u73b0\u8fd9\u4e9b\u65f6\u5e8f\u7684\u5b9e\u9645\u7535\u8def\u793a\u4f8b\u4ee5\u53ca\u5404\u79cd\u8bbe\u7f6e\u6240\u9700\u7684\u5e38\u6570\u8ba1\u7b97\u3002<\/p>\n<h2>\u7535\u6e90\u65f6\u5e8f\u89c4\u683c\u2460\uff1a\u5b9e\u9645\u7684\u7535\u8def\u548c\u5e38\u6570\u8ba1\u7b97\u793a\u4f8b<\/h2>\n<p>\u5b9e\u73b0\u7535\u6e90\u65f6\u5e8f\u7684\u7535\u8def\u793a\u4f8b\u5982\u4e0b\u6240\u793a\u3002\u4e09\u4e2a\u7cfb\u7edf\u7684DCDC 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Good\u529f\u80fd\u7684\u3002IC1\u548cIC3\u7528\u4e8e\u68c0\u6d4b\u7535\u6e90\u5bfc\u901a\u65f6DCDC\u8f93\u51fa\u7535\u538b\u662f\u5426\u4e0a\u5347\u5230\u8bbe\u5b9a\u503c\uff0cIC2\u548cIC4\u7528\u4e8e\u68c0\u6d4b\u7535\u6e90\u5173\u65ad\u65f6DCDC\u8f93\u51fa\u7535\u538b\u7684\u4e0b\u964d\u60c5\u51b5\u3002\u4e0b\u56fe\u4e3a\u5305\u542bBD4142HFV\u5185\u90e8\u529f\u80fd\u6a21\u5757\u5728\u5185\u7684Power Good\u7535\u8def\u3002<\/p>\n<p style=\"text-align: center; font-weight: bold;\">\n<img loading=\"lazy\" decoding=\"async\" width=\"492\" height=\"308\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2022\/01\/D8-5_f2.png\" alt=\"\" class=\"alignnone size-full wp-image-17522\" \/><\/p>\n<p><span style=\"text-align: center;\">\u7531BD4142HFV\u7ec4\u6210\u7684Power Good\u529f\u80fd<\/span><\/p>\n<p>\u8be5IC\u5185\u7f6e\u6709\u8fdf\u6ede\u6bd4\u8f83\u5668\uff0c\u57fa\u51c6\u7535\u538b\u4e3a0.5V\uff08\u89c1IC\u529f\u80fd\u6a21\u5757\uff09\uff0c\u53ef\u4ee5\u4f7f\u7528\u5916\u7f6e\u5206\u538b\u7535\u963b\u8bbe\u7f6e\u60f3\u8981\u68c0\u6d4b\u7684\u7535\u538b\u3002\u7528\u6765\u68c0\u6d4bDCDC\u8f93\u51fa\u7535\u538b\u4e0a\u5347\u60c5\u51b5\u7684IC1\u548cIC3\uff0c\u9700\u8981\u6839\u636eDC\/DC\u7684\u8f93\u51fa\u7535\u538b\u8fdb\u884c\u8be5\u8bbe\u7f6e\u3002\u68c0\u6d4b\u7535\u538bV<sub>PGOOD<\/sub>\u53ef\u901a\u8fc7\u516c\u5f0f1-1\u6765\u8ba1\u7b97\u3002<\/p>\n<p style=\"margin-left: 20px;\">\n<img loading=\"lazy\" decoding=\"async\" width=\"325\" height=\"39\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2022\/01\/D8-5_formula01.png\" alt=\"\" class=\"alignnone size-full wp-image-17523\" \/>\n<\/p>\n<p>\u65f6\u5e8f\u7535\u8def\u793a\u4f8b\u7684V<sub>OUT1<\/sub>\u4e3a1.2V\uff0cIC1\u7684PGOOD\u8bbe\u7f6e\u4e3a\u5f53\u8fbe\u5230\u8f93\u51fa\u7535\u538b\u768490%\u65f6\u8f93\u51fa\u4e00\u4e2a\u6807\u5fd7\u3002\u5982\u679c\u68c0\u6d4b\u7535\u538b\u8bbe\u7f6e\u5f97\u8fc7\u9ad8\uff08\u598295%\uff09\uff0c\u5f53\u8f93\u51fa\u7535\u538b\u56e0\u8d1f\u8f7d\u6ce2\u52a8\u800c\u77ac\u95f4\u4e0b\u964d\u65f6\uff0cPGOOD\u8f93\u51fa\u5c06\u53d8\u4e3a\u201cL\u201d\uff0c\u4f1a\u9020\u6210\u540e\u6bb5DCDC\u77ac\u65ad\u7684\u95ee\u9898\u3002\u56e0\u6b64\u9700\u8981\u5728\u4e86\u89e3\u4e86DCDC\u7684\u8d1f\u8f7d\u6ce2\u52a8\u548c\u538b\u964d\uff08\u8d1f\u8f7d\u54cd\u5e94\uff09\u7279\u6027\u540e\uff0c\u518d\u786e\u5b9a\u68c0\u6d4b\u7535\u538b\u3002<\/p>\n<p>\u572890%\u65f6\u7684\u68c0\u6d4b\u7535\u538b\u4e3a1.2V\u00d70.9\uff1d1.08V\u3002\u7535\u963b\u503c\u53ef\u4ee5\u6839\u636e\u516c\u5f0f1-1\u6765\u8ba1\u7b97\u3002\u8ba1\u7b97\u51fa\u6765\u7684\u7535\u963b\u503c\u5df2\u5728\u7535\u8def\u793a\u4f8b\u7684IC1\u5904\u6807\u51fa\uff0c\u516c\u5f0f1-1\u4e2d\u7684R2\u5bf9\u5e94\u4e8e\u7535\u8def\u793a\u4f8b\u4e2d\u7684R6\uff1a15k\u03a9\uff0bR7\uff1a82\u03a9\uff0cR3\u5bf9\u5e94\u4e8eR8\uff1a13k\u03a9\u3002\u5c06\u8fd9\u4e9b\u503c\u4ee3\u5165\u540e\u516c\u5f0f\u5982\u4e0b\uff0c\u7ed3\u679c\u8868\u660e\u8be5\u5e38\u6570\u662f\u53ef\u4ee5\u83b7\u5f97\u6240\u9700\u76841.08V\u7684\u5e38\u6570\u3002<\/p>\n<p style=\"margin-left: 20px;\">\n<img loading=\"lazy\" decoding=\"async\" width=\"378\" height=\"39\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2022\/01\/D8-5_formula02.png\" alt=\"\" class=\"alignnone size-full wp-image-17524\" \/>\n<\/p>\n<p>\u4ece\u516c\u5f0f\u4e2d\u53ef\u4ee5\u770b\u51fa\uff0c\u9700\u8981\u9488\u5bf9VPGOOD\u786e\u5b9a\u7535\u963b\u503c\uff0c\u4ee5\u4f7fR2\u548cR3\u65bd\u52a0\u5230IN\u5f15\u811a\u7684\u5206\u538b\u7535\u538b\u53d8\u4e3a\u5185\u90e8\u57fa\u51c6\u7535\u538b0.5V\u3002\u7535\u538b\u662f\u7531\u7535\u963b\u6bd4\u51b3\u5b9a\u7684\uff0c\u4f46\u7531\u4e8e\u8be5\u5206\u538b\u7535\u963b\u4e5f\u662fDCDC\u7684\u8d1f\u8f7d\uff0c\u56e0\u6b64\u91c7\u752810k\u03a9\u7ea7\u7684\u7535\u963b\u503c\u6bd4\u8f83\u5408\u9002\u3002\u4f46\u662f\uff0cR2\u548cR3\u7684\u603b\u548c\u8981\u5728300k\u03a9\u4ee5\u5185\u3002\u5982\u6b32\u4e86\u89e3\u66f4\u8be6\u7ec6\u7684\u4fe1\u606f\uff0c\u8bf7\u53c2\u9605IC\u7684<a href=\"https:\/\/www.wfjydl.com\/products\/power-management\/voltage-detectors\/adjustable-delay-time\/bd4142hfv-product\" target=\"_blank\" rel=\"noopener\">\u6280\u672f\u89c4\u683c\u4e66<\/a>\u3002<\/p>\n<p>\u8fd9\u6837\uff0c\u57fa\u672c\u7684\u5e38\u6570\u5c31\u786e\u5b9a\u4e86\uff0c\u4f46\u4f5c\u4e3a\u8bbe\u8ba1\uff0c\u8fd8\u9700\u8981\u786e\u8ba4\u8bbe\u7f6e\u503c\uff08\u68c0\u6d4b\u7535\u538b\uff09\u7684\u5bb9\u5dee\u3002BD4142HFV\u7684\u68c0\u6d4b\u7535\u538b\u5bb9\u5dee\u4e3a\u00b11.8%\u3002\u56e0\u6b64\uff0cPGOOD\u7684\u8303\u56f4\u662f\u4ece88.4%\uff0890%\uff0d1.8%\uff1d90\u00d70.982\uff09\u523091.6%\uff0890%\uff0b1.8%\uff1d90\u00d71.018\uff09\u3002<\/p>\n<p>\u53e6\u5916\uff0c\u7531\u4e8e\u670910mV\u7684\u8fdf\u6ede\uff0c\u56e0\u6b64\u68c0\u6d4b\u89e3\u9664\u7535\u538b\u4e3a90%\u00d7\uff080.5V\uff0d10mV\uff09\u00f70.5V\uff1d88.2%\uff0c\u8303\u56f4\u4e3a88.2%\u00d70.982\uff1d86.6%\u523088.2%\u00d71.018\uff1d89.8%\u3002<\/p>\n<p>\u6b64\u5916\uff0cBD4142HFV\u5728PGOOD\u6807\u5fd7\u8f93\u51fa\u4e2d\u4e5f\u53ef\u4ee5\u6709\u5ef6\u8fdf\u65f6\u95f4t<sub>DELAY<\/sub>\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u8981\u5c06\u7535\u5bb9\u5668C2\u8fde\u63a5\u5230DLY\u5f15\u811a\u3002\u5ef6\u8fdf\u65f6\u95f4\u548c\u7535\u5bb9\u5668C2\u7684\u503c\u53ef\u4ee5\u901a\u8fc7\u516c\u5f0f1-2\u6765\u8ba1\u7b97\u3002<\/p>\n<p style=\"margin-left: 20px;\">\n<img loading=\"lazy\" decoding=\"async\" width=\"240\" height=\"39\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2022\/01\/D8-5_formula03.png\" alt=\"\" class=\"alignnone size-full wp-image-17525\" \/>\n<\/p>\n<p>\u5f53DCDC\u7684\u8f93\u51fa\u7535\u538b\u964d\u81f3\u7ea60.5V\u4ee5\u4e0b\u65f6\uff0c\u5728\u7535\u6e90\u5173\u65ad\u65f6\u5de5\u4f5c\u7684PGOOD\u7684IC2\u548cIC4\u5c06\u4f1a\u505c\u6b62\u68c0\u6d4b\uff08PGOOD\u8f93\u51fa\u5c06\u4ece\u201cH\u201d\u53d8\u4e3a\u201cL\u201d\uff09\u3002\u8fd9\u662f\u76f4\u63a5\u4f7f\u7528BD4142HFV\u5df2\u8bbe\u7f6e\u597d\u7684\u68c0\u6d4b\u7535\u538b\u3002<\/p>\n<h3>\u25cf\u653e\u7535\u7535\u8def<\/h3>\n<p>\u5728\u8be5\u7535\u8def\u4e2d\uff0c\u5206\u7acb\u7ed3\u6784\u7684\u653e\u7535\u7535\u8def\u8fde\u63a5\u5230\u6bcf\u4e2aDCDC\u3002\u5982\u4e0b\u56fe\u6240\u793a\uff0c\u8be5\u7535\u8def\u7531NPN\u6676\u4f53\u7ba1\u548c\u7535\u963b\u7ec4\u6210\u3002\u7b2c\u4e00\u6bb5\u7684\u6676\u4f53\u7ba1\u662f\u7b80\u5355\u7684\u9006\u53d8\u5668\u7535\u8def\uff0c\u7b2c\u4e8c\u6bb5\u662f\u96c6\u7535\u6781\u5f00\u8def\u5f00\u5173\u3002\u7b2c\u4e8c\u6bb5\u5bfc\u901a\u65f6\uff0c\u5728DCDC\u5173\u65ad\u65f6\u4e3b\u8981\u662f\u91ca\u653e\u8f93\u51fa\u7535\u5bb9\u5668\u7684\u6b8b\u4f59\u7535\u8377\uff0c\u4f7fVOUT\u8fc5\u901f\u4e0b\u964d\u3002\u8f93\u51fa\u7535\u538b\u7684\u4e0b\u964d\u65f6\u95f4\u6839\u636e\u4e0e\u7b2c\u4e8c\u6bb5\u6676\u4f53\u7ba1\u7684\u96c6\u7535\u6781\u4e32\u8054\u7684\u7535\u963b\uff08\u4e0b\u56fe\u4e2d\u7684R4\uff09\u503c\u6765\u8c03\u6574\u3002<\/p>\n<p style=\"text-align: center;\">\n<img loading=\"lazy\" decoding=\"async\" width=\"492\" height=\"335\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2022\/01\/D8-5_f3.png\" alt=\"\" class=\"alignnone size-full wp-image-17526\" \/><br \/>\n<span style=\"text-align: center; font-weight: 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