{"id":6218,"date":"2019-04-11T00:00:12","date_gmt":"2019-04-10T15:00:12","guid":{"rendered":"https:\/\/micro.wfjydl.com\/techweb\/?p=6218"},"modified":"2021-11-12T10:53:14","modified_gmt":"2021-11-12T02:53:14","slug":"%e4%b8%bb%e8%a6%81%e9%83%a8%e4%bb%b6%e9%80%89%e5%9e%8b%ef%bc%9a%e7%94%b5%e6%ba%90ic%e7%9a%84vcc%e7%9b%b8%e5%85%b3%e9%83%a8%e4%bb%b6","status":"publish","type":"post","link":"https:\/\/techclass.wfjydl.com\/knowledge\/acdc\/acdc_pwm\/acdc_pwm05\/7352","title":{"rendered":"\u4e3b\u8981\u90e8\u4ef6\u9009\u578b\uff1a\u7535\u6e90IC\u7684VCC\u76f8\u5173\u90e8\u4ef6"},"content":{"rendered":"<p>\u672c\u6587\u4e2d\u5c06\u786e\u5b9a\u672c\u8bbe\u8ba1\u4e2d\u4f7f\u7528\u7684\u7535\u6e90IC\u7684VCC\u5f15\u811a\u76f8\u5173\u7684\u5143\u5668\u4ef6\u5e38\u6570\u3002VCC\u5f15\u811a\u662f\u7535\u6e90IC <a href=\"https:\/\/www.wfjydl.com\/products\/power-management\/ac-dc-converters-ics\/ac-dc-converters-ics-pwm-qr\/bd7682fj-lb-product\" target=\"_blank\" rel=\"noopener noreferrer\">BD7682FJ<\/a>\u7684\u7535\u6e90\u5f15\u811a\u3002<\/p>\n<div class=\"fBox\">\n<div style=\"width: 375px;\" class=\"fl\">\n<p>BD7682FJ\u7684\u5185\u90e8\u63a7\u5236\u7535\u8def\u901a\u8fc7\u65bd\u52a0\u4e8eVCC\u5f15\u811a\u7684\u7535\u538b\u6765\u5de5\u4f5c\u3002\u5927\u5bb6\u90fd\u77e5\u9053\uff0c\u5982\u679c\u8fd9\u4e2a\u7535\u6e90\u7535\u8def\u7684\u8f93\u5165\u7535\u538b\u4e3a300V\uff5e900V\u7684\u8bdd\uff0c\u4e0d\u4ec5\u4e0d\u80fd\u76f4\u63a5\u5de5\u4f5c\uff0c\u8fd8\u6709\u53ef\u80fd\u77ac\u95f4\u88ab\u7834\u574f\u3002\u56e0\u6b64\uff0c\u9700\u8981\u751f\u6210\u8f83\u4f4e\u7684DC\u7535\u538b\u4f9b\u8be5IC\u7535\u6e90\u4e4b\u7528\u3002VCC\u7684\u5de5\u4f5c\u7535\u538b\u8303\u56f4\u4e3a15.0V\uff5e27.5V\uff0c\u5728\u201c<a href=\"\/knowledge\/acdc\/acdc_pwm\/acdc_pwm05\/6823\" target=\"_blank\" rel=\"noopener noreferrer\">\u53d8\u538b\u5668T1\u7684\u8bbe\u8ba1\u3000\u51762<\/a>\u201d\u4e2d\u5df2\u7ecf\u4ecb\u7ecd\u8fc7\uff0c\u8ba1\u7b97\u53d8\u538b\u5668VCC\u7ed5\u7ec4Nd\uff08\u4e5f\u79f0\u4e3a\u201c\u88dc\u52a9\u7ed5\u7ec4\u201d\u6216\u201c\u7b2c\u4e09\u7ed5\u7ec4\u201d\uff09\u65f6\uff0c\u5df2\u7ecf\u4ee5VCC\uff1d24V\u4e3a\u524d\u63d0\u8ba1\u7b97\u51fa\u4e86Nd\u3002<\/p>\n<p>\u53f3\u4fa7\u7535\u8def\u56fe\u4e3a\u76f8\u5e94\u90e8\u5206\u7684\u6458\u5f55\u3002\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u6765\u786e\u5b9a\u201cVCC\u7528\u7535\u538b\u751f\u6210\uff08\u6a59\u8272\u6846\uff09\u201d\u3001\u201cVCC\u7ed5\u7ec4\u6d6a\u6d8c\u7535\u538b\u6291\u5236\uff08\u6a59\u8272\u6846\uff09\u201d\u53ca\u201cVCC\u542f\u52a8\uff08\u84dd\u8272\u6846\uff09\u201d\u76f8\u5173\u7535\u8def\u7684\u5143\u5668\u4ef6\u5e38\u6570\u3002<\/p>\n<p><strong>VCC\u7535\u538b\u751f\u6210\u7528\u6574\u6d41\u4e8c\u6781\u7ba1D18\u53ca\u6ee4\u6ce2\u7528\u7535\u5bb9C5<\/strong><\/p>\n<p>\u901a\u8fc7\u7535\u8def\u56fe\u6a59\u8272\u6846\u5185\u7684\u4e8c\u6781\u7ba1D18\u548c\u7535\u5bb9C5\uff0c\u5c06VCC\u7ed5\u7ec4Nd\uff08\u7535\u8def\u56fe\u7684\u7b2c5\uff0d6\u7ed5\u7ec4\uff09\u4ea7\u751f\u7684\u5f00\u5173\u7535\u538b\u6574\u6d41\u4e3aDC\u7535\u538b\u5e76\u6ee4\u6ce2\u3002\u8be5\u7535\u8def\u4e0e\u4e8c\u6781\u7ba1\u6574\u6d41\u578bDC\/DC\u8f6c\u6362\u5668\u57fa\u672c\u76f8\u540c\u3002\uff08\u6846\u5185\u7684\u7535\u611fL4\u5b9e\u9645\u4e0a\u662f\u4e0d\u4f7f\u7528\u7684\uff0c\u8bf7\u5ffd\u7565\u3002\u53e6\u5916\uff0c\u7535\u963bRvcc1\u662f\u6d6a\u6d8c\u6291\u5236\u7535\u963b\uff0c\u540e\u7eed\u4f1a\u8fdb\u884c\u8bf4\u660e\uff09<\/p>\n<p>D18\u7684\u8010\u538b\u901a\u8fc7\u8ba1\u7b97\u65bd\u52a0\u4e8eD18\u7684\u53cd\u5411\u7535\u538bVdr\u6765\u786e\u5b9a\u3002<\/p>\n<\/p><\/div>\n<div style=\"width: 305px;\" class=\"fr\">\n\t\t<img loading=\"lazy\" decoding=\"async\" src=\"\/upload\/2018\/01\/A5-9_graf01.gif\" alt=\"D7682FJ\u7535\u8def\u56fe\" width=\"305\" height=\"567\">\n\t<\/div>\n<\/div>\n<p class=\"c-pl20\"><img loading=\"lazy\" decoding=\"async\" src=\"\/upload\/2018\/01\/A5-9_graf02.gif\" alt=\"D18\u7684\u8010\u538b\u8ba1\u7b971\" width=\"248\" height=\"45\"><\/p>\n<p>VCC(max)\u630931.5V\u3002VCC\u5f15\u811a\u5177\u6709VCC OVP\uff08\u8fc7\u7535\u538b\u4fdd\u62a4\uff09\u529f\u80fd\uff0c\u5176\u6700\u5927\u503c\u4e3a31.5V\uff0c\u6240\u4ee5VCC\u7535\u538b\u5373\u4f7f\u4e0a\u5347\u5230\u8fd9\u4e2a\u7535\u538b\u503c\uff0c\u4e5f\u4e0d\u4f1a\u8d85\u8fc7D18\u7684\u8010\u538b\u3002\u8bbeVf\u4e3a1V\u3002VIN\uff08max\uff09\u4e3a900V\u3002\u6839\u636e\u201c\u53d8\u538b\u5668T1\u7684\u8bbe\u8ba1\u3000\u51762\u201d\u4e2d\u6c42\u5f97\u7684\u7ed3\u679c\uff0cNd\u4e3a8\u531d\uff0c\u540c\u6837\uff0cNp\u4e3a64\u531d\u3002<\/p>\n<p>\u5c06\u8fd9\u4e9b\u503c\u4ee3\u5165\uff0c<\/p>\n<p class=\"c-pl20\"><img loading=\"lazy\" decoding=\"async\" src=\"\/upload\/2018\/01\/A5-9_graf03.gif\" alt=\"D18\u7684\u8010\u538b\u8ba1\u7b972\" width=\"282\" height=\"47\"><\/p>\n<p>\u8003\u8651\u5230\u4f59\u91cf\u540e\uff0c\u6839\u636e145V\/0.7\u2252200V\uff0c\u6700\u7ec8\u9009\u62e9\u5177\u6709200V\u8010\u538b\u7684\u4e8c\u6781\u7ba1\u3002D18\u6839\u636e\u5176\u76ee\u7684\u9700\u8981\u9009\u62e9\u9002\u5408\u9ad8\u901f\u5f00\u5173\u7684\u7c7b\u578b\u3002\u6b64\u6b21\u4f7f\u7528极悦娱乐\u751f\u6210\u7684\u5feb\u901f\u6062\u590d\u4e8c\u6781\u7ba1<a href=\"https:\/\/www.wfjydl.com\/products\/diodes\/fast-recovery-diodes\/standard\/rf05vam2s-product\" target=\"_blank\" rel=\"noopener noreferrer\">RF05VAM2S<\/a>\u3002<\/p>\n<p>\u7535\u5bb9C5\u9009\u62e922\u00b5F\u7684\u94dd\u7535\u89e3\u7535\u5bb9\u6bd4\u8f83\u5408\u9002\uff0c\u6839\u636eVcc\uff08max\uff09\u8010\u538b\u4e3a35V\u3002<\/p>\n<p><strong>VCC\u7ed5\u7ec4\u7528\u6d6a\u6d8c\u7535\u538b\u6291\u5236\u7535\u963bRvcc1<\/strong><\/p>\n<p>\u53d7\u53d8\u538b\u5668\u7684\u6f0f\u7535\u611f\uff08Lleak\uff09\u5f71\u54cd\uff0c\u5f53MOSFET\u4eceON\u81f3OFF\u7684\u77ac\u95f4\uff0c\u5c06\u4ea7\u751f\u5927\u7684\u6d6a\u6d8c\u7535\u538b\uff08\u5cf0\u6ce2\u566a\u58f0\uff09\u3002\u8fd9\u79cd\u6d6a\u6d8c\u7535\u538b\u662f\u7531VCC\u7ed5\u7ec4\u6240\u5f15\u8d77\u7684\uff0cVCC\u7535\u538b\u4e0a\u5347\u53ef\u80fd\u4f1a\u5f15\u53d1VCC\u5f15\u811a\u7684VCC OVP\u52a8\u4f5c\u3002\u63d2\u51655~22\u03a9\u5de6\u53f3\u7684\u6291\u5236\u7535\u963bRvcc1\u6765\u964d\u4f4e\u8fd9\u79cd\u6d6a\u6d8c\u7535\u538b\u3002\u8bf7\u5728\u5b9e\u9645\u5b89\u88c5\u5728\u4ea7\u54c1\u4e2d\u7684\u72b6\u6001\u4e0b\u786e\u8ba4VCC\u7535\u538b\u7684\u4e0a\u5347\u60c5\u51b5\u5e76\u8c03\u6574\u7535\u963b\u503c\u3002<\/p>\n<p><strong>VCC\u542f\u52a8\u7528\u7535\u963bR11\u3001R12\u3001R13\u3001R14\u3001\u7535\u5bb9C6\u3001\u4e8c\u6781\u7ba1D19<\/strong><\/p>\n<p>\u5bf9\u4e8eVCC\u7ed5\u7ec4\u7684VCC\u7535\u538b\u6765\u8bf4\uff0c\u4e8c\u6b21\u4fa7\u7684\u8f93\u51fa\u662f\u57fa\u7840\uff08Ns\uff1aNd\uff09\u3002\u6240\u4ee5\uff0c\u5728\u539f\u7406\u4e0a\uff0c\u7535\u8def\u5982\u679c\u4e0d\u5f00\u59cb\u5f00\u5173\u5de5\u4f5c\uff0c\u5c31\u4e0d\u4f1a\u4ea7\u751fVCC\u7535\u538b\uff0c\u6545\u9700\u8981\u5728\u542f\u52a8\u65f6\u53e6\u884c\u7ed9IC\u65bd\u52a0VCC\u7535\u538b\u3002\u542f\u52a8\u7528\u7535\u963b\uff08Rstart\uff09R11\u3001R12\u3001R13\u3001R14\u4e0e\u542f\u52a8\u7528\u7535\u5bb9\uff08Cstart\uff09C6\u4e00\u8d77\u542f\u52a8IC\u3002\u53e6\u5916\uff0c\u8fd8\u53ef\u4ee5\u4f7f\u7528\u8fd9\u79cdCR\u6765\u8c03\u6574\u542f\u52a8\u65f6\u95f4\u3002\u6b64\u5916\uff0c\u5bf9\u5f85\u673a\u529f\u8017\u4e5f\u6709\u5f71\u54cd\u3002<\/p>\n<p>\u542f\u52a8\u7528\u7535\u963bRstart\u53ef\u901a\u8fc7\u4ee5\u4e0b\u516c\u5f0f\u6240\u793a\u7684\u6700\u5c0f\u548c\u6700\u5927\u6761\u4ef6\u6c42\u51fa\u3002\u6839\u636eVIN_min\u53d6\u4f59\u91cf\uff0cVIN_start\u6309180V\u3002\u6839\u636e\u6280\u672f\u89c4\u683c\u4e66\uff0cVCC 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class=\"c-pl20\">2895k\u03a9\uff1cRstart\uff1c4000k\u03a9<\/p>\n<p>\u6839\u636e\u8ba1\u7b97\u7ed3\u679c\uff0cRstart\u4e3a2940k\u03a9\uff08R11\u3001R12\u54041M\u03a9\uff0cR13\u3001R14\u5404470k\u03a9\uff09\u3002<\/p>\n<p>\u542f\u52a8\u7528\u7535\u5bb9\uff08Cstart\uff09C6\u7531\u4e8e\u8fd8\u5177\u6709\u4f7fVCC\u7a33\u5b9a\u7684\u4f5c\u7528\uff0c\u6240\u4ee5\u63a8\u8350\u91c7\u75282.2\u00b5F\u4ee5\u4e0a\u7684\u7535\u5bb9\u3002\u518d\u8003\u8651\u5230\u524d\u8ff0\u7684\u542f\u52a8\u65f6\u95f4\uff0c\u672c\u6b21\u91c7\u75284.7\u00b5F\u7684\u7535\u5bb9\u3002\u56fe\u4e2d\u663e\u793a\u4e86Cstart\u4e0eVIN\u7684\u542f\u52a8\u65f6\u95f4\u7684\u5173\u7cfb\u3002<\/p>\n<div class=\"fBox\">\n<div style=\"width: 370px;\" class=\"fl\">\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" src=\"\/upload\/2018\/01\/A5-9_graf04.gif\" alt=\"\u542f\u52a8\u65f6\u95f4VS\u8f93\u5165\u7535\u538b\" width=\"350\" height=\"245\"><\/p>\n<p>\u5173\u4e8e\u4e0e\u542f\u52a8\u7535\u963bRstart\u4e4b\u95f4\u7684\u5173\u7cfb\uff0c\u5982\u679c\u5c06Rstart\u7684\u503c\u8bbe\u7f6e\u7684\u8f83\u5c0f\uff0c\u5219\u542f\u52a8\u65f6\u95f4\u7f29\u77ed\uff0c\u5f85\u673a\u529f\u8017\u589e\u52a0\u3002\u53cd\u4e4b\uff0c\u5982\u679c\u5c06Rstart\u7684\u503c\u8c03\u5927\uff0c\u5219\u542f\u52a8\u65f6\u95f4\u5ef6\u957f\uff0c\u5f85\u673a\u529f\u8017\u53d8\u5c0f\u3002<\/p>\n<p>\u5f53VIN\u63a5\u901a\u65f6\uff0cC6\u88ab\u5145\u7535\uff1b\u5f53VCC\u5f15\u811a\u7684\u7535\u538b\u8fbe\u5230\u542f\u52a8\u7535\u538b\u65f6\uff0cIC\u5f00\u59cb\u5de5\u4f5c\u3002\u5176\u540e\uff0c\u5f53\u8f93\u51fa\u7535\u538b\u8d85\u8fc7\u6052\u5b9a\u7535\u538b\u65f6\uff0cVCC\u751f\u6210\u7535\u8def\u5de5\u4f5c\u4e14\u4f9b\u7ed9VCC\u7535\u538b\u3002\u4e8c\u6781\u7ba1D19\u8981\u907f\u514d\u7ed9\u542f\u52a8\u65f6\u7684\u6ee4\u6ce2\u7528\u7535\u5bb9C5\u5145\u7535\u3002D19\u4f7f\u7528\u53cd\u5411\u7535\u6d41IR\u5f88\u4f4e\u7684\u5f00\u5173\u4e8c\u6781\u7ba1<a href=\"https:\/\/www.wfjydl.com\/products\/diodes\/switching-diodes\/standard\/1ss355vm-product\" target=\"_blank\" rel=\"noopener noreferrer\">1SS355VM<\/a>\uff08极悦娱乐\u751f\u4ea7\uff09\u3002\u8bf7\u53c2\u8003\u8fd9\u91cc\u7684\u7535\u8def\u56fe\uff08\u5728\u8be5\u7535\u8def\u4e2d\uff0cRvcc1\u4e3a22\u03a9\uff09\u3002<\/p>\n<\/p><\/div>\n<div style=\"width: 305px;\" class=\"fr\">\n\t\t<img loading=\"lazy\" decoding=\"async\" src=\"\/upload\/2018\/01\/A5-9_graf05.gif\" alt=\"\u542f\u52a8\u7528\u7535\u963b\u548c\u7535\u5bb9\" width=\"305\" height=\"514\">\n\t<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"\u672c\u6587\u4e2d\u5c06\u786e\u5b9a\u672c\u8bbe\u8ba1\u4e2d\u4f7f\u7528\u7684\u7535\u6e90IC\u7684VCC\u5f15\u811a\u76f8\u5173\u7684\u5143\u5668\u4ef6\u5e38\u6570\u3002VCC\u5f15\u811a\u662f\u7535\u6e90IC BD7682FJ\u7684\u7535\u6e90\u5f15\u811a\u3002 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