{"id":1099,"date":"2018-09-26T02:00:03","date_gmt":"2018-09-26T02:00:03","guid":{"rendered":""},"modified":"2018-09-25T16:49:55","modified_gmt":"2018-09-25T08:49:55","slug":"led+%e4%ba%a7%e5%93%81+pwm+%e8%b0%83%e5%85%89%e6%96%b9%e6%a1%88","status":"publish","type":"post","link":"http:\/\/www.szryc.com\/?p=1099","title":{"rendered":"LED \u4ea7\u54c1 PWM \u8c03\u5149\u65b9\u6848"},"content":{"rendered":"
\n

\n\t\t\u65b9\u6848\u4ecb\u7ecd<\/h2>\n
\n
\n

\n\t\t\t\tLED \u7167\u660e\u8f83\u5176\u4ed6\u7167\u660e\u4ea7\u54c1\u5177\u6709\u7eff\u8272\u3001\u8282\u80fd\u3001\u73af\u4fdd\u3001\u957f\u5bff\u547d\u7b49\u4f18\u70b9\uff0c\u968f\u7740\u6574\u4f53\u6210\u672c\u964d\u4f4e\uff0cLED \u7167\u660e\u5f00\u59cb\u5e7f\u6cdb\u4f7f\u7528\u5728\u5546\u4e1a\u3001\u5bb6\u5ead\u7b49\u9886\u57df\u3002\u800c\u667a\u80fd\u578b LED \u7167\u660e\u72ec\u6709\u7684\u7279\u70b9\u9002\u7528\u4e8e\u4e0d\u540c\u7684\u5e94\u7528\u573a\u5408\u548c\u9700\u6c42\uff0c\u5982\u8fdc\u7a0b\u63a7\u5236\u3001\u5b9a\u65f6\u5f00\u5173\u3001\u8c03\u5149\u3001\u8c03\u8272\u7b49\u3002 <\/span><\/p>\n

\n\t\t\t\tXLSEMI \u7814\u5236\u51fa\u9488\u5bf9 LED \u7167\u660e\u7684\u5168\u96c6\u6210\u5f00\u5173\u578b\u53d8\u6362\u65b9\u6848\uff0c\u5185\u90e8\u96c6\u6210\u9ad8\u538b\u3001\u5927\u529f\u7387 MOSFET \u5f00\u5173\u7ba1\uff0c\u5916\u56f4\u5143\u5668\u4ef6\u7b80\u5355\uff0c\u7cfb\u7edf\u5e94\u7528\u7075\u6d3b\uff0c\u8f6c\u6362\u6548\u7387\u9ad8\uff0c\u7cfb\u7edf\u4f53\u79ef\u5c0f\uff0c\u5185\u7f6e\u8fc7\u6e29\u4fdd\u62a4\u3001\u8fc7\u6d41\u4fdd\u62a4\u3001\u77ed\u8def\u4fdd\u62a4\u7b49\u5168\u5957\u53ef\u9760\u6027\u4fdd\u62a4\u7535\u8def\uff0c\u540c\u65f6\u517c\u5bb9\u5916\u7f6e PWM \u4fe1\u53f7\u8c03\u5149\u529f\u80fd\uff0c\u5b9e\u73b0\u667a\u80fd\u9a71\u52a8 LED\u3002 <\/span><\/p>\n

\n\t\t\t\t <\/p>\n<\/p><\/div>\n

\n\t\t\t\u5e94\u7528\u8303\u56f4<\/h3>\n
\n

\n\t\t\t\tLED \u7167\u660e<\/p>\n<\/p><\/div>\n

\n\t\t\t\u7279\u8272<\/h3>\n
\n

\n\t\t\t\tXL30XX \u7cfb\u5217\u53ef\u4ee5\u901a\u8fc7\u5916\u7f6e PWM \u4fe1\u53f7\uff0c\u6539\u53d8 PWM \u4fe1\u53f7\u5360\u7a7a\u6bd4\u6765\u5b9e\u73b0\u8c03\u5149\u529f\u80fd\uff0cPWM \u4fe1\u53f7\u5360\u7a7a\u6bd4\u53d8\u5316\u8303\u56f4 0%-100%\uff0cPWM<\/span><\/p>\n

\n\t\t\t\t\u4fe1\u53f7\u9891\u7387\u8303\u56f4 1KHz-10KHz\u3002 <\/span><\/p>\n

\n\t\t\t\t <\/p>\n

\n\t\t\t\t\"5.png\"<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/div>\n

\n

\n\t\t\u7cfb\u7edf\u65b9\u5757\u56fe<\/h2>\n
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\n\t\t\t\"1.png\"<\/p>\n<\/p><\/div>\n<\/div>\n

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\n\t\t\u76f8\u5173\u6587\u6863<\/h2>\n
\n\n\n\n
\n\t\t\t\t\t\t\u5e94\u7528\u624b\u518c\uff1a<\/td>\n\n\t\t\t\t\t\tXLSEMI\u6052\u6d41LED\u4ea7\u54c1PWM\u8c03\u5149\u65b9\u6848\u7b80\u4ecb.pdf<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/div>\n
\n

\n\t\t\u6210\u529f\u6848\u4f8b<\/h2>\n
\n

\n\t\t\t\u53c2\u8003\u6570\u636e <\/strong><\/span><\/p>\n

\n\t\t\t\u5907\u6ce8\uff1aVPWM=5.0V \u65f6\uff0c\u7535\u963b R2=20K\uff0cVPWM=3.3V \u65f6\uff0c\u7535\u963b R2=12K\u3002 <\/span><\/p>\n

\n\t\t\t\u6d4b\u8bd5\u6761\u4ef6 1\uff0c\u8f93\u5165 12V\/24V\uff0c\u8f93\u51fa\u63a5 3 \u4e32 LED\uff0c\u521d\u59cb\u7535\u6d41\u503c\u8bbe\u5b9a\u4e3a 309mA\/618mA\uff0c\u8c03\u5149\u4fe1\u53f7\u5e45\u503c\u4e3a 5.0V\/3.3V\uff0c\u9891\u7387\u4e3a 1KHz\u30015KHz\u300110KHz\u3002 <\/span><\/p>\n

\n\t\t\t\"2.png\"<\/p>\n

\n\t\t\t\u6d4b\u8bd5\u6761\u4ef6 2\uff0c\u8f93\u5165 8V-36V\uff0c\u8f93\u51fa\u63a5 2 \u4e32 LED\uff0c\u521d\u59cb\u7535\u6d41\u503c\u8bbe\u5b9a\u4e3a 309mA\uff0c\u8c03\u5149\u4fe1\u53f7\u5e45\u503c\u4e3a 5.0V\/3.3V\uff0c\u9891\u7387\u4e3a 1KHz\u300110KHz\u3002 <\/span><\/p>\n

\n\t\t\t\"3.png\"<\/p>\n

\n\t\t\t\u53c2\u8003\u6ce2\u5f62 <\/strong><\/p>\n

\n\t\t\t\u8f93\u5165 12V\uff0c\u8f93\u51fa\u63a5 3 \u4e32 LED\uff0c\u521d\u59cb\u7535\u6d41\u503c\u8bbe\u5b9a\u4e3a 309mA\uff0c\u8c03\u5149\u4fe1\u53f7\u5e45\u503c\u4e3a 5.0V\uff0c\u5360\u7a7a\u6bd4 50%\uff0c\u9891\u7387\u4e3a 5KHz\u300110KHz\u3002 <\/span><\/p>\n

\n\t\t\t\u5907\u6ce8\uff1a\u901a\u9053 1 \u9ec4\u8272\uff0cPWM \u4fe1\u53f7\u6ce2\u5f62\uff1b\u901a\u9053\u4e8c\u7eff\u8272\uff0c\u8f93\u51fa\u7535\u538b\u7eb9\u6ce2\uff1b\u901a\u9053\u4e09\u84dd\u8272\uff0c\u8f93\u51fa\u7535\u6d41\u7eb9\u6ce2 <\/span><\/p>\n

\n\t\t\t\"4.png\"<\/p>\n<\/p><\/div>\n<\/div>\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

\u65b9\u6848\u4ecb\u7ecd LED \u7167\u660e\u8f83\u5176\u4ed6\u7167\u660e\u4ea7\u54c1\u5177\u6709\u7eff\u8272\u3001\u8282\u80fd\u3001\u73af\u4fdd\u3001\u957f\u5bff\u547d\u7b49\u4f18\u70b9\uff0c\u968f\u7740\u6574\u4f53\u6210\u672c\u964d\u4f4e\uff0cLED \u7167\u660e\u5f00\u59cb\u5e7f\u6cdb\u4f7f\u7528\u5728\u5546\u4e1a\u3001\u5bb6\u5ead\u7b49\u9886\u57df\u3002\u800c\u667a\u80fd\u578b LED \u7167\u660e\u72ec\u6709\u7684\u7279\u70b9\u9002\u7528\u4e8e\u4e0d\u540c\u7684\u5e94<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[],"_links":{"self":[{"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/posts\/1099"}],"collection":[{"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1099"}],"version-history":[{"count":0,"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/posts\/1099\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1099"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1099"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1099"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}