{"id":95842,"date":"2026-08-26T23:56:37","date_gmt":"2026-08-26T15:56:37","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/95842.html"},"modified":"2026-08-26T23:56:37","modified_gmt":"2026-08-26T15:56:37","slug":"eg1262%ef%bd%9c%e5%ae%bd%e7%94%b5%e5%8e%8b%e7%94%b5%e6%b5%81%e6%a8%a1%e5%bc%8f-pwm-%e6%8e%a7%e5%88%b6%e5%99%a8%ef%bc%8c%e6%ad%a3%e6%bf%80%e4%bc%98%e9%80%89%e5%9b%bd%e4%ba%a7%e4%b8%bb%e6%8e%a7","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/95842.html","title":{"rendered":"EG1262\uff5c\u5bbd\u7535\u538b\u7535\u6d41\u6a21\u5f0f PWM \u63a7\u5236\u5668\uff0c\u6b63\u6fc0\u4f18\u9009\u56fd\u4ea7\u4e3b\u63a7"},"content":{"rendered":"<p>\u505a\u4e2d\u5927\u529f\u7387\u6b63\u6fc0&#xff08;\u53ef\u517c\u5bb9\u53cd\u6fc0&#xff09;\u9694\u79bb\u7535\u6e90&#xff0c;\u9700\u8981VCC \u5bbd\u8010\u538b\u3001BO \u6bcd\u7ebf\u6b20\u538b\u3001RT \u5916\u7f6e NTC \u6d4b\u6e29\u3001MOS \u6805\u6781\u94b3\u4f4d\u3001\u6296\u9891\u6539\u5584 EMI&#xff0c;\u5c79\u6676\u5fae\u7535\u5b50EG1262\u5916\u7f6e MOS \u7535\u6d41\u2011mode PWM \u63a7\u5236\u5668&#xff0c;SOP\u20118 \u8d34\u7247\u5c01\u88c5&#xff0c;\u6700\u5927\u5360\u7a7a\u6bd4 50%&#xff0c;\u975e\u5e38\u9002\u914d\u53cc\u7ba1\u6b63\u6fc0\u62d3\u6251\u78c1\u590d\u4f4d\u8981\u6c42&#xff0c;\u53ef\u642d\u914d EG12521 \u9a71\u52a8\u82af\u7247\u5b9e\u73b0\u5b8c\u6574\u53cc\u7ba1\u6b63\u6fc0\u65b9\u6848&#xff0c;\u5e7f\u6cdb\u7528\u4e8e LED \u663e\u793a\u5c4f\u7535\u6e90\u3001\u9502\u7535 \/ \u94c5\u9178\u7535\u6c60\u5145\u7535\u5668\u3001\u5de5\u4e1a\u9002\u914d\u5668\u3001\u7535\u673a\u9a71\u52a8\u7535\u6e90<\/p>\n<p>\u540c\u7cfb\u5217\u5bf9\u6bd4\u63d0\u793a&#xff1a; EG1262 \u76f8\u6bd4 EG1252 \u7cfb\u5217&#xff0c;\u53d6\u6d88\u7eff\u8272 \/ \u6253\u55dd\u95f4\u6b47\u6a21\u5f0f&#xff1b;\u5f3a\u5316 VCC \u8010\u538b\u6700\u9ad8 38V&#xff1b;OUT \u9a71\u52a8\u5f15\u811a\u5185\u7f6e 18V \u6805\u6781\u94b3\u4f4d&#xff0c;\u4fdd\u62a4 MOS \u6805\u6781&#xff0c;\u9002\u5408\u8f85\u52a9\u7ed5\u7ec4\u7535\u538b\u6ce2\u52a8\u504f\u5927\u7684\u6b63\u6fc0\u5e94\u7528&#xff1b;\u4fdd\u7559 BO \u6bcd\u7ebf\u6b20\u538b\u3001RT NTC \u6e29\u5ea6\u4fdd\u62a4\u3001\u9891\u7387\u6296\u52a8<\/p>\n<p>EG1262 \u4e3a\u5cf0\u503c\u7535\u6d41\u6a21\u5f0f\u67b6\u6784&#xff0c;RI \u5f15\u811a\u5916\u63a5\u7535\u963b\u8bbe\u5b9a\u5f00\u5173\u9891\u7387&#xff1b;\u5185\u7f6e \u00b14% \u9891\u7387\u6296\u52a8\u4f18\u5316 EMI&#xff1b;BO \u5f15\u811a\u505a\u8f93\u5165\u6bcd\u7ebf\u6b20\u538b\u68c0\u6d4b&#xff0c;RT \u5f15\u811a\u5916\u63a5 NTC \u5b9e\u73b0\u6574\u673a\u8fc7\u6e29\u4fdd\u62a4&#xff1b;\u5177\u5907\u5149\u8026\u5f00\u8def\u4fdd\u62a4&#xff1b;OUT \u5f15\u811a\u5185\u7f6e 18V \u6805\u6781\u7535\u538b\u94b3\u4f4d&#xff0c;\u89c4\u907f VCC \u5f02\u5e38\u9ad8\u538b\u51fb\u7a7f MOS \u7ba1 GS&#xff1b;\u5185\u7f6e 80ns \u524d\u6cbf\u6d88\u9690\u3001\u9010\u5468\u671f\u9650\u6d41\u3001\u8f6f\u542f\u52a8\u3001VCC \u6b20\u538b UVLO\u3001VCC \u8fc7\u538b VOP\u3001\u8fc7\u8f7d\u5168\u5957\u4fdd\u62a4<\/p>\n<p>\u4e00\u3001\u6838\u5fc3\u4ea7\u54c1\u4eae\u70b9&#xff0c;\u89e3\u51b3\u91cf\u4ea7\u5b9e\u9645\u75db\u70b9<\/p>\n<p>1.\u7535\u6d41\u6a21\u5f0f\u67b6\u6784&#xff0c;\u6b63\u53cd\u6fc0\u517c\u5bb9&#xff0c;\u4e13\u4e3a\u6b63\u6fc0\u4f18\u5316<\/p>\n<p>\u6b63\u5b97\u7535\u6d41\u6a21\u5f0f\u63a7\u5236&#xff0c;\u8d1f\u8f7d\u8df3\u53d8\u52a8\u6001\u54cd\u5e94\u5feb&#xff1b;\u6700\u5927\u5360\u7a7a\u6bd4\u9650\u5236 50%&#xff0c;\u6ee1\u8db3\u6b63\u6fc0\u78c1\u590d\u4f4d\u786c\u6027\u6761\u4ef6&#xff1b;RI \u7535\u963b\u5916\u90e8\u8bbe\u5b9a\u5de5\u4f5c\u9891\u7387&#xff1b;\u5185\u7f6e\u9891\u7387\u6296\u52a8&#xff0c;\u5206\u6563\u5f00\u5173\u566a\u58f0&#xff0c;\u964d\u4f4e EMI \u6574\u6539\u96be\u5ea6&#xff1b;VCC \u6700\u9ad8\u8010\u538b 38V&#xff0c;\u9488\u5bf9\u6b63\u6fc0\u8f85\u52a9\u7535\u538b\u6ce2\u52a8\u5927\u7684\u5de5\u51b5\u505a\u4f18\u5316<\/p>\n<p>2.\u591a\u91cd\u786c\u6838\u9632\u62a4&#xff0c;\u9002\u914d\u5de5\u4e1a\u4e25\u82db\u5de5\u51b5<\/p>\n<p>**- RT \u5f15\u811a\u5916\u7f6e NTC \u8fc7\u6e29\u4fdd\u62a4&#xff1a;**\u5916\u63a5 NTC \u70ed\u654f\u7535\u963b&#xff0c;\u76d1\u6d4b\u53d8\u538b\u5668\u3001\u673a\u58f3\u5185\u90e8\u6e29\u5ea6&#xff0c;\u5bc6\u95ed\u704c\u5c01\u7535\u6e90\u9ad8\u6e29\u81ea\u52a8\u5173\u65ad<\/p>\n<p>**- BO \u5f15\u811a\u6bcd\u7ebf\u6b20\u538b\u4fdd\u62a4&#xff1a;**\u68c0\u6d4b\u6574\u6d41\u540e\u6bcd\u7ebf\u7535\u538b&#xff0c;\u7535\u7f51\u8dcc\u843d\u65f6\u9501\u5b58\u8f93\u51fa&#xff0c;\u907f\u514d\u4f4e\u538b\u5de5\u51b5\u529f\u7387\u5668\u4ef6\u8fc7\u8f7d\u635f\u574f<\/p>\n<p>**- OUT \u6805\u6781 18V \u94b3\u4f4d\u4fdd\u62a4&#xff1a;**\u5f53 VCC \u7535\u538b\u5f02\u5e38\u5347\u9ad8&#xff0c;\u9a71\u52a8\u8f93\u51fa\u6700\u9ad8\u94b3\u4f4d 18V&#xff0c;\u4fdd\u62a4\u5916\u7f6e MOS \u6805\u6781&#xff0c;\u63d0\u5347\u6b63\u6fc0\u65b9\u6848\u53ef\u9760\u6027<\/p>\n<p>**- \u5149\u8026\u5f00\u8def\u4fdd\u62a4&#xff1a;**\u5149\u8026\u865a\u710a\u3001\u635f\u574f\u5f00\u8def&#xff0c;\u82af\u7247\u89e6\u53d1\u4fdd\u62a4&#xff0c;\u9632\u6b62\u8f93\u51fa\u8fc7\u538b\u70e7\u6bc1\u7535\u6c60\u4e0e\u8d1f\u8f7d<\/p>\n<p>80ns \u524d\u6cbf\u6d88\u9690\u5c4f\u853d\u5f00\u5173\u5c16\u5cf0&#xff1b;\u9010\u5468\u671f OCP \u9650\u6d41\u3001VCC \u8fc7\u538b \/ \u6b20\u538b\u3001\u8fc7\u8f7d\u4fdd\u62a4\u5168\u90e8\u5185<\/p>\n<p>3.\u8d85\u4f4e\u542f\u52a8\u7535\u6d41&#xff0c;\u5916\u56f4\u7cbe\u7b80<\/p>\n<p>\u5178\u578b\u542f\u52a8\u7535\u6d41\u4ec5 6\u03bcA&#xff0c;\u652f\u6301\u9009\u7528\u5927\u963b\u503c\u542f\u52a8\u7535\u963b&#xff0c;\u964d\u4f4e\u542f\u52a8\u7535\u963b\u529f\u8017\u53d1\u70ed&#xff1b;SOP\u20118 \u8d34\u7247&#xff0c;\u5916\u56f4\u5143\u5668\u4ef6\u5c11&#xff0c;\u5e03\u677f\u7b80\u5355<\/p>\n<p>4.\u53cc\u7ba1\u6b63\u6fc0\u6210\u719f\u914d\u5957\u65b9\u6848<\/p>\n<p>EG1262 \u505a\u539f\u8fb9 PWM \u4e3b\u63a7&#xff0c;\u642d\u914d EG12521 \u534a\u6865\u9a71\u52a8\u82af\u7247&#xff0c;\u76f4\u63a5\u642d\u5efa\u53cc\u7ba1\u6b63\u6fc0&#xff1b;\u526f\u8fb9\u53ef\u642d\u914d EG4313\/EG4321 \u5b9e\u73b0 CV\u2011CC \u6052\u538b\u6052\u6d41\u5145\u7535&#xff0c;\u6574\u5957\u56fd\u4ea7\u65b9\u6848&#xff0c;\u51cf\u5c11\u7269\u6599 SKU<\/p>\n<p>\u4e8c\u3001\u6210\u719f\u843d\u5730\u5e94\u7528\u6848\u4f8b\u53c2\u8003<\/p>\n<p>\u9694\u79bb\u7535\u6e90\u642d\u914d\u5149\u8026 &#043; TL431\/EG4313 \u526f\u8fb9\u53cd\u9988&#xff1b;\u53cc\u7ba1\u6b63\u6fc0\u9700\u642d\u914d EG12521 \u9a71\u52a8\u82af\u7247<\/p>\n<p>\u6848\u4f8b\u4e00&#xff1a;12V7A 84W \u53cc\u7ba1\u6b63\u6fc0 LED \u663e\u793a\u5c4f\u7535\u6e90&#xff08;EG1262&#043;EG12521&#xff09;<\/p>\n<p>&#8211; \u8f93\u51fa\u89c4\u683c&#xff1a; 12V\/7A<\/p>\n<p>**- \u4ea7\u54c1\u7528\u9014&#xff1a;**\u6237\u5916 LED \u5e7f\u544a\u5c4f\u4f9b\u7535\u7535\u6e90<\/p>\n<p>**- \u89e3\u51b3\u75db\u70b9&#xff1a;**\u6700\u5927 50% \u5360\u7a7a\u6bd4\u4fdd\u969c\u6b63\u6fc0\u78c1\u590d\u4f4d&#xff1b;BO \u6bcd\u7ebf\u6b20\u538b\u62b5\u5fa1\u7535\u7f51\u6ce2\u52a8&#xff1b;NTC \u6574\u673a\u6e29\u5ea6\u4fdd\u62a4&#xff1b;\u6805\u6781\u94b3\u4f4d\u62b5\u5fa1\u8f85\u52a9\u7535\u538b\u51b2\u51fb&#xff1b;\u6296\u9891\u52a9\u529b EMI \u5b89\u89c4\u6d4b\u8bd5<\/p>\n<p>\u6848\u4f8b\u4e8c&#xff1a;24V5A 120W \u94c5\u9178\u7535\u6c60\u5145\u7535\u673a<\/p>\n<p>&#8211; \u8f93\u51fa\u89c4\u683c&#xff1a; 24V\/5A \u94c5\u9178\u5145\u7535<\/p>\n<p>**- \u4ea7\u54c1\u7528\u9014&#xff1a;**\u50a8\u80fd\u5c0f\u7535\u74f6\u5145\u7535\u673a<\/p>\n<p>**- \u65b9\u6848\u4f18\u52bf&#xff1a;**\u642d\u914d EG4321 \u5b9e\u73b0\u5b8c\u6574 CC\u2011CV \u5145\u7535\u66f2\u7ebf&#xff1b;\u6bcd\u7ebf\u6b20\u538b\u4fdd\u62a4&#xff0c;\u7535\u7f51\u7535\u538b\u504f\u4f4e\u7981\u6b62\u5145\u7535&#xff1b;\u5149\u8026\u5f00\u8def\u4fdd\u62a4&#xff0c;\u907f\u514d\u5931\u63a7\u8fc7\u5145<\/p>\n<p>\u6848\u4f8b\u4e09&#xff1a;36V3A 108V \u5de5\u4e1a\u7535\u673a\u9a71\u52a8\u7535\u6e90<\/p>\n<p>&#8211; \u8f93\u51fa\u89c4\u683c&#xff1a; 36V\/3A<\/p>\n<p>**- \u4ea7\u54c1\u7528\u9014&#xff1a;**\u5de5\u4e1a\u6c34\u6cf5\u3001\u76f4\u6d41\u9a6c\u8fbe\u9694\u79bb\u4f9b\u7535<\/p>\n<p>**- \u5de5\u51b5&#xff1a;**\u7535\u673a\u542f\u505c\u51b2\u51fb\u7535\u6d41\u5927&#xff0c;\u8f85\u52a9\u7ed5\u7ec4\u7535\u538b\u6ce2\u52a8\u3002<\/p>\n<p>**- \u65b9\u6848\u7279\u70b9&#xff1a;**\u7535\u6d41\u6a21\u5f0f\u5feb\u901f\u54cd\u5e94\u8d1f\u8f7d\u7a81\u53d8&#xff1b;OUT \u6805\u6781\u94b3\u4f4d&#xff0c;\u4fdd\u62a4 MOS \u4e0d\u53d7 VCC \u6d6a\u6d8c\u635f\u574f&#xff1b;\u9010\u5468\u671f\u9650\u6d41\u6291\u5236\u542f\u52a8\u51b2\u51fb<\/p>\n<p>\u6848\u4f8b\u56db&#xff1a;48V2A 96W \u5de5\u4e1a\u9002\u914d\u5668<\/p>\n<p>&#8211; \u8f93\u51fa\u89c4\u683c&#xff1a; 48V\/2A \u5de5\u4e1a\u8bbe\u5907\u4f9b\u7535<\/p>\n<p>**- \u5e94\u7528&#xff1a;**\u5de5\u63a7\u5916\u8bbe\u4f9b\u7535\u7535\u6e90<\/p>\n<p>**- \u65b9\u6848\u6536\u76ca&#xff1a;**\u5bbd VCC \u8010\u538b&#xff0c;\u9002\u914d\u8f85\u52a9\u7535\u538b\u6ce2\u52a8&#xff1b;\u5168\u5957\u5185\u7f6e\u4fdd\u62a4&#xff0c;\u63d0\u5347\u6574\u673a\u76f4\u901a\u7387&#xff1b;SOP\u20118 \u8d34\u7247\u9002\u914d SMT \u81ea\u52a8\u5316\u4ea7\u7ebf<\/p>\n<p>\u4e09\u3001\u5173\u952e\u7535\u6c14\u53c2\u6570\u901f\u89c8<\/p>\n<p>&#8211; \u632f\u8361\u9891\u7387&#xff1a; RI \u7535\u963b\u5916\u90e8\u8bbe\u5b9a&#xff0c;\u5178\u578b 75kHz&#xff0c;\u5e26 \u00b14% \u9891\u7387\u6296\u52a8&#xff1b;\u6700\u5927\u5360\u7a7a\u6bd4 50%<\/p>\n<ul>\n<li>\u542f\u52a8\u7535\u6d41\u5178\u578b 6\u03bcA&#xff0c;\u5de5\u4f5c\u7535\u6d41\u5178\u578b 2.3mA&#xff1b;VCC \u8010\u538b\u6700\u9ad8 38V<\/li>\n<\/ul>\n<p>**- BO&#xff1a;**\u8f93\u5165\u6bcd\u7ebf\u6b20\u538b\u68c0\u6d4b&#xff1b;RT&#xff1a;NTC \u6574\u673a\u8fc7\u6e29\u4fdd\u62a4&#xff1b;\u5177\u5907\u5149\u8026\u5f00\u8def\u4fdd\u62a4<\/p>\n<ul>\n<li>\n<p>OUT \u9a71\u52a8\u5185\u7f6e 18V \u6805\u6781\u94b3\u4f4d&#xff1b;\u5185\u7f6e 80ns 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