{"id":1302,"date":"2018-11-08T14:34:05","date_gmt":"2018-11-08T14:34:05","guid":{"rendered":""},"modified":"2018-11-08T22:31:12","modified_gmt":"2018-11-08T14:31:12","slug":"%e5%bc%80%e5%85%b3%e7%94%b5%e6%ba%90%e8%8a%af%e7%89%8718w%e7%9b%b4%e6%b5%81%e8%bd%ac%e6%8d%a2%e8%8a%af%e7%89%87pn8161","status":"publish","type":"post","link":"http:\/\/www.szryc.com\/?p=1302","title":{"rendered":"\u5f00\u5173\u7535\u6e90\u82af\u724718W\u76f4\u6d41\u8f6c\u6362\u82af\u7247PN8161"},"content":{"rendered":"

PN8161\u9ad8\u6027\u80fd\u51c6\u8c10\u632f\u4ea4\u76f4\u6d41\u8f6c\u6362<\/span>\u82af\u7247\u5185\u90e8\u96c6\u6210\u4e86\u51c6\u8c10\u632f\u5de5\u4f5c\u7684\u7535\u6d41\u6a21\u5f0f\u63a7\u5236\u5668\u548c\u529f\u7387MOSFET\uff0c\u4e13\u7528\u4e8e\u9ad8\u6027\u80fd\u3001\u5916\u56f4<\/span>\u5143\u5668\u4ef6\u7cbe\u7b80\u7684\u4ea4\u76f4\u6d41\u8f6c\u6362\u5f00\u5173<\/span>\u7535\u6e90\u3002\u8be5\u82af\u7247\u63d0\u4f9b\u4e86\u6781\u4e3a\u5168\u9762\u548c\u6027\u80fd\u4f18\u5f02\u7684\u667a\u80fd\u5316\u4fdd\u62a4\u529f\u80fd\uff0c\u5305\u62ec\u8f93\u51fa\u8fc7\u538b\u4fdd\u62a4\u3001\u5468\u671f\u5f0f\u8fc7\u6d41\u4fdd\u62a4\u3001\u8fc7\u8f7d\u4fdd\u62a4\u3001\u8f6f\u542f\u52a8\u529f\u80fd\uff0c\u4e0b\u9762\u8ddf\u968f\u82af\u670b\u5fae\u4e00\u7ea7\u4ee3\u7406\u9a8a\u5fae<\/span>\u7535\u5b50\u5c0f\u7f16\u4e00\u8d77\u6765\u770b\u770b\u3002<\/span>

\n

\nPN8161\u529f\u80fd\u63cf\u8ff0:<\/span>

\n1. \u542f\u52a8\uff1a<\/span>

\n\u5728\u542f\u52a8\u9636\u6bb5\uff0c\u5185\u90e8\u9ad8\u538b\u542f\u52a8\u7ba1\u63d0\u4f9b1mA\u7535\u6d41\u5bf9\u5916\u90e8V DD \u7535\u5bb9\u8fdb\u884c\u5145\u7535\u3002\u5f53V DD \u7535\u538b\u8fbe\u5230 VDDon \uff0c\u82af\u7247\u5f00\u59cb\u5de5\u4f5c\uff1b\u9ad8\u538b\u542f\u52a8\u7ba1\u505c\u6b62\u5bf9V DD \u7535\u5bb9\u5145\u7535\u3002\u542f\u52a8\u8fc7\u7a0b\u7ed3\u675f\u540e\uff0c\u53d8\u538b\u5668\u8f85\u52a9\u7ed5\u7ec4\u5bf9V DD \u7535\u5bb9\u63d0\u4f9b\u80fd\u91cf\u3002<\/span>

\n

\n2. \u8f6f\u542f\u52a8<\/span>

\n\u542f\u52a8\u9636\u6bb5\uff0c\u6f0f\u6781\u7684\u6700\u5927\u5cf0\u503c\u7535\u6d41\u9650\u5236\u9010\u6b65\u7684\u63d0\u9ad8\uff1b\u53ef\u4ee5\u5927\u5927\u51cf\u5c0f\u5668\u4ef6\u7684\u5e94\u529b\uff0c\u9632\u6b62\u53d8\u538b\u5668\u9971\u548c\u3002\u8f6f\u542f\u52a8\u65f6\u95f4\u5178\u578b\u503c\u4e3a3.2ms\u3002<\/span>

\n

\n3. \u8f93\u51fa\u9a71\u52a8<\/span>

\nPN8161\u91c7\u7528\u4f18\u5316\u7684\u56fe\u817e\u67f1\u7ed3\u6784\u9a71\u52a8\u6280\u672f\uff0c\u901a\u8fc7\u5408\u7406\u7684\u8f93\u51fa\u9a71\u52a8\u80fd\u529b\u4ee5\u53ca\u6b7b\u533a\u65f6\u95f4\uff0c\u5f97\u5230\u8f83\u597d\u7684EMI\u7279\u6027\u548c\u8f83\u4f4e\u635f\u8017\u3002<\/span>

\n

\n4. \u8c37\u5e95\u5f00\u901a<\/span>

\nPN8161\u662f\u4e00\u6b3e\u5de5\u4f5c\u4e8e\u51c6\u8c10\u632f\u6a21\u5f0f\u7684\u96c6\u6210\u82af\u7247\uff0c\u901a\u8fc7DMG\u68c0\u6d4b\u5230\u7684\u6d88\u78c1\u4fe1\u53f7\u5b9e\u73b0\u7cbe\u786e\u8c37\u5e95\u5f00<\/span>

\n\u901a\uff0c\u4ee5\u63d0\u9ad8\u7cfb\u7edf\u7684\u8f6c\u6362\u6548\u7387\u3002\u5728PWM\u6a21\u5f0f\uff0c\u7531\u7b2c\u4e00\u8c37\u5e95\u4ea7\u751f\u5f00\u542f\u4fe1\u53f7\uff0c\u5de5\u4f5c\u9891\u7387\u7531\u7cfb\u7edf\u8bbe\u8ba1\u7684\u53d8\u538b\u5668\u53c2\u6570\u51b3\u5b9a\uff0c\u6700\u9ad8\u5de5\u4f5c\u9891\u7387\u9650\u5236\u5728125kHz\u3002<\/span>

\n

\n5. \u964d\u9891\u5de5\u4f5c\u6a21\u5f0f<\/span>

\nPN8161\u63d0\u4f9b\u964d\u9891\u5de5\u4f5c\u6a21\u5f0f\uff0c\u901a\u8fc7\u68c0\u6d4bFB\u811a\u7535\u538b\uff0c\u5728\u8f7b\u8f7d\u548c\u7a7a\u8f7d\u6761\u4ef6\u4e0b\u964d\u4f4e\u5f00\u5173\u9891\u7387\u4ee5\u63d0\u9ad8\u8f7b\u8f7d\u6548\u7387\u3002\u5f53FB\u811a\u7535\u538b\u5c0f\u4e8e V FB_PFM \uff0c\u82af\u7247\u8fdb\u5165\u964d\u9891\u5de5\u4f5c\u6a21\u5f0f\uff0c\u5f00\u5173\u9891\u7387\u968f\u8d1f\u8f7d\u964d\u4f4e\u800c\u964d\u4f4e\uff0c\u76f4\u81f3\u6700\u5c0f\u9891\u738725kHz\u3002<\/span>

\n

\n6. \u95f4\u6b47\u5de5\u4f5c\u6a21\u5f0f<\/span>

\n\u6781\u8f7b\u8f7d\u65f6\uff0cPN8161\u8fdb\u5165\u95f4\u9699\u5de5\u4f5c\u6a21\u5f0f\u4ee5\u51cf\u5c0f\u5f85\u673a\u529f\u8017\u3002\u5f53\u8d1f\u8f7d\u51cf\u8f7b\uff0c\u53cd\u9988\u7535\u538b\u51cf\u5c0f\uff1b\u5f53FB\u811a\u7535\u538b\u5c0f\u4e8e V FB_BM \uff0c\u82af\u7247\u8fdb\u5165\u95f4\u6b47\u5de5\u4f5c\u6a21\u5f0f\uff0c\u529f\u7387\u7ba1\u5173\u65ad\u3002\u5f53FB\u811a\u8d85\u8fc7 V FB_BM +V FB_BM_HYS \u65f6\uff0c\u5f00\u5173\u7ba1\u518d\u6b21\u5bfc\u901a\u3002<\/span>

\n

\n7. \u8fc7\u8f7d\u4fdd\u62a4<\/span>

\n\u8d1f\u8f7d\u7535\u6d41\u8d85\u8fc7\u9884\u8bbe\u5b9a\u503c\u65f6\uff0c\u7cfb\u7edf\u4f1a\u8fdb\u5165\u8fc7\u8f7d\u4fdd\u62a4\uff1b\u5728\u5f02\u5e38\u60c5\u51b5\u4e0b\uff0c\u53ef\u5bf9\u7cfb\u7edf\u8fdb\u884c\u4fdd\u62a4\u3002\u5f53V FB \u7535\u538b\u8d85\u8fc74.4V\uff0c\u7ecf\u8fc7\u56fa\u5b9a60ms\u7684\u5ef6\u8fdf\u65f6\u95f4\uff0c\u5f00\u5173\u6a21\u5f0f\u505c\u6b62\u3002<\/span>

\n

\n8. \u8fc7\u6e29\u4fdd\u62a4<\/span>

\n\u529f\u7387MOSFET\u548c\u63a7\u5236\u82af\u7247\u96c6\u6210\u5728\u4e00\u8d77\uff0c\u4f7f\u5f97\u63a7\u5236<\/span>\u7535\u8def\u66f4\u6613\u4e8e\u68c0\u6d4bMOSFET\u7684\u6e29\u5ea6\u3002\u5f53\u6e29\u5ea6\u8d85<\/span>

\n145\u2103\uff0c\u82af\u7247\u8fdb\u5165\u8fc7\u6e29\u4fdd\u62a4\u72b6\u6001\u3002<\/span>

\n

\nPN8161\u901a\u8fc7QR-PWM\u3001QR-PFM\u3001Burst-mode\u7684\u4e09\u79cd\u6a21\u5f0f\u6df7\u5408\u8c03\u5236\u6280\u672f\u548c\u7279\u6b8a\u5668\u4ef6\u4f4e\u529f\u8017\u7ed3\u6784\u6280\u672f\u5b9e\u73b0\u4e86\u8d85\u4f4e\u7684\u5f85\u673a\u529f\u8017\u3001\u5168\u7535\u538b\u8303\u56f4\u4e0b\u7684\u6700\u4f73\u6548\u7387\u3002\u9891\u7387\u8c03\u5236\u6280\u672f\u548cSoftDriver\u6280\u672f\u5145\u5206\u4fdd\u8bc1\u826f\u597d\u7684EMI\u8868\u73b0\uff0c\u9a8a\u5fae\u7535\u5b50\u4ee3\u7406\u7684PN8161\u5e7f\u6cdb\u88ab\u5e94\u7528\u4e8e\u5145\u7535\u5668\u3001\u9002\u914d\u5668\u3001\u5f00\u653e\u5f0f\u5f00\u5173\u7535\u6e90\u7b49\u9886\u57df\u3002<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

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