{"id":7062,"date":"2020-04-22T00:00:43","date_gmt":"2020-04-21T15:00:43","guid":{"rendered":"https:\/\/techclass.rohm.com.cn\/?p=7062"},"modified":"2026-03-25T17:20:05","modified_gmt":"2026-03-25T09:20:05","slug":"%e9%87%87%e7%94%a84%e5%bc%95%e8%84%9a%e5%b0%81%e8%a3%85%e7%9a%84%e5%8e%9f%e5%9b%a0","status":"publish","type":"post","link":"https:\/\/techclass.rohm.com.cn\/tech-info\/engineer\/8836","title":{"rendered":"\u91c7\u75284\u5f15\u811a\u5c01\u88c5\u7684\u539f\u56e0"},"content":{"rendered":"

ROHM\u6700\u8fd1\u63a8\u51fa\u4e86SiC MOSFET\u7684\u65b0\u7cfb\u5217\u4ea7\u54c1\u201cSCT3xxx xR\u7cfb\u5217\u201d\u3002SCT3xxx xR<\/a>\u7cfb\u5217\u91c7\u7528\u6700\u65b0\u7684\u6c9f\u69fd\u6805\u6781\u7ed3\u6784\uff0c\u8fdb\u4e00\u6b65\u964d\u4f4e\u4e86\u5bfc\u901a\u7535\u963b\uff1b\u540c\u65f6\u901a\u8fc7\u91c7\u7528\u5355\u72ec\u8bbe\u7f6e\u6805\u6781\u9a71\u52a8\u5668\u7528\u6e90\u6781\u5f15\u811a\u76844\u5f15\u811a\u5c01\u88c5\uff0c\u6539\u5584\u4e86\u5f00\u5173\u7279\u6027\uff0c\u4f7f\u5f00\u5173\u635f\u8017\u53ef\u4ee5\u964d\u4f4e35%\u5de6\u53f3\u3002\u6b64\u6b21\uff0c\u9488\u5bf9SiC MOSFET\u91c7\u75284\u5f15\u811a\u5c01\u88c5\u7684\u539f\u56e0\u53ca\u5176\u6548\u679c\u7b49\u8bae\u9898\uff0c\u6211\u4eec\u91c7\u8bbf\u4e86ROHM\u682a\u5f0f\u4f1a\u793e\u7684\u5e94\u7528\u5de5\u7a0b\u5e08\u3002<\/p>\n

\uff0d\u5173\u4e8eSiC MOSFET\u7684SCT3xxx xR\u7cfb\u5217\uff0c\u9664\u4e86\u5bfc\u901a\u7535\u963b\u5f88\u4f4e\uff0c\u8fd8\u901a\u8fc7\u91c7\u75284\u5f15\u811a\u5c01\u88c5\u4f7f\u5f00\u5173\u635f\u8017\u964d\u4f4e\u4e8635%\uff0c\u5bf9\u6b64\u6211\u4eec\u975e\u5e38\u611f\u5174\u8da3\u3002\u6b64\u6b21\uff0c\u60f3\u8bf7\u60a8\u4ee54\u5f15\u811a\u5c01\u88c5\u4e3a\u91cd\u70b9\u4ecb\u7ecd\u4e00\u4e0b\u8be5\u4ea7\u54c1\u3002<\/p>\n

\uff0d\u9996\u5148\uff0c\u8bf7\u60a8\u5927\u81f4\u8bb2\u4e00\u4e0b4\u5f15\u811a\u5c01\u88c5\u5177\u4f53\u662f\u600e\u6837\u7684\u5c01\u88c5\uff0c\u91c7\u7528\u8fd9\u79cd\u5c01\u88c5\u7684\u80cc\u666f\u548c\u76ee\u7684\u662f\u4ec0\u4e48\u3002<\/p>\n

\u9996\u5148\uff0c\u91c7\u75284\u5f15\u811a\u5c01\u88c5<\/em>\u662f\u4e3a\u4e86\u6539\u5584<\/em>SiC MOSFET\u7684\u5f00\u5173\u635f\u8017<\/strong>\u3002\u5305\u62ecSiC MOSFET\u5728\u5185\u7684\u7535\u6e90\u5f00\u5173\u7528MOSFET\u548cIGBT\uff0c\u88ab\u4f5c\u4e3a\u5f00\u5173\u5143\u4ef6\u5e7f\u6cdb\u5e94\u7528\u4e8e\u5404\u79cd\u7535\u6e90\u5e94\u7528\u548c\u7535\u6e90\u7ebf\u8def\u4e2d\u3002\u5fc5\u987b\u5c3d\u53ef\u80fd\u5730\u964d\u4f4e\u8fd9\u79cd\u5f00\u5173\u5143\u4ef6\u4ea7\u751f\u7684\u5f00\u5173\u635f\u8017\u548c\u4f20\u5bfc\u635f\u8017\uff0c\u4f46\u4e0d\u540c\u7684\u5e94\u7528\uff0c\u5176\u964d\u4f4e\u635f\u8017\u7684\u65b9\u6cd5\u4e5f\u4e0d\u5c3d\u76f8\u540c\u3002\u4f5c\u4e3a\u5176\u4e2d\u7684\u4e00\u79cd\u624b\u6cd5\uff0c\u8fd1\u5e74\u6765\u53d1\u5e03\u4e86\u4e00\u79cd4\u5f15\u811a\u7684\u65b0\u578b\u5c01\u88c5\uff0c\u5373\u5728MOSFET\u7684\u6e90\u6781\u3001\u6f0f\u6781\u3001\u6805\u6781\u4e09\u4e2a\u5f15\u811a\u4e4b\u5916\uff0c\u53e6\u5916\u8bbe\u7f6e\u4e86\u9a71\u52a8\u5668\u6e90\u6781\u5f15\u811a<\/em>\u3002\u6b64\u6b21\u7684SCT3xxx xR\u7cfb\u5217<\/strong>\uff0c\u65e8\u5728\u901a\u8fc7\u91c7\u7528\u6700\u65b0\u7684\u6c9f\u69fd\u6805\u6781\u7ed3\u6784\uff0c\u5b9e\u73b0\u66f4\u4f4e\u7684\u5bfc\u901a\u7535\u963b\u548c\u4f20\u5bfc\u635f\u8017\uff1b\u901a\u8fc7\u91c7\u75284\u5f15\u811a\u5c01\u88c5\uff0c\u8fdb\u4e00\u6b65\u53d1\u6325\u51faSiC\u672c\u8eab\u5177\u6709\u7684\u9ad8\u901f\u5f00\u5173\u6027\u80fd\uff0c\u5e76\u964d\u4f4e\u5f00\u5173\u635f\u8017\u3002<\/p>\n

\uff0d\u90a3\u4e48\uff0c\u6211\u60f3\u8be6\u7ec6\u4e86\u89e3\u4e00\u4e0b\u521a\u521a\u60a8\u7684\u6982\u8ff0\u4e2d\u51fa\u73b0\u7684\u51e0\u4e2a\u8981\u70b9\u3002\u9996\u5148\uff0c\u4ec0\u4e48\u662f\u201c\u9a71\u52a8\u5668\u6e90\u6781\u5f15\u811a\u201d\uff1f<\/p>\n

\u9a71\u52a8\u5668\u6e90\u6781\u5f15\u811a\u662f\u5e94\u7528\u4e86\u5f00\u5c14\u6587\u8fde\u63a5<\/em>\u539f\u7406\u7684\u6e90\u6781\u5f15\u811a\u3002\u5f00\u5c14\u6587\u8fde\u63a5\u662f\u901a\u8fc7\u7535\u963b\u6d4b\u91cf\u4e2d\u76844\u4e2a\u5f15\u811a\u6216\u56db\u7ebf\u68c0\u6d4b\u65b9\u5f0f\uff0c\u5728\u7535\u6d41\u8def\u5f84\u57fa\u7840\u4e0a\u52a0\u4e0a\u4e24\u6761\u6d4b\u91cf\u7535\u538b\u7684\u7ebf\u8def\uff0c\u4ee5\u6781\u529b\u6d88\u9664\u5fae\u5c0f\u7535\u963b\u6d4b\u91cf\u6216\u5927\u7535\u6d41\u6761\u4ef6\u4e0b\u6d4b\u91cf\u65f6\u4e0d\u53ef\u5ffd\u7565\u7684\u7ebf\u7f06\u7535\u963b\u548c\u63a5\u89e6\u7535\u963b\u7684\u5f71\u54cd\u7684\u65b9\u6cd5\uff0c\u662f\u4e00\u79cd\u5e7f\u4e3a\u4eba\u77e5\u7684\u65b9\u6cd5\u3002\u8fd9\u79cd4\u5f15\u811a\u5c01\u88c5\u4ec5\u9650\u6e90\u6781\uff0c\u901a\u8fc7\u4f7f\u8fde\u63a5\u6805\u6781\u9a71\u52a8\u7535\u8def\u8fd4\u56de\u7ebf\u7684\u6e90\u6781\u7535\u538b\u5f15\u811a\u4e0e\u6d41\u8fc7\u5927\u7535\u6d41\u7684\u7535\u6e90\u6e90\u6781\u5f15\u811a\u72ec\u7acb\uff0c\u6765\u6d88\u9664ID\u5bf9\u6805\u6781\u9a71\u52a8\u7535\u8def\u7684\u5f71\u54cd\u3002<\/p>\n

\uff0d\u4e5f\u5c31\u662f\u8bf4\u57fa\u672c\u7684\u601d\u8def\u5c31\u662f\u5f00\u5c14\u6587\u8fde\u63a5\u5bf9\u5427\u3002<\/p>\n

\u662f\u554a\uff01\u7a0d\u540e\u4f1a\u7ed9\u60a8\u770b\u5b9e\u9645\u7684\u5c01\u88c5\uff0c\u9996\u5148\u6211\u6765\u4ecb\u7ecd\u4e00\u4e0b\u9a71\u52a8\u5668\u6e90\u6781\u5f15\u811a\u5bf9\u964d\u4f4e\u5f00\u5173\u635f\u8017\u7684\u8d21\u732e\u3002<\/p>\n

MOSFET\u901a\u5e38\u4e3a\u7535\u538b\u9a71\u52a8\uff0c\u901a\u8fc7\u63a7\u5236\u6805\u6781\u5f15\u811a\u7684\u7535\u538b\u6765\u5bfc\u901a\/\u5173\u65adMOSFET\u3002Figure 1\u4e3a\u4ee5\u5f80\u76843\u5f15\u811a\u5c01\u88c5\uff08TO-247N\uff09MOSFET\u7684\u5e38\u89c4\u6805\u6781\u9a71\u52a8\u7535\u8def\u793a\u4f8b\u3002\u7ea2\u8272\u865a\u7ebf\u8868\u793aMOSFET\u5c01\u88c5\u5185\u90e8\u548c\u5916\u90e8\u7684\u8fb9\u754c\u3002<\/p>\n

\n
\n

\u901a\u5e38\uff0c\u5728\u9a71\u52a8\u7535\u6e90VG<\/sub>\u548cMOSFET\u7684\u6805\u6781\u5f15\u811a\u4e4b\u95f4\uff0c\u4f1a\u63d2\u5165\u7528\u6765\u63a7\u5236\u5f00\u5173\u901f\u5ea6\u7684\u5916\u7f6e\u6805\u6781\u7535\u963bRG_EXT<\/sub><\/em>\uff0c\u800c\u4e14\u8fd8\u5305\u542b\u5370\u5237\u7535\u8def\u677f\u7684\u5e03\u7ebf\u7535\u611fLTRACE<\/sub>\u3002\u53e6\u5916\uff0c\u5728\u6e90\u6781\u5f15\u811a\u548c\u5185\u90e8\u7684MOSFET\u82af\u7247\u4e4b\u95f4\uff0c\u5305\u542b\u5c01\u88c5\u7535\u611fLSOURCE<\/sub><\/em>\u3002<\/p>\n

\u5728\u5bc4\u751f\u5206\u91cf\u4e2d\uff0c\u6805\u6781\u5f15\u811a\u7684\u5c01\u88c5\u7535\u611f\u5305\u542b\u5728LTRACE<\/sub>\u4e2d\uff0c\u800c\u6f0f\u6781\u5f15\u811a\u7684\u5c01\u88c5\u7535\u611fLDRAIN<\/sub>\u4e0d\u5305\u542b\u5728\u6805\u6781\u9a71\u52a8\u7535\u8def\u4e2d\uff0c\u56e0\u6b64\u5728\u8fd9\u91cc\u7701\u7565\u3002<\/p>\n<\/div>\n

\"MOSFET\u68da\u6781\u9a71\u52a8\u7535\u8def\u5c55\u793a\"<\/div>\n<\/div>\n

\uff0d\u8fd9\u5c31\u6d89\u53ca\u5230MOSFET\u9a71\u52a8\u4e2d\u57fa\u672c\u7684\u6805\u6781\u7535\u963b\u548c\u5bc4\u751f\u5206\u91cf\u4e86\u5427\u3002<\/p>\n

\u662f\u7684\u3002\u4f46\u662f\uff0c\u5982\u679c\u662f\u666e\u901aIGBT\u7684\u5f00\u5173\u901f\u5ea6\u7684\u8bdd\uff0c\u53ef\u80fd\u4e0d\u4f1a\u9020\u6210\u5f88\u5927\u5f71\u54cd\uff0c\u4f46\u5728SiC MOSFET\u7684\u7279\u70b9\u4e4b\u4e00\u201c\u9ad8\u901f\u5f00\u5173\u201d\u6761\u4ef6\u4e0b\uff0c\u5f00\u5173\u7684\u6f0f\u6781-\u6e90\u6781\u95f4\u7535\u6d41ID<\/sub>\u7684\u8f6c\u6362\u548cLSOURCE<\/sub>\u5f15\u8d77\u7684\u7535\u52a8\u52bfVLSOURCE<\/sub>\u5c31\u6210\u4e86\u95ee\u9898\u3002<\/p>\n

\n
\n

\u6211\u4eec\u7528Figure 2\u6765\u66f4\u5177\u4f53\u4e00\u70b9\u8fdb\u884c\u8bf4\u660e\u3002Figure 2\u8868\u793a\u5728\u5f00\u5173\u5de5\u4f5c\u4e2d\u7684\u7535\u8def\u5185\u90e8\u7535\u538b\u60c5\u51b5\u3002<\/p>\n

\u5f53MOSFET\u88ab\u65bd\u52a0VG<\/sub>\u5e76\u5bfc\u901a\u540e\uff0cID<\/sub>\u6025\u5267\u589e\u52a0\uff0cLSOURCE<\/sub>\u4ea7\u751f\u56fe\u4e2d\u7684\u7535\u52a8\u52bfVLSOURCE<\/sub>(\u2160)<\/em>\u3002<\/p>\n

\u7531\u4e8e\u7535\u6d41IG<\/sub>\u6d41\u5165\u6805\u6781\u5f15\u811a\uff0c\u56e0\u6b64RG_EXT<\/sub>\u4ea7\u751f\u7535\u538b\u964dVRG_EXT<\/sub>(\u2160)<\/em>\u3002<\/p>\n<\/div>\n

\"\u4e00\u822c\u7684\u306aMOSFET\u306e\u30b2\u30fc\u30c8\u99c6\u52d5\u306b\u304a\u3051\u308b\u30b9\u30a4\u30c3\u30c1\u30f3\u30b0\u52d5\u4f5c\u4e2d\u306e\u96fb\u5727\"<\/div>\n<\/div>\n

\u867d\u7136\u6805\u6781\u7ebf\u8def\u7684LTRACE<\/sub>\u4e5f\u4ee5\u76f8\u540c\u7684\u673a\u5236\u4ea7\u751f\u7535\u52a8\u52bf\uff0c\u4f46\u975e\u5e38\u5c0f\uff0c\u5f71\u54cd\u5f88\u5c0f\uff0c\u56e0\u6b64\u5728\u6b64\u7701\u7565\u3002
\n\u8fd9\u4e9b\u7535\u538b\u5305\u542b\u5728\u5bfc\u901a\u65f6\u7684\u9a71\u52a8\u7535\u8def\u7f51\u4e2d\uff0c\u56e0\u6b64\uff0c\u5b9e\u9645\u4e0a\u65bd\u52a0\u7ed9\u5185\u90e8\u82af\u7247\u5e76\u4f7fMOSFET\u5bfc\u901a\u7684\u7535\u538bVGS_INT<\/sub>\u51cf\u5c11\u4e86\u3002VGS_INT<\/sub>\u7684\u51cf\u5c11\u53ef\u4ee5\u901a\u8fc7\u516c\u5f0f\uff081\uff09\u6765\u8868\u793a\u3002<\/p>\n

\"VGS_INT\u8ba1\u7b971\"<\/p>\n

\uff0d\u4e5f\u5c31\u662f\u8bf4\uff0c\u5b9e\u9645\u4e0a\u65bd\u52a0\u7ed9\u5185\u90e8\u82af\u7247\u7684VGS_INT<\/sub>\uff0c\u662f\u4ece\u6805\u6781\u65bd\u52a0\u7535\u538bVG<\/sub>\u51cf\u53bb\u5916\u7f6e\u6805\u6781\u7535\u963b\u7684\u7535\u538b\u964d\u548c\u6e90\u6781\u5f15\u811a\u5bc4\u751f\u7535\u611f\u7684\u7535\u52a8\u52bf\u4e4b\u540e\u7684\u7535\u538b\u5bf9\u5427\u3002<\/p>\n

\u662f\u7684\u3002\u5f53VGS_INT<\/sub>\u51cf\u5c11\u540e\uff0cMOSFET\u5bfc\u901a\u7684\u901f\u5ea6\uff08\u5373\u5f00\u5173\uff09\u5c31\u4f1a\u53d8\u6162\u3002
\n\u5173\u65ad\u65f6\u4e5f\u540c\u6837\u9002\u7528\u516c\u5f0f\uff081\uff09\u3002\u4f46\u662f\uff0c\u7531\u4e8eIG<\/sub>\u548cdID<\/sub>\/dt\u53d8\u4e3a\u8d1f\u6570\uff0c\u56e0\u6b64RG_EXT<\/sub>\u548cLSOURCE<\/sub>\u4ea7\u751f\u6807\u8bb0\u4e3a(\u2161)\u7684\u7535\u538b\u4e0a\u5347\uff0cVGS_INT<\/sub>\u53cd\u800c\u589e\u52a0\u3002\u589e\u52a0\u540e\u4f7f\u5173\u65ad\u901f\u5ea6\u4e0b\u964d\u3002<\/p>\n

\uff0d\u5173\u4e8e\u60a8\u63d0\u5230RG_EXT<\/sub>\u548cLSOURCE<\/sub>\u4f1a\u5bfc\u81f4\u5f00\u5173\u901f\u5ea6\u4e0b\u964d\uff0cRG_EXT<\/sub>\u662f\u5916\u7f6e\u7684\u6805\u6781\u7535\u963b\uff0c\u56e0\u6b64\u53ea\u8981\u51cf\u5c0f\u7535\u963b\u503c\u5c31\u53ef\u4ee5\u51cf\u5c11\u5f71\u54cd\u4e86\u5427\uff1f<\/p>\n

\u5982\u60a8\u6240\u8ff0\uff0c\u901a\u8fc7\u51cf\u5c0fRG_EXT<\/sub>\u662f\u53ef\u4ee5\u63d0\u9ad8\u5f00\u5173\u901f\u5ea6\u7684\u3002RG_EXT<\/sub>\u672c\u6765\u662f\u7528\u6765\u8c03\u6574\u5f00\u5173\u901f\u5ea6\u7684\uff0c\u5728\u8fd9\u91cc\u5e94\u8be5\u7406\u89e3\u5982\u679cRG_EXT<\/sub>\u5927\u4e8e\u6240\u9700\u7684\u503c\uff0c\u5c31\u4f1a\u4e0d\u5fc5\u8981\u5730\u964d\u4f4e\u5f00\u5173\u901f\u5ea6\uff0c\u800c\u4e14\u5f00\u5173\u635f\u8017\u4f1a\u589e\u52a0\u3002<\/p>\n

\u53e6\u5916\uff0cLSOURCE<\/sub>\u662f\u5c01\u88c5\u5185\u90e8\u7684\u5bc4\u751f\u5206\u91cf\uff0c\u56e0\u6b64\u65e0\u6cd5\u4ece\u5916\u90e8\u8fdb\u884c\u8c03\u6574\u3002\u8fd9\u662f\u975e\u5e38\u91cd\u8981\u7684\u4e00\u70b9\u3002\u4e00\u822c\u6765\u8bb2\uff0c\u7535\u6e90\u5f00\u5173\u5143\u5668\u4ef6\u7684LSOURCE<\/sub>\u4e3a\u51e0nH\u5230\u5341\u51e0nH\uff0c\u52a0\u4e0a\u5f53dID<\/sub>\/dt\u8fbe\u5230\u51e0A\/ns\u65f6\u53ef\u80fd\u4f1a\u4ea7\u751f10V\u4ee5\u4e0a\u7684\u7535\u52a8\u52bfVLSOURCE<\/sub>\uff0c\u8fd9\u4e9b\u5c06\u5bf9\u5f00\u5173\u5de5\u4f5c\u4ea7\u751f\u5f88\u5927\u7684\u5f71\u54cd\u3002<\/p>\n

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