ããåºæåºç®¡å·¥ä½åçç¨ä¸å¥è¯è¯´ï¼å°±æ¯âæ¼æ-æºæé´æµç»æ²éçIDï¼ç¨ä»¥æ
æä¸æ²éé´çpnç»å½¢æçååçæ
æçµåæ§å¶IDâãæ´æ£ç¡®å°è¯´ï¼IDæµç»éè·¯ç宽度ï¼å³æ²éæªé¢ç§¯ï¼å®æ¯ç±pnç»ååçååï¼äº§çèå°½å±æ©å±ååæ§å¶çç¼æ
ãå¨VGS=0çé饱ååºåï¼è¡¨ç¤ºçè¿æ¸¡å±çæ©å±å 为ä¸å¾å¤§ï¼æ ¹æ®æ¼æ-æºæé´æå VDSççµåºï¼æºæåºåçæäºçµå被æ¼ææå»ï¼å³ä»æ¼æåæºææçµæµIDæµå¨ãä»é¨æåæ¼ææ©å±çè¿åº¦å±å°æ²éçä¸é¨åææå µå¡åï¼ID饱åãå°è¿ç§ç¶æ称为夹æãè¿æå³çè¿æ¸¡å±å°æ²éçä¸é¨åé»æ¡ï¼å¹¶ä¸æ¯çµæµè¢«åæã
ããå¨è¿æ¸¡å±ç±äºæ²¡æçµåã空穴çèªç±ç§»å¨ï¼å¨çæ³ç¶æä¸å ä¹å
·æç»ç¼ç¹æ§ï¼é常çµæµä¹é¾æµå¨ãä½æ¯æ¤æ¶æ¼æ-æºæé´ççµåºï¼å®é
ä¸æ¯ä¸¤ä¸ªè¿æ¸¡å±æ¥è§¦æ¼æä¸é¨æä¸é¨éè¿ï¼ç±äºæ¼ç§»çµåºæå»çé«éçµåéè¿è¿æ¸¡å±ãå æ¼ç§»çµåºç强度å ä¹ä¸å产çIDç饱åç°è±¡ãå
¶æ¬¡ï¼VGSåè´çæ¹åååï¼è®©VGS=VGS(off)ï¼æ¤æ¶è¿æ¸¡å±å¤§è´æ为è¦çå
¨åºåçç¶æãèä¸VDSççµåºå¤§é¨åå å°è¿æ¸¡å±ä¸ï¼å°çµåæåæ¼ç§»æ¹åççµåºï¼åªæé è¿æºæçå¾çé¨åï¼è¿æ´ä½¿çµæµä¸è½æµéã
ããMOSåºæåºç®¡çµæºå¼å
³çµè·¯
ããMOSåºæåºç®¡ä¹è¢«ç§°ä¸ºéå±æ°§åç©å导ä½åºæåºç®¡(MetalOxideSemiconductor
ããFieldEffect Transistor,
ããMOSFET)ãå®ä¸è¬æèå°½ååå¢å¼ºå两ç§ãå¢å¼ºåMOSåºæåºç®¡å¯å为NPNåPNPåãNPNåé常称为Næ²éåï¼PNPåä¹å«Pæ²éåã对äºNæ²éçåºæåºç®¡å
¶æºæåæ¼ææ¥å¨Nåå导ä½ä¸ï¼åæ ·å¯¹äºPæ²éçåºæåºç®¡å
¶æºæåæ¼æåæ¥å¨Påå导ä½ä¸ãåºæåºç®¡çè¾åºçµæµæ¯ç±è¾å
¥ççµåï¼æ称çµåºï¼æ§å¶ï¼å¯ä»¥è®¤ä¸ºè¾å
¥çµæµæå°æ没æè¾å
¥çµæµï¼è¿ä½¿å¾è¯¥å¨ä»¶æå¾é«çè¾å
¥é»æï¼åæ¶è¿ä¹æ¯æ们称ä¹ä¸ºåºæåºç®¡çåå ã
ããå¨äºæ管å ä¸æ£åçµåï¼P端æ¥æ£æï¼N端æ¥è´æï¼æ¶ï¼äºæ管导éï¼å
¶PNç»æçµæµéè¿ãè¿æ¯å 为å¨Påå导ä½ç«¯ä¸ºæ£çµåæ¶ï¼Nåå导ä½å
çè´çµå被å¸å¼èæ¶åå ææ£çµåçPåå导ä½ç«¯ï¼èPåå导ä½ç«¯å
çæ£çµååæNåå导ä½ç«¯è¿å¨ï¼ä»èå½¢æ导éçµæµãåçï¼å½äºæ管å ä¸ååçµåï¼P端æ¥è´æï¼N端æ¥æ£æï¼æ¶ï¼è¿æ¶å¨Påå导ä½ç«¯ä¸ºè´çµåï¼æ£çµå被èéå¨Påå导ä½ç«¯ï¼è´çµååèéå¨Nåå导ä½ç«¯ï¼çµåä¸ç§»å¨ï¼å
¶PNç»æ²¡æçµæµéè¿ï¼äºæ管æªæ¢ãå¨æ
æ没æçµåæ¶ï¼ç±åé¢åæå¯ç¥ï¼å¨æºæä¸æ¼æä¹é´ä¸ä¼æçµæµæµè¿ï¼æ¤æ¶åºæåºç®¡å¤ä¸æªæ¢ç¶æï¼å¾7aï¼ãå½æä¸ä¸ªæ£çµåå å¨Næ²éçMOSåºæåºç®¡æ
æä¸æ¶ï¼ç±äºçµåºçä½ç¨ï¼æ¤æ¶Nåå导ä½çæºæåæ¼æçè´çµå被å¸å¼åºæ¥èæ¶åæ
æï¼ä½ç±äºæ°§åèçé»æ¡ï¼ä½¿å¾çµåèéå¨ä¸¤ä¸ªNæ²éä¹é´çPåå导ä½ä¸ï¼è§å¾7bï¼ï¼ä»èå½¢æçµæµï¼ä½¿æºæåæ¼æä¹é´å¯¼éãå¯ä»¥æ³å为两个Nåå导ä½ä¹é´ä¸ºä¸æ¡æ²ï¼æ
æçµåç建ç«ç¸å½äºä¸ºå®ä»¬ä¹é´æäºä¸åº§æ¡¥æ¢ï¼è¯¥æ¡¥ç大å°ç±æ
åç大å°å³å®ã
ããC-MOSåºæåºç®¡ï¼å¢å¼ºåMOSåºæåºç®¡ï¼
ããçµè·¯å°ä¸ä¸ªå¢å¼ºåPæ²éMOSåºæåºç®¡åä¸ä¸ªå¢å¼ºåNæ²éMOSåºæåºç®¡ç»åå¨ä¸èµ·ä½¿ç¨ãå½è¾å
¥ç«¯ä¸ºä½çµå¹³æ¶ï¼Pæ²éMOSåºæåºç®¡å¯¼éï¼è¾åºç«¯ä¸çµæºæ£ææ¥éãå½è¾å
¥ç«¯ä¸ºé«çµå¹³æ¶ï¼Næ²éMOSåºæåºç®¡å¯¼éï¼è¾åºç«¯ä¸çµæºå°æ¥éãå¨è¯¥çµè·¯ä¸ï¼Pæ²éMOSåºæåºç®¡åNæ²éMOSåºæåºç®¡æ»æ¯å¨ç¸åçç¶æä¸å·¥ä½ï¼å
¶ç¸ä½è¾å
¥ç«¯åè¾åºç«¯ç¸åãéè¿è¿ç§å·¥ä½æ¹å¼æ们å¯ä»¥è·å¾è¾å¤§ççµæµè¾åºãåæ¶ç±äºæ¼çµæµçå½±åï¼ä½¿å¾æ
åå¨è¿æ²¡æå°0Vï¼é常å¨æ
æçµåå°äº1å°2Væ¶ï¼MOSåºæåºç®¡æ¢è¢«å
³æãä¸ååºæåºç®¡å
¶å
³æçµåç¥æä¸åãä¹æ£å 为å¦æ¤ï¼ä½¿å¾è¯¥çµè·¯ä¸ä¼å 为两管åæ¶å¯¼éèé æçµæºçè·¯ã
建议æ¥ä¸èµæ.æè§è¿æ ·çæé®æ²¡ææä¹
追é®ææ¨èç书ç±å
æå¨å¾ä¹¦é¦ç¿»äºå¾å¤ï¼ä¸ä¸ªæ¯ä¸ä¸ªç®å
谢谢å¦