ÂíÉÏ×¢²á£¬»ñÈ¡ÔĶÁ¾«»ªÄÚÈݼ°ÏÂÔØȨÏÞ
ÄúÐèÒª µÇ¼ ²Å¿ÉÒÔÏÂÔØ»ò²é¿´£¬Ã»ÓÐÕʺţ¿×¢²á
x
±¾Ìû×îºóÓÉ »Æöδ¬ ÓÚ 2014-3-6 16:57 ±à¼
DELL Inspiron 1440´Ó²»´¥·¢µ½²»ÁÁ»ú¼òµ¥Î¬ÐÞÒ»Àý £¨³ä·ÖÀûÓõç×è·Öѹ£¬ÓÃRT8205A³É¹¦´ú»»TPS51125£© Ôʼ¹ÊÕÏ£º²»´¥·¢ ´ý»úµçÁ÷£º0.082×óÓÒ£¨µçÁ÷Æ«´ó£¬Ã²ËÆÓжÌ·£© °åºÅ£ºÎ³´´×Êͨ AlbaUMA άÐÞ¹ý³ÌÈçÏ£º Ê×ÏÈ£¬´Ó´ý»úµçÁ÷À´¿´£¬´ý»úµç·Ӧ¸Ã´æÔÚ΢¶Ì·£¬ËùÒÔ£¬ÎÒ²ðÏÂÖ÷°åºó£¬´òÁËһϸ÷×鹩µçºÍÍâÉèµç·£¨ÈçUSB¡¢Íø¿¨¡¢MINIPCI-EµÈµÈ£©µÄ¶ÔµØ×èÖµ£¬Ã»·¢ÏÖÃ÷ÏԶ̷¡£°¥£¬¿´À´µÃ²åÉϿɵ÷µçÔ´£¬²â²â´ý»úµçѹÁË£¬ÓÚÊÇ˵¸É¾Í¸É£¬²ÙÆð±í±ÊÍùPL3301£¨+3D3V_PWR£©¡¢PL3302(+5V_PWR)Á½¸öµç¸ÐÉÏһͱ£¬½á¹û·¢ÏÖ¡¡Ò»µãµçѹ¶¼Ã»ÓУ¬
ÊÖÃþоƬ¨D¨DҲû¾õµÃ·¢ÌÌ£¬Õâ¸ö´ýоƬÐͺÅÊÇTPS51125,ÄѵÀоƬ¹ÒÁË£¿»¹ÊDzé²éËüµÄ¹¤×÷Ìõ¼þ°É£¬²âµÃVINÓÐ18.5V¡¢VREFÓÐ2V¡¢VREG5ÓÐ5VÏßÐÔÊä³ö¡¢VREG3ÏßÐÔÊä³öΪ0V£¡ºÃÁË×ÜËãÕÒµ½ÎÊÌâÁË
VREG3ÏßÐÔµçѹΪ0VµÄÔÒòÒ»°ãÓÐÁ½ÖÖ£º1¡¢Ð¾Æ¬»µÁË£¬2¡¢ºó¼¶¸ºÔØÀµÍ£¬Í¼ÖпÉÒÔ¿´µ½£¬VREG3ÏßÐÔÊä³öºó¸ÄÃûΪ3D3V_AUX_S5£¬¶ø3D3V_AUX_S5ÓÖ¾¹ýPR3301µÄ0Å·µç×è¸ÄÃûΪ+3.3V_RTC_LDO£¬ÈçÏÂͼ£º
ËùÒÔÎÒ¾ÍÏ룬ֻҪ°ÑPR3301¶Ï¿ªÔٲ⣬¾ÍÖªµÀÊÇоƬ±¾ÉíÎÞÊä³ö»¹ÊǺ󼶶Ì·ÁË£¬ÓÚÊǾÍÒ»ÀÓÏÂÈ¥£¬°ÑPR3301¸Éµô£¬Í¨µç²âµÃ3D3V_AUX_S5ÍêÃÀ³öÀ´ÁË3.3Vµçѹ¡£´ý»úµçÁ÷Ò²»Ö¸´Õý³£ÁË£¬Õâ¾Í˵Ã÷ºó¼¶¶Ì·ÁË£¬ÄǺó¼¶Õâ¸ö+3.3V_RTC_LDOµçѹȥµÄµØ·½²»¶à£¬ÏÈ°ÑPR3301×°»ØÈ¥£¬½«+3.3V_RTC_LDOºóÃæµÄµç·һ¸ö¸ö¶Ï¿ª²âÁ¿£¬×îºó·¢ÏÖ£º¶Ï¿ªECºó£¬+3.3V_RTC_LDOµçѹ»Ö¸´Õý³££¬´ËʱÒÔΪEC¹ÒÁË£¬Õâ¸öECµÄÐͺÅÊÇWPCE773LA0DG£¬Ö±½Ó½«ECÈ¡Ï£¬ÕÒÁ˸öеÄEC×°ÉÏ£¬²åÉϵçԴͨµç£¬ºÙ£¡»¹ÊÇÀÏÑù×Ó£¬´ý»úµçÁ÷ÓÖ±ä³ÉÁË0.082£¬²â+3.3V_RTC_LDOΪ0V£¬¿¿£¡ÄѵÀ»»ÉÏÈ¥µÄÐÂECÒ²ÊÇ»µµÄ£¿ÐÄÀï×ܾõµÄÓÐЩ²»¶Ô¾¢£¬ÖØÐÂÀíÇå˼·£¬Ò»¿ªÊ¼ÓÃÊÖÃþ¹ý´ý»úоƬ£¬·¢ÏÖËüÓеãζȣ¬Äª·ÇÕæÓëËü×ÔÉíÓйØϵ£¿¸É´à»»ÁËÔÙ˵£¬ÕÒоƬȥ£¬ÕÒ°¡ÕÒ£¬ÕÒÁË°ëÌìûÕÒµ½TPS51125,´Ëʱ²ÅÏëÆðÕâ¸öоƬÒѾûÓпâ´æÁË£¬ÉÏ´ÎÓÃÍêÁË»¹Âò£¬Ã»Ð¾Æ¬»»Õ¦°ìÄØ£¿´ËʱÏëÆðÁËRT8205A£¬ÕýºÃÊÖÉÏÓÐÕâ»õ£¬´ó¼Ò¿Ï¶¨»áÎÊ£¬ÕâRT8205AÄÜ´ú»»TPS51125Âð£¿ÎÒÒ²²»ÖªµÀ£¬ÓÃÏÂÃæµÄͼƬ˵»°°É£º
RT8205ºÍTPS51125´ÓÉÏÃæÁ½¸öͼµÄÒý½Å¶¨ÒåÀ´¿´£¬Ö»ÓеÚ18½Å²»Ò»ÑùÖ®Í⣬ÆäËü½ÅλÍêÈ«Ïàͬ£¬ÎÒÏȲ»È¥Àí»áÕâ¸ö18½Å£¬×°ÉÏÖ®ºó¡°É½ÈË×ÔÓÐÃî¼Æ¡±£¬Ñ¸ËÙ°Ñ51125È¡Ï£¬×°ÉÏ8205A£¬²åÉϿɵ÷µçÔ´£¬Ææ¼£³öÏÖÁË£¬´ý»úµçÁ÷»Ö¸´µ½ÁË0.022A£¬¼¤¶¯µÄÄÃÆðÍòÓñí±Ê²âÁËÒ»ÏÂPL3301¡¢PL3302£¬3V 5V´ý»úµçѹȫ³öÀ´ÁË£¬°´¿ª¹Ø´¥·¢ºó£¬µçÁ÷Åܵ½0.286×óÓÒ²»¶¯ÁË£¬´Ëʱ²âµÃ³ýÎÞVCOREµçѹÍ⣬ÆäËüµçѹȫ²¿Õý³££¬Õâ¸öÎÊÌâÊÇÔ¤ÁÏÖеÄÊ£¬ÒòΪRT8205AµÄµÚ18½ÅÊÇNC£¨²»²ÉÓã©£¬¶øTPS51125µÄµÚ18½ÅÊÇVCLK£¬ÄÇÕâ¸öVCLK½ÅÊÇÓÃÀ´×÷ʲôÓõÄÄØ£¬¼ÌÐø¿´ÏÂÃæµÄͼ¾ÍÖªµÀÁË£º
ÉÏÃæͼֽÖпÉÒÔ¿´µ½£¬51125µÄµÚ18½ÅÍⲿÃû³ÆÊÇ51125_VCLK£¬ÄÇÕâ¸ö51125_VCLKµÄ×÷ÓþÍÊÇÊä³ö5V×óÓÒµÄÀàËÆÓÚ·½²¨ÐÎʽ£¬ÔÙͨ¹ýPC3324ºÍPC3327À´ÅäºÏPD3305¡¢PD3306½«+5V_PWR×Ô¾ÙÉýѹΪ+15V_ALWµçѹµÄ¡£Õâ¸öµçѹʵ¼Ê²âÁ¿ÊÇûÓÐ15VµçѹµÄ£¬×î¶à12V,µ«ÊÇÎÒ»»ÉÏÈ¥µÄRT8205AµÄ18½Å²»¾ß±¸Õâ¸öÉýѹ¹¦ÄÜÔõô°ìÄØ£¿ÎÒÃÇÀ´·ÖÎöһϣºÔÚÕâ¸öͼֽÖУ¬+15V_ALWµçѹÊÇÔÚ´ý»úµÄʱºò¾Í²úÉúµÄ£¬Ëü²»ÊÜʱÐò¿ØÖÆ£¬ÄÇÎÒÊDz»ÊÇ¿ÉÒÔÈËΪ´´Ôì³öÒ»¸ö+15V_ALWµçѹÀ´ÄØ£¿ÕâÊÇÍêÈ«¿ÉÒԵģ¬ ·½·¨ºÜ¼òµ¥£º 1¡¢ °ÑPD3305È¡µô
2¡¢ ÀûÓõç×è·Öѹ£¬ÕÒµ½Èý¸ö100KµÄµç×è´Ó¹«¹²µã·ÖÒ»¸öµçѹµ½PD3305µÚ2½Åº¸ÅÌÉϼ´¿É¡£
Èý¸ö100Kµç×è·Öѹ·½·¨ÈçÏ£º
½«ÉÏÃæÁ½¸ö100Kµç×è²¢Áª³É50KÓëÏÂÃæ1¸ö100Kµç×è·Öѹ³É´óÔ¼12.6V×óÓҵĵçѹ£¬¸ÕºÃÂú×ãÌõ¼þ£¬°´ÉÏͼ·½·¨Á¬½Ó¼´¿É£¬ÏÂÀ´Ò»ÕÅÁ¬½ÓºÃµÄʵÎïͼ°É£º
Á¬½ÓºÃºó¿ª»ú£¬Ë³ÀûÁÁ»úÁË¡£
×ܽ᣺
1¡¢ Õâ¸öTPS51125¸øÎÒÁôÏÂÁËÒ»×®Ðü°¸£º£¨ÎªÊ²Ã´ÔÚû»»Ð¾Æ¬Ö®Ç°£¬VREG3ÎÞÊä³ö£¬È¡µôEC»ò¶Ï¿ªPR3301Ö®ºó£¬VREG3¾ÍÄÜÊä³ö,ÁíÍâÎÒ»»³ÉRT8205AºóÒ»Çж¼Õý³££¬ÕâÊÇΪʲôÄØ£¿£©¡£
2¡¢ ×îºóÎÒ°ÑȡϵĻ»ÉϵÄTPS51125ºÍEC×°µ½±ðµÄ»úÆ÷ÉÏÈ¥£¬¶¼ÊǺõġ£ÕæÊÇÆæ¹ÖÁË¡£
3¡¢ÕâÑùÓõç×è¸Ä³öÀ´µÄ12VµçѹÓиöȱµã£ºÔÚµ¥¶ÀʹÓõç³ØµÄʱºòÊDz»ÄÜÓõģ¬ÐҺÿͻ§µÄµç³Ø²»´æµç£¬ÎÞ·¨µ¥¶ÀʹÓõç³Ø¡£
|