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µðÁöÅÐ Àü·Â ½ÃÀå¿¡ ÁøÃâÇÏ´Â ¼ÀÅ×Å©

(Åé ±â»ç, 28 Jun 2010 )

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SC493Àº µðÁöÅÐ ÄÁÆ®·Ñ·¯ÀÇ À¯¿¬¼º°ú ±â´ÉÀ» ¼ÀÅ×Å©ÀÇ Æ¯Çã ±â¼úÀÎ AOT(Adaptive-on-time) ÄÁÆ®·Ñ·¯ ¾ÆÅ°ÅØÃ³ÀÇ Ãʰí¼Ó °úµµ ÀÀ´ä ¹× ³ôÀº È¿À²¼º°ú °áÇÕÇÏ¿© ¼ÀÅ×Å© EcoSpeed¢â ÄÁÆ®·Ñ·¯ Ç÷§Æû¿¡ Ãß°¡µÈ ÃֽŠÁ¦Ç°ÀÌ´Ù.

¼ÀÅ×Å©ÀÇ Àü·Â°ü¸® ±×·ì ¼ö¼® Á¦Ç° ¸¶ÄÉÆÃ ¸Å´ÏÀú ¾Ù·± ¹öÄ¡Çʵå´Â ¡°¿À´Ã³¯ ´ëºÎºÐÀÇ ÄÁÆ®·Ñ·¯ Á¦Ç°Àº ¾Æ³¯·Î±× ¹æ½ÄÀ¸·Î, ³ôÀº ¼º´ÉÀ» ÀÚ¶ûÇÏÁö¸¸ À¯¿¬¼ºÀº ºÎÁ·ÇÑ ´ÜÁ¡ÀÌ ÀÖ´Ù. ÀϺΠÄÁÆ®·Ñ·¯ Á¦Ç°Àº ÇöÀç µðÁöÅÐ À¯¿¬¼ºÀ» Á¦°øÇϰí ÀÖÀ¸³ª, ÀϹÝÀûÀ¸·Î ¿ÏÀüÇÑ µðÁöÅÐ ÅäÆú·ÎÁö¸¦ ÅëÇØ À¯¿¬¼ºÀ» ½ÇÇöÇÑ´Ù. µû¶ó¼­, °í¼Ó µ¥ÀÌÅÍ ÄÁ¹öÅÍ ¹× Àü·ÂÀÌ ºÎÁ·ÇÑ DSP°¡ Ãß°¡·Î ¿ä±¸µÈ´Ù. ¼ÀÅ×Å©´Â À̸¦ ÇØ°áÇϱâ À§ÇØ µ¿±Þ ÃÖ°­ÀÇ ÀÚ»ç AOT EcoSpeed¢â ÄÁÆ®·Ñ·¯ Äھ Ȱ¿ëÇÏ´Â Á¢±Ù ¹æ¹ýÀ» ÅÃÇßÀ¸¸ç, Äھ µðÁöÅÐ ÀÎÅÍÆäÀ̽º·Î µÑ·¯½Î È¿À²ÀûÀÎ °í¼º´É ¾Æ³¯·Î±× ÄÚ¾îÀÇ ÀåÁ¡ ¹× µðÁöÅÐ Á¦¾îÀÇ À¯¿¬¼ºÀ» Á¦°øÇÒ ¼ö ÀÖ°Ô µÇ¾ú´Ù.¡±°í ¹àÇû´Ù.

SC493ÀÇ I2C ÀÎÅÍÆäÀ̽º¸¦ ÀÌ¿ëÇÏ¿© Ãâ·Â Àü¾ÐÀ» ¹Ì¼¼ÇÏ°Ô Á¶Á¤Çϰí, ¸¶Áö´×(margining)À» ±¸ÇöÇÒ ¼ö ÀÖÀ¸¸ç, Ãâ·Â ÀÛµ¿/ÀÛµ¿ ºÒ´É »óÅÂ, ±³È¯ Á֯ļö, Àü·Â Áö¿¬ ½Ã°£, ¼ÒÇÁÆ® ½ÃÀÛ ½Ã°£, ÀýÀü ¸ðµå ¹× ÃÊÀ½ÆÄ ÀýÀü Á֯ļö ÇÁ·Î±×·¡¹ÖÀÌ °¡´ÉÇÏ´Ù. Àü·ù Çѵµ, °úÀ× ¿Âµµ, Àü¾Ð °úÀ× ¹× ºÎÁ·, µîÈ­ °üÁ¦ ¹× Àü·Â ¾çÈ£ µîÀ» Æ÷ÇÔÇÏ¿© Áø´Ü ¸ñÀûÀ¸·Î I2C »óÅ ·¹Áö½ºÅÍ ºñÆ®¸¦ »ç¿ëÇÒ ¼ö ÀÖ´Ù.

SC493ÀÇ AOT ÅäÆú·ÎÁö´Â ¼³°èÀÚµéÀÌ ´ë±â ¿ä±¸ ¹× Àüü Àü·ù ¿ä±¸¸¦ ¸ðµÎ È¿À²ÀûÀ¸·Î °ü¸®ÇÒ ¼ö ÀÖµµ·Ï ÇϹǷΠ¿À´Ã³¯ÀÇ º¹ÀâÇÏ°í ¾î·Á¿î ȯ°æ ģȭ ¿¡³ÊÁö ¿ä±¸Á¶°ÇµéÀ» ÃæÁ·ÇÒ ¼ö ÀÖµµ·Ï Áö¿øÇÑ´Ù. SC493Àº I2C ÇÁ·Î±×·¡¹Ö ±â´É°ú °áÇÕµÈ °­·ÂÇÑ AOT ÄÚ¾î·Î¼­, ³×Æ®¿öÅ·, Åë½Å, »ê¾÷ ÀÚµ¿È­ ¹× »ç¹« ÀÚµ¿È­ Àåºñ¿ëÀ¸·Î »ç¿ëµÇ´Â ³»Àå ¾ÖÇø®ÄÉÀ̼ǿ¡¼­ ³ôÀº Àü·ù, ÁÖ¿ä Àü¿ø °ø±Þ ºÐ»ê ·¹ÀÏ¿¡ ´ëÇÑ ÃÖÀûÀÇ ¼±ÅÃÀÌ´Ù.

¼ÀÅ×Å©ÀÇ AOT ÄÚ¾î´Â »ó¼â Çö»óÀ» ÃÖ¼ÒÈ­Çϸ鼭 ÃÖ°í ¼öÁØÀÇ Àü·ù ¸ðµå, Àü¾Ð ¸ðµå ¹× »ó¼ö ½Ã°£ (constant on-time) ÅäÆú·ÎÁö¸¦ Á¦°øÇØ ÁØ´Ù. ÀÌ ¾ÆÅ°ÅØÃ³¸¦ ÀÌ¿ëÇÏ¿© Àüü Àü·Â ºÎÇϱîÁö Á¶¸í ÀüüÀûÀ¸·Î °íÈ¿À² ¹× Ź¿ùÇÑ Á¤Àû µ¿Àû Á¶ÀýÀÌ °¡´ÉÇÏ´Ù. ¶ÇÇÑ, ¿ÜºÎ º¸»ó ±¸¼º¿ä¼Ò°¡ ÇÊ¿äÇÏÁö ¾Ê¾Æ, °£´ÜÇÏ°í °ø°£ Àý¾à ¹× ºñ¿ë È¿À²ÀûÀÎ Àü·Â °ü¸® ¼Ö·ç¼ÇÀ» Á¦°øÇÑ´Ù.

SC493 ±³È¯ Á֯ļö´Â 250kHz ~ 1MHz »çÀÌÀÇ ¹üÀ§¿¡¼­ ÇÁ·Î±×·¡¹Ö °¡´ÉÇÏ¿©, Àü¿ø °ø±Þ ·¹ÀÏÀ» Àüȯ È¿À²¼º Ãø¸éÀ̳ª ¼Ö·ç¼Ç Å©±â Ãø¸é¿¡¼­ ÃÖÀûÈ­ÇÒ ¼ö ÀÖ´Ù. ¶ÇÇÑ, ÀÌ ÀåÄ¡´Â ¼ÀÅ×Å© »ç °íÀ¯ÀÇ ½º¸¶Æ®µå¶óÀ̺ê¢â ƯÇã ±â¼úÀ» ÅëÇÕÇÑ ÀåÄ¡ÀÌ´Ù. ÀåÄ¡¿¡ ÅëÇÕµÈ ÀÌ ±â¼úÀº 2´Ü°è ÇÏÀÌ-»çÀ̵å FET ÅÏ ¿Â ±â¼ú·Î¼­, ¼ÒÀ½¿¡ ¹Î°¨ÇÑ ¾ÖÇø®ÄÉÀ̼ǿ¡¼­ EMI¸¦ ³·Ãß°í Ãâ·Â Àü·ù¸¦ ÃÖ´ë 25A±îÁö Áö¿øÇÒ ¼ö ÀÖ´Â °­·ÂÇÑ FET °ÔÀÌÆ® µå¶óÀ̺긦 Á¦°øÇØ ÁØ´Ù.

 
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