ÀüÀÚ°øÇÐȸ ³í¹®Áö (Journal of The Institute of Electronics and Information Engineers)
Current Result Document : 4 / 5
ÇѱÛÁ¦¸ñ(Korean Title) |
¿ ºÐ»ê ±â´ÉÀ» Æ÷ÇÔÇϰí ÀÖ´Â ÀÚµ¿Â÷¿ë ¼±Çü LED ±¸µ¿ IC ¼³°è |
¿µ¹®Á¦¸ñ(English Title) |
A Design of LED Driver IC with Heat Dispersion for Automotive Applications |
ÀúÀÚ(Author) |
±è±ÔÈ£
ÀÌÁÖÇö
±èÇØºÀ
Á¶°æ·Ï
Kyuho Kim
Juhyun Lee
Haifeng Jin
Kyoungrok Cho
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¿ø¹®¼ö·Ïó(Citation) |
VOL 57 NO. 03 PP. 0153 ~ 0169 (2020. 03) |
Çѱ۳»¿ë (Korean Abstract) |
º» ³í¹®¿¡¼´Â ÀÚµ¿Â÷ ½Ç³»µî LEDÀÇ ²¨Áü Çö»óÀÌ ¹ß»ýÇÏÁö ¾Êµµ·Ï ¿ ºÐ»ê ±â´ÉÀ» ³»ÀåÇÏ°í ¿Âµµ Áõ°¡ ½Ã ¹ß¿ °¨¼Ò¸¦ À§ÇÏ¿© Àü·ù¸¦ °¨¼ÒÇÏ´Â ±â´ÉÀ» Æ÷ÇÔÇϰí ÀÖ´Â Á¤Àü·ù ¸ðµåÀÇ ¼±Çü ¹æ½Ä LED ±¸µ¿ IC¸¦ ¼³°èÇÏ¿´´Ù. ¼³°èÇÑ IC´Â PWM ¹æ½ÄÀ¸·Î LED ¹à±â¸¦ Á¶ÀýÇϰí LED ±¸µ¿ Àü·ù ½ºÀ§Äª ½Ã ¹ß»ýÇÒ ¼ö ÀÖ´Â EMI ¾ïÁ¦¸¦ À§ÇÏ¿© ½½·çÀ² Á¦¾î ±â´ÉÀ» ³»ÀåÇÏ¿´´Ù. ¼³°èÇÑ LED ±¸µ¿ IC´Â Á¤Àü·ù¿ø »ý¼ºÈ¸·Î, ¿ÂµµÁ¦¾î ȸ·Î, LED ±¸µ¿ ȸ·Î·Î ±¸¼ºÇÏ¿´´Ù. ¼³°èÇÑ IC´Â 0.18um BCD °øÁ¤À¸·Î Á¦ÀÛÇÏ¿´°í ¿ ºÐ»ê ±â´ÉÀ» Àû¿ëÇÏ¿© LED¸¦ ±¸µ¿ ½Ã ¹ß»ýÇÏ´Â ¹ß¿À» Á¾Àü ±â¼ú ´ëºñ ¾à 13¡É ÀÌ»ó °¨¼ÒÇÔÀ¸·Î½á ¼º´ÉÀ» °³¼±ÇÏ¿´´Ù.
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¿µ¹®³»¿ë (English Abstract) |
This paper presents the design of a linear LED driver IC that includes a heat dispersion function and a function to reduce the current when the temperature increases so that LED does not turn off due to overheating in the automotive environment. The designed IC controls LED brightness with PWM and embedded a slew rate control function to suppress EMI that may occur when LED driving current is switching. The designed LED driver IC consists of a constant current generation circuit, temperature control circuit, and LED driving circuit. The designed IC is fabricated under 0.18 um BCD process and the heat dissipation is improved by more than 13¡É according to the heat dispersion circuit.
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Ű¿öµå(Keyword) |
5LED Driver
Automotive
Thermal management
Heat dispersion
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