Öйúµç×Ó¼¼ÊõÍø

ÉèΪÊ×Ò³ ÍøÕ¾µØÍ¼ ¼ÓÈëÊÕ²Ø

 
 

[Ô­´´] Infineon TLD5542£­1ͬ²½MOSFET HÇÅDC£­DC¿ØÖÆÆ÷½â¾ö·½°¸

¹Ø¼ü´Ê£ºµçÔ´¹ÜÀí DC£¯DCת»»Æ÷ LEDÕÕÃ÷

ʱ¼ä£º2020-05-14 11:56:03       À´Ô´£ºÖеçÍø


ÕªÒª: Infineon¹«Ë¾µÄTLD5542-1ÊÇÄÚÖÃÁ˱£»¤ÌØÐÔºÍSPI½Ó¿ÚµÄͬ²½MOSFET HÇÅDC-DC¿ØÖÆÆ÷,ÌØ±ðÊʺÏÓÚÇý¶¯¾ßÓÐ×î´óϵͳЧÂʺÍ×îÉÙÍâ½ÓÔª¼þµÄ´ó¹¦ÂÊLED. TLD5542-1Êǵ¥µç¸Ð´ó¹¦ÂʽµÑ¹-Éýѹ¿ØÖÆÆ÷,ÌṩģÄâºÍÊý×Ö(PWM)µ÷¹â,¿ª¹ØÆµÂÊÔÚ200 kHz µ½700 kHz¼ä¿Éµ÷.LEDÕýÏòµçѹÔÚ2V-55V),VINµçѹ·¶Î§¿í(IC 4.5V-40V,µçÔ´4.5V-55V),ÿÖÖÌõ¼þϵÄЧÂʸߴï96%. TLD5542-1¾ßÓкãÁ÷(LED)ºÍºãѹÎÈѹÆ÷.ÓÉÓÚ¿ìËÙÊä³ö·Åµç²Ù×÷,µ¥¸öIC¿ÉÇý¶¯¶à¸ö¸ºÔØ.LEDºÍÊäÈëµçÁ÷¼ì²âÓÐרÓõļà²âÆ÷Êä³ö,ÓÃÓÚÆ÷¼þºÍ¸ºÔصÄÏȽøµÄ±£»¤ÌØÐÔ. LEDµçÁ÷¾«¶ÈÔÚ+/- 3%.Ö÷ÒªÓÃÔÚÇý¶¯¶à¸ö´ó¹¦ÂÊLED¹¦ÄܵÄÌØ±ðÉè¼Æ,Æû³µÍⲿÕÕÃ÷,ͨÓÃDC/DCµçѹÎÈѹÆ÷.±¾ÎĽéÉÜÁËTLD5542-1Ö÷ÒªÌØÐÔ,±£»¤¹¦ÄܺÍÕï¶Ï¹¦ÄÜÒÔ¼°õËÐÐģʽ¹¦ÄÜ,¿òͼºÍÎÈѹÆ÷¿òͼ,Ó¦Óÿòͼ,ÒÔ¼°TLD5542-1¶à·ÆÀ¹À°åV4.4Ö÷ÒªµçÌØÐÔ,µç·ͼºÍPCBÉè¼ÆÍ¼.



The TLD5542-1 is a synchronous MOSFET H-Bridge DC/DC controller with built in protection features and SPI interface. This concept is beneficial for driving high power LEDs with maximum system efficiency and minimum number of external components. The TLD5542-1 offers both analog and digital (PWM) dimming. The switching frequency is adjustable in the range of 200 kHz to 700 kHz. It can be synchronized to an external

clock source. A built in programable Spread Spectrum switching frequency modulation and the forced continuous current regulation mode improve the overall EMC behavior. Furthermore the current mode regulation scheme provides a stable regulation loop maint..

²é¿´È«ÎÄ

  • ·ÖÏíµ½£º

 

²ÂÄãϲ»¶