【摘 要】
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DIFFERENT LED CHIPS AND MODULES OR DIFFERENT LUMINANCE REQUIRES DIFFERENT DRIVE CURRENT.THE LED DRIVER MANUFACTURES HAVE TO DESIGN DIFFERENT KIND OF DRIVERS
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DIFFERENT LED CHIPS AND MODULES OR DIFFERENT LUMINANCE REQUIRES DIFFERENT DRIVE CURRENT.THE LED DRIVER MANUFACTURES HAVE TO DESIGN DIFFERENT KIND OF DRIVERS TO MEET MORE AND MORE TYPES OF OUTPUT CURRENT AND OUTPUT POWER REQUIREMENT.THE CONSTANT POWER CURRENT MODE LED DRIVER IS PRESENTED FOR THIS ISSUE.WITH THIS KIND OF DRIVER,THE USER CAN EASILY SET THE OUTPUT CURRENT OF THE DRIVER WITHOUT DE-RATING THE TOTAL OUTPUT POWER.FOR A 150W LED DRIVER,IT WILL ALWAYS DELIVER 150W WHENEVER YOU SET 1A OUTPUT OR 3A OUTPUT.THIS GIVES THE LUMINAIRE ENGINEER MORE FLEXIBILITY TO MAKE 1 LED DRIVER TO FIT DIFFERENT LED CHIPS AND LED MODULES,AND THUS SPEEDS UP THE PRODUCT DESIGN CYCLE.TO ACHIEVE TARGET SPECIFICATION,MANY DESIGN IMPROVEMENTS ARE ACHIEVED,SUCH AS SR CONTROL OF BUCK,BUS VOLTAGE MANAGEMENT,LLC WORKING AREA OPTIMIZATION.THE ADVANTAGES ARE LISTED,AND THE APPLICATION IS PRESENTED.
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