Design of LED Lighting Driver Circuit Based on LM3402
In order to better promote the application of efficient and energy-saving LED lights,and contribute to energy conservation and environmental protection,in-depth research has been conducted on the characteristics and advantages of LED lights,the requirements of LED lights for driving circuits,the dimming characteristics of LED lights,and the advantages of PWM dimming.Based on the research,a 12 W LED lighting driver circuit was designed using LM3402.The designed driving circuit is powered by a 48 V DC power supply,and the parameters of the main components such as the current detection resistor are given.The design method of the dimming control circuit is also provided.The designed circuit has excellent performance,and the research results have a good reference value for the design of LED driver circuits.
LED lightingconstant current drivePWM dimmingLM3402parameter calculation
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