Design of intelligent temperature control driving circuit for high power LED array

Abstract

A new type of high-power underwater lighting LED driver circuit is proposed. This design studies and designs the electrical performance stability, temperature regulation and LED array arrangement of LED array circuits. The temperature control mainly uses the temperature sensor module for detection, and the temperature feedback is timely performed by the MCU. When the temperature reaches the set temperature gradient threshold, the PWM is adjusted in time to adjust the current to achieve the brightness reduction. The purpose of heat generation is to adjust the temperature; the other point is mainly to design the voltage regulator circuit part. The stability of the circuit is very important for the LED array circuit and the peripheral circuit in this design, which also becomes the judgment circuit. One of the key indicators. This paper mainly designs the circuit stability for input voltage regulation and temperature control adjustment. Underwater illumination flux will also have certain requirements, LED array arrangement is also very important. Through the simulation experiment, the hexagonal array arrangement is adopted. For the above three points, a high-power LED driver circuit is developed. Finally, through the specific experiment to verify the operation of the circuit, the overall operation of the circuit is good, the dimming, voltage regulation is good and the efficiency is high, and the design goal is achieved.