Suitable Converter Suitable for LED Integrated Light Source Modules

Because the drive circuit in the optoelectronic integrated LED lighting module is combined with the LED integrated light source module, the life of the two modules will affect the service life of the entire lighting module. If the designer wants to extend the effective use time of the entire LED lighting module, in addition to selecting the LED light source with a long -acting life span, try to extend the life of the drive circuit. The common high -voltage LED driver circuit architecture on the market can be roughly divided into three categories. The first is to use the circuit architecture of the current -limiting resistor. The second is the circuit architecture of the switching converter. Drive circuit architecture. Among them, the circuit architecture of the current -limiting resistance is mainly regulated by the series of LEDs through series resistance. Therefore, the LED current will change with changes in the input voltage, producing the disadvantages that cannot be maintained at a fixed value. At present The LED drive circuit replaced. As for the circuit architecture that adopts the exchange converter and the other two other types, it can be found that its advantages of high circuit conversion efficiency, and can meet any situation of the input voltage that is greater than, less than or equal to the output voltage according to different circuits types. However, the circuit architecture of the exchange converter must use magnetic elements to reach energy transmission. Therefore, the circuit is large and complicated, and it must be imported to more external discrete components. Drive circuit. There is also a linear fixed -current LED -drive circuit architecture. Because there is no additional energy storage element, the circuit design can be simplified. Therefore, the advantages of small collective accumulation, low cost, and low external discrete components are used. The ideal choice of the module.