LED purification lights AC power driven LEDs are feasible in a single wire connection, but a single string connection is only a small part of LED driver applications, and most have parallel connections. In the case of parallel LED driving, the branch LEDs in the entire constant current design do not necessarily work in a constant current state, and the LED currents of the entire LED purification lamp are interdependent.
In high-current designers, such as LED purification lamp design, the designer will not parallel multiple LEDs directly, because the danger will occur immediately. The usual practice is to carry out constant voltage first, and then carry out DC constant current, which is completed by two-stage design. We know that the DC drive efficiency is under reasonable voltage and load conditions, then how to ensure that the amount of LEDs or LEDs loaded varies with temperature. within reason? How can customers flexibly change the number of LED drivers? To solve the above problems, it is necessary to design an AC and DC constant current feedback mechanism, but so far there is no technical condition.
Another way for LED purification lamps to improve driving efficiency is that distributed constant current drivers can be used to provide optocoupler driving capabilities, where one branch can be represented as the entire branch. Distributed constant current branches can communicate with each other to realize adaptive linkage mechanism, compatible with the functions of control and data read and write interfaces. The peripheral design is zero device, and the output voltage of the power supply matches the load impedance. The value stream source is integrated with the light source.
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