AC powered LED purification fixtures are feasible in single string connections, but single string connections are only a small subset of LED driver applications, most of which have parallel connections. In the case of parallel LED driving, the branch LEDs of the constant current design do not necessarily work in a constant current state, and the LED currents of the entire product interact with each other.
In the design of high-current LED purification lamps, such as the design of LED cleaning lamps, the designer will not directly connect multiple LEDs directly, because such a danger will occur immediately. The usual practice is to achieve constant voltage and DC constant current through the design of these two levels. We know that the efficiency of a DC drive is based on reasonable voltage and load conditions, so how to ensure that the load LED or the number of LEDs varies with temperature.
within reason? How can customers flexibly change the number of LED purification lamps driven? In order to solve the above problems, we need to design a feedback mechanism from AC to DC constant current, but so far there is no such technical condition.
Another way is to use distributed constant current drivers to provide LED purification luminaire optocoupler drive capability, one of which can be used as a representative of all branches. Distributed constant current branches can communicate with each other to realize adaptive linkage mechanism, which is compatible with control and data read and write interface functions. In addition, the peripheral design is zero device, and the power output voltage matches the load impedance. The numerical flow source is integrated with the light source.
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