Constant current module selection for LED street lights

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Summary:

All LEDs must be powered by a constant current source, but many street lamp manufacturers are currently looking for a suitable constant current module when the LED module has been designed. As everyone knows, this design method is problematic, at least making this design not optimal. It is possible to redesign the LED module. This article describes how to select a constant current module when designing an LED street light.

How much power can the constant current drive module carry? This kind of problem is actually unanswerable. Because the power that a constant current module can carry is related to many factors. From the constant current module itself, it is mainly related to the heat dissipation requirements and heat dissipation conditions, and of course to the current drive capability of the driver chip. However, even if these have been determined, for example, the SLM2842 constant current module has been selected, then his driving ability seems to be completely certain! actually not! Although its ultimate drive capability is known, for example, its maximum switching current, its maximum input current, its maximum input voltage and maximum output voltage. However, the driving power of a constant current module is related to its heat dissipation capability, and its main efficiency is related to its working efficiency. And its work efficiency is related to many external factors, especially the user's use. Therefore, when designing or selecting LED modules, we must consider the requirements and characteristics of constant current sources.

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