How to Choose Dimmable LED Power Supply

With the wide application of LED lamps, various application places have higher and higher requirements for lighting environment, so the demand for lighting control in the market is increasing, especially in hotel engineering lighting, smart home, commercial lighting, outdoor lighting and so on. In addition to the requirements for the color temperature, CRI and color tolerance of lamps, lighting designers need to adjust the brightness or color of lamps, and the realization of these functions often requires the cooperation of some control system manufacturers and dimming power supply manufacturers. Generally, the understanding of dimming power supply and dimming control system by lamp manufacturers and engineers is basically blank, they often encounter a problem in the project: why can't the dimming power supply I purchased realize the dimming function?

To find out what the problem is, we need to know some questions about dimming power supply:

1、 Whether the light source needs constant current dimming power supply control or constant voltage dimming power supply control must be made clear. If it is mismatched, not only the dimming function cannot be realized, but also there are problems with normal lighting;

2、 What you need is only dimming function or dimming and color matching function. The dimming function only needs to be equipped with one channel dimming power supply, and the dimming and color matching function needs to be equipped with dimming power supply of two channels or more channels;

3、 Which dimming mode is the purchased dimming power supply, the forward phase mode of triac or the reverse phase mode of triac? Is it 0-10V dimming or 1-10V dimming? Is it Dali protocol dimming or PWM digital dimming? Is it wireless Bluetooth dimming or WiFi dimming? Whether it is ZigBee system dimming or DMX RGB dimming, etc;

4、 The power of the dimming power supply and the power of the light source should correspond to each other before they can be used together;

5、 Voltage: the output voltage range of the dimming power supply and the sum of the series voltage of the lamp beads must match well, and the lamp bead voltage must be within the output voltage range of the dimming power supply. If the lamp bead voltage is outside the output voltage range of the dimming power supply, it is easy to appear under voltage and over-voltage protection, resulting in the failure of the lamp to turn on normally or flash, even if it can turn on normally, Jitter will also occur during dimming;

6、 Current: the sum of the output current of the dimming power supply and the parallel current of the lamp bead must be matched well. The output current of the dimming power supply cannot exceed the rated current of the lamp bead. If the output current of the dimming power supply is greater than the rated current of the lamp bead, it is easy to overheat the light source chip and burn the lamp bead;

Generally, if the dimming function cannot be realized after the above problems are confirmed, it is necessary to consider whether there is an error in the wiring in the project. How to correctly select the dimming power supply you need also depends on the actual application. Our professional team will support you here for any questions.