Intelligent LED driving power supply

Abstract

The invention relates to an intelligent LED driving power supply. The input end of an EMI module is connected with a mains supply, the output end of the EMI module is connected with the input end of a rectifier module, and the output end of the rectifier module is connected with the input end of a filter module. A power conversion module and a controller module are connected with the output end of the filter module. The power conversion module, a rectifier and filter module and a photoelectric isolation module are connected to the controller module. A step-down module, the input end of a sampling module and the input end of a DC / DC module are connected to the power conversion module. The output end of the DC / DC module is connected with an intelligent control module. The intelligent control module and an LED node are connected with the step-down module. An amplification and comparison module and a reference module are connected with the output end of the sampling module. The amplification and comparison module is further connected with the photoelectric isolation module. By adopting the intelligent LED driving power supply, high voltage and low voltage can be isolated safely, the precision of constant current is high, and the lines are concise.

Description

technical field [0001] The invention relates to the technical field of LED lighting, in particular to an intelligent LED driving power supply. Background technique [0002] The intelligent LED lighting system uses modern high-tech technologies such as network control technology, automatic control technology, microelectronics technology, and power electronics technology to automatically collect various information of the system according to environmental changes, customer needs, and other conditions. The collected information is subjected to corresponding logical analysis, judgment, display and other processing to achieve the best control effect and realize an energy-saving, healthy and artistic intelligent lighting system. The driving power supply is the part that provides sufficient power for the LED node, so that the LED node lights up with a constant current and continues to work safely and reliably. [0003] In the LED lighting fixture system in the prior art, the drivi...

AI Technical Summary

Problems solved by technology

The advantage of this kind of circuit is that the power factor is high and the harmonic wave is small. The disadvantage is that there is no isolation measure between the high voltage and the low voltage. Once it is not handled properly, it will cause fatal electric shock to the human body. The step-down circuit uses separate components, and the error of each component is large. , causing the constant current accuracy is not high

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