Novel intelligent high-precision LED driving power source

Abstract

The invention discloses a novel intelligent high-precision LED driving power source which comprises an alternating-current input rectifying filtering unit, a flyback DC / DC power source conversion unit, a secondary rectifying unit, a ZIGBEE dimming unit, a MAX16822 constant current unit, a voltage sampling unit, a current Hall sampling unit, an MSP430F149 single chip microcomputer unit, an auxiliary temperature sampling module, a liquid crystal display module, a keyboard input module, a GSM wireless communication module, an auxiliary power source module of a single chip microcomputer, an I / O extension module, a crystal oscillation module and an auxiliary protection circuit. The novel intelligent high-precision LED driving power source has the advantages that the circuit structure is novel, the power source efficiency is high, the output current precision is higher due to the adoption of a MAX16822 constant current chip, the digitalized degree and the intelligentized degree are high, the MSP430F149 single chip microcomputer fully participates in the closed-loop control over the output current and the output voltage, the man-machine interaction is strong, and due to the fact that an ultracrystalline magnetic core is adopted in a transformer, the size is small.

Description

technical field [0001] The invention relates to an LED driving power supply for lighting, which belongs to the field of electronic technology, especially the field of high-frequency switching power supply. Background technique [0002] With the development of lighting technology, LED lighting technology has been widely used in production and life due to its advantages of energy saving, environmental protection and long life. [0003] LED is a semiconductor light-emitting device that converts electrical signals into optical signals. It has forward conduction, reverse cut-off and overvoltage breakdown characteristics. The brightness of the LED lamp should be selected according to the purpose to determine the power driving mode of the LED power supply, etc. The driving power supply should meet the requirements of energy saving, green economy, and high efficiency. Energy saving is reflected in the low power consumption of the drive power supply; green economy is reflected in t...

AI Technical Summary

Problems solved by technology

[0006] The invention mainly aims at the disadvantages of high-power LED power supply controlled by ordinary single-chip microcomputer, the output current accuracy is low, the single-chip microcomputer does not fully participate in the feedback control of the output electric energy of the drive power supply, the degree of intelligent digitization is low, and the transformer volume is large, etc., and a kind of output current accuracy is designed. High, the single-chip microcomputer fully participates in the closed-loop feedback control of the output power of the drive power supply, a new intelligent high-precision LED drive power supply with a high degree of intelligence and digitalization, and a small transformer

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