Lighting power supply device

Abstract

The invention discloses a lighting power supply device, which is suitable for providing output power for multiple paths of lighting loads. The lighting power supply device comprises a filtering and rectifying module, a plurality of power modules and a dimming module, wherein the filtering and rectifying module outputs a rectified voltage, the power modules are arranged at one end of the lighting power supply device in parallel, the filtering and rectifying module is arranged adjacent to the power modules, and each power module comprises a PFC unit, a PFC control unit, a DC / DC conversion unit and a DC / DC control unit, wherein the PFC unit is used for performing power factor correction on the rectified voltage and outputting the corrected voltage; the PFC control unit is used for controllingthe PFC unit; the DC / DC conversion unit is used for converting the corrected voltage into an output voltage; the DC / DC control unit is used for controlling the DC / DC conversion unit; and the dimmingmodule is electrically coupled to the DC / DC control unit.

Description

technical field [0001] The present invention relates to a lighting power supply device, in particular to a modular lighting power supply device. Background technique [0002] Usually in sports fields, large warehouses, fishing boats and other occasions, high-power LED lighting is inseparable. However, the input voltage range of general high-power LED lighting power supply is very wide, up to 520VAC, so it is necessary to select a device with a withstand voltage of 1KV. For high-voltage silicon MOS, there are not only very few manufacturers to choose from, but also the price is expensive; And most of this kind of lighting power supply is naturally cooled, and the working environment temperature can reach -40°~+70°. Some applications have lightweight requirements, so the power supply cannot be filled with glue and needs to be completely dissipated by the shell, making the entire lighting power supply The heating problem of the device needs to be well resolved; at the same tim...

AI Technical Summary

Problems solved by technology

[0005] Disadvantages of the current practice: For the structure of high-power LED lighting power supply, if the output is multi-channel LED lights, it is necessary to use an external shunt to divide the current to supply power to the multi-channel LED lights 13 respectively

Due to the wide input voltage range of high-power LED lighting power supply, it is necessary to use MOS tubes with high withstand voltage and high current. This kind of MOS tubes is not only expensive, but also has few manufacturers to choose from. At the same time, each device generates serious heat , the heat dissipation method of the device must be continuously optimized, and the heat dissipation fins of the power supply housing need to be enlarged, which not only increases the height of the high-power LED lighting power supply, but also makes the weight of the entire lamp exceed the customer's requirements. At the same time, the lighting power supply design of this structure Inflexible, difficult to be compatible with stadium light specifications of different output power levels

In addition, for lighting power supplies that require a color-tuning function, this structural approach cannot satisfy

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