High-power LED lamp control circuit

Abstract

The invention provides a high-power LED lamp control circuit, which relates to the field of lamps, in particular to the control technical field of using a high-power LED as a light source. The high-power LED lamp control circuit comprises an alternating current voltage rectification filter circuit, a switch voltage transformation circuit, a pulse width modulation control circuit, a feedback control circuit and a secondary rectification filter circuit. The high-power LED lamp control circuit has the advantages of voltage stabilization, current stabilization, automatic protection for short circuit and open circuit, power supply temperature protection, simple production process, fewer using elements and convenient connecting and plugging, is particularly suitable for illumination control of high-power LED lamps, not only can play the light efficiency of LED lamps to the maximum extent, but also can effectively control the heating of the LED lamps and light decay.

Description

technical field [0001] The invention relates to the field of lamps, in particular to the field of control technology using high-power LEDs as light sources. Background technique [0002] With the development and maturity of LED technology, LED has the advantages of high luminous efficiency, long service life, and no pollution. At present, the technology of high-power LED with a luminous flux of 80lm / w has been very stable, and 100lm / w is also being popularized in the market, and there is a great alternative The current trend of high-power incandescent lamps, but the bottleneck restricting the popularization of high-power LEDs lies in the defects of the current control circuits: some control circuits focus on voltage regulation, some control circuits focus on current stability, and some control circuits ignore large The short circuit or open circuit of a certain LED often occurs in the use of power LEDs, which affects the entire circuit and shortens the service life of the LE...

AI Technical Summary

Problems solved by technology

[0002] With the development and maturity of LED technology, LED has the advantages of high luminous efficiency, long service life, and no pollution. At present, the technology of high-power LED luminous flux up to 80lm / w has been very stable, and 100lm / w is also popularizing the market, and there is a great alternative The current trend of high-power incandescent lamps, but the bottleneck restricting the popularization of high-power LEDs lies in the defects of the current control circuits: some control circuits focus on voltage regulation, some control circuits focus on current stability, and some control circuits ignore large The short circuit and open circuit of a certain LED often occur in the use of power LEDs, which affects the entire circuit and shortens the service life of the LED.

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