Temperature compensation method for LED drive power supply

Abstract

The invention relates to a temperature compensation method for an LED drive power supply. The method comprises the following steps: implanting a semiconductor diode D into an LED light source module and packaging the semiconductor diode D and the LED light source module on an LED aluminum substrate together; outputting an LED driver to the LED light source module, conducting heat generated on the LED light source module to the LED aluminum substrate through a heat-conducting material, and finally allowing heat to be radiated to the atmosphere by radiating fins. The method has the benefits that real-time feedback can be realized to enable an LED light source to be amplified timely so as to accurately stabilize the temperature of an LED lamp, and the output of the driver can be increased when the environmental temperature rises and exceeds a set control temperature or can be reduced when the environmental temperature reduces and exceeds the set control temperature. At high temperature, luminous flux and power consumption of the LED lamp can be appropriately reduced without affecting the use, so that problems of luminous decay and shortening of the service life of the LED lamp due to overheating are avoided; at low temperature, the luminous flux is increased in the safe range to obtain a better illuminating effect, so that the LED always works stably and reliably at a constant temperature.

Description

technical field [0001] The invention relates to the technical field of electronic applications, in particular to a method for temperature compensation of an LED driving power supply. Background technique [0002] High-power LED lamps generally work in a constant current drive state. When the external environment temperature changes, the forward voltage of the LED increases or decreases due to its own temperature characteristics, and the LED drive power supply changes the output voltage accordingly, basically maintaining the output current and output power. constant. The disadvantage of the above technology is: in actual application, the temperature rise of the whole lamp brought by the ambient temperature, this constant current working mode can only be passively accepted, and it is impossible to make corresponding cooling improvement measures. In this way, the temperature of the LED chip is greatly affected by it. This shortens its life and accelerates light decay, thus lim...

AI Technical Summary

Problems solved by technology

The disadvantage of the above technology is: in actual application, the temperature rise of the whole lamp brought by the ambient temperature, this constant current working mode can only be passively accepted, and it is impossible to make corresponding cooling improvement measures. In this way, the temperature of the LED chip is greatly affected by it. It shortens its life and accelerates light decay, which limits the development of LED lighting industry

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