Driving power system with temperature control function and temperature control method thereof

Abstract

The invention provides a driving power system with the temperature control function and a temperature control method thereof. The driving power system comprises a temperature detection module electrically connected with a current input node in the driving power system, an external-current control module electrically connected with the current input node, an internal-current control module respectively and electrically connected with the current input node and a logic control module, the logic control module electrically connected with a logic response module and the logic response module respectively and electrically connected with an input voltage end and a load. As the low-cost and high-accuracy temperature detection module is additionally arranged, it is achieved that the power output power is dynamically regulated while the temperature in a lamp can be detected, dynamic balance between the temperature and the output power in the lamp is kept, and the driving power system and the reliability of the lamp are further improved and promoted.

Description

technical field [0001] The invention relates to the technical field of integrated circuit driving, in particular to a driving power system with temperature control function capable of accurately controlling the temperature inside a lamp and a temperature control method thereof. Background technique [0002] With the popularization of LED lighting, the output power of LED lamps is getting higher and higher, and the temperature inside the lamps is getting higher and higher. At the same time, with the rapid reduction of the cost of LED lamps, the heat dissipation materials of the lamp housings that make up LED lamps have gradually changed from traditional aluminum housing materials with good heat dissipation performance to plastic-clad aluminum or complete plastic housing materials. The need for accurate control of the internal temperature of the lamp. There are more and more cases of failure due to the temperature inside the lamp exceeding the temperature limit of various com...

AI Technical Summary

Problems solved by technology

[0003] In the existing technology, the temperature control circuit is fully integrated into the chip. Due to the limitation of the integrated circuit technology, very accurate resistance matching can be realized inside the integrated circuit chip, but it is difficult to achieve a very accurate absolute resistance value (the absolute value of the internal resistance of the general integrated circuit). Value deviation exceeds +-20%)

Due to the deviation of the absolute value of the resistance, it is difficult to realize an accurate temperature control circuit inside the integrated circuit, and the existing technology cannot realize the external adjustment of the starting point of temperature protection

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