LED switch color temperature adjustment control chip, control method, and LED illumination lamp

Abstract

The invention relates to an LED switch color temperature adjustment control chip, an LED switch color temperature adjustment control method, and an LED illumination lamp. The LED switch color temperature adjustment control chip comprises a power supply detection and control signal generation circuit, a logic state control circuit, a driving circuit and an internal power supply circuit, wherein thelogic state control circuit comprises a state information storage unit, a state temporary storage and switching unit and a control unit; and when it is detected that the switch-off-switch-on time interval of a power supply input switch is greater than a first preset duration, the control chip directly enters the logic state before the power supply input switch is switched off. By implementing theembodiment, after a favorite state is switched by a user, the state of the control switch in each time of turning on the lamp is the state before turning off the lamp last time, without needing to re-switch through the switch; and the LED switch color temperature adjustment control chip has the advantages of simple operation, convenience and capability of improving user experience.

Description

technical field [0001] The invention relates to the field of LED lighting, and more specifically relates to an LED switch color temperature control chip, an LED switch color temperature control method and an LED lighting fixture. Background technique [0002] With the continuous expansion of the application range of LED lighting, LED lighting has gradually developed from the most simple lighting function to the direction of intelligence, humanization and energy saving. In order to meet people's requirements for lighting in different scenarios, LED lighting fixtures with the function of switching color temperature came into being. At present, no matter whether the existing color temperature scheme is realized by MCU or an existing control chip, it is very complicated, and an independent detection circuit is required to detect the input switch action. Complicated circuits not only increase the cost of the driving power supply, but also increase the size of the driving power s...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is that the LED lighting fixtures in the prior art will return to the default original state every time the light is turned on, and the user needs to gradually switch to the state he likes through the opening-closing action of the switch, and the operation is cumbersome In view of the above defects, a LED switch color temperature control chip, an LED lighting fixture including the LED switch color temperature control chip, and a LED switch color temperature control method are provided

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