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Phase-cut dimming control circuit and lighting control device

A lighting control and phase-cut dimming technology, which is applied to lighting devices, lamp circuit layout, light sources, etc., can solve the problems of energy waste, damping circuit energy consumption, energy consumption, etc., and achieve the effect of not affecting the dimming performance

Inactive Publication Date: 2014-03-26
OSRAM GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the damping circuit dissipates energy
When the dimmer is not connected, the damping circuit no longer works on the dimmer, but it will continue to consume energy, resulting in energy waste

Method used

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  • Phase-cut dimming control circuit and lighting control device
  • Phase-cut dimming control circuit and lighting control device
  • Phase-cut dimming control circuit and lighting control device

Examples

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Embodiment Construction

[0017] Examples of the present disclosure will now be described more fully with reference to the accompanying drawings. The following description is merely exemplary in nature and is not intended to limit the disclosure, application or uses.

[0018] Example embodiments are provided so that this disclosure will be thorough, and will fully convey the scope to those who are skilled in the art. Numerous specific details are set forth such as examples of specific components, devices and methods, to provide a thorough understanding of embodiments of the present disclosure. It will be apparent to those skilled in the art that specific details need not be employed, that example embodiments may be embodied in many different forms, and that neither should be construed to limit the scope of the disclosure. In some example embodiments, well-known processes, well-known structures, and well-known technologies are not described in detail.

[0019] When an element or layer is referred to a...

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Abstract

The invention relates to a phase-cut dimming control circuit and a lighting control device. The lighting control device comprises a rectifying unit, a damping circuit, a conversion unit and a phase-cut dimming control circuit. The rectifying unit can be used to perform rectification on an input voltage to obtain a rectified voltage. The damping circuit can be used to attenuate the oscillation of a current following through a dimmer. The conversion unit can be used to convert the rectified voltage into a control signal to control the light emitting of a light-emitting diode. The phase-cut dimming control circuit can be used to make the damping circuit stop operating when the input voltage is a non-phase-cut voltage and make the damping circuit operate when the input voltage is a phase-cut voltage. Specifically, the phase-cut dimming control circuit may comprise a detection unit, a switching control unit and a switching unit. The detection unit can be used to detect the rectified voltage to acquire a detection signal indicating whether the input voltage is the non-phase-cut voltage or the phase-cut voltage. The switching control unit can be used to output a switching signal based on the detection signal. The switching unit can be used to make the damping circuit operate or stop operating based on the switching signal.

Description

technical field [0001] The present disclosure relates to the technical field of lighting control devices, in particular to a phase-cut dimming control circuit and a lighting control device having the phase-cut dimming control circuit. Background technique [0002] This section provides background information related to the present disclosure which is not necessarily prior art. [0003] A lighting control device with a phase-cut dimming function is usually provided with a damping circuit. When the dimmer is connected, the damping circuit can attenuate the oscillation of the current flowing in the dimmer, so as to prevent the thyristor in the dimmer from being turned off abnormally, so as to achieve better dimming performance. However, damping circuits consume energy. When the dimmer is not connected, the damping circuit no longer acts on the dimmer, but continues to consume energy, resulting in wasted energy. Contents of the invention [0004] This section provides a gen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/02
Inventor 戴雪维李妍刘亚平魏泽科
Owner OSRAM GMBH
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