A LED lighting drive current linear adjustment and dimming control circuit

一种调光控制电路、LED照明的技术，应用在电光源、照明装置、电致发光光源等方向，能够解决电路可靠性降低、结构复杂、增加成本等问题

Active Publication Date: 2021-07-16
WUXI AOLIJIE TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Generally, when driving linear LED lighting, the industry basically only pays attention to the control of the lamp bead current. When they are combined with a thyristor dimmer, an additional dimming control IC is needed, which not only becomes complicated in structure, but also increases the cost
In addition, when the external power supply voltage fluctuates and rises, its LED lamp beads and driver IC will withstand high voltage impact, which will cause device damage and reduce circuit reliability

Method used

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  • A LED lighting drive current linear adjustment and dimming control circuit
  • A LED lighting drive current linear adjustment and dimming control circuit
  • A LED lighting drive current linear adjustment and dimming control circuit

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Embodiment Construction

[0018] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0019] figure 1 It is a structural block diagram of an LED lighting drive current linear adjustment and dimming control circuit according to an embodiment of the present invention; figure 2 It is a circuit diagram of an LED lighting driving current linear adjustment circuit according to an embodiment of the present invention. refer to Figure 1-Figure 2 , the present invention provides a LED lighting drive current linear adjustment and dimming control circuit, the linear current adjustment module can control the current flowin...

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Abstract

The present invention provides a LED lighting drive current linear adjustment and dimming control circuit. The LED lighting driving current linear adjustment and dimming control circuit includes an AC power supply module, an LED module, a driver IC, a dimming control module and a linear current adjustment module. When the input voltage increases, the linear current adjustment module can control the current flowing through the LED module to decrease, so as to achieve the balance of input power, and then improve its linear adjustment rate; Change the internal reference voltage of the driver IC to change the current of the LED module, and cooperate with the maintenance current drive part to open and close the maintenance current path, so that it can be applied to thyristor dimming applications, and the structure is compatible with 0‑10V And PWM (Pulse Width Modulation; Pulse Width Modulation) drive mode, which can improve applicability.

Description

technical field [0001] The invention relates to a linear adjustment and dimming control circuit of LED lighting driving current. Background technique [0002] Generally, when driving linear LED lighting, the industry basically only pays attention to the control of the lamp bead current. When they are combined with a thyristor dimmer, an additional dimming control IC is needed, which not only becomes complicated in structure, but also increases the cost. In addition, when the external power supply voltage fluctuates and rises, its LED lamp beads and driver IC will withstand high-voltage shocks, which will cause device damage and reduce circuit reliability. Contents of the invention [0003] The present invention aims at solving one of the above technical problems at least to a certain extent or at least providing a useful commercial choice. For this reason, the object of the present invention is to propose a LED lighting drive current linear adjustment and dimming control...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B45/30H05B45/395H05B45/345H05B44/00
CPCH05B45/10H05B45/395Y02B20/30
Inventor 周志城
Owner WUXI AOLIJIE TECH
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