Digital multichannel linear control module, system and method
A linear control, multi-channel technology, applied in electrical components, electroluminescent light sources, lighting devices, etc., can solve the problems of limited efficiency, unequal effective life, uneven LED brightness, etc., to improve practicability and work efficiency Effect
Pending Publication Date: 2018-03-20
SHANGHAI LATRONIX TECH CORP
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Problems solved by technology
[0009] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a digital multi-channel linear control module, system and method for solving the problem of uneven brightness, unequal effective life and limited efficiency of LEDs in the prior art. limit and other issues
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[0049] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.
[0050] see Figure 2 ~ Figure 3 . It should be noted that the diagrams provided in this embodiment are only schematically illustrating the basic idea of the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the components in actual implementation. Dimensional drawing, the type, quantity and proportion of each component can be changed arbi...
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The invention provides a digital multichannel linear control module, system and method. The digital multichannel linear control method comprises the steps of carrying out analog-to-digital conversionon a sampling signal of input voltage on the basis of an analog-to-digital conversion unit to obtain an N-bit digital signal; converting the N-bit digital signal into corresponding N paths of switch drive signals on the basis of a switch drive unit, thereby controlling the actual working time of various loads within a cycle of the input voltage to be the same; and receiving a sampling signal of output current of each load on the basis of a constant-current control unit and carrying out constant-current control on the output current of the load according to the sampling signal of the output current of the load. According to the digital multichannel linear control module, system and method, the problems of unequal uniformity and reliable life caused by different brightness of each group of lamp beads and low efficiency under an existing framework are solved from the framework of a drive integration module, and the practicability of an LED is greatly improved.
Description
technical field [0001] The invention relates to the technical field of LED drive control integrated circuits, in particular to a digital multi-channel linear control module, system and method. Background technique [0002] In recent years, multi-channel linear control circuits have become a new direction for the development of LED driver integrated circuits. The multi-channel linear control circuit is a simple and effective driving scheme to control LED lighting under the condition of AC mains input. It uses a series of switch circuits to turn on or off the series LED lamp beads one by one, so that the series LED lights The positive drive voltage of the string matches the input AC mains voltage, and the constant current control of the circuit is added to meet the control requirements of LED constant current lighting. [0003] In order to enable the switch to effectively control the forward drive voltage of the series connected LED light strings to match the input voltage, t...
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Login to View More IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/14H05B45/10Y02B20/30
Inventor 严守平王小明张新辉
Owner SHANGHAI LATRONIX TECH CORP