Current regulation method and system, pre-driver module and programmable logic gate array

A technology of driving modules and programming logic, applied in the field of circuits, can solve problems such as speeding up the damage of light bulbs, and achieve the effect of preventing overload use and slowing down the speed of damage.

Inactive Publication Date: 2014-03-19
GUANGDONG VTRON TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a current adjustment method and system, a pre-stage drive module and a programmable logic gate array, which can solve the problem of accelerated bulb damage caused by overloading of good LED bulbs when LED bulbs are damaged

Method used

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  • Current regulation method and system, pre-driver module and programmable logic gate array
  • Current regulation method and system, pre-driver module and programmable logic gate array
  • Current regulation method and system, pre-driver module and programmable logic gate array

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Embodiment Construction

[0018] Embodiments of the present invention provide a current adjustment method and system, a front-stage drive module and a programmable logic gate array, which can prevent a good LED bulb from being overloaded when an LED bulb is damaged.

[0019] Please refer to figure 1 , an embodiment of the current adjustment method in the embodiment of the present invention includes:

[0020] 101. The pre-stage drive module detects the current value of the LED driven by the pre-stage drive module;

[0021] In this embodiment, the pre-stage drive module drives at least two LEDs, and each LED in the at least two LEDs is connected in parallel. In practical applications, the pre-stage drive module can control the current value of each LED driven by the pre-stage drive module. To detect, it is also possible to detect the current value of the driven part of the LED.

[0022] 102. The pre-stage drive module transmits the detected current value of each LED to the programmable logic gate array...

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Abstract

An embodiment of the invention discloses a current regulation method and system, a pre-driver module and a programmable logic gate array. The current regulation method comprises the steps of detecting current values of LEDs driven by the pre-driver module through a pre-driver module, transmitting the detected current value of each LED to the programmable logic gate array, enabling the programmable logic gate array to adjust the drive current values output by the pre-driver module according to the detected current value of each LED and threshold values, and then combining the adjusted drive current values transmitted by the programmable logic gate array with the adjusted drive current values output by at least two driven LEDs. Therefore, when a certain LED is damaged, the pre-driver module can adjust the output drive current values to prevent good LED lamps from being used in an overload mode and further the LED damage speed is reduced.

Description

technical field [0001] The embodiments of the present invention relate to the field of circuits, and in particular to a current adjustment method and system, a pre-stage drive module and a programmable logic gate array. Background technique [0002] Large-screen digital light processing (DLP, Digital Light Processing) splicing walls have entered the era of light-emitting diode (LED) light sources. The LED light source is characterized by high-current drive. The brightness is proportional to the value of the driving current, and the heat generation is also proportional to the current. [0003] At present, the market has higher and higher requirements for brightness, and the LED light source is gradually upgraded from a single lamp mode to a multi-lamp parallel mode to carry a larger current, thereby producing greater brightness. Inside, multiple small LED light bulbs are packaged, and the rated current carried by each small LED light bulb is the same. At present, the driver m...

Claims

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Application Information

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IPC IPC(8): G09G3/00G09G3/32H05B37/03
Inventor 郑维梁红涛叶仰宏
Owner GUANGDONG VTRON TECH CO LTD
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