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Control method and system for output current of LED (Light Emitting Diode) driving circuit

An LED drive and circuit output technology, applied in the electrical field, can solve the problems of low output current accuracy of the LED drive circuit, and achieve the effect of improving the accuracy

Active Publication Date: 2015-02-11
SHENZHEN CYT SEMICON TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the embodiments of the present invention is to provide a method for controlling the output current of an LED drive circuit, which aims to solve the problem of low accuracy of the output current of the LED drive circuit in the prior art due to the manufacturing process.

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  • Control method and system for output current of LED (Light Emitting Diode) driving circuit
  • Control method and system for output current of LED (Light Emitting Diode) driving circuit

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Embodiment Construction

[0013] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0014] The invention provides a method for controlling the output current of an LED drive circuit, the method is as follows: figure 1 As shown, it specifically includes the following steps:

[0015] S11, detecting the error value of the output current of the LED driving circuit;

[0016] S12. Correct the output current of the LED driving circuit according to the error value.

[0017] It should be noted that the following methods can be used to realize S11, for example, control the LED drive circuit to output a theoretical constant current value A; detect the actual output current value B of the L...

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Abstract

The invention provides a control method and system for an output current of an LED (Light Emitting Diode) driving circuit, which is suitable for the electric field. The control method comprises the following steps of: detecting an error value of the output current of the LED driving circuit; and correcting the output current of the LED driving circuit according to the error value. The technical scheme provided by the invention has the advantages of increasing the accuracy of the output current of the LED driving circuit.

Description

technical field [0001] The invention belongs to the electrical field, and in particular relates to a method and system for controlling the output current of an LED drive circuit. Background technique [0002] LED is a current device, and the accuracy of the output current of the driving circuit is getting higher and higher. At present, due to the manufacturing process of the driving circuit in my country, the accuracy of the output current can only reach ±3%, and developed countries can only guarantee ±3%. 1% accuracy. Therefore, the accuracy of the output current of the existing driving circuit is relatively low. Contents of the invention [0003] The purpose of the embodiments of the present invention is to provide a method for controlling the output current of the LED driving circuit, aiming at solving the problem of low accuracy of the output current of the LED driving circuit in the prior art caused by the manufacturing process. [0004] The embodiment of the present...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B37/02
Inventor 文茂强
Owner SHENZHEN CYT SEMICON TECH CO LTD