LED (Light Emitting Diode) constant current control circuit for one-to-many output control

A constant current control circuit, control circuit technology, applied in the direction of lamp circuit layout, electric light source, lighting device, etc., can solve the problems of high LED drive power, high energy consumption, high cost of drive power, etc., to achieve small size and high conversion efficiency , saving cost and space effect

Inactive Publication Date: 2015-06-03
XIAN HENGFEI ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In terms of cost and performance, the cost of LED drive power built by discrete components is low, but the cost of later maintenance and replacement of new drive power is high. If the application of LED drive power reaches a certain scale, the LED drive power built by discrete components The power supply is higher than the module power supply
In terms of performance, the energy consumption problem is only considered. The conversion efficiency of the drive power supply built by independent components generally reaches 90% at most, while the module can reach more than 95%, and the energy consumption is relatively large.

Method used

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  • LED (Light Emitting Diode) constant current control circuit for one-to-many output control
  • LED (Light Emitting Diode) constant current control circuit for one-to-many output control
  • LED (Light Emitting Diode) constant current control circuit for one-to-many output control

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Embodiment Construction

[0020] Such as figure 1 , Figure 4 As shown, a LED constant current control circuit with one-to-many output control is characterized by: including: filter HAM module 1, full brick module MAXI2, PRM pre-regulator module 3, PRM / VTM one-to-many output control circuit 4. Constant current control circuit 5, VTM module 6, VTM module 6 includes multiple channels, the present embodiment provides 4 channels, including VTM module 601, VTM module 602, VTM module 603, VTM module 604; AC 85V-264V full voltage Input to the input terminal of the filter HAM module 1, after filtering by the filter HAM module 1, the corrected power factor can reach more than 0.99, after the output of the filter HAM module 1 is connected to the full brick module MAXI2, the full brick module MAXI2 performs AC-DC conversion , the converted voltage is connected to the input terminal of the PRM pre-regulator module 3 for pre-regulation; the PRM / VTM one-to-many output control circuit 4 and the constant current cont...

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Abstract

The invention relates to an LED (Light Emitting Diode) constant current control circuit for one-to-many output control. The LED constant current control circuit is characterized by comprising a filter HAM (Hardware Associative Memory) module, a full-block module MAXI2, a pre-regulator module (PRM), a PRM / VTM (Voltage Transformation Module) one-to-many output control circuit, a constant current control circuit and a VTM. The LED constant current control circuit 5 comprises the PRM, a reference voltage source and the VTM, wherein a Vc end of the PRM is electrically connected with a Vc end of the VTM; the output ends OUT+ and OUT- of the PRM are respectively connected with +IN and -IN of the VTM; current sampling resistors R7 are connected to the 16-pin output end of the PRM and the -in end of the VTM to form sampling voltage I01R7, and the I01 is an output current value of the PRM. The LED constant current control circuit disclosed by the invention is set up by modularization and realizes PRM / VTM one-to-many output and constant current output by a corresponding control circuit.

Description

[0001] This case is a divisional application with an application date of 2013-12-02, an application number of 2013106303836, and an application name of "a LED drive power supply circuit". technical field [0002] The invention relates to the technical field of new energy LED driver design, in particular to an LED constant current control circuit with one-to-many output control. Background technique [0003] The existing LED drive power supply is basically built with discrete components, which has disadvantages such as short life, large volume, and high weight compared with modules. [0004] Among the discrete components, the electrolytic capacitor has the lowest lifetime. A high-quality electrolytic capacitor has a lifetime of 500,000 hours when the temperature is above 40°C. The lifetime of the electrolytic capacitor is the lifetime of the LED lighting system, which greatly affects the advantages of the LED lamp itself. [0005] The integration of discrete components is low...

Claims

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Application Information

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IPC IPC(8): H05B37/02
Inventor张建飞秦为侯彦
OwnerXIAN HENGFEI ELECTRONICS TECH