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LED down lamp driving controller

A technology for driving controllers and LED downlights, applied to electrical components, etc., can solve problems such as low power factor, poor performance, and poor electromagnetic performance

Pending Publication Date: 2021-05-18
郑州地铁集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose a LED downlight drive controller, which can solve the problems of low power factor, poor performance at low-voltage start-up, and poor electromagnetic performance of existing LED drivers.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as figure 1 As shown, a LED downlight drive controller, including:

[0039] The EMI filtering module 10 is used to suppress common-mode interference signals and surge signals in the input AC mains, and send the processed input AC mains to the input end of the full-bridge rectifier module 20;

[0040] The full-bridge rectification module 20 is used to rectify the input AC mains power and output it as DC power, and then deliver the DC power to the primary winding of the high-frequency step-down conversion module 40;

[0041] The feedback control module 30 uses the OB3330X chip to perform feedback control and power factor correction on the primary winding of the high-frequency step-down conversion module 40, and simultaneously controls the shutdown of the field effect transistor Q1 of the high-frequency step-down conversion module 40;

[0042] The high-frequency step-down conversion module 40 is used for stepping down the rectified direct current, and outputting it t...

Embodiment 2

[0045] On the basis of Embodiment 1, the specific circuit structure of the device is as follows figure 2 As shown, the EMI filter module 10 includes a fuse F1, a twentieth resistor R20, a first inductor L1, a third inductor L3, a fourth inductor L4, a first safety capacitor CX1, a third resistor R3, a sixth resistor R6, The seventh resistor R7 and the nineteenth resistor R19, the third inductor L3 and the fourth inductor L4 are common mode inductors. The EMI filter module can play the role of lightning protection and surge protection. At the same time, it can effectively suppress the common-mode interference signal in the AC mains transmitted by the grid, suppress the interference radiation, improve the anti-electromagnetic interference ability of the system, and will not cause power grid interference. Fluctuation interferes with the normal operation of other instruments and equipment.

[0046] One end of the fuse F1 in the EMI filter module is connected to one end of the AC...

Embodiment 3

[0079] On the basis of Example 1 and Example 2, a 60Ω / 25W resistance was used as the load for the test, and the corresponding technical parameters were adjusted according to the actual situation. The relevant data obtained can show that the LED tube provided by this example The lamp drive controller can output constant current within the allowable error range when the AC input is between 100V and 240V. The maximum output voltage is 45V. It has constant current characteristics, protects the LED lamp, and has good electromagnetic compatibility.

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Abstract

The invention belongs to the technical field of LEDs, and discloses an LED down lamp driving controller. The LED down lamp driving controller comprises an EMI filtering module used for suppressing common mode interference signals and surge signals in the input alternating-current mains supply and sending the processed input alternating-current mains supply to the input end of a full-bridge rectification module; the full-bridge rectifier module which is used for rectifying and outputting the input alternating-current mains supply into direct current and then transmitting the direct current into a primary winding of a high-frequency step-down conversion module; a feedback control module which is used for performing feedback control and power factor correction on the primary winding of the high-frequency step-down conversion module by using an OB3330X chip, and simultaneously controlling the turn-off of a field-effect transistor in the high-frequency step-down conversion module; and the high-frequency step-down conversion module which is used for carrying out step-down, voltage-stabilizing and constant-current processing on the rectified direct current and then outputting the direct current to the LED module. The LED down lamp driving controller of the invention has the advantages of low current peak-wave ratio, high cost performance, high power factor, good electromagnetic compatibility and no pollution to illumination.

Description

technical field [0001] The invention relates to the technical field of LEDs, in particular to an LED downlight drive controller. Background technique [0002] With the requirement of green energy saving, the lights used in more and more places are pendant downlights with LED light sources. However, the LEDs used now often appear to be off or flicker due to the problem of the driver, and the frequency of damage to the driver High, requires frequent replacement by maintenance personnel, and requires a lot of spare parts, which is not easy to maintain. [0003] However, most of the inductive ballast drivers used in the market now have many disadvantages, such as simple structure and long life, frequent flickering, low power factor, poor performance when starting at low voltage, and high energy consumption. Therefore, an electronic ballast driving power supply with constant voltage and constant current output is particularly important for the development of LED lamps. Content...

Claims

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Application Information

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IPC IPC(8): H05B45/385H05B45/36H05B45/355H05B45/50H05B45/345H05B45/34
CPCH05B45/385H05B45/36H05B45/355H05B45/50H05B45/345H05B45/34
Inventor 杨辉任艳江巩奇李乾坤张继哲钮佳丽吕国伟于世杰王辉袁艳玲李翔然韩旭龙刘海荣杨红波卜严俊周辉王志超杜世通吕兴瑞闫伟涛魏振兴张克张阳李旭孔祥亮
Owner 郑州地铁集团有限公司
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