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A method for LED lamp driving to simultaneously adapt to mains input and electronic ballast input

A technology of electronic ballasts and LED lamps, which is applied in the direction of electric light sources, electrical components, electroluminescent light sources, etc., and can solve the problems of large differences in LED light flux, different current impedance characteristics, and large differences in luminous flux.

Inactive Publication Date: 2019-06-21
HUIZHOU SYHDEE MANUFACTORY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. Due to the different current impedance characteristics of the electronic ballast input and the mains input, the luminous flux output by the LED lamp is quite different;
[0006] 2. There are also differences in the output current of different electronic ballasts, resulting in a large difference in the output luminous flux of the LED lamp when the current is input.

Method used

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  • A method for LED lamp driving to simultaneously adapt to mains input and electronic ballast input
  • A method for LED lamp driving to simultaneously adapt to mains input and electronic ballast input

Examples

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Embodiment 1

[0027] Such as figure 1 As shown, this embodiment provides a method for driving an LED lamp to simultaneously adapt to mains input and electronic ballast input, which is characterized in that it includes the following steps:

[0028] Step S101: Detect the turn-off time of the power switch, and determine the driving state according to the turn-off time; unless otherwise specified, the turn-on and turn-off time of the power switch will vary with various conditions to ensure that the converter works at the critical inductor current Continuous mode.

[0029] Step S102: When the driving state is electronic ballast driving, adapt the electronic ballast input current.

[0030] Specifically, in step S101, the turn-off time of the power switch is detected, and the driving state is determined according to the turn-off time. Specifically,

[0031] Detect the power switch tube within 0.5 to 1 mains cycle to obtain multiple turn-off times;

[0032] Compare each turn-off time to obtain the amount o...

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Abstract

The invention relates to the technical field of LED lamp driving, in particular to a method for LED lamp driving to simultaneously adapt to mains power input and electronic ballast input. The method includes the following steps: step S101, detecting the off time of the power switch tube, and judging the driving state according to the off time; step S102, when the driving state is electronic ballast driving, adapting the input current of the electronic ballast. Applying the technical solution of this embodiment, the driving state is determined by detecting the turn-off time of the power switch tube, and no adjustment is made when it is in the state of mains power input. When the electronic ballast is in the input state, the input current is matched and adjusted. The application of this technical solution can make the LED lamp drive adapt to the current input by the mains power input and the electronic ballast, and maintain the consistency of the luminous flux.

Description

Technical field [0001] The present invention relates to the technical field of LED lamp driving, in particular to a method for LED lamp driving to simultaneously adapt to mains input and electronic ballast input. Background technique [0002] Light-Emitting Diode (LED) is a semiconductor electronic component that can convert electrical energy into light energy. The principle of Cuoguo LED has led to a large number of new products, and LED lights are just one of them. With the widespread popularity of LED lights, "LED" has become synonymous with LED lights in people's minds. [0003] Luminous flux (luminous flux) refers to the radiant power that the human eye can feel. It is equal to the product of the radiant energy of a certain band per unit time and the relative viewing rate of the band. The unit of luminous flux is "lumens". Luminous flux is usually expressed by Φ. [0004] The current input of the existing LED lamp driving control mainly includes two types: direct mains input...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/00H05B45/37
Inventor 高炜
Owner HUIZHOU SYHDEE MANUFACTORY CO LTD