Constant current output control circuit used for LED lamp lighting driving, constant current output control method used for LED lamp lighting driving and LED device

A constant current output and control circuit technology, applied in lighting devices, electric light sources, electrical components, etc., can solve problems such as low efficiency, complex circuits, and many circuit components, and achieve the effect of solving low efficiency

Pending Publication Date: 2018-09-14
SHENZHEN SUNMOON MICROELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a constant current output control circuit, method and LED device for LED lighting driving, aiming to solve the problems of low efficiency and complex circuits caused by many circuit components in the existing LED lighting driving technology

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  • Constant current output control circuit used for LED lamp lighting driving, constant current output control method used for LED lamp lighting driving and LED device
  • Constant current output control circuit used for LED lamp lighting driving, constant current output control method used for LED lamp lighting driving and LED device
  • Constant current output control circuit used for LED lamp lighting driving, constant current output control method used for LED lamp lighting driving and LED device

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[0021] 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.

[0022] The above-mentioned constant current output control circuit, method and LED device for LED lamp lighting drive adopt the characteristic that the capacitor voltage cannot be changed suddenly, form a constant current charging, constant current detection, and based on capacitor charging and discharging, and can realize constant current output . First, the AC input terminal inputs AC power (90-265V AC, 50 / 60Hz), and undergoes full-wave rectification to form an unfiltered DC power; then, the external capacitor is charged and the external LED light is charged through the internal high-voltage cons...

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Abstract

The invention belongs to the technical field of the electronic circuit, and provides a constant current output control circuit used for LED lamp lighting driving, a constant current output control method used for LED lamp lighting driving and an LED device. The AC signal outputted by an AC power supply is rectified by a rectification module and then a DC signal is outputted; and the capacitor is charged and the control signal is outputted through a control module according to the DC signal so as to drive an LED lamp string and detect and control the current flowing through the LED lamp string.Therefore, the effect of performing constant current driving on the LED lamp string by using few devices can be realized, the circuit cost can be reduced and the efficiency of the driving mode is high, and thus the problems of low efficiency and complex circuit caused by high number of circuit components of the present LED lamp lighting driving technology can be solved.

Description

technical field [0001] The invention belongs to the technical field of electronic circuits, and in particular relates to a constant current output control circuit, a method and an LED device for LED lighting driving. Background technique [0002] In recent years, with the development of LED lighting technology, various driving technologies emerge in an endless stream, but with the continuous expansion of application fields, the requirements for driving are becoming more and more special, such as: size, conversion efficiency and other requirements And so on, are subject to the corresponding constraints. At the same time, when factors such as cost sensitivity and circuit reliability appear in some LED lighting fields, although some existing drivers have excellent circuits, they still cannot avoid cost issues, inductive components, and too many electrolytic capacitive devices. ; And some circuits are relatively simple, directly replaced by linear drive, the disadvantage is tha...

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/40H05B45/00Y02B20/30
Inventor郭伟峰李照华
OwnerSHENZHEN SUNMOON MICROELECTRONICS