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Control device, led light emitting device including the same, and control method

A technology for controlling equipment and power supply, applied in electroluminescent light sources, control/regulating systems, light sources, etc., and can solve problems such as noise

Active Publication Date: 2014-09-24
FAIRCHILD KOREA SEMICON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the power switch S is erroneously controlled, noise is generated by the switching operation of the power switch S, and the input voltage does not decrease close to 0 volts

Method used

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  • Control device, led light emitting device including the same, and control method
  • Control device, led light emitting device including the same, and control method
  • Control device, led light emitting device including the same, and control method

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Embodiment Construction

[0043] In the following detailed description, only a few exemplary embodiments of the present invention have been shown and described, by way of illustration only. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and descriptions are to be regarded as illustrative in nature and not restrictive. The same reference numerals denote the same elements in the specification.

[0044] In this specification and the following claims, when it is described that an element is "coupled" to another element, the element may be "directly coupled" to the other element or "electrically coupled" to the other element through a third element. Additionally, unless expressly stated to the contrary, the word "comprise" and its equivalents should be understood to imply the inclusion of stated elements but not to exclude the inclusion of other...

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PUM

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Abstract

The invention relates to a switch operation control device of a power switch, an LED lighting device comprising the control device and a control method. The control device detects a zero-crossing time when the voltage at the input terminal of the power switch becomes zero voltage, generates a reference signal synchronized with the voltage at the input terminal of the power switch by using the detected zero-crossing time, and During the blocking period corresponding to the zero-crossing time, the first voltage greater than the zero voltage is used to compensate the generated reference signal.

Description

[0001] Cross References to Related Applications [0002] This application claims priority and benefit from Korean Patent Application No. 10-2010-0014309 filed in the Korean Intellectual Property Office on February 17, 2010, the entire contents of which are incorporated herein by reference. technical field [0003] The present application relates to a control device for controlling switch operation, an LED lighting device including the control device and a control method. Background technique [0004] A buck converter includes a diode bridge to rectify the AC input. In particular, a buck converter without a bulk capacitor varies the rectifier diode output voltage according to the load connected to the buck converter. The rectifier diode output voltage is generated by rectifying the AC input to the buck converter. Hereinafter, the output voltage of the rectifier diode is referred to as the input voltage. [0005] Also, the load connected to the buck converter depends on th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/08H02M3/155H05B37/02
CPCH02M1/083Y02B20/346Y02B20/348H05B33/0818H05B45/375Y02B20/30G05F1/10
Inventor 曹烓铉郑旼昊朴星玧金东焕
Owner FAIRCHILD KOREA SEMICON