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Driving circuit for LED

A driving circuit and circuit technology, applied in the direction of lamp circuit layout, light source, electric light source, etc., can solve problems such as matching specification design bottlenecks, achieve bright life, and improve power factor effects

Inactive Publication Date: 2012-08-29
HANERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since multiple components in the drive control module 11 cannot operate on a stable ground plane, the matching specifications of the multiple components are likely to cause a design bottleneck, which in turn leads to the output control signal of the LED drive switch of the control module 11 Failed to provide power save request for this power supply to help

Method used

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  • Driving circuit for LED
  • Driving circuit for LED
  • Driving circuit for LED

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0051] 1. A drive circuit, comprising:

[0052] a control module that provides a control signal to regulate the load current flowing through the load;

[0053] The voltage dividing circuit provides the first voltage to the control module, and includes:

[0054] a first resistor; and

[0055] The second resistor is connected in series with the first resistor.

[0056] 2. The driving circuit according to the first embodiment, wherein the first resistor and the second resistor are coupled to the control module.

[0057] 3. The driving circuit as described in the first embodiment, further comprising:

[0058] A bridge rectifier, located at the input end of the drive circuit, converts the AC input signal into a DC input voltage;

[0059] Inductance, used to provide circuit energy storage;

[0060] a metal-oxide-semiconductor field-effect transistor, located at the output end of the drive circuit, receives the signal output by the control module; and

[0061] The third resisto...

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PUM

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Abstract

The present invention is directed to an LED driver circuit. The LED driver circuit has a control module executing the power factor correction (PFC) by providing a divided voltage being directly proportional to the input voltage to the control module and calculating a feedback signal associated with the input signal. A design of a present LED driver circuit is defined by the requirements of a small size and high stability; the LED driver circuit of the invention substantially improves the advantages of the power factor, is better and brighter and has a longer service life, which satisfies requirements of a LED by Energy Star.

Description

technical field [0001] The invention relates to a driving circuit, in particular to a driving circuit of a light emitting diode (LED). Through the application of power factor correction (PFC), the AC power is converted into a DC power output for driving high-power LEDs and LED arrays. Background technique [0002] The driving circuit of light-emitting diode (LED) has always been the focus of discussion in electronics and electricity. Recently, due to the complete manufacturing process of luminescent materials and the strong demand in the global market, how to achieve design technology that meets the product life cycle has become a research hotspot. [0003] Light-emitting diodes (LEDs) have been in the market for a long time. At first, they were only used as red indicator lights, and then yellow, orange, green, and blue LEDs appeared at the latest to greatly expand the application level, including traffic lights, car lights, etc. And wall lighting (ambient lighting) and LED...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/02
CPCH05B45/14H05B45/375H05B45/3725
Inventor 张钦奇张荣璋
Owner HANERGY TECH