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LED driving device and control method thereof

An LED driver and LED circuit technology, applied in lighting devices, lamp circuit layout, electrical components and other directions, can solve the problems of insufficient brightness, high cost, poor heat dissipation effect, etc. Effect

Inactive Publication Date: 2012-07-25
SUZHOU HETEC ELECTRONICS TECH CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most of the LED driving devices on the market have problems such as insufficient brightness, high power, poor heat dissipation, fast light attenuation, and high cost.

Method used

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  • LED driving device and control method thereof
  • LED driving device and control method thereof
  • LED driving device and control method thereof

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] figure 1 It is a schematic diagram of the circuit block of the LED driving device of the present invention; figure 2 It is a circuit schematic diagram of the power conversion unit in the LED driving device of the present invention.

[0025] See figure 1 and figure 2 , the LED driving device provided by the present invention includes a power conversion unit, a microprocessor controller 5 and an LED circuit 6, wherein the power supply terminal of the microprocessor controller 5 is connected to the power conversion unit, and the output terminal is connected to the LED circuit 6, and the power supply The conversion unit includes a pulse transformer 3 and a switch control circuit 2. The primary winding on the input side of the pulse transformer 3 is connected to the rectifier and filter circuit 1 through the switch control circuit 2, and the seco...

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Abstract

The invention discloses an LED driving device and a control method thereof. The LED driving device comprises a power conversion unit, a microprocessing controller and an LED circuit, wherein the power conversion unit comprises a pulse transformer and a switch control circuit, a primary winding at the input side of the pulse transformer is connected with a rectifying and filtering circuit through the switch control circuit, a secondary winding and an auxiliary winding at the output side of the pulse transformer are connected with a power end of the microprocessing controller through a constant-voltage control circuit, and the output end of the microprocessing controller is connected with the LED circuit. According to the LED driving device and the control method thereof, a switch signal of a mechanical lamp switch can be acquired by the switch control circuit, the microprocessing controller drives the LED circuit for dimming, therefore, the heat dissipation effect is improved, the power consumption is reduced and the brightness is improved.

Description

technical field [0001] The invention relates to a driving circuit and a control method thereof, in particular to an LED driving device and a control method thereof. Background technique [0002] LED (Light Emitting Diode), light-emitting diode, is a solid-state semiconductor device that can directly convert electricity into light. The heart of LED is the wafer of a semiconductor, and one end of wafer is attached on a bracket, and one end is negative pole, and the other end connects the positive pole of power supply, and whole wafer is encapsulated by epoxy resin. Semiconductor wafer is made up of two parts, and a part is P-type semiconductor, and hole occupies an leading position in it, and the other end is N-type semiconductor, and here mainly is electron. But time these two kinds of semiconductors couple together, between them, just form a P-N junction. When electric current acts on this chip by wire time, electron will be pushed to P district, and in P district, electro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/02H05B44/00
CPCH05B33/0851H05B33/0827H05B33/0815H05B45/10H05B45/46H05B47/10H05B45/397Y02B20/30H05B45/48
Inventor 张虹辜小斌吴孝明陈来剑成伟龚汉牛
Owner SUZHOU HETEC ELECTRONICS TECH CO