Voltage-rising type LED driving circuit and lamp

A technology of LED driver and LED lamp group, applied in the direction of electric lamp circuit layout, electric light source, light source, etc., can solve the problems of inflexible application, high cost, complicated circuit, etc., and achieve the effect of overcoming constant current integration

Inactive Publication Date: 2012-12-05
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a boost-type LED drive circuit, which aims to solve the problems of complex circuits, high cost, and infle

Method used

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  • Voltage-rising type LED driving circuit and lamp
  • Voltage-rising type LED driving circuit and lamp

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Embodiment Construction

[0013] 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.

[0014] figure 1 The structure of the step-up LED driving circuit provided by the first embodiment of the present invention is shown. For the convenience of description, only the parts related to the embodiment of the present invention are shown, and the details are as follows.

[0015] The step-up LED drive circuit is connected to the LED light group, and the step-up LED drive circuit includes:

[0016] Current limiting resistor R1, current limiting resistor R2, pull-up resistor R3, current limiting resistor R4, sampling resistor R5, filter capacitor C1, energy storage capacitor C2, filter capacit...

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Abstract

The invention is suitable for the field of LEDs, and particularly relates to a voltage-rising type LED driving circuit and a lamp. In the embodiment of the invention, the voltage-rising type LED driving circuit comprises independent elements; single-chips are used for realizing the voltage-rising function through PWM pulse control, and detecting and controlling the current of an LED lamp. The maximum output current can be adjusted by modifying the control program of the single-chips, and the luminance of the LED lamp set can also be adjusted through a light adjusting switch. The voltage-rising type LED driving circuit and the lamp have the advantages of high effect, reliability, low price, simplicity, portability and the like, so as to overcome the defects of constant-current integration.

Description

technical field [0001] The invention belongs to the field of LEDs, in particular to a boost-type LED driving circuit and a lamp. Background technique [0002] With the continuous development of science and technology, new products and new technologies are constantly innovating. As a new type of light source, LED has the characteristics of energy saving, environmental protection and high efficiency. A variety of LED drive circuits have been developed, but as a constant current device, the LED is very sensitive to the voltage level. When the input voltage is lower than the rated voltage of the LED lamp group, the LED lamp group cannot work in a constant current state, so It is necessary to increase the voltage to the rated voltage of the LED lamp group, and then drive it with a constant current. At present, the step-up constant current integrated chip is generally used to realize it. Although it has the advantages of low power consumption, stability and reliability, and light...

Claims

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Application Information

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IPC IPC(8): H05B37/02
Inventor 周明杰孙占民
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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