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Overvoltage protective LED energy-saving driving system based on power amplification circuit

A technology of a power amplifier circuit and a drive system, applied in the field of drive systems, can solve the problems of inability to meet energy-saving requirements and high power consumption, and achieve the effects of reducing startup power consumption, small startup current, and avoiding damage

Inactive Publication Date: 2016-10-12
CHENGDU SINOMETALLURGY ENERGY CONSERVATION ENVIRONMENTAL PROTECTION ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional LED drive system consumes a lot of power at startup, which cannot meet people's energy-saving needs

Method used

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  • Overvoltage protective LED energy-saving driving system based on power amplification circuit
  • Overvoltage protective LED energy-saving driving system based on power amplification circuit
  • Overvoltage protective LED energy-saving driving system based on power amplification circuit

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Effect test

Embodiment

[0020] Such as figure 1 As shown, the present invention is mainly composed of the control chip U2, the transformer T, the power supply circuit and the frequency adjustment circuit connected to the control chip U2 respectively, the P pole is connected with the frequency adjustment circuit, and the N pole is connected with the VS pin of the control chip U2 Diode D4, the anode is connected to the SGND pin of the control chip U2, and the negative pole is connected to the frequency adjustment circuit. Capacitor C3, one end is connected to the PGND pin of the control chip U2, and the other end is connected to the frequency adjustment circuit while grounding Resistor R3, the gate drive circuit connected to the VS pin of the control chip U2, the overvoltage protection circuit connected in series between the power supply circuit and the frequency adjustment circuit, and connected in series between the gate drive circuit and the secondary side of the transformer T The power amplifier ci...

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PUM

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Abstract

The invention discloses an overvoltage protective LED energy-saving driving system based on a power amplification circuit. The overvoltage protective LED energy-saving driving system is characterized by manly consisting of a transformer T, a control chip U2, a power supply circuit and a frequency adjustment circuit which are connected with the control chip U2, a diode D4 which has a P pole connected with the frequency adjustment circuit and an N pole connected with a VS pin of the control chip U2, and the like. The system, by use of a GR6953 integrated chip as the control chip and through combination with a peripheral circuit, forms a half-bridge control structure, such that starting power consumption is reduced, and the system is more energy-saving. Large power can be output, and demands of multiple LEDs for simultaneous work are satisfied. At the same time, the circuit can be automatically disconnected in case of overvoltages, the system itself and the LEDs are prevented from damage caused by the overvoltages.

Description

technical field [0001] The invention relates to a drive system, in particular to an overvoltage protection type LED energy-saving drive system based on a power amplifier circuit. Background technique [0002] At present, due to the characteristics of low energy consumption, long service life, safety and environmental protection, LED lamps have become one of the mainstream products for people's living lighting. With the continuous improvement of people's awareness of energy saving, people's energy consumption requirements for LED drive systems are also getting higher and higher, which brings new challenges to LED drive systems. However, the traditional LED drive system consumes a lot of power when it is started, which cannot meet people's energy-saving needs. Contents of the invention [0003] The purpose of the present invention is to solve the defect of large power consumption during start-up of the current LED driving system, and provide an overvoltage protection type L...

Claims

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Application Information

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IPC IPC(8): H05B33/08H05B44/00H05B45/30
CPCH05B45/00Y02B20/30
Inventor 不公告发明人
Owner CHENGDU SINOMETALLURGY ENERGY CONSERVATION ENVIRONMENTAL PROTECTION ENG CO LTD
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