LED energy-saving driving system based on overvoltage protection circuit

An overvoltage protection circuit and drive system technology, applied in emergency protection circuit devices, overvoltage-responsive protection, circuit devices, etc., can solve problems such as inability to meet energy-saving requirements and high power consumption, and achieve reduced startup power consumption , The starting current is small, and the effect of 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

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Problems solved by technology

However, the traditional LED drive system consumes a lot of po

Method used

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  • LED energy-saving driving system based on overvoltage protection circuit
  • LED energy-saving driving system based on overvoltage protection circuit

Examples

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Example Embodiment

[0016] Example

[0017] Such as figure 1 As shown, the present invention mainly consists of a control chip U2, a transformer T, a power supply circuit and a frequency adjustment circuit respectively connected to the control chip U2, the P pole is connected to the frequency adjustment circuit, and the N pole is connected to the VS pin of the control chip U2 The diode D4, the anode is connected to the SGND pin of the control chip U2, the cathode is connected to the capacitor C3 of the frequency adjustment circuit, 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 being grounded The resistor R3 is connected in series to the gate drive circuit between the VS pin of the control chip U2 and the non-identical end of the secondary inductor coil of the transformer T, and the overvoltage protection circuit is connected in series between the power supply circuit and the frequency adjustment circuit , And a c...

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Abstract

The invention discloses an LED energy-saving driving system based on an overvoltage protection circuit. The 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. At the same time, the circuit can be automatically disconnected in case of overvoltages, the system itself and LEDs are prevented from damage caused by the overvoltages.

Description

Technical field [0001] The invention relates to a driving system, in particular to an LED energy-saving driving system based on an overvoltage protection circuit. Background technique [0002] At present, due to the low energy consumption, long service life, safety and environmental protection, LED lights have become one of the mainstream products for people's life lighting. With the continuous improvement of people's awareness of energy conservation, people have higher and higher energy requirements for LED drive systems, which brings new challenges to LED drive systems. However, the traditional LED driving system consumes a lot of power at startup, which cannot meet people's energy-saving needs. Summary of the invention [0003] The purpose of the present invention is to solve the defect that the current LED driving system has relatively large power consumption during startup, and to provide an LED energy-saving driving system based on an overvoltage protection circuit. [0004]...

Claims

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Application Information

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IPC IPC(8): H05B33/08H02H3/20H05B44/00H05B45/30
CPCH02H3/202H05B45/50H05B45/37Y02B20/30
Inventor 不公告发明人
Owner CHENGDU SINOMETALLURGY ENERGY CONSERVATION ENVIRONMENTAL PROTECTION ENG CO LTD
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