Ripple inhibition type 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 improving stability
Inactive Publication Date: 2016-10-12
CHENGDU SINOMETALLURGY ENERGY CONSERVATION ENVIRONMENTAL PROTECTION ENG CO LTD
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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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[0020] like 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 The resistor R3 is connected in series between the VS pin of the control chip U2 and the non-identical terminal of the secondary inductance coil of the transformer T. The ripple suppression circuit between them, the overvoltage protection circuit connected in series between the power supply circuit and the frequency regulation circu...
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The invention discloses a ripple inhibition type 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. At the same time, AC components residual in DC voltages can be inhibited, and the stability of the system is greatly improved.
Description
technical field [0001] The invention relates to a drive system, in particular to a ripple suppression LED energy-saving drive system based on an overvoltage protection 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 drive system, and provide a ripple-suppressed LED energy-savin...
Claims
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IPC IPC(8): H05B33/08H02H3/20H02M1/14H05B44/00H05B45/30H05B47/165
CPCH02H3/202H02M1/14H05B45/50H05B45/37Y02B20/30
Inventor 不公告发明人
Owner CHENGDU SINOMETALLURGY ENERGY CONSERVATION ENVIRONMENTAL PROTECTION ENG CO LTD