General high-efficiency long-life driving circuit for wide voltage non-inductance semiconductor illumination

Abstract

The invention relates to a semiconductor illuminating lamp, in particular to a general high-efficiency long-life driving circuit for wide voltage non-inductance semiconductor illumination. According to the driving circuit disclosed by the invention, the traditional switching power supply and complex circuit topology of a PWM (Pulse Width Modulation) control mode are thoroughly changed, an output capacitor is charged and a load is powered by adopting directly-rectified commercial power, and the charging state of the output capacitor is controlled by utilizing the on-off of a field effect transistor; the on-off of the field effect transistor is controlled by a current flowing through the load so that the stability of an output current is ensured; a current of an LED (Light Emitting Diode) can be effectively controlled in an appropriate range so that the LED is prevented from being burned-out due to lightning effects of power transmission lines and affects of surge currents in switching on / off; and the driving circuit can be manufactured into a standard module, is suitable for large-scale industrialized production and has the advantages that the circuit design is ingenious, the whole circuit is very concise, the cost is low, no large-capacity capacitor is needed, the current stability is high, and the whole life is greatly prolonged, which can be close to the theoretical life about one hundred thousand hours of a semiconductor.

Description

technical field [0001] The invention relates to a semiconductor lighting lamp, in particular to a universal high-efficiency and long-life drive circuit for wide-voltage non-inductive semiconductor lighting. Background technique [0002] At present, the known LED lighting driving circuit is heavy, bulky, complex, poor in versatility, low in efficiency, and high in cost, which is not conducive to large-scale industrial production of LED lighting; The range of voltage adaptation is not wide enough, and capacitors with larger capacity must be used, which have strong additional pulse electromagnetic interference. Contents of the invention [0003] In order to overcome the disadvantages of the existing switching voltage stabilizing circuit, such as complex structure, high cost, large volume, heavy weight, high requirements for production conditions, poor versatility, narrow applicable input and output voltage range, strong pulse interference, etc., the present invention provides...

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Problems solved by technology

[0003] In order to overcome the disadvantages of the existing switching voltage stabilizing circuit, such as complex structure, high cost, large volume, heavy weight, high requirements for production conditions, poor versatility, narrow applicable input and output voltage range, strong pulse interference, etc., the present invention provides a Fully discrete components, low cost, high efficiency, small size, extremely simple, low difficulty in production and debugging, semiconductor lighting constant current drive circuit solutions that can be used in various semiconductor lamp drive power supplies and other purposes

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