Combined protective optical excitation gate driving system based on logic protection amplifying circuit

Abstract

The invention discloses a same-phase alternating-current signal amplification type optical excitation gate drive system based on a logic protection amplification circuit. The same-phase alternating-current signal amplification type optical excitation gate drive system comprises a driver chip M, a self-locking optical excitation circuit, a drive circuit connected with the driver chip M and a same-phase alternating-current signal amplification circuit which is in series connection between the driver chip M and the self-locking excitation circuit. The same-phase alternating-current signal amplification circuit is composed of a power amplifier P1, a resistor R4 and the like. One end of the resistor R4 is connected with a VCC (virtual channel connection) pin of the driver chip M, and the other end of the resistor R4 is connected with an anode input end of the power amplifier P1. The same-phase alternating-current signal amplification type optical excitation gate drive system is characterized in that the logic protection amplification circuit is in series connection between the power amplifier P1 and an INP (intelligent network processor) pin of the driver chip M. The same-phase alternating-current signal amplification type optical excitation gate drive system has the advantages that according to external light condition, related functions of the driver chip M are automatically excited, the additional starter is omitted, and accordingly power consumption is low.

Description

technical field [0001] The invention relates to an LED drive circuit, in particular to a composite protection light excitation grid drive system based on a logic protection 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. Since the LED lamp is different from the traditional incandescent lamp, it needs to be driven by a dedicated driving circuit. However, due to the unreasonable design structure of the currently widely used gate drive circuit, the current gate drive circuit has defects such as high energy consumption, large current noise, and long start-up time. Contents of the invention [0003] The purpose of the present invention is to overcome the defects of high energy consumption, large current noise and long start-up time in the current gate drive circuit, and prov...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects of high energy consumption, large current noise and long start-up time in the current gate drive circuit, and provide a reasonable structure design, which can effectively reduce power consumption and current noise, and significantly shorten the start-up time A composite protected photo-excited gate drive system based on a logic protected amplifier circuit

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