Alternating-current signal amplification type gate drive system based on half-bridge controlled drive circuit

A driving circuit and AC signal technology, applied in the direction of instruments, static indicators, etc., can solve the problems of large current noise, high energy consumption, and long start-up time, and achieve the effects of reduced energy consumption, reduced current noise, and short start-up time

Inactive Publication Date: 2015-10-14
CHENGDU JIESHENG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects of high energy consumption, high current noise and long start-up time in current gate drive circuits, and provide an AC signal amplified gate drive system based on a half-bridge control drive circuit

Method used

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  • Alternating-current signal amplification type gate drive system based on half-bridge controlled drive circuit
  • Alternating-current signal amplification type gate drive system based on half-bridge controlled drive circuit

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Embodiment

[0020] Such as figure 1 As shown, the present invention consists of a drive chip M, a self-locking light excitation circuit, a drive circuit connected to the drive chip M, an in-phase AC signal amplifying circuit connected to the self-locking excitation circuit, and an in-phase AC signal amplifying circuit connected in series with the The half-bridge control driving circuit between the driving chips M is composed.

[0021] The in-phase AC signal amplifying circuit is used to amplify the pulse signal generated by the self-locking excitation circuit to avoid signal attenuation. It consists of a power amplifier P, a resistor R4, a resistor R5 and a polar capacitor C5. When connecting, one end of the resistor R4 is connected to the half-bridge control drive circuit, and the other end is connected to the positive input end of the power amplifier P; one end of the resistor R5 is connected to the negative input end of the power amplifier P, and the other end is connected to the nega...

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PUM

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Abstract

The invention discloses an in-phase alternating current signal amplification type optical excitation grid drive circuit mainly composed of a drive chip M, a self-locking optical excitation circuit and a drive circuit, and the drive circuit is connected with the drive chip M. The in-phase alternating current signal amplification type optical excitation grid drive circuit is characterized in that an in-phase alternating current signal amplification circuit is connected between the drive chip M and the self-locking optical excitation circuit in series; the in-phase alternating current signal amplification circuit is composed of a power amplifier P, a resistor R4, a resistor R5 and the like, one end of the resistor R4 is connected with a VCC pin of the drive chip M, the other end of the resistor R4 is connected with the positive electrode input end of the power amplifier P, one end of the resistor R5 is connected with the negative electrode input end of the power amplifier P, and the other end of the resistor R5 is connected with the self-locking optical excitation circuit. The related functions of the drive chip M are automatically excited according to external light conditions, additional starting devices do not need to be added, and therefore the power consumption of the drive circuit is reduced.

Description

technical field [0001] The invention relates to an LED drive circuit, in particular to an AC signal amplified grid drive system based on a half-bridge control drive 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, high current noise and long start-up time in current gate drive circuits, and provide an AC signal ampli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/32
Inventor 雷明方
Owner CHENGDU JIESHENG TECH CO LTD
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