High-voltage gate driving circuit module with resistance to interference of common mode power noises

Abstract

The invention provides a high-voltage gate driving circuit module with resistance to the interference of common mode power noises. The module mainly comprises an anti-common mode power noise interference circuit, a high-voltage level shifting circuit, a pulse filtering circuit, an RS trigger and an output driving circuit, wherein the anti-common mode power noise interference circuit can decrease a common mode noise pulse width generated by the fluctuations of power signals at the output end of the level shifting circuit; the high-voltage level shifting circuit is mainly used for converting low-voltage input pulse signals into high-voltage pulse signals; and the pulse filtering circuit is used for filtering interference pulse signals below a certain width from the pulse signals output by the level shifting circuit and only keeping pulse signals which work normally. The anti-common mode power noise interference circuit consists of simple resistors, capacitors, Zener diodes and field effect transistors, so fewer circuit elements are used for effectively avoiding common mode power noise signals generated by the fluctuations of the power signals causing false triggering to power tubes by a high-voltage gate driving circuit.

Description

technical field [0001] The present invention relates to the technical field of high-voltage gate drive capable of resisting common-mode power supply noise interference, and in particular to an anti-common-mode power supply noise interference used in half-bridge drive chips in the field of ballasts and motor drives to prevent drive tubes from being misoperated High voltage drive circuit design. Background technique [0002] Intelligent Power Modular integrates multiple circuit components such as high-voltage integrated circuit chips, low-voltage control integrated circuit chips, and discrete power devices into one module, which has advantages that the electronic control system composed of traditional discrete electronic components does not have. With many advantages, it has gradually replaced the traditional electronic control system built by discrete electronic components in recent years, and has become the core component in the current applications of industrial motors, air...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem of anti-common-mode power supply noise interference of the high-voltage gate drive circuit, the present invention provides a high-voltage gate drive circuit module that can effectively avoid generating false trigger signals and has a simple circuit structure that can resist common-mode power supply noise interference. While ensuring the anti-noise ability of the overall circuit, it does not affect the normal working condition of the circuit

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