Integrated IGBT driving method and device

Abstract

The invention relates to the technical field of IGBT driving, and discloses an integrated IGBT driving method and device. The device for the method comprises an upper core control board, a lower IGBT interface board and an IGBT module, wherein the upper core control board is connected with the lower IGBT interface board through single-row pins and sockets; the lower IGBT interface board and the IGBT module are directly connected into a whole through bonding pads; anti-vibration plastic studs for fixed connection are arranged between the upper core control board and the lower IGBT interface board; the lower IGBT interface board arranged in parallel between the upper core control board and the IGBT module is a shielding layer board for shielding the interference of a strong electromagnetic interference source to the upper core control board. According to the method and the device, a low-voltage weak signal is shielded from the strong electromagnetic interference source, anti-interference capability is enhanced, good driving effects are achieved, the device is compact in structure, low in cost, flexible in interface and convenient to assemble and disassemble, and the device and the method are applied to strong vibration places, and are high in anti-interference capability.

Description

technical field [0001] The invention relates to the field of IGBT drive technology, in particular to an integrated IGBT drive method and device, which is suitable for drive occasions of IGBT half-bridge modules packaged in EconoDual packages up to 1700V, such as rectifiers and inverters. Background technique [0002] In the application of higher power IGBTs of 1700V and below, the IGBT half-bridge module in the 17mm EconoDual package is not only easy to obtain the optimal design in terms of structural layout, but also more conducive to system compactness and product miniaturization. At present, the driving scheme applied to IGBT is mainly to design the driving circuit of the separation device or the thick film driving module using the photoelectric isolation technology, and the plug-and-play magnetic isolation integrated driver using the anti-interference treatment of the transformer developed by some manufacturers. The drive circuit designed with discrete devices is general...

AI Technical Summary

Problems solved by technology

The drive circuit designed with discrete devices is generally installed directly on a single circuit board above the IGBT half-bridge module with extremely strong electromagnetic interference, because the core drive control circuit in the drive device that is susceptible to interference is difficult to withstand large currents, such as short-circuit conditions Under high-intensity electromagnetic interference, problems such as false alarms and malfunctions of the driving device often occur, which affect the reliability and stability of the entire system

However, the use of plug-and-play drivers not only has the problem of high cost, but also limits the flexibility and interface of the driver circuit design.

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