Driving circuit, intelligent power module and electronic equipment

Abstract

The invention belongs to the technical field of electronic circuits, and particularly relates to a driving circuit, an intelligent power module and electronic device.The driving circuit comprises a first driving unit, a second driving unit, a first bridge arm switch unit, a second bridge arm switch unit and a protection unit, and in the running process of the driving circuit, when the driving circuit works under the condition of large current, the first bridge arm switch unit and the second bridge arm switch unit are protected; when the second bridge arm switch unit is switched off, voltage spike or oscillation caused by bridge arm parasitic inductance can damage the driving circuit, energy on the parasitic inductance can be discharged in time by arranging the protection unit, the driving circuit is protected from being damaged, the reliability and safety of the driving circuit are improved, and the driving circuit is protected from being damaged. The risk of failure of the intelligent power module under the limiting current is reduced, and the reliability of the intelligent power module is improved.

Description

technical field [0001] The present application belongs to the technical field of electronic circuits, and particularly relates to driving circuits, intelligent power modules and electronic equipment. Background technique [0002] Intelligent Power Module (IPM) is an advanced power switch device, which integrates logic, control, detection and protection circuits, which is easy to use, not only reduces the size and development time of the system, but also greatly enhances the In order to improve the reliability of the system and adapt to the development direction of power device modularization, compounding and power integration, it has been widely used in power electronic devices represented by frequency converters and various power sources. [0003] The switching devices inside the intelligent power module are usually insulated gate bipolar transistors (Insulated Gate Bipolar Transistor, IGBT). shutdown performance. When the IGBT is switched, the voltage spikes and oscillat...

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Problems solved by technology

[0004] In view of this, the embodiment of the present application provides a drive circuit, an intelligent power module, and electronic equipment, aiming to solve the problem that the relative negative pressure generated by the parasitic inductance of the inverter bridge arm of the traditional intelligent power module will impact the internal devices, resulting in reliable sex problem

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