Intelligent power module

Abstract

The invention belongs to the field of power drive control, and provides an intelligent power module. An input circuit, a U-phase upper bridge arm output circuit, a V-phase upper bridge arm output circuit, a W-phase upper bridge arm output circuit, a U-phase lower bridge arm output circuit, a V-phase lower bridge arm output circuit and a W-phase lower bridge arm output circuit are adopted in the intelligent power module so that each IGBT tube is driven by an independent circuit, a jumper wire between the circuit and the gate electrode of the IGBT tube is effectively reduced, gate electrode inductance is reduced, circuit noise is reduced, and thus switching speed of the IGBT tubes is enhanced. Besides, switching time of the IGBT tubes of upper and lower bridge arms are maintained to be consistent without conduction at the same time so that safety of the intelligent power module is enhanced. Furthermore, the U-phase lower bridge arm output circuit, the V-phase lower bridge arm output circuit and the W-phase lower bridge arm output circuit are low-voltage area circuits so that technical manufacturing cost is relatively low, and thus manufacturing cost of the overall intelligent power module can be substantially reduced.

Description

technical field [0001] The invention belongs to the field of power drive control, in particular to an intelligent power module. Background technique [0002] Intelligent Power Module (IPM, Intelligent Power Module) is a power drive product that combines power electronics technology and integrated circuit technology. The intelligent power module integrates the power switching device and the high-voltage driving circuit, and has built-in fault detection circuits such as overvoltage, overcurrent and overheating. On the one hand, the intelligent power module receives the control signal from the MCU and drives the subsequent circuit to work; on the other hand, it feeds back the system status detection signal to the MCU. Compared with traditional discrete solutions, intelligent power modules have won an increasing market due to their advantages of high integration and high reliability. They are especially suitable for inverters and various inverter power supplies for driving moto...

AI Technical Summary

Problems solved by technology

[0014] The purpose of the present invention is to provide an intelligent power module, aiming at solving the low switching efficiency and circuit noise of the IGBT tube due to the excessively long jumper wire between the HVIC chip and the gate of the IGBT tube in the existing intelligent power module Large, and when the IGBT tubes of the upper and lower bridge arms are turned on at the same time, the intelligent power module will be burned due to overcurrent, and at the same time reduce the manufacturing cost of the intelligent power module

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